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SACO 16A3Analogue input annunciator

User´s manual and Technical description

2

1MRS 751015-MUM EN

Issued 1998-05-08Modified 2001-03-06Version B (replaces 34 SACO 16A3 EN1)Checked PSApproved EP

Data subject to change without notice

SACO 16A3Analogue input

annunciator

Contents Features ................................................................................................................................. 4Introduction .......................................................................................................................... 4Areas of application ............................................................................................................... 4General system information ................................................................................................... 4Block diagram ....................................................................................................................... 5Mechanical construction ....................................................................................................... 5Annunciator channel functions .............................................................................................. 6

Transducer functions ....................................................................................................... 6Channel principle diagram ............................................................................................... 7Selection of transducer type ............................................................................................. 8Filtering ........................................................................................................................... 8Scaling .............................................................................................................................. 9Measured quantity ......................................................................................................... 10Transducer supervision .................................................................................................. 10Input oscillation ............................................................................................................. 10Earth-fault ...................................................................................................................... 11Set-points ....................................................................................................................... 11Alternative 1. Two HI and two LO set-point ................................................................. 11Channel starting delay .................................................................................................... 12Channel resetting delay .................................................................................................. 12Deadband....................................................................................................................... 12Alternative 2. One HI and one LO set-point and one rise time andone fall time set-point .................................................................................................... 13Grouping of reflash outputs ........................................................................................... 14Interlockings .................................................................................................................. 15Registration of alteration of measured values ................................................................. 16Calibration ..................................................................................................................... 16Channel text .................................................................................................................. 16Reading of measured value ............................................................................................. 16

Sequence patterns for the alarm and tripping functions ...................................................... 16Annunciator channel sequences ..................................................................................... 16Trip sequences ............................................................................................................... 18First-out alarm and first-out trip ................................................................................... 18Local/remote control ...................................................................................................... 18

Real time clock .................................................................................................................... 18Clock synchronization ................................................................................................... 18Time setting ................................................................................................................... 18

Contact outputs .................................................................................................................. 19Groupable output relays ................................................................................................ 19Setting of realarm output relay function mode .............................................................. 19Pulse length .................................................................................................................... 20Audible alarm output relay ............................................................................................ 20Self-supervision system output relay .............................................................................. 20

Average value measurement ................................................................................................. 21Average value set-points ................................................................................................. 21Grouping of average value set-points .............................................................................. 22Delay of average value set-point alarm ........................................................................... 22External reference value .................................................................................................. 22Connection of channels to the average value calculation ................................................ 22Setting of channel-specific deviation set-points .............................................................. 23Grouping of channel-specific set-points ......................................................................... 23Setting of response and reset times ................................................................................. 23

3

Serial communication .......................................................................................................... 24Bus connection modules ................................................................................................ 24Communication protocol ............................................................................................... 24Transferred data ............................................................................................................. 25Event register for the SPACOM reporting system .......................................................... 25Address code .................................................................................................................. 26Data transfer rate ........................................................................................................... 26

Auxiliary power supply ........................................................................................................ 26Supply voltage range ...................................................................................................... 26Double supply ................................................................................................................ 27

Self-supervision.................................................................................................................... 28Mounting ............................................................................................................................ 29

Dimensional drawings .................................................................................................... 29Connection .......................................................................................................................... 30

Connection diagram ...................................................................................................... 31Power supply .................................................................................................................. 32Relay outputs ................................................................................................................. 32Remote control inputs ................................................................................................... 32Transducer inputs .......................................................................................................... 32Transducer connections ................................................................................................. 33Current transducers ........................................................................................................ 33Voltage transducers ........................................................................................................ 33Resistance transducers .................................................................................................... 34Field contact signals ....................................................................................................... 35Serial bus connection ..................................................................................................... 35Interlocking bus connection ........................................................................................... 35Annunciator start-up ...................................................................................................... 35

Edition and change of channel legend foil ........................................................................... 36Programming....................................................................................................................... 37

Setting through the display and the push-buttons .......................................................... 37Basic display ................................................................................................................... 38Channel selection display ............................................................................................... 38Basic menu display ......................................................................................................... 38Submenu display ............................................................................................................ 38Setting display ................................................................................................................ 39Programming via the serial bus ...................................................................................... 39

Operation ............................................................................................................................ 39Resetting of set-point transition ..................................................................................... 40Indication of first-out alarms and transducer faults ........................................................ 40Function testing ............................................................................................................. 40

Display of measured values and event register contents ....................................................... 41Measured values ............................................................................................................. 41Limit values and measured quantities ............................................................................. 41Selection of display mode ............................................................................................... 41Bar graph display mode .................................................................................................. 42Curve display mode ........................................................................................................ 42Stored measurement value curve .................................................................................... 43Local event sequence register .......................................................................................... 43Display of average value ................................................................................................. 44

List of parameters ................................................................................................................ 45Module-related information .......................................................................................... 45Channel-specific information ......................................................................................... 48

Event codes .......................................................................................................................... 52Technical data ..................................................................................................................... 53Testing ................................................................................................................................ 56Maintenance and repair ....................................................................................................... 56Accessories and spare parts ................................................................................................... 57

4

Features Stand-alone, off-the-shelf annunciator unit foranalogue input signals or field contact signals.

Four digit alpha-numerical display and a 64x120LCD dot matrix display for local data presenta-tion.

Serial port for connection of the annunciatorunit to the fibre-optic SPA bus and further tothe hierarchically higher level data acquisitionand reporting system or remote control system.

36 standardized, fully field-selectable channelinput signal ranges.

Four adjustable alarm or trip set-points perchannel.

Event register for local presentation of the last30 events.

Easy selection of parameters and straight for-ward configuration of the whole annunciatorunit.

Sophisticated built-in self-supervision systemfor enhanced operational reliability.

Introduction The analogue annunciator unit type SACO 16A3is a member of the substation secondary equip-ment system named SPACOM. The SPACOMsystem further includes protective relays and as-semblies, remote control modules, on/off annun-ciator units and control data communicators fordata acquisition and event reporting. All theSPACOM devices can be used as self-containedstand alone equipment. At the same time thevarious devices can be interconnected by means

of a serial communication to form protection,supervision, data acquisition, reporting and con-trol systems as required by the application.

The various devices of the SPACOM systemcan further be connected to a hierarchicallyhigher level host system, e.g. a remote controlsystem or an automation system, by means ofthe serial communication especially developedfor that purpose.

Areas ofapplication

The units and modules of the SPACOM systemhave been developed and type tested for useunder the most severe environmental condi-tions, where a maximum of functional reliabil-ity and immunity to interference is required.Further special attention has been paid to suchsystem features as flexibility and the adaptabilityof the system to various tasks.

Typical areas of application with the abovementioned characteristics are:– electric power stations and distribution sub-

stations– industrial plants and process installations– marine installations and applications

SACO 16A3 is a versatile 16-channel analogueannunciator unit with two adjustable high set-points and two adjustable low set-points perchannel.

Simply by programming the annunciator chan-nels can be adapted to various transducer signaltypes such as current, voltage or resistance. Fieldcontact signals are also accepted as channelinput signals.

The annunciator unit incorporates eight outputauxiliary relays. Six output relays are reservedfor group alarm purposes, one output relay isintended for the control of an external audibledevice and one output relay is controlled by theunits internal self-supervision system.

A hierarchically superior data acquisition sys-tem may obtain information, e.g. measuredvalues, event register messages, set-points orother set parameters via the serial interface of theannunciator unit. Further, the settings may bealtered via the serial interface. In cooperationwith a master unit the analogue annunciator

may constitute part of a data acquisition andevent reporting system.

The versatile display features enable the annun-ciator unit to be used as a local measuringinstrument. The measured values are presentedin numerical form in the digital display or in theform of a curve or a bar graph in the matrixdisplay. The measured value curve may be givenfive different time scales. The content of theevent register may also be displayed.

The selection of transducer type, scaling, group-ing, set-point values and other parameters arecarried out by means of the push-buttons andthe display on the front panel or via the data busand the serial interface.

When the measured parameter exceeds or goesbelow the set-point value an indicator startsflashing on the front panel. At the same time theaudible alarm output relay picks up and one ormore realarm relays are programmed to respond.The event is further stored in the event registertogether with an attached real time stamp.

General systeminformation

5

Block diagram

Block diagram of the annunciator unit SACO 16A3.

Mechanicalconstruction

The annunciator unit is a modular device basedon standardized plug-in Euroboards, 100 mm x160 mm. The annunciator unit SACO 16A3comprises the following modules:

– auxiliary supply module, type SPGU 240A1or SPGU 48B2

– analogue signal input module, type SWAM16A1

– microprocessor module, type SWPM 4A1– display module, type SWDM 4A1– input/output module, type SWOM 8A1 and

8A2

Further the annunciator unit comprises a con-nection module, type SWCM 10A1, whichcarries the PCB connectors on one side and thescrew terminal strips to facilitate the externalconnections on the other side.

The screw terminals for the transducer inputsignals and for the remote resetting input signalsare mounted on a detachable socket, which canbe used as a separate connection base, e.g. whenthe annunciator unit is mounted in a pulpit ordesk.

The case is made of profile aluminium andfinished in beige. The mounting frame is of analuminium alloy and has been stove finishedwith a semi-gloss, beige carbamide resin paint.The mounting frame is provided with a rubbergasket which tightens the joint between the caseand the mounting panel to IP 54.

The cover of the case is moulded of a transpar-ent, UV-stabilized polycarbonate. The cover isalso provided with a gasket in order to ensureIP54 tightness between the cover and the mount-ing frame. The cover is locked with two fingerscrews which can be sealed.

The connection module holds a screw terminalstrip for the auxiliary supply, the contact out-puts and for the connection module for theSPA-bus. One screw terminal may accommo-date one or two max. Ø 2.5 mm2 conductors.No terminal lugs are needed.

The transducer signal inputs are provided withdetachable terminal strips which allow the trans-ducer wiring to be disconnected without open-ing any screw terminals. Each terminal acceptsone multistrand conductor of max. Ø 1.5 mm2.

A connection diagram has been attached to oneof the side walls of the annunciator case.

24 V48 V

CPUInternal supply, logics

Internalsupply,analogue

48 V

Audible alarm

Internal supervision

Man-machine interfaceSPA-busconnection

Auxiliarysupply

1:st 2:nd

Transducersupply andcable shieldconnection

16 transducer connections

Remote ackn.,reset, test,local/remotecontrol and synch-ronizing inputs

Group alarm 1...6, audiblealarm and internal super-vision outputs

6

Annunciatorchannel functions

Transducer functions

The annunciator channel inputs accept current,voltage, resistance or contact-type transducersignals. The annunciator channel inputs are setto correspond with the various transducer typesthey are intended to be connected to simply byprogramming and by connecting the input sig-nals to the appropriate terminals.

The channel input circuits are galvanically sepa-rated from the equipment earth and from thedigital part of the electronics. However, thechannels are galvanically interconnected. Thearrangement described above enables earth-faultsin the transducers and the field wiring to beeasily supervised and detected.

Cable faults are supervised by means of thetransducer signal which must not differ fromthe programmed measuring range in order to beaccepted. Consequently cable discontinuity can-not be detected in transducer circuits rangingfrom zero. Cable faults are indicated on thedigital display and simultaneously the trippingreflash functions are blocked.

The channel input signal range for currentsignals may be defined by programming from aseries of standardized ranges, i.e. 0…5 mA,1…5 mA, 0…20 mA and 4…20 mA. Thebuilt-in 270 ohm shunt resistor is connectedacross the channel input by means of a jumper.Alternatively an external shunt resistor may beused, in which case the input is preferablyprogrammed for the input signal range 0…1 V.The auxiliary supply voltage for the signal trans-ducers may be fed by the annunciator unit. Thevoltage level is 24 V dc and the total currentdrain must not exceed 320 mA.

The programmable channel input voltage signalranges are 0…1 V, 0…5 V, 1…5 V, 0…10 V

and 2…10 V and the transducer supply voltagemay even in this case be taken from the annun-ciator unit itself.

When resistance input signals are to be used theinput may be programmed for various transduc-ers within the range (0…130 Ω)…(0…10 kΩ).In addition to the potentiometric transducersthe following sensor types may be used: Pt 100,Pt 250, Pt 1000, Ni 100, Ni 120, Ni 250 andNi 1000. Further, a selectable resistance inputfor Pt or Ni sensors may be calibrated withpotentiometers inside the unit.

The sensors may be connected to the channelinput according to the three-wire principle orthe two-wire principle. If the three-wire princi-ple is used the conductor resistance is compen-sated for, provided that both conductors havethe same resistance.

When the two-wire connection is used theconductor resistance can be compensated for bycalculating the corresponding temperaturechange according to the Pt or Ni tables. Thisvalue can then be used for the compensation inthe scaling tables on a per channel basis.

Normally open or normally closed field contactsmay also be connected to the channel inputs.The +48 V dc field contact voltage is supplied bythe annunciator unit. The unit measures theloop current in the field contact circuits over abuilt-in shunt resistor, which should be jumperconnected to the channel input. Only one fieldcontact should be connected to a + 48 V termi-nal because the voltage over the concerned inputdrops to a few volts, if a second connectedcontact happens to be closed. The loop currentfor a closed field contact circuit is approx. 4 mA.

Transducer supply

48 V DC

24 V DC

+

-

DIFF

G

mA

Shieth earth

Field contactcircuit supply

Shunt resitor 270 Ω

+ Analogue terminal

- Analogue terminal

Analogue GND

Current generator

Input amplifier

Analogueswitches

Principle diagram of a channel input.

7

Channel principlediagram

The various annunciator channel functions areillustrated in the following block diagram. Theparameter settings are entered by means of the

push-buttons and the display on the front panelor via the serial interface.

Various transducer types may be connected tothe channel inputs without limitations follow-ing the instructions in the previous chapter.

The transducer circuits are galvanically separatedfrom the equipment earth and from the electron-ics. However, between themselves the transducer

circuits are interconnected. This implies that thetransducer circuits are floating and that they mustnot be earthed. The method of galvanic separa-tion has been used in order to strengthen theimmunity to interference of the channel inputand to provide a means for employing earth-faultprotection of the transducer circuits.

Channel-function block diagram.

LO alarm set-pointalternatively

negativ deviationset-points

Measurement transducer

&

&

&

&

1

HI trip set-pointalternatively

Rise time set-point

Channelstarting delay

Channelresetting delay

Dead-bandspecification

Filtering

Selection oftransducer type

Earth-faultsupervision

Upper and lowerset-point of

the transducersupervision

&

&

&

&

B

A

B

A

B

A

B

A

A and B are channelreflash signals whichmay be grouped andlinked to the realarmoutput relays

Blockingsignal output

Channel blockingsignal input

Input for blocking of theset-point feflash signal A

Registration ofmeasurement value

change

Visual alarmindicator

Audible alarm

Audible alarmreset

Alarm reset

Alarmacknowledge

Scaling

Galvanicisolation

Presentation ofmeasurement valuesand set-point values




Channel reseting delay



HI alarm set-pointalternatively

positiv deviationset-points

LO trip set-pointalternatively

fall time set-point

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Selection oftransducer type

To the annunciator unit the channel type iscommunicated by means of a parameter on a perchannel basis. The programming is executedthrough the INP.SIGN.SPEC parameter in thedisplay or via the serial interface by using an S-parameter.

S 470 = field contact input1 = not specified2 = not specified3 = 0…5 mA4 = 1…5 mA5 = 0…20 mA6 = 4…20 mA7 = 0…1 V8 = 0…5 V9 = 1…5 V

10 = 0…10 V11 = 2…10 V12 = Pt 100, –20…230°C13 = Pt 100, –20…600°C14 = Pt 250, –20…230°C15 = Pt 250, –20…600°C

16 = Pt 1000, –20…230°C17 = Pt 1000, –20…600°C18 = Adjustable Pt sensor, –20…600°C19 = Ni 100, –13…130°C20 = Ni 100, –13…250°C21 = Ni 120, –45…250°C22 = Ni 250, –13…130°C23 = Ni 250, –13…250°C24 = Ni 1000, –13…130°C25 = Ni 1000, –13…250°C26 = Adjustable Ni sensor, –13…250°C27 = 0…200 Ω28 = 0…500 Ω29 = 0…2000 Ω30 = 0…1000 Ω31 = 0…2500 Ω32 = 0…10 kΩ33 = adjustable potentiometric input

(0…130 Ω)…34 = adjustable potentiometric input

(0…640 Ω)…35 = not specified

Filtering For signal filtering a so called median filter isused. This filter type shows no reaction tointerference spikes but levels out directly onpermanent measurement value changes. Threedegrees of filtering may be selected. The timeconstant given determines the step responsetime of the input signal.

The step response time is programmed using theFILTER parameter on the display or via theserial port be defining the value of the parameterS45.

S450 = 300 ms1 = 1 s2 = 5 s

For the purpose of providing a means for sup-pression of interference signals from ac net-works, the frequency of the network may bekeyed in. The frequency is a module-specificparameter and it may be entered with the push-buttons and the display using the MAIN FRE-QUENCY parameter. Via the serial part theS37 parameter is used.

S370 = 50 Hz1 = 60 Hz

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Scaling The annunciator channels are to be separatelyscaled. The scaling range is +/– 0.000…9999.The location of the decimal point is defined bythe maximum value entered. The measuringsignal may be given a linear or a non-linearscaling. A linear scaling is performed by giving ascale value for the minimum value of the meas-uring signal and a scale value for the maximum

value of the measuring signal. A non-linearscaling is performed by dividing the transducersignal range in ten different subranges each ofwhich may be separately scaled. Consequentlythe scaling is defined by a broken line. Thisfunction may be used for compensating for theinaccuracy of the transducer or for linearizing anon-linear transducer.

0

100

200

300

400

500

600

°C

01

10 20 30 40 50 60 70 80 90 100 % 5 mA

Temperature

Channel input

Example of a linear scaling. (Exhaust gas measurement)

0

10

20

30

40

50

60

m

01

10 20 30 40 50 60 70 80 90 100 % 5 mA

3Volume

Channel input

Example of a non-linear scaling. The figure illustrates the measurement of the volume of a liquidin a cylindrical tank in a horizontal position by measuring the surface level.

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The scaling parameters are keyed in using theSCALING parameter in the matrix display orvia the serial interface using S parameters. Thefollowing parameters may be used for scalingpurposes.

S 33 +/–0.000…9999 = maximum value(100%)

S 34 +/–0.000…9999 = minimum value (0%)S 35 +/–0.000…9999 = 10% of the maximum

valueS 36 +/–0.000…9999 = 20% of the maximum

valueS 37 +/–0.000…9999 = 30% of the maximum

value

S 38 +/–0.000…9999 = 40% of the maximumvalue






S 44 0 = linear scaling1 = non-linear scaling

Measured quantity The measured quantity entered on a per channelbasis may consist of max. 5 characters. It isentered with the MEASURED QTY parameterin the matrix display using the cursor controland character selection keys. The quantity isshown in the matrix display in combination

with the set- point values. The measured quan-tity may also be entered via the serial interfaceusing the S 49 parameter.

S 49 XXXXX = five characters

Transducersupervision

The measuring signal level of each transducer isconstantly supervised. If the measured signalfalls more than 4% below or goes more than 4%over the specified input signal range of a par-ticular channel, the transducer or the transducerwiring are considered to be faulty. The trans-ducer fault signal is immediately activated andall reflash signals from the channel are inhib-ited. The channel is also automatically discon-nected from the average value measurement.

A transducer fault is indicated as a normal alarmwith the flashing indicator and an activation ofthe audible alarm and self-supervision outputrelays. On the digital display the letter F and thechannel number are shown and the event is alsostored in the local event register. The channelreturns to normal when the transducer has op-

erated within the specified range for a time notshorter than the longest selected channel start-ing or resetting time plus a basic time of 15 s.

When necessary the measuring range may benarrower by definition than the measuring rangeof the concerned measuring transducer. Thenarrower range may be defined by means of theparameters INP. SUPERVISION HI LIMITand INP. SUPERVISION LO LIMIT in thematrix display. When the supervision range is tobe changed via the serial interface the S 51 andS 52 parameters are used.

S 51 +/–0.000…9999 = transducer supervisionHI limit value

S 52 +/–0.000…9999 = transducer supervisionLO limit value

Input oscillation For each transducer input a permitted maxi-mum number of events (set-point transitions)per minute may be defined. If the number isexceeded the storing of new events is stopped.The channel is forced into the active state andremains so until no set-point transitions havebeen recorded within two minutes. Thereafterthe channel returns to normal operation.

The purpose of the channel input oscillationsupervision is to prevent a transducer fault fromoverloading a higher level system by continu-ously transmitting event messages.

The channel-specific oscillation supervision pa-rameter INP.OSC.MONITOR is keyed in anddisplayed on the front panel or it may be set viathe serial port with the S53 parameter.

S530 = the oscillation supervision out of function1…255 = permitted number of events/min

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Earth-fault The analogue part of the annunciator, i.e. thechannel input circuitry, is floating and by thatmeans galvanically isolated from earth. Thisfeature enables the annunciator unit to be pro-vided with a built-in earth-fault supervision forthe transducers, the transducer wiring and thechannel inputs. The sensitivity of the earth-fault supervision is 5…10 kΩ. When an earth-fault is detected the EF letters appear in thedigital display. The audible alarm output and

the self-supervision output are activated. Theindication persists until the earth-fault situationis over. The earth-fault supervision may be setout of function by removing the S1 jumper onthe mother PC board. The jumper is madeaccessible by removing the front panel and bydrawing the supply module to the left.

WARNING! Switch off the auxiliary supplybefore the auxiliary power module is withdrawn.

Set-points Each channel may be given up to four set-pointsaccording to two principles. The first principleincludes two HI set-points and two LO set-points. The second principle includes one HIset-point and one LO set-point and further onerise time and one fall time set-point. When theinput signal exceeds or goes below a set-pointand after the channel starting delay has timedout, an alarm indication is obtained accordingto the selected sequence scheme. An audible

alarm is obtained if selected and realarms areprovided if being configured. The indicationsand the output relays are reset according to theselected sequence scheme, after that the meas-ured value has returned to normal the channelresetting time has elapsed and the requiredacknowledgements have been performed. Allset-point value transitions and resettings arerecorded with time stamps and stacked in theinternal event register.

Alternative 1.Two HI and twoLO set-points

Measurement value

0 %

100 %

Measuring range

Time

HI trip set-point

HI alarm set-point

LO alarm set-point

LO trip set-point

Startingdelays

Resetting delays

Resetting delay

Startingdelays

Example showing set-point value transitions.The arrows indicate activation and deactivationof the set-point value function after that thechannel starting and resetting times have elapsed.Also note the deadband function.

The set-point values are set with the push-buttons and the matrix display using the HITRIP POINT, HI ALARM POINT, LO

ALARM POINT and LO TRIP POINT pa-rameters. Over the serial port the setting of theset-points is performed using the following pa-rameters:

S1 +/–0.000…9999 = HI alarm set-pointS2 +/–0.000…9999 = HI trip set-pointS3 +/–0.000…9999 = LO alarm set-pointS4 +/–0.000…9999 = LO trip set-point

12

Channel startingdelay

The activation of the channel may be delayed by0.5 s to 255 s from transition of a set-pointvalue. Using the matrix display this is performedwith the RESP. TIME parameter of the sub-menu of the set-point setting. When the pro-gramming is done via the serial interface the S 5,S 6, S 7 and S 8 parameters are used.

NB The input delay of the trip set-point valuemust exceed or equal the delay of the alarm set-point value.

S 5 0…255 = starting time in seconds of HIalarm set-point

S 6 0…255 = starting time or rise time limitin seconds of HI trip set-point

S 7 0…255 = starting time in seconds of LOalarm set-point

S 8 0…255 = starting time or fall time limitin seconds of LO trip set-point

Channel resettingdelay

The channel resetting after a transition of a set-point value may be delayed by 0.5 to 240 s.Using the matrix display the resetting time isprogrammed with the RESET TIME param-eter. When the programming is done via theserial interface the S 9, S 10, S 11 and S 12parameters are used.

N.B. The resetting delay of a trip set-point valuemust exceed or equal the resetting time of analarm set-point value.

S 9 0…255 = resetting time in seconds of HIalarm set-point

S 10 0…255 = resetting time in seconds of HItrip set-point

S 11 0…255 = resetting time in seconds of LOalarm set-point

S 12 0…255 = resetting time in seconds of LOtrip set-point

Deadband Each channel may be given an individual dead-band value entered in per mille of the measuringrange. Transition of the set-point value acti-vates the channel but for the resetting to occurthe input value must go below or exceed the set-point value by a value determined by the dead-band setting. This to prevent "pumping" of achannel to block the serial communication chan-nel.

The deadband value is entered via the matrixdisplay with the DEADBAND parameter andvia the serial interface with the S 46 parameter.

S 46 0…99 = deadband value in per mille ofthe measuring range

13

Measurement value

0 %

100%

Measuring range

Time

HI alarm set-point

LO alarm set-point

Starting delay

Starting delayStarting delay

Startingdelay

Alternative 2.One HI and one LOset-point and onerise time and onefall time set-point

Example showing set-point value transitions.The arrows indicate activation and deactivationof the set-point value function after that thechannel starting and resetting times have elapsed.Also note the effect of the deadband setting.

In this case two rate of change values mayconstitute limit value criteria in a addition to thetwo ordinary set-points of the channel. The riseand fall rates, are in this case determined as theratio of the input value change to the channelinput signal range expressed in per cent perminute. If the rise or fall rate exceeds the set limitvalue for a period of time longer than the chan-nel starting time the limit value is activated.Correspondingly the limit value is reset if therise or fall rate goes below the set limit value fora period of time longer than the channel startingtime. The rise and fall rate functions supersedethe HI and LO Trip set-points of the earlierAlternative 1.

If the rise and fall rate limits are given percentagevalues by programming, the channel automati-cally will function according to Alternative 2.With the push-buttons and the matrix displaythe percentage values are entered using the RISERATE HIGH and FALL RATE HIGH param-eters. Via the serial port the percentage valuesare given using the parameters S 21 and S 22.

S 21 0 = rise rate alarm out of operation1…100 = signal value increase in per cent

of the measuring range of theinput/minute

S 22 0 = fall rate alarm out of function1…100 = signal value decrease in per cent

of the measuring range of theinput/minute

14

Grouping of reflashoutputs

Each transition of a set-point value may initiateoperation of two free-selectable group alarmrelays. The annunciator unit contains six groupalarm output relays. To facilitate the configura-tion of the control signals for the output relayseach set-point value is related to two reflashoutputs, A and B.

Via the matrix display the configuration ofgroup alarms is performed on a per set-pointvalue basis using the parameters RFL A TO RLYand RFL B TO RLY of the submenu of the set-point value setting routine. Via the serial inter-face the grouping information is entered usingthe parameters S 13…S 20.

S 13 0…6 = HI alarm set-point, output AS 14 0…6 = HI alarm set-point, output BS 15 0…6 = HI trip set-point or rise time

limit, output AS 16 0…6 = HI trip set-point or rise time

limit, output BS 17 0…6 = LO alarm set-point, output AS 18 0…6 = LO alarm set-point, output BS 19 0…6 = LO trip set-point or fall time

limit, output AS 20 0…6 = LO trip set-point or fall time

limit, output B

The parameter value 0 denotes that the reflashoutput has not been connected to any outputrelay. The parameter values 1…6 indicate towhich output relay the set-point has been con-nected.

Principle of the configuration of group reflash alarms.

1

Grouping

Group realarm 1

2

A

B

A

B

6

Realarm output 1

A

B

A

B

A

B

A

B

Alarm channel 1.HI alarm set-point

Alarm channel 1.LO alarm set-point

Alarm channel 1.LO trip set-point

Alarm channel 2.HI trip set-point

Alarm channel 16.LO trip set-point

Group realarm 2

Group realarm 6

Selection ofrealarm type,

relay 2


relay 1


relay 6

Realarm output 2

Realarm output 6

Alarm channel 1.HI trip set-point

15

Interlockings The annunciator unit includes four blockinglines which, by means of a flat cable, may beextended over to other SACO units as well.

Each set-point transition may be linked toactivate one or two blocking lines. An activa-tion is obtained when one of the four set-pointvalues of a channel has been exceeded or gonebelow. An activated blocking line may be usedfor blocking other channels or for blocking ofthe reflash outputs A only of other channels.

The blocking instructions may be entered viathe matrix display using the INTERLOCKINGSparameter and in the submenu the followingfunctions may be selected: 1: GROUP_FUNCT._ and 2:GROUP_FUNCT._.

Via the serial interface the instructions may beentered using the parameters S 28…S 31.

Blocking function 1S 28 0 = activation of blocking line

1 = channel reflash output A blocked2 = entire channel blocked

S 29 0 = not connected to a blocking line1…4 = connected to a blocking line

Blocking function 2S 30 0 = activation of blocking line

1 = channel reflash output A blocked2 = entire channel blocked

S 31 0 = not connected to a blocking line1…4 = connected to a blocking line

Principle figure of blocking functions.

TYPE OF BLOCKING0 = activation of blocking line1 = channel reflash A blocked2 = entire channel blocked

1 2 3 4

CHANNEL 1/__ Function 1Function 2




CHANNEL5/__ Function 1Function 2








CHANNEL13/__Function 1Function 2




ANNUNCIATOR UNIT No _____

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

Transducer

BLOCKING LINES

16

Registration ofalteration ofmeasured value

When the annunciator unit is used as an I/Ounit of a large system, a spontaneous messageinitiated by an alteration of the input value maybe obtained in the following way. An inputvalue alteration of a given size is registered andstored in the event register, from which it isautomatically sent to the reporting level of theSPACOM system. The predefined value of al-teration of the measured is given as scaled valueand counted from the previous registration of analteration.

The value of the alteration is entered via thematrix display with the DELTA VALUE para-meter or via the serial interface with the S 32parameter.

S 32 0.000…9999 = input value alteration asa scaled quantity

If no registration is needed the value 9999 maybe entered.

Calibration On delivery the annunciator units are factorycalibrated to a channel accuracy better than 0.5 %.The most convenient way of changing the cali-

bration is to change the scaling. In this wayinaccurate transducers may be calibrated toprovide a correct measurement.

Channel text Each channel may be given a 10 characterchannel text. This may be entered via thematrix display using the CHANNEL TEXT-

parameter or via the serial interface using the S50 parameter:

S 50 XXXXXXXXXX = 10 characters as perchannel

Reading ofmeasured value

The value measured by a particular channel maybe presented as a scaled value in the digitaldisplay or in the matrix display in either bargraph or curve form. The measured value canalso be read via the serial interface using theinput parameters I1 and I2:

I1 0 = field contact open1 = field contact closed+/– 0.000…9999= measured value in

scaled units

I2 0000…1023 =unscaled measured value inbinary form.

Sequencepatterns forthe alarm andtripping functions

Annunciatorchannel sequences

The annunciator unit may be given one out offive standardized flashing and resetting sequen-ce patterns by programming. The most suitablesequence pattern is selected. Via the matrixdisplay the sequence pattern to be used is se-lected using the ALARM SEQUENCE param-eter and via the serial interface using the para-meter S 24.

S 24 0 = ISA A, automatic channel reset1 = ISA A-1, automatic channel reset,

manual audible reset2 = ISA M-1, manual channel reset,

manual audible reset3 = ISA R-1, manual channel reset,

visual ringback, manual audible reset4 = DIN 19235, visual ringback,

manual audible reset

The above sequence patterns are shared by allthe 16 channels of the annunciator unit. This iswhy they are referred to channel 0, which hasbeen reserved for all the module-specific para-meters.

The alarm sequence patterns may be supple-mented on a per channel basis in three differentways by programming. Through the matrixdisplay the programming is performed using theALARM SEQUENCE parameter and via theserial interface using the S 48 parameter.

S 48 0 = visual indication according tothe selected sequence pattern ofthe annunciator unit

1 = visual indication according tothe selected sequence pattern ofthe annunciator unit but includingaudible ringback on return to nor-

mal.Applicable only in combination withthe ISA R-1 and DIN 19235sequence patterns.

2 = indication with steady light onset-point transition. The indicationdisappears automatically on return tonormal. No audible alarm.

The acknowledge and reset measures are carriedout in accordance with the procedure defined bythe selected sequence scheme.

17

Automatic resetISA A

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

Field contact

Acknowledge

Reset of audible output (Silence)

Audible output

Field contact

Visual alarm indicator

Acknowledge

Audible output

Field contact


Acknowledge


Audible output

Reset

Field contact


Acknowledge


Audible output

Reset

Field contact


Acknowledge


Audible output

Reset

Automatic reset, separate reset of audible outputISA A-1

Manual reset, separate reset of audible outputISA M-1

Manual reset, visual ringback and separate reset of audible output ISA R-1

Manual reset, visual ringback if acknowledge is done before the alarminput returnsto normal state, separate reset of audible outputDIN 19235

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF

ONOFF


Selectable channel sequence patterns.

18

Trip sequences The sequence types for the trippings are thesame as those for the alarms, except for the flashfrequency of the visual indicator. The flash

frequency indicating transition of a trip set-point is twice that of the frequency indicatinga transition of an alarm set-point.

First-out alarmand first-out trip

The digital display always displays the first-outalarm or the first-out tripping after the last reset.The two right-most digits of the display indicatethe channel number and the two left-most digitsindicate the type of alarm or tripping.

The following types are indicated:u = LO alarm level has been gone belown = HI alarm level has been exceededu u = LO trip level has been gone belown n = HI trip level has been exceeded

Local/remote control The annunciator unit has been provided withtwo control inputs, marked LOCAL and RE-MOTE. The control inputs, which are to becontrolled with separate normally open con-tacts, are energized by the same 48 V dc voltageas the rest of the field contact inputs of theannunciator unit. When the annunciator unit isused in an unmanned station, the audible alarmoutput may be set out of function by activatingthe REMOTE input. On the other hand, dur-ing local maintenance work the group realarm

signals for the network control centre may beblocked by activating the LOCAL input. Whenneither control input has been activated bothaudible alarm and group realarms are obtained.The LOCAL or REMOTE mode may also beselected via the serial interface by using theparameter V1.

V1 1 = local/remote mode2 = local mode3 = remote mode

Real time clock The annunciator unit includes a real time clockwith battery back-up. The clock circuit providestime marks comprising year, month, day, hour,

minute and second. The clock time is shown inthe matrix display when the basic display hasbeen selected.

Clock synchro-nization

When the annunciator unit constitutes part of aSPACOM system the clock will be synchro-nized automatically once every second by meansof a synchronizing pulse via the SPA bus. Theclock may also be synchronized via the synchro-nizing input on the terminal block using theminute synchronizing principle. The clock is

moved back or forth to the nearest minute at themoment the SYNC. input is energized with the+48 V dc voltage provided by the annunciatorunit itself. The actual synchronization takesplace at the moment the control input circuit isclosed. The minimum required control pulselength is 100 ms.

Time setting The basic time setting is performed through thematrix display and a submenu of the TIMESETTING parameter. Years, months and daysare set with the DATE parameter. With the

TIME parameter the hours, minutes and sec-onds are set. Via the serial interface the timesetting may be carried out using the T param-eter.

19

Contact outputs The annunciator unit includes eight outputrelays. One serves as the audible alarm outputrelay, one as the alarm output relay of the self-

supervision system of the unit and six of theoutput relays serve as realarm output relays andmay be grouped as required by the application.

Groupable outputrelays

Each set-point value transition may be pro-grammed to operate two output relays. To fa-cilitate the programming each set-point is pro-vided with two reflash outputs, A and B. Thereflash output A only or both reflash outputsmay be blocked. The reflash outputs are con-

nected to the realarm output relays over a soft-ware connection matrix, with the set-point valuetransitions on the input side and the realarmoutput relays on the output side, also see section"Grouping of reflash outputs".

Setting of realarmoutput relayfunction mode

Each realarm output relay may separately beprogrammed for one out of four selectable func-tional modes. As the functions are related tooutput relays, which are common to all the

alarm channels, these parameters are pro-grammed on a per unit basis and for the pro-gramming channel 0 is used.

Channel starting delay Channel resetting delay

Alarm 1

Alarm 2

Acknowledge

Realarm type 0

Realarm type 1

Realarm type 2

Realarm type 3

Principle diagram illustrating the realarm output relay function modes. Alarms 1 and 2 assumed tobeing grouped to the same output relay.

Through the matrix display the output relayprogramming may be performed using a sub-menu of the REFL.RELAY MODE parameter.Via the serial interface the programming may bedone using the following parameter:

Realarm relay 1S 1 0 = field signal following realarm

1 = memory controlled realarm2 = pulse shaped realarm 0.3…255.0 s3 = field signal following realarm, which is

interrupted for 0.3…255.0 s each timea new alarm signal joins an alreadyalert realarm signal

The realarm output relays 2…6 are program-med in the same way by using the parametersS2…S6.

20

Pulse length When the pulse shaped realarm has been selectedthe pulse length may be defined through thematrix display using the PULSE parameter or via

the serial interface using the parameter S 23.

S 23 0…255 = pulse length in seconds

Audible alarmoutput relay

The audible alarm output relay is operated assoon as a set-point value of any of the 16 channelshas been crossed. Further each channel may beseparately programmed to initiate an audible

alarm on return to normal of the alarm channel.When a channel has been programmed for theinput signal following mode of indication, theaudible alarm output relay is not operated.

Channel 1

Channel 2

Channel 3

Channel 16

Audiblealarmmemory

Resetting of audible alarm(Silence)

Audible alarmoutput relay

Principle diagram of the audible alarm function.

Self-supervisionsystem output relay

The annunciator unit is provided with a built-in, sophisticated self-supervision system whichoperates a normally energized output relay. Ondetection of an internal fault or upon loss of

auxiliary supply the alarm output relay drops offand the normally (=healthy and energized unit)open alarm contact closes.

21

Average valuemeasurement

The annunciator unit incorporates an averagevalue measurement function which is con-nected to channel 0. The average value functionis a program which calculates the scaled arith-metic average value of all the channels that havebeen incorporated in the measurement.

A common application of the average value

measuring function is the supervision of theexhaust gas temperatures of a diesel engine. Theaverage value then provides an indication of theloading condition of the engine and on a percylinder basis one can define how high thetemperature deviation from the average value isallowed to grow during various engine loadingconditions

Average valueset-point

Two set-points may be associated to the averagevalue. One of the set-points is a upper set-point,which may be connected to one or two grouprealarm outputs. The other set-point is a lowerset-point, the signal of which is used to blockdeviation alarms from channels connected tothe average value function.

With the aid of the matrix display the settingvalue of the upper set-point is keyed in using the

AV. TRIP POINT parameter and the lower set-point using the AV. LOCK POINT parameter.Via the serial interface the setting is performedusing the parameters S 26 and S 27.

S 26 +/– 0.000…9999= upper set-point valueof average value

S 27 +/– 0.000…9999= lower set-point valueof average value

Negative deviation set-pointof a particular channel at 33% of the measuring range

0

100

200

300

400

500

600

°C

01

10 20 30 40 50 60 70 80 90 100 % 5 mA

HI set-point ofthe channel

Hi set-point ofthe average value

Average valueblocking set-point

Positive deviation set-pointof a particular channelat 33% of the measuringrange

Channel input

Positive deviation set-pointof a particular channelat 83% of the measuringrange

Temperature

Negative deviation set-pointof a particular channel at 83% of the measuring range

Average value function in association with exhaust gas temperature supervision of diesel engine.

22

Grouping of averagevalue set-points

Both set-points may be connected to the re-alarm outputs via a submenu of the set-pointvalue setting menu if performed with the aid ofthe matrix display. The concerned parametersare named RFL A TO RLY and RFL B TO RLY.If the programming is performed via the serialinterface the parameters S 28…S 31 are to beused.

Upper set-point, reflash AS 28 0 = not connected

1…6 = group realarm output 1…6

Upper set-point, reflash BS 29 0 = not connected


Blocking set-point, reflash AS 30 0 = not connected


Blocking set-point, reflash BS 31 0 = not connected


Delay of averagevalue set-point alarm

Both set-points may be given response andresetting delays. With the aid of the matrixdisplay the delay times are set by means of thesubmenu parameters RESP. TIME and RESETTIME. Via the serial interface the setting isperformed using the parameters S 32…S 35.

S 32 0…255 = response time in seconds ofupper set-point

S 33 0…255 = resetting time in seconds ofupper set-point

S 34 0…255 = response time in seconds ofblocking set-point

S 35 0…255 = resetting time in seconds ofblocking set-point

External referencevalue

Sometimes there may be a need for using anexternal signal as a reference of the loadingsituation of the engine. Then one channel maybe dedicated for the purpose of performing theaverage value function. The input signal con-nected to this channel then corresponds to e.g.the loading situation of the engine. This channelmust then be given the setting values of theaverage value channel. The external referencechannel may also be used for obtaining a differ-ence supervision of two channels.

With the aid of the matrix display the channel isselected by means of the parameter EXT.REF.CHANNEL. and via the serial interface usingthe parameter S 36.

S 36 0 = no channel selected, normal averagevalue function

1…16 = one of the channels 1…16 usedas a reference

Connection ofchannels to theaverage valuecalculation

The channels are to be connected to the averagevalue calculation one by one. By the support ofthe matrix display the channels are connected tothe average value calculation by using theREF.VALUE DEVS menu and then the sub-menu INCLUDED?. Via the serial interface the

same programming is performed using thechannel-specific S 23 parameter.

S 23 0 = channel not connected to average valuecalculation

1 = channel connected to average valuecalculation

23

Setting of channel-specific deviationset-points

Any channel connected to the average valuecalculation may be given a upper set-point whichequals the HI trip set-point of an ordinarychannel. Further the channel may be providedwith a HI and a LO deviation set-point inrelation to the average value. As the permitteddeviation from the average value usually is higherat lower engine loading levels, the deviation set-point may be given separately for low loads(33%) and heavy loads (83%). The permitteddeviation will then be calculated by linear inter-polation between the given set-points. Whenthe engine loading exceeds 83% the deviationset-points are extrapolated. When the averagevalue function is used for the temperature super-vision of the exhaust gases of an engine and thescale range selected is 0…600°C, then 33%corresponds to the scale value 200°C and 83%to the scale value 500°C.

By support of the matrix display the deviationset-point values may be entered in a submenu ofthe main menu REF.VALUE DEVS using theparameters +DEV 33%, –DEV 33%, +DEV 83%

and –DEV 83%. Via the serial interface thedeviation set-points are entered using the para-meters S 24…S 27.

S 24 +/–0.000…9999 = positive deviation at83% of measuringrange

S 25 +/–0.000…9999 = positive deviation at33% of measuringrange

S 26 +/–0.000…9999 = negative deviation at83% of measuringrange

S 27 +/–0.000…9999 = negative deviation at33% of measuringrange

As previously mentioned the setting of the HIset-point value is performed by the support ofthe matrix display using the HI TRIP POINTparameter. When set via the serial interface thecorresponding parameter is named S 2.

S 2 +/–0.000…9999 = HI trip set-point

Grouping ofchannel-specificset-point values

Crossing a deviation set-point value activatesthe same functions as exceeding the HI alarmset-point. Thus, crossing a deviation set-pointvalue also causes a group realarm output relay topick up, if connected to the HI alarm set-point.The response times of the deviation set-points,too, equal those of the HI set-point values.

By support of the matrix display the grouping isperformed using the HI ALARM POINT sub-menu. The grouping parameters are named

RFL A TO RLY and RFL B TO RLY. Via theserial interface the grouping is carried out usingthe parameters S 15 and S 16.

S 15 0 = reflash A not connected1…6 = reflash A connected to realarm

output 1…6S 16 0 = reflash B not connected

1…6 = reflash B connected to realarmoutput 1…6

Setting of responseand reset times

The input response times and the channel reset-ting times are also set by means of a submenu ofthe alarm set-point value setting HI TRIP POINT.The concerned parameters are named RESP.TIME and RESET TIME. When carrying outthe setting via the serial interface the correspond-ing parameters are named S 6 and S 10:

S 6 0…255= input response time of the HIalarm set-point and deviationset-point expressed in seconds

S 10 0…255= reset time of the HI alarm set-point and deviation set-pointexpressed in seconds

24

The protocol of the SPA-bus is of the ASCIItype and it has been described in detail in theproduct description 34 SPACOM 2EN1.

The LON TALK protocol is described in thedocument LON Bus - LON WORKS Networkin Protection and Control System; 1MRS750035-MTD ENCommunication

protocol

Serialcommunication

The annunciator unit is provided with a multi-drop type serial interface. Via the serial interfacethe annunciator unit may also be connected toother higher level systems provided that theSPA-bus protocol is implemented to the con-cerned system. The annunciator unit SACO

16A3 may be used for both data logging andevent handling when connected to a higher levelsystem. Connection to a LON-bus system is alsopossible using the LON/SPA Gateway, SPA-ZC 100.

Bus connectionmodules

The SPA-bus i preferably utilized by fibre-opti-cal connection due to the high interferencesurrounding where the units are used. Electricalconnection for the SPA-Bus is also possible butnot recommended. For the connection of theserial bus to the annunciator unit a bus connec-tion module of the SPA-ZC…-series is needed.The bus connection modules are attached to theback plate of the annunciator unit by means ofthe enclosed fastening sleeves. The followingtypes of bus connection modules are available:

The SPA-ZC21 is used in combination with afibre-optic bus. The fibre-optic bus forms a loopand accordingly the bus connection modules areprovided with one input and one output con-nector for the fibre-optic cables. The fibre-optic

cables may be of the plastic core type or of theglass fibre type. The cable type for which the busconnection module is intended is indicated bythe last two letters of the type designation. Theletter B stands for a plastic core cable and theletter M for a glass fibre cable. The first of thetwo letters refers to the outgoing cable and thelast letter to the incoming fibre cable. For plasticcore cables the maximum data transfer distanceis approximately 30 m and for glass fibre cablesat the moment approximately 2000 m.

SPA-ZC 17 may also be used. SPA-ZC 17 is thesame as SPA-ZC 21 but with separate powersupply, which enables the rest of the SPA-Bus tostay intact in an event of power failure in oneSPACOM unit.

Rear view of the annunciator unit with a bus connection module attached to the terminals.

1 13

2 14

3 15

4 16

5 17

6 18

7 19

8 20

9 21

10 22

11 23

12 24 x4

x3

x2

x1

x5

SPA1 1 0 0

RS4850 0 1 1

1S

0M

SPA-ZC 21BBBM

MBMM

RS 951 021-

Tx Rx

1 5432

-----OPEN-----

25

Transferred data Via the serial interface the following informa-tion may be read from the annunciator unit:– event register data with attached time labels.

The events may be set-point value transitionsor predefined measurement value changes

– measurement values– setting values and parameter settings– set-point activations

The following information may be transmittedto the annunciator unit:– setting values and parameter values– control commands to the output relays– clock synchronizing signals

Event register for theSPACOM reportingsystem

A separate register for 30 events facilitates theconnection of the annunciator unit to theSPACOM reporting system. The events arestored including event code, time marking inseconds and channel number. The contents ofthe event register is cyclically read by the repor-

ting unit. The events are then, on the reportinglevel, coordinated with events from the otherannunciator units and placed in chronologicalorder on the basis of the time markings. Afterthis the events may be printed out on a localprinter or retransmitted to a higher system level.

Overflow

Overflow

Time Slave Channel Code21

500

Adding of users text

Event register

Clock

SPA-bus

Synchronization

SACO 100M

Printer

Host systemTime Slave Channel Code

Channel CodeTime

Events

Clock0 - 60 s

SPACOM alarm module

Eventregister

Overflow

1 2 3 45 6 7 89 10 11

14 16

Event overflow matrix register

SPA-bus

Clock0 - 60 s

Time123....n

Channel Code

Events

SPA-bus

SPACOM protective relay module

Eventregister

1213 15

Time marking: year, month, day, hour and minute

123.......

484950

Principle diagram of the event reporting of the SPACOM system.

26

Address code The annunciator unit must be given an addresscode in order to enable communication withhigher system levels. The address code may beany number from 1 to 99 and it may be enteredthrough the matrix display and the front panelkeys using the MODULE ADD.CODE para-

meter. Via the serial interface the address codemay be given (if a previously given address codeis to be changed) using the V200 parameter:

V200 1…99 = module address code

Data transfer rate The normal data transfer rate of the SPA-bus is9600 Bd. The transfer rate may be reduced ifrequired. Through the matrix display and thefront panel keys the change is performed usingthe DATA TRNSF RATE menu and via theserial interface using the V201 parameter:

V 201 1 = 9600 Bd, the module regularlytransmits synchronizing signals.This feature is used for synchroniz-ing the flash sequences of two ormore interconnected annunciatorunits without a higher system levelincorporated.

2 = 9600 Bd3 = 4800 Bd4 = 2400 Bd5 = 1200 Bd6 = 300 Bd

Auxiliary powersupply

Supply voltage range

The standard auxiliary power module of theannunciator unit covers any ac or dc auxiliaryvoltage within the range 80…265 V. On re-quest the annunciator unit is provided with an

auxiliary power module intended for the supplyvoltage range 18…80 V dc. The auxiliary powermodules are provided with two identical supplyinputs. Generally only one is used.

Field contact supply 48 V -

Logic supply 8 V-

Relay supply 24 V -

20

21

22

23

24

Supply 1

Supply 2

SPGU

Principle diagram of the auxiliary power supply system.

27

Double supply When the annunciator unit is to be supplied fromtwo sources it must be noted that the two supplyinputs of the auxiliary power module are galvani-cally interconnected. For this reason one of thesupply sources must be fitted with a galvanicseparation. The galvanic separation may be car-ried out by means of an isolating transformer inac circuits or a DC/DC-converter in dc circuits.The most common solution is that one of theinputs is energized from an AC source and thissupply is provided with an isolating transformer,≥ 30 VA, with an output voltage within the range80…265 V. The other input may then be con-nected to a dc source, e.g. a station battery, alsowithin the range 80…265 V dc. The auxiliary

power source with the highest voltage level will bethe one supplying energy to the annunciator unit.

The dielectric test voltage between the auxiliarysupply inputs and the electronics of the annun-ciator unit is 2 kV, 50 Hz, 1 min.

N.B.No double supply can be arranged using thesupply module for the input voltage range18…80 V DC. In this case, on the other hand,the auxiliary supply inputs are parallelled inorder to avoid overloading of the input circuits,especially if the 24 V DC outputs are used forthe supply of transducer amplifiers.

20

21

22

23

24

Supply 1

Supply 2

220 VAC

110 VDC

SACO 16D3

SPGU

Principle diagram of a doubled auxiliary supply.

In the above figure Supply 1 is 220 V ac fed overan isolating transformer with the transformingratio 1:1, Supply 2 is a DC supply taken from a110 V station battery.

Thus in the above example energy is normallytaken from the AC supply and the DC supplyimmediately takes over if the AC supply fails.

28

Self-supervision The built-in self-supervision system continu-ously supervises the internal voltages of theannunciator, the operation of the microproces-sor programmes and the function of the electro-nics. On detection of an internal malfunction anautomatic reset and reinitiation is carried out. Ifthe failure disappears, the normal operationscontinue.

The self-supervision system controls two LEDindicators marked ON and FAULT on the front

panel. If a fault is detected in the program execu-tion, in the function of the electronics or in thesupply voltage levels, the FAULT indicator goeson and the self-supervision system output relayoperates closing a NO contact. If the supplyvoltages disappear too, the ON and the FAULTindicators both turn off. The output relay of theself-supervision system operates (the relay dropsoff and its contact closes) even in this case becausethe output relay is energized under normal con-ditions and the output contact is open.

1 Output relay ofthe selfsupervisionsystem

Blocking of realarms andlocking of the serial port

Internalsupervisioncircuits

24 V undervoltage

5 V undervoltage

48 V undervoltage

Supervision of the microprocessor and the execution of itsprogram (Watch dog)

Fault

Earth fault

Transducer fault

Principle diagram of the self-supervision system.

29

Mounting The housing of the annunciator unit is prima-rily intended for flush mounting. The case isfixed to the panel by means of two pairs ofmounting brackets. The annunciator unit ispreferably mounted in eye-height.

The required depth behind the panel may bereduced by means of a raising frame which maybe ordered separately. The correspondinglyshorter mounting brackets are delivered togetherwith the raising frame. Three types of raisingframes are available:

– type SPA-ZX 301, raising frame, 40 mm– type SPA-ZX 302, raising frame, 80 mm– type SPA-ZX 303, raising frame, 120 mm

The mounting frame of the annunciator case isfitted with a rubber gasket, which provides adegree of protection by enclosure to IP54 be-tween the annunciator case and the mountingpanel.

The annunciator units may also be mounted in19 inch instrument cabinets and mounting frames.For this purpose three types of mounting platesare available among the accessories. The height ofthe mounting plates is 4U (~178 mm) and thefollowing types have been specified.

– type SPA-ZX 304,mounting plate for two size 300 cases

– type SPA-ZX 305,mounting plate for one size 300 case

– type SPA-ZX 201,mounting plate for one size 300 case and onesize 100 case

Raising frame

SPA-ZX 301SPA-ZX 302SPA-ZX 303

209169129

74114154

a b

226

162

136

229

283249

2034

a b

Panel cut-out

214 ±1

139

±1

Dimensionaldrawings

30

Connection All terminals to facilitate input and outputconnections are located on the rear panel of theannunciator unit. The connector module carry-ing the transducer input connectors and theremote control input connectors is detachable.Thus it may be used as a separate connectionsocket when the annunciator unit is mounted,for instance in a control desk, in which case itmust be provided with a longer interconnectioncable. The space of the connector module iscovered with an optional sheet steel plate.

To facilitate the connection of the auxiliaryvoltages, the relay output circuits and the busconnection module the annunciator unit is pro-vided with terminal blocks for screw connec-tion. Each terminal may accommodate one ortwo wires with a max. cross section of 2.5 mm2.

The transduce input signals and the remote con-trol signals are connected to detachable screwterminal connector strips. Each terminal may ac-commodate a multistrand wire of 0.5…1.5 mm2.The connector strip is of the Weidmüller typeBLA-SLA.

1 13

2 14

3 15

4 16

5 17

6 18

7 19

8 20

9 21

10 22

11 23

12 24 x4

x3

x2

x1

x5

Rear view of the annunciator unit SACO 16A3.

31

Connection diagram

Connection diagram of the annunciator unit SACO 16A3.

4

5

6

7

8

9

10

11

12

16

17

18

19

Group alarm 1

Group alarm 2

Group alarm 3

Group alarm 4

Group alarm 5

Group alarm 6

Audible alarm

Internal fault

20

21

23

24

Supply 1N -

L +

N -

L +Supply 2

1Rx /Tx A

2Rx /Tx B

3GND

13RTS A

14RTS B

15+ 8 V

SPA-BUS

404142434445464748495051525354

Shunt+ Input- Input0 V+ 24 V

Shunt+ Input- Input0 V


+ 48 V

CH 1

CH 2

CH 3

CH 4

55 Shunt+ Input- Input0 V+ 24 V

565758596061626364656667686970717273747576



+ 48 VShunt+ Input- Input0 V

+ 48 V

CH 5

CH 6

CH 7

CH 8


787980818283848586878889909192939495969798




+ 48 V

CH 9

CH 10

CH 11

CH 12


100101102103104105106107108109110111112113114115116117118119120




+ 48 V

CH 13

CH 14

CH 15

CH 16


343536373839 + 48 V

2526272829303132

SilenceAckResetTestLocalRemoteSync+ 48 V

22

32

Power supply Before the auxiliary voltage is connected to theannunciator unit it must be checked that thevoltage complies with the specification of theauxiliary voltage of the unit. See marking on thealuminium profile. Also check that the equip-ment earth has been connected.

When the annunciator unit is to be suppliedfrom two voltage sources the sources must begalvanically separated from each other. As nogalvanic separation of the voltage sources isprovided by the power module of the annuncia-tor unit, it must be arranged outside the unit.See example in section "Double supply".

N.B. If the annunciator unit is to be suppliedfrom two auxiliary energy sources, a galvanicseparation must be arranged to one of the sup-plies, e.g. using an isolating transformer. Please,cf. the chapter "Double supply".

If the supply alternative 18…80 V DC is used,it is recommended that the two supply inputs ofthe annunciator unit are parallelled, in order notto overload the supply input circuits, especiallyif the 24 V DC output is used for the supply ofenergy to transducers.

Relay outputs The group realarm outputs are connected twoand two with one common wire. The audiblealarm and the self-supervision alarm outputsare, however, fully separated from each other.All the outputs relays have been set to provide acontact closing on operation. The relay boardtype SWOM 8A1 carries solderable program-ming pins by means of which the contact func-tion of each output relay separately may bealtered from normally open to normally closed,cf. the following list:

Audible alarmJ1 o o-o = NC contact, o-o o = NO contact

Self-supervisionJ2 o-o o = NC contact, o o-o = NO contact

Group realarm 1J3 o o-o = NC contact, o-o o = NO contact






Remote controlinputs

The remote control inputs are to be controlledby closing contacts. The control circuit voltage,

48 V dc, may be taken from the 48 V dc outputof the annunciator unit.

Transducer inputs The transducer circuits are wired to the connec-tors X1…X4. For each annunciator channelfour connection screws have been reserved. Fur-

ther, three connection screws have been re-served per every two channels.

The earth terminal is connected to the protec-tive sheaths of the transducer input cables. Whenthe input cables are individually screened two

sheaths are connected to one earth terminal.The cable sheath is generally earthed in one endof the cable only.

Principle diagram of the connection of a transducer.

Transducer supply

48 V DC

24 V DC

+

-

DIFF

G

mA

Shieth earth

Field contactcircuit supply

Shunt resistor 270 Ω

+ Analogue terminal

- Analogue terminal

Analogue GND

Current generator

Input amplifier

Analogueswitches

33

Transducerconnections

The annunciator unit may be connected to alarge variety of different measuring transducertypes, both standardized and customer-speci-

fied types. The different transducers are connec-ted to the channel inputs as follows.

Current transducers When a current transducer is connected to thechannel input, the terminals SHUNT and +IN-PUT are linked together as are the terminalsGND and –INPUT too. The incoming currentsignal is connected to the +INPUT terminal andthe outgoing current signal to the –INPUT ter-minal. In case the transducer requires an auxiliarysupply, it may be taken from the +24 V terminal,which is a common terminal for two channels.

The permitted current drain from the +24 Vterminal is 320 mA. Field transducers without areturn lead are connected to the +24 V terminaland the +INPUT terminal.

If an external shunt resistor is to be used, itshould be connected between the terminals +IN-PUT and –INPUT. The channel input maythen be programmed for e.g. the measurementrange 0…1 V.

48 V DC

24 V DC

+

-

DIFF

G

mA

mA

Transducer supply

SensorTransduceramplifier

SHUNT

+ INPUT

- INPUT

0 V

Principle diagram for the connection of current transducers.

Voltage transducers When a voltage transducer is connected to thechannel input, the GND and the –INPUT arelinked together. The incoming voltage signal isconnected to the +INPUT terminal and the

return voltage signal lead to the –INPUT termi-nal. If required, the transducer may be poweredfrom the 24 V dc terminal.

48 V DC

24 V DC

+

-

DIFF

G

mATransducer supply

SensorTransduceramplifier

Principle diagram for the connection of voltage transducers.

34

Resistancetransducers

The resistance transducers may be connected tothe channel input using either the three-wire orthe two-wire connection principle. In the three-wire measuring principle an automatic compen-sation of the transducer wire resistance is pro-vided. When the two-wire measuring principleis used the compensation of the conductor re-sistance must be carried out manually by firstcalculating the temperature change of a particu-lar transducer as a function of the conductorresistance. The scaling is then altered so that itis moved down with the value corresponding tothe conductor resistance. The scaling is moveddown in both the 0% end and the 100% end ofthe measuring range.

Example:The conductor resistance of a Pt 100 sensor is1.2 Ω corresponding to a calculated temperaturechange of 3°C. The scaling is then defined sothat in stead of the range –20…230°C the value–23°C is keyed in at the 0% end of the scale andthe value 227°C in the 100% end of the scale.

The temperature measurement range may alsointentionally be transferred downwards by in-serting a series resistor in the temperature sensorcircuit. The resistor, corresponding to the tem-

perature value by which the measurement rangeis to be transferred, is to be connected to the+INPUT terminal. The scaling is then trans-ferred downwards following the description givenin association with the two-wire connection.

If the channel input is programmed for one ofthe adjustable resistance ranges, the calibrationis performed with the potentiometer on thefront edge of the analogue input module SWAM16A1. The potentiometer is made accessible bydismounting the front panel of the annunciatorunit. In order to enable the calibration of thechannel input a resistor corresponding to 0°C ofthe particular sensor is to be connected to theinput. The channel to be calibrated is thencalled up on the display and the potentiometeris turned until the display shows 0°C. Thecalibration is now finished and the front panelmay be refitted. The calibration is valid for anychannel which has been programmed for theadjustable scale. Only one adjustable scale perannunciator unit may be defined.

In the three-wire connection the sole wire isconnected to the +INPUT terminal and the twoparallel wires are connected to the –INPUT andGND terminals respectively.

Principle diagram of the two-wire connection.

48 V DC

24 V DC

+

-

DIFF

G

mA

Resistor sensor

48 V DC

24 V DC

+

-

DIFF

G

mA

Resistor sensor

Principle diagram of the three-wire connection.

In the two-wire connection the –INPUT andGND terminals are linked together. The resis-

tor is connected across the input +INPUT and–INPUT

35

Field contact signals The internally generated 48 V dc voltage is usedas the field contact circuit voltage. The 48 V dcterminal is fed over an internal series resistor.Thus, when the field contact closes the terminalpotential drops to a few volts. Therefore eachfield contact must be supplied via a 48 V dcterminal, despite the fact that two channelsshare one +48 V dc terminal.

The internally generated 24 V dc may be usedfor feeding the field contact circuit too, but if the24 V dc terminal is used it must be providedwith a 4.7 kΩ series resistor.

Further the SHUNT and +INPUT terminalsare linked together as are –INPUT and GNDterminals too.

The field contact is then connected either acrossthe 48 V dc and the +INPUT terminals or withthe 4.7 kΩ series resistor across the 24 V dc and–INPUT terminals.

The channel input is programmed to accept aclosing field contact by setting a HI set-point inthe middle of the measurement range and for anopening field contact a LO set-point is keyed inthe middle of the measurement range.

48 V DC

24 V DC

+

-

DIFF

G

mA

Field contact

Principle diagram of a field contact connection.

Serial busconnection

A series of bus connection modules used forconnecting the annunciator unit to the SPA-busis described in section "Bus connection mod-ules". The bus connection modules are attached

to one of the terminal blocks by means of theenclosed fastening sleeves and according to theenclosed mounting instruction.

Interlocking busconnection

To enable the 16-pole flat cable to be connectedto the interlocking bus, the input connectormodule must be dismounted. The flat cable isthen routed through the aperture of the rear

plate and connected to the flat cable connectorX9 on the mother PC board. Thereafter theinput connector module is refitted.

Annunciator start-upStarting is indicated on all occupied channels asa reset alarm. These "alarms" are not stored inthe event register.

An operational test may be performed to theannunciator unit by putting it into the testmode. During the test all display and indicatorfunctions are went through. The alarm channelindicators are tested both with respect to discon-

tinuity of light emitting diodes and short-circuitbetween adjacent light emitting diodes. Thedigital display goes through each number andthe matrix display shows a positive and a nega-tive picture. In this way every pixel of the matrixdisplay will be checked.

The input and output circuits of the annunciatorunit must be tested using primary test methods.

36

Edition andchange ofchannel legendfoil

The annunciator unit is provided with a translu-cent foil for channel legends. The legend foilwhich is cut out from a sheet of ordinary drawingfilm, is inserted in a pocket behind the alu-minium front panel. After the front panel hasbeen dismounted the legend foil may be with-drawn from the pocket at the left hand edge of thefront panel.

The channel legend text may be written with a

drawing ink pen or a typewriter. When the firstline is written a few millimetres from the begin-ning of the line must be left empty in order not tocover the LED indicators.

The legend surface of one channel comprises 20 mmx 20 mm. The text may be divided into four lines.

A sheet of film with three printed legend foils areincluded in the delivery.

Front panel with partially withdrawn legend foil.

T 1GROUNDFAULT

TRIP

G 1

MOTOR

GROUND FAULT

REL.AY TRIP

Letter height 2,5 mm

Letter height 1,8 mm

1Identification numberof annunciator unit

FAULT

ON

Legend foil with two examples of written texts.

37

Programming The annunciator unit is characterized by itsversatility. At the same time it is extremely easyto use. The annunciator unit is fully customizableaccording to the user's requirements, as all theparameters are programmable and stored inreprogrammable solid state memory circuits.The parameter settings and changes may beentered afterwards which markedly facilitatesstart-up work. The setting and configuring maybe performed through the push-buttons and the

matrix display on the front panel or via the serialport of the unit.

IMPORTANT!The annunciator unit is set and configured as anoff-line measure, which means that the annun-ciator unit is switched off from the normalfunctions as long as the setting and configuringgoes on.

Setting throughthe display andthe push-buttons

The annunciator unit can be programmed withthe display and the plain-text push-buttons.The display always shows the meaning of thepush-button. Each time the annunciator unit isstarted up or the left-most push-button is pushed,the basic display appears on the screen. Besidesthe basic display four subdisplays are used,namely:

– the channel selection display through whichthe module parameters and the channel para-meters are selected

– the main menu display on which the basicfunctions are presented in plain text

– the submenu display on which parametersrelated to the basic function are presented

– the setting display on which parameter valuesof a submenu may be altered

A return to the previous display is always ob-tained with the RET push-button (Return push-button).

The five displays used in programming.

38

Basic display From the basic display access to the setting andconfiguration functions is obtained by pushingthe SET push-button. First a channel selectiondisplay appears on the screen.

Channel selectiondisplay

Through the channel selection display bothmodule-related (channel 0) and channel-related

parameters may be selected. Module-relatedparameters are obtained by pressing the push-button under the UNIT text. Channel-relatedparameters are called up by pressing the push-button under the CHAN text. Channel 1 is firstobtained. The presented display is called thebasic menu.

From the channel selection display access to thetest functions is obtained with the TEST push-button.

Basic menu display

Through the above display the basic function to

be checked or altered is selected. The functionsare presented in plain text without setting values.

The upwards pointed arrow is used for scrollingthrough the menu. The currently selected func-tion is shown in light on a black background. Ifthe basic menu shows a channel-related func-tion the following channel may be reached withthe semicircular arrow. Then, with the MENUpush-button the desired submenu display isreached.

Submenu display In this display all the setting values associatedwith the basic function are shown. Even in thisdisplay the menu may be scrolled through usingthe arrow push-buttons. The selected parameteris shown in light characters against a dark bot-tom. If the selected parameter value is to bealtered the setting display is called up using theSET push-button.

39

Setting display

In the setting display either the selectable valuesof a particular setting or the previous settingvalue if freely selectable, are shown. The se-lected value is flashing and shown in light char-acters on a dark background.

The selectable values are selected with the up-wards and downwards pointed arrows. The valuepointed out at the moment the display is aban-doned using the RET push-button is stored inthe memory.

At an adjustable setting the first digit flashes.This digit may be altered by stepping throughthe selectable set of characters using the upwardsand downwards pointed arrows. The followingdigit starts flashing when the rightward arrow ispushed and again the desired character may beselected. In this way the desired setting valuemay be obtained in the display. When thedisplay is abandoned using the RET push-but-ton the selected value is stored in the memory.

Programming viathe serial bus

The annunciator unit may also be configuredand set with instructions given via the serial portusing the codes defined later on in this productdocument. The programming routines are thesame as for the other SACO units and is easily

carried out using e.g. an SMS program. When ahigher level connection is used for the program-ming, additional information is to be found inthe SPA bus protocol description, i.e. the docu-ment no. 34 SPACOM 2EN1.

Operation The analogue annunciator unit is easy to use.The user simply pushes the front panel push-buttons to perform resetting functions or toread measured values. However, for shiftingdisplays and for programming the cover is to beopened to provide access to the front panelpush-buttons. The functions corresponding tothe adjacent push-buttons are shown in thematrix display.

The state of operation of the annunciator unit isindicated with two LED indicators in the upperleft corner of the front panel. Under normaloperation conditions the ON indicator shouldbe illuminated indicating that the auxiliary sup-ply of the unit has been switched on. If theFAULT indicator is illuminated an internalfault has been detected by the integrated self-supervision system.

FAULT

ON

SILENCEACKRESETTESTCONTRAST

State-of-operation indicators

Digital display

Legend field with LEDs foralarm and channel indication

Matrix display

Acknowledge/reset and channelselection push-button

Resetting sequence indicators

Operation push-buttons

Front view of the annunciator unit.

40

Resetting of set-point transition

On transition of a set-point value the indicatorof the concerned alarm channel is activatedaccording to the selected annunciator sequenceand the digital display shows the channel numberof the first-out alarm succeeding the last reset-ting. The group realarm output relays configuredto the particular set-point value transition arealso operated. Further, the resetting sequenceindicators perform according to the selectedannunciator sequence pattern. The unit incor-porates the following resetting functions:

SILENCE = resetting of audible alarmACKNOWLEDGE = alarm acknowledgeRESET = channel reset

The resetting function being performed whenthe reset push-button is pressed is the one cur-rently being indicated by the adjacent LEDs.Separate inputs are available for the variousacknowledge/resetting functions when they areto be performed by remote control.

Indication of first-out alarms andtransducer faults

The channel number of the first-out alarmsucceeding a resetting is shown in the digitaldisplay and it is maintained in the display untilbeing reset. Meanwhile the measurement valuedisplay is interrupted and it reappears when the

resetting is performed. An earth-fault indica-tion, however, is maintained until the earth-fault is eliminated. The first-out alarm is dis-played in the following form.

Type of set-point transition

= HI trip or rise time set-point

= HI alarm or positive deviation set-point

= LO alarm or negative deviation set-point

= LO trip or fall time set-point

= Transducer fault

= Earth-fault

Channel number:

= Annunciator channels

= Average value channel

Function testing The annunciator unit may be commanded intoa function testing mode where the indicators areilluminated in a certain sequence pattern. Afteropening the front cover the testing mode isentered by first pressing the SET and then theTEST push-button of the basic display. Thefunction test also includes the microprocessor.

After the function test the desired matrix displayfunction is re-selected.

Normally the transducer circuits are continu-ously supervised by the annunciator unit. Thefunction of the output relays are, however, to beverified by primary testing.

41

Display ofmeasuredvalues andevent registercontents

Measured values

The measured values are displayed on the digitaldisplay in scaled quantities on a per channelbasis. The channels are called up in a sequenceone by one with the push-button on the frontcover. A yellow LED indicator in the legendfield of the channels indicates which channel isup for display. If the average value function hasbeen taken in use the average value will be

presented after channel 16. Then, in stead of thechannel number the letters AV will be displayedon the matrix display.

The measurement value display function maybe used independently of the selected mode ofoperation of the matrix display.

Limit values andmeasured quantities

Simultaneously with the measured value beingdisplayed on the digital display, the limit values,the measured quantity and the channel numberare being presented on the first line of the matrixdisplay. If several limit values have been set, thedifferent values are shown successively with

three seconds intervals. The TRIP set-points aremarked with two arrow heads and the ALARMset-points with one. The arrow heads pointupwards for HI set-points and downwards forLO set-points.

Measurement value presentation.

Further the matrix display may be given thefollowing modes of operation:– bar graph mode survey display of all the 16

channels

– curve display mode with selectable time axis– event register display mode with the latest

four events on the screen

Selection ofdisplay mode

The matrix display modes are selected by meansof the push-buttons on the front panel, after thatthe front panel cover has been opened. If thebasic image with the date and time marks areshown on the display, the bar graph mode maybe obtained simply by pressing the bar graph

push-button, the curve mode by pressing thecurve mode push-button and the event registerdisplay mode by pressing the EVENT push-button. When a new display mode is to beselected the basic image is first called up usingthe left-most RET push-button.

42

Bar graph displaymode

The measured values of all the channels may bepresented in one image. The measured valuesare displayed in the form of bars with a 0…100% scale of the display range, when the measuredvalue is displayed in the curve mode. The stand-ard programming equals the measurement rangefor the concerned transducer. However, thedisplay range may be freely selected using theCURVE TRACE parameter. The set-points ofthe various channels are marked with upwardsdirected arrow heads for the HI set-points anddownward arrow heads for the LO set-points.The display provides a survey of the value of allthe channels in relation to the set limit values. Ifthe value of a channel lies close to a set-point the

concerned channel may be studied more closelyby calling up the channel on the digital display.

Bar graph display mode.

Curve display mode The measured values of the channels may bepresented as a curve in a system of co-ordinateswith a selectable horizontal time axis. The chan-nel to be studied is selected using the right-mostpush-button which is used for alarm resettingtoo.

The measured values are presented as scaledvalues of the selected measured quantity. Theend values of the measurement value range areshown in the left-most upper and lower cornersof the screen. The scale range for the curvedisplay mode may be selected from the basicmenu using the CURVE POINTS parameter.In the submenu HI POINT stands for the upperend value and LO POINT for the lower endvalue.

The default programming on delivery equals themeasurement range, but the requested displayrange may be set by the operator. For each pointon the time axis the maximum and minimumvalue for the measurement period, which thepoint represents, is given. The time axis may begiven the following values:

– one point per second, which gives a fulldisplay time period of 2 minutes

– one point per ten seconds, which gives a fulldisplay time period of 20 minutes

– one point per minute, which gives a fulldisplay time period of 2 hours

– one point per ten minutes, which gives a fulldisplay time period of 20 hours

– one point per hour, which gives a full displayperiod of 5 days

Curve display.

By keying one of the push-buttons the push-button mnemonics are displayed. The time axisis selected using the TIME push-button of thedisplay. By stepping through the choice of timevalues the desired time axis is selected as meas-uring sample/time. The last value selected isstored and presented, when the curve display isselected next. The measured values associatedwith all the time axes are stored. This featureenables the time axis to be changed wheneverrequested and the curve to be studied over ashorter or longer period of time. Using theMEMO push-button one stored measurementvalue curve per channel may be presented. Thepush-button mnemonics are erased from thedisplay with the RET push-button or automati-cally after time-out.

Push-button mnemonics display.

43

Stored measurementvalue curve

In addition to the continuously registered meas-urement value curve, a stored curve is availablefor each channel. The stored curve contains thelatest set-point value transition and it is storedwith the latest selected time axis. Of the storedcurve 75 % lies before the transition point and25 % after the point.

The stored measurement value curve is called upwith the MEMO push-button.

The first line of the display shows the timemarking of the set-point value transition usingthe following format:

Stored measurement value curve.

Local event sequenceregister

The latest thirty set-point value transitions andresettings including time markings comprisingyear, month, day, hour, minute and second arestored in chronological order in the register.The register is of the FIFO type which means,that when new events are received old events aredeleted.

Access to the register may be obtained by open-ing the front cover and pressing the EVENTpush-button of the basic display. The latest fourevents are then presented including the timemarking in hours, minutes and seconds. Bypressing the DATE push-button the time pre-sentation is altered to year, month and day. Thelatest (nearest) event is on top of the stack andmarked with number 30. By keying the arrowhead push-button one can go back in the regis-ter. The display moves automatically to its start-ing point, with the latest event on top if a newevent is received during the time the register isbeing read.

The event register presentation is finished bypressing the RET push-button.

The event sequence register is provided withbattery back-up and it maintains it contentsduring an auxiliary supply interruption.

Event sequence presentation.

44

Event No:30 = Latest event 0 = Oldest event

Event symbol:= HI trip or rise time set-point= HI alarm or positive deviation set-point= LO alarm or negative deviation set-poin= LO trip or fall time set-point= Transduser fault= Earth-fault

ER = 48 V undervoltage EV = Input oscillation monitor

= Reset (no symbol) - = Acknowledge

Time marking:Hour. minute: secondorYear-month-day

Channel number:C1...C16 = Annunciator channelsC0 = Average value channelBlank at reset or earth-fault

Key to event sequence register reading.

Display of averagevalue

The mean value, if calculated, is presented onthe digital display as the final value after all thechannel values. At the same time the HI set-point value and the blocking set-point valuealternate in the matrix display. In stead of the

channel number the letters AV are shown in thedigital display.

The mean value may also be presented in thecurve display mode, if desired.

45

List ofparameters

By means of the push-buttons and the displayson the front panel of the annunciator unit or viathe serial port of the unit, access to all the input/output values, setting values, variables and reg-istered values is obtained.

The parameter names used in the man-machinecommunication via the front panel are in plaintext while the parameter names are coded witha letter and a number when communicationgoes via the serial port. The letter codes stand forthe following parameter types:

I = input valueO = output valueS = setting valueV = variable

The parameters may carry module-related in-formation or channel-specific information. Themodule-related information is addressed to animaginary channel number 0 (zero) of the an-nunciator unit. The channel specific informa-tion is addressed to the desired channel, i.e. oneof the channels from 1 to 16.

Type of information Displayed memo Bus code Value

Module related information

Status of the interlocking — I1…I4 0 = not activatedlines 1 = activated

Calculated mean value AV I9 0.000…+/–9999

Output relay states — O1…O6 0 = not activated1 = activated

Realarm output relay REFL.RELAY MODE S1…S6 0 = transition followerfunction 1…6 1 = alarm memory follow

2 = pulse shaping3 = 0+2

Realarm pulse length S23 0…255 = pulse lengthin seconds

Alarm sequence type ALARM.SEQUENCE S24 0 = ISA A1 = ISA A-12 = ISA M-13 = ISA R-14 = DIN 19235

Determination of reporting ACT.ALARM POLL S25 0 = respondsof active alarms 1 = no respond(concerns the co-operationwith SACO 100M)

Average value HI trip AV.TRIP POINT S26 0.000…+/–9999set-point SET POINT

Starting delay of average AV.TRIP POINT S32 0…255 svalue trip RESP.TIME

Resetting delay of average AV.TRIP POINT S33 0…255 svalue trip RESP.TIME

Grouping of reflash A AV.TRIP POINT S28 0…6from average value trip RFL A TO RLY

Grouping of reflash B AV. TRIP POINT S29 0…6from average value trip RFL B TO RLY

Average value blocking AV.BLOCK POINT S27 0.000…+/-9999limit value SET POINT

46


Starting delay of the AV.BLOCK POINT S34 0…255 saverage value blocking RESP.TIME

Resetting delay of the AV.BLOCK POINT S35 0…255 saverage value blocking

Grouping of reflash A AV.BLOCK POINT S30 0…6from average value blocking RFL A TO RLY

Grouping of reflash B AV.BLOCK POINT S31 0…6from average value blocking RFL B TO RLY

Selection of external EXT.REF.CHANNEL S36 0 = no channelreference signal channel 1…16 = one of the channels

Frequency of the ac supply MAINS FREQUENCY S37 0 = 50 Hz1 = 60 Hz

Synchronizing — T 00.000…59.999 = timein seconds

Time setting TIME SETTING T year, month, day,hour, min, second

Local/Remote selection — V1 1 = local/remote2 = local state3 = remote state

Resetting of audible alarm — V2 1 = resetting

Acknowledge of alarm — V3 1 = acknowledge

Testing — V4 1 = testing active

Resetting of alarm channel — V100 1 = resetting

Contents of overflow — V51 0000…FFFFregister in hexadecimal Channel 1 = LSBform (least significant bit)

Channel 16 = MSB(most significant bit)

Setting to zero of overflow — V51 0 = setting to zeromatrix register

HI trip set-point activation — V52 0000…FFFFin hexadecimal form Channel 1 = LSB

(least significant bit)Channel 16 = MSB(most significant bit)

HI alarm set-point — V53 0000…FFFFactivation in hexadecimal Channel 1 = LSBform (least significant bit)


47


LO alarm set-point — V54 0000…FFFFactivation in hexadecimal Channel 1 = LSBform (least significant bit)


LO trip set-point — V55 0000…FFFFactivation in hexadecimal Channel 1 = LSBform (least significant bit)


HI transducer out of range — V56 0000…FFFFactivation in hexadecimal Channel 1 = LSBform (least significant bit)


LO transducer out of range — V57 0000…FFFFactivation in hexadecimal Channel 1 = LSBform (least significant bit)


Reading parameters from — V151 1 = reading and storingRAM to EEPROM memory

Event reporting mask — V155 0000…FFFFin hexadecimal form E1 = LSB

(least significant bit)E16 = MSB(most significant bit)

The state of the remote — V156 0000…01FFackn./reset inputs LSB = 48 Vin hexadecimal form LSB+1 = synchr.

LSB+2 = remoteLSB+3 = localLSB+4 = testLSB+5 = resetLSB+6 = ackn.LSB+7 = silenceLSB+8 = earth-fault

Annunciator unit MODULE ADD.CODE V200 000…899address number

Data transfer rate DATA TRANS.RATE V201 0 = 9600 Bd1 = 9600 Bd flash synchr. transmitter2 = 9600 Bd3 = 4800 Bd4 = 2400 Bd5 = 1200 Bd6 = 300 Bd

48


Microprocessor program — V205 XXX.X = program versionversion

Status of the unit — C 0 = normal status/resetting1 = CPU reset has occurred2 = event register overflow3 =1+2

Type designation of the — F SACO 16A3annunciator unit

Reading of event — L Time, channel numbersequence register and event code

Repeated reading of — B Time, channel numberevent sequence register and event code

Reading of active alarms — A Channel number andevent code

Channel-specific information

Scaled measurement — I1 0.000…+/-9999value of channel or 0 = open contactcontact status 1 = closed contact

Channel measurement — I2 0000…1023value in binary form

HI -point value HI ALARM POINT S1 0.000…+/-9999SETPOINT:

HI trip set-point value HI TIRP POINT S2 0.000…+/-9999SETPOINT:

LO alarm set-point value LO ALARM POINT S3 0.000…+/-9999SETPOINT:

LO trip set-point value LO TRIP POINT S4 0.000…+/-9999SETPOINT:

Starting delay of the HI ALARM POINT S5 0…255 sHI alarm set-point RESP.TIME

Starting delay of the HI TRIP POINT S6 0…255 sHI trip set-point and RESP.TIMEof the rise time alarm

Starting delay of the LO ALARM POINT S7 0…255 sLO alarm set-point RESP.TIME

Starting delay of the LO TRIP POINT S8 0…255 sLO trip set-point and RESP.TIMEof the fall time alarm

49


Resetting delay of the HI ALARM POINT S9 0…255 sHI alarm set-point RESET TIME

Resetting delay of the HI TRIP POINT S10 0…255 sHI trip set-point and RESET TIMEof the rise time alarm

Resetting delay of the LO ALARM POINT S11 0…255 sLO alarm set-point RESET TIME

Resetting delay of the LO TRIP POINT S12 0…255 sLO trip set-point and RESET TIMEof the fall time alarm

Grouping of reflash A HI ALARM POINT S13 0…6from HI alarm set-point RFL A TO RLY

Grouping of the reflash B HI ALARM POINT S14 0…6from HI alarm set-point RFL B TO RLY

Grouping of reflash A HI TRIP POINT S15 0…6from the HI trip and RFL A TO RLYrise time set-point

Grouping of reflash B HI TRIP POINT S16 0…6from the HI trip and RFL B TO RLYrise time set-point

Grouping of reflash A LO ALARM POINT S17 0…6from LO alarm set-point RFL A TO RLY

Grouping of reflash B LO ALARM POINT S18 0…6from LO alarm set-point

Grouping of reflash A LO TRIP POINT S19 0…6from LO trip and RFL A TO RLYfall time set-point

Grouping of reflash B LO TRIP POINT S20 0…6from LO trip and RFL B TO RLYfall time set-point

Rise time set-point RISE RATE HIGH S21 0 = disconnectedSET POINT 1…100 %/s

Fall time set-point FALL RATE HIGH S22 0 = disconnectedSET POINT 1…100 %/s

Grouping of channel to REF.VALUE DEVS S23 0 = not includedaverage value system INCLUDED? 1 = included

Average value deviation REF.VALUE DEVS S24 0.000…+/-9999set-point upwards at 83% +DEV 83 %:of the measurement range

Average value deviation REF.VALUE DEVS S25 0.000…+/-9999set-point upwards at 33% +DEV 33 %:of the measurement range

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Average value deviation REF.VALUE DEVS S26 0.000…+/-9999set-point downwards at –DEV 83 %:83% of the measurementrange

Average value deviation REF.VALUE DEVS S27 0.000…+/-9999set-point downwards at –DEV 33 %:33% of the measurementrange

The delays and the groupingsof the deviation alarms arethe same as for the HI alarmset-point

Blocking function 1, INTERLOCKINGS S28 0 = blocking outtype 1:FUNCT. 1 = reflash A blocked

2 = whole channel blocked

Blocking function 1, INTERLOCKINGS S29 0 = not groupedgrouping 1:GROUP 1…4 = grouped

Blocking function 2, INTERLOCKINGS S30 0 = blocking outtype 2:FUNCT. 1 = reflash A blocked

2 = whole channel blocked

Blocking function 1, INTERLOCKINGS S31 0 = not groupedgrouping 2:GROUP 1…4 = grouped

Registration of measure- DELTA VALUE S32 0.000…-/-9999ment value deviation RECORD, AT

Scaling, max.value SCALING S33 0.000…+/-9999100 %

Scaling, min.value SCALING S34 0.000…+/-99990 %

Scaling, 10 % SCALING S35 0.000…+/-999910 %







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Type of scaling SCALING S44 0 = linearLINEAR/NONLINEAR 1 = non-linear

Signal filtering FILTER S45 0 = 300 ms1 = 1 s2 = 5 s

Deadband DEADBAND S46 0…100 per mille

Type of transducer INP.SIGN.SPEC. S47 0 = contact input1 = not specified2 = not specified3 = 0…5 mA4 = 1…5 mA5 = 0…20 mA6 = 4…20 mA7 = 0…1 V8 = 0…5 V9 = 1…5 V10 = 0…10 V11 = 2…10 V12 = Pt 100, –20…230°C13 = Pt 100, –20…600°C14 = Pt 250, –20…230°C15 = Pt 250, –20…600°C16 = Pt 1000, –20…230°C17 = Pt 1000, –20…600°C18 = adjustable Pt

–20…600°C19 = Ni 100, –13…130°C20 = Ni 100, –13…250°C21 = Ni 120, –45…250°C22 = Ni 250, –13…130°C23 = Ni 250, –13…250°C24 = Ni 1000, –13…130°C25 = Ni 1000, –13…250°C26 = adjustable Ni –13…250°C27 = 0…200 Ω28 = 0…500 Ω29 = 0…2000 Ω30 = 0…1000 Ω31 = 0…2500 Ω32 = 0…10 kΩ33 = adjustable potentiometric input (0…130 Ω)…34 = adjustable potentiometric input (0…640 Ω)…35 = not specified

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Channel-specified IND.SEQUENCE S48 0 = normal alarm sequenceindication 1 = normal alarm sequence

with audible ringback2 = visual indicator function without audible alarm

Measurement quantity MEASURED QTY S49 XXXXX = five freelyselectable characters

Channel legend Channel text S50 XXXXXXXXXX = tenfreely selectable characters

Upper limit value of INP.SUPERVISION S51 0.000…+/-9999the transducer fault HI LIMITsupervision

Lower limit value of INP.SUPERVISION S52 0.000…+/-9999the transducer fault LO LIMITsupervision

Input contact oscillation INP.OSC.MONITOR S53 1…255 events/minsupervision 0 = disconnected

Event codes Module related codes (channel (0)

HI set-point value of the average value, activation E1HI set-point value of the average value, resetting E2Blocking set-point for average value, activation E3Blocking set-point for average value, resetting E4Parameter memory initialization started E7Parameter memory initialization executed E8Internal annunciator unit fault E10Event register overflow E13Earth-fault, activation E22Earth-fault, resetting E23

Channel-specific codes (channels 1.16)

HI alarm set-point, starting E1HI alarm set-point, resetting E2HI trip set-point, starting E3HI trip set-point, resetting E4LO alarm set-point, starting E5LO alarm set-point, resetting E6LO trip set-point, starting E7LO trip set-point, resetting E8

Measurement deviation, registration upwards E15Measurement deviation, registration downwards E16

Out of measuring range upwards, activation E20Out of measuring range upwards, resetting E24Out of measuring range downwards, activation E21Out of measuring range downwards, resetting E25Tripping of input contact oscillation supervision E23

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Technical data Annunciator channelsNumber of channels per annunciator unit 16

Selectable transducer signal types 0…5 mA, 1…5 mA, 0…20 mA, 4…20 mA0…1 V, 0…5 V, 1…5 V, 0…10 V, 2…10 V,Pt 100, Pt 250, Pt 1000Ni 100, Ni 120, Ni 250, Ni 1000One selectable Pt or Ni signal within therange 65…1000 Ω, potentiometric signalwithin the range 0…200 Ω, 0…500 Ω,0…1 kΩ, 0…2 kΩ, 0…2.5 kΩ, 0…10 kΩ,contact function

Scaling types Linear or non-linear

Signal filtering, selectable time bases 0.3 s, 1 s or 5 sfor 0…90 % step response

Set-point values per channel Two HI and two LO set-points or one HI and oneLO plus one rise time and one fall time set-point

Channel starting delay at set-point 0…255 svalue transition

Channel resetting delay at set-point 0…255 svalue resetting

Deadband setting range, 0…100 per milleon a per channel basis

Measuring accuracy 0.5 % of scale range

Transducer supply 24 V dc ±10 %, max. 320 mA

Transducer supervision, measuring range Fully selectable upper and lower transducer signallimit values

Transducer circuit earth-fault supervision Integrated with a sensitivity of 5…10 kΩ

Transducer oscillation supervision Selectable 1…255 events/s.Can even be set out of function

Reference channel function Any channel may be assigned reference channel.The reference value may also be the average valueof the measurement value of channels 2…16

Reference value deviation set-point values Two selectable set-point values, one upper andone lower, separately given at 33 % and 83 % ofthe measuring range. Between these given set-pointvalues the set-point values are interpolated andoutside the given set-point values the set-pointvalues are extrapolated from the given set-pointvalues

Registration of measurement value Selectable setting value of the size of alterationalteration which will be stored as an event in the event

sequence register

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Realarm functionPermanent groupable realarm output relays Six relays with one NO contact per relay.

The contacts may be given NC function by meansof jumpers

Audible alarm output One relay with one NO contact(NC contact by jumper)

Self-supervision system output One relay with one NO contact(NC by jumper)

Relay contact rated current/max. breaking 3A/250 V ac or dccurrent

External control inputsAudible alarm reset NO circuit

Alarm acknowledge NO circuit

Alarm channel reset NO circuit

Remote testing NO circuit

Control of unit into LOCAL mode NO circuit

Control of unit into REMOTE mode NO circuit

Clock synchronization contact loop supply NO circuit, pulse length> 100 ms, 48 V dc, 4 mA

Serial communicationData bus type SPA bus, serial

(LON bus by LON/SPA Gateway, SPA-ZC 100)

Selectable connections Glass or plastic fibre, RS 485, RS 232.Bus connection modules on request.

Data transfer rate, selectable values 9600 Bd, 4800 Bd, 2400 Bd, 1200 Bd or 300 Bd

Communication protocol SPA protocol, an ASCII protocol open for all users

Auxiliary power supplyStandard supply unit input voltage range 80…265 V ac/dc

Optional supply unit input voltage range, 18…80 V dcnot intended for use with double supply

Power demand from auxiliary source, ~20 W/~30 Wmax./min. value

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Test voltagesChannel and control inputs versusannunciator case, supply inputs andrelay outputs

Dielectric test voltage as per IEC 255-5 500 V, 50 Hz, 1 minand SS 436 15 03

Impulse test voltage as per IEC 255-5 1 kV, 1.2/50 µs, 0.5 Jand SS 436 15 03

High frequency test voltage as per 1 kV, 1 MHzIEC 255-5 and SS 436 15 03

Spark interference test voltage 2…4 kVas per SS 436 15 03

Supply inputs versus case, relay outputsversus case, supply inputs and relayoutputs between themselves

Dielectric test voltage as per 2 kV, 50 Hz, 1 minIEC 255-5 and SS 436 15 03

Impulse test voltage as per 5 kV, 1.2/50 µs, 0.5 JIEC 255-5 and SS 436 15 03

High frequency test voltage as per 2.5 kV, 1 MHzIEC 255-5 and SS 436 15 03

Spark interference test voltage as per 4…8 kVSS 436 15 03

Environmental conditionsAmbient service temperature range –10°C…+55°C– including matrix display –10°C…+45°C

Ambient transport and storage –20°C…+55°Ctemperature range

Long term heat/damp as per <95 % at 40°C for 56 days/yearIEC 68-2-3

Degree of protection by enclosure, IP 54when panel mounted

Mass of the annunciator unit ~4.5 kg(~10 lb)

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Testing The annunciator unit is provided with a sophis-ticated, built-in self-supervision system whichmonitors the internal voltages of the unit andsupervises the function of the microprocessorand the logic circuits. Further, the annunciatormay be programmed to provide earth-fault pro-tection, short-circuit protection and conductordiscontinuity protection of the transducer cir-cuits.

Upon detection of a permanent internal fault,the output contact of the self-supervision sys-tem closes and the FAULT indicator on thefront panel is illuminated.

A transducer fault is indicated with a letter F andthe channel number in the digital display. Anearth-fault is indicated with the letters EF. Theearth-fault can not be reset before the fault hasdisappeared. At a transducer fault the outputrelay contact of the self-supervision system closesbut the FAULT-indicator remains off.

Starting from the basic display the annunciatorunit may be tested by first pushing the SETpush-button and then the TEST push-button.The test program then goes through all the unitsindicators. After the test sequence the desireddisplay is selected again.

Maintenance andrepair

When the annunciator unit is used under theconditions specified in the section "Technicaldata", no regular maintenance is needed. Theannunciator unit holds no parts or componentsubject to wear and tear under normal operatingconditions.

If the environmental conditions at the annun-ciator operating site differ from those specified,as to ambient temperature, humidity or if theatmosphere around the annunciator holdschemically active gases or dust, the annunciatorunit ought to be visually inspected as a routinemeasure taken as part of the condition monitor-ing of the installation. Especially the followingthings must be observed.

– mechanical damage on the case, the fasteningdetails, the front cover and its gasket, the plug-in modules and their connection sockets

– signs of starting corrosion on the PC boards,component legs and cups, bolts and nuts orother metallic parts

– signs of accumulation of dust or dirt inside thecover, on PC boards or in the case. The reasonmay be a faulty gasket in the front cover.

In most cases an operational malfunction maybe rectified by changing a plug-in module, seespares below. When the microprocessor moduleSWPM 4A1 is changed to a new one, theprogram memory of the old module may bemoved to the new one. In this way the newmodule needs not to be set and configured fromthe beginning. The parameter memory is mar-ked D6 and it is located in the lower left cornerof the plug-in module. When plugging in thememory circuit, check carefully that the circuitis inserted in the correct position. The slot inone end of the IC circuit end is to be turned inthe same direction as on the other ICs of the PCboard. In this way possible damage of the memorycircuit can be avoided.

If the circuit malfunction proves unrepairable,it is recommended that the supplier or manufac-turer are contacted for further information onservice and repair measures to be taken.

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Accessories andspare parts

Microprocessor module SWPM 4A1Analogue input module SWAM 16A1Digital input/output module SWOM 8A1Display module SWDM 4A1Connection module SWCM 13A1(the whole rear module)Connection module SWCM 10A1(permanent transducer connection)Connection module SWCM 10A2(detachable transducer connection)

Auxiliary supply module–input voltage range 80…265 V ac/dc SPGU 240A1–input voltage range 18…80 V dc SPGU 48B2

Spare legend text sheet, three text foils SYKU 639

Raising frame, 40 mm SPA-ZX 301Raising frame, 80 mm SPA-ZX 302Raising frame, 120 mm SPA-ZX 303

Bus connection module,plastic fibre out, plastic fibre in SPA-ZC21 BB/SBus connection module,glass fibre out, glass fibre in SPA-ZC21 MM/SBus connection module,plastic fibre out, glass fibre in SPA-ZC21 BM/SBus connection module,glass fibre out, plastic fibre in SPA-ZC21 MB/S

Bus connection module,plastic fibre out, plastic fibre in SPA-ZC17 BB/SBus connection module,glass fibre out, glass fibre in SPA-ZC17 MM/SBus connection module,plastic fibre out, glass fibre in SPA-ZC17 BM/SBus connection module,glass fibre out, plastic fibre in SPA-ZC17 MB/S

Bus connection module, RS 485 SPA-ZC3

Bus connection module, RS 232/RS485 SPA-ZC4

1MR

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ABB OySubstation AutomationP.O.Box 699FIN-65101 VAASAFinlandTel. +358 (0)10 22 11Fax.+358 (0)10 22 41094www.abb.com/substationautomation

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