mx3ipg2a en

MX3IPG2AMultiple-Function Protection for Generator

(R< - Ucc< - Ucc>)

TECHNICAL MANUAL MDE/C133 2561 001

ABCD

blank page

pag. 3

MDE/C133 2561 001MX3IPG2A

CONTENTS1. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. GENERAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 Selecting rated values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1 Underresistance protection (rotor ground) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.2 Overcurrent protection (input I) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.3 Undervoltage protection (diagnostics - input U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.4 Overvoltage protection (diagnostics - input U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.5 Direct undervoltage protection (input Ucc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.6 Direct overvoltage protection (input Ucc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.7 Main and spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4. ADDITIONAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.1 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.2 Output circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.3 LED signalling circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.4 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.5 Additional timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.6 Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.7 Event logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.8 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.9 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.10 Alphanumeric user identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.11 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.12 LCD settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.13 Inhibiting operation - Deconfiguration via network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.14 Serial communication on LONWORKS (TM) bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.15 RS485 serial communication and MODBUS protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124.16 Fault recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124.17 Checking tripping circuits for continuity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5. LOCAL INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6. LCD MENU STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146.1 MAIN READING MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.1.1 Change dialogue language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146.1.2 Change date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.3 Display settings in use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.4 Display main settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.5 Viewing spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1.6 Display current and stored measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1.7 Viewing counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1.8 Viewing events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1.9 Display output relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.1.10 Viewing digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.1.11 Display LED's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.1.12 Viewing relay data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.1.13 Diagnostic display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.2 MAIN SETTING CHANGE MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196.2.1 Select current settings group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196.2.2 Change main settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206.2.3 Change spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206.2.4 Set output relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206.2.5 Set digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.2.6 LED Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.2.7 Set alphanumeric code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.2.8 LCD back-lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.3 TEST MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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7. APPLICATION AND USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8. INSTALLATION - TRANSPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238.1 ESD Electrostatic charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238.2 Acceptance - storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238.3 Assembling and connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9. SETTING THE UNIT AT WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249.1 Safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249.2 Checking nameplate ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249.3 Final test with gauging of the attachment X2/IPG2A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

APPENDIX A - Network data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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100

1000

10000

0 1 2 3 4 5

Capacità [microf]

Sog

lia [O

hm]

1. TECHNICAL DATA

This device belongs to the Modulex 3 line and digitally proc-esses the currents and voltages injected into the rotor windingof synchronous machines, through the use of the attachmentX2/IPG2A, to provide a rotor ground protection besides anumber of additional functions, among which are the directover- and undervoltage monitoring (Vaux control).The user interface is available locally through a display unit,and remotely, through a LONWORKS (TM) field bus with a controland monitoring system.It is furthermore capable of communicating with a PersonalComputer through a connector located on the relay front andan interface programme. This feature makes it easier andsafer to programme the setting parameters and configure andread the set values, measurements and logged events; theprogramming can also be taken from previously created files.

Protective functions:

minimum resistance with two thresholdswith definite time operating characteristic

injected overcurrent with one thresholdwith definite time operating characteristic

injected undervoltage with fixed thresholdwith fixed time operating characteristic

injected overvoltage with fixed thresholdswith fixed time operating characteristic

direct undervoltage with two thresholdswith definite time operating characteristic

direct overvoltage with two thresholdswith definite time operating characteristic

possibility of two groups of settings, namely main andspare

Measurement functions:

resistance values stated in Ω injected current value stated in A injected voltage value stated in V direct voltage values stated in Un injected overcurrent value stated in A logging of the latest 8 events with storage of tripped

thresholds values, date, time and injected current anddirect voltage values as measured when the fault showedup

fault recorder: recording, for 2.5 s in all, of the instant values(12 samples per period ) taken by the input quantities(Iinjected,Vinjected,Vdirect), as well as of the 19 logicalstates among which digital inputs and additional timers arefound

RCE logging: recording of the latest 32 changes of state(with related date and time); only available through PC or vianetwork. .

Other functions:

selection of the setting range of the direct voltage thresh-olds by means of internal jumpers

selection of the rated frequency between 50Hz and 60Hz

selection of dialogue language (Italian, English, Frenchand Spanish)

self-monitoring with detailed indication of fault and alarmtype through LED's and "normally energized" output relay(X6)

possibility of serial communication both with a local PC orvia a LONWORKS (TM) field bus

three auxiliary timers available free for allocation to digitalinputs

possibility of assigning one or more device functions toeach output relay and LED

possibility of separately setting all output relays as "allnormally energized" or "all normally normally de-energized"

possibility of selecting, for each output relay and LED, themonostable or bistable (hand-reset) operating mode

possibility of assigning a minimum pulse width to eachoutput relay

opto-insulated digital inputs programmable for lockout,drive and reset functions, each input being enabled bynormal energizing or de-energizing. Optionally, they may beused to supervise the tripping circuit for continuity

a partial and a total counter per trip threshold

MINIMUM RESISTANCE PROTECTION (rotor ground)

Settings

first threshold R<: 200÷4000 Ω / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 sdefinite time trip delay t1: 0.05 ÷ 600 ssecond threshold R<<: 200÷4000 Ω / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 sdefinite time trip delay t2: 0.05 ÷ 600 sthreshold settings step: 1time setting step: 0.01threshold variation as a function of variation occurring between windingand mass:

Capacity [ µµµµµF]

Thr

esho

ld [

ΩΩΩΩ Ω]

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OVERCURRENT PROTECTIONmeasurement range: 0 ÷ 1.2 A

Settingsthreshold I~>: 0.01÷0.10 A / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 sdefinite time trip delay t3: 0.05 ÷ 600 sthreshold settings step: 0.001time setting step: 0.01

UNDER/OVERVOLTAGE PROTECTION (diagnostics)

undervoltage threshold : 28 Vtrip delay : 2 sovervoltage threshold : 52 Vtrip delay : 2 s

DIRECT UNDER/OVERVOLTAGE PROTECTION

rated voltage (jumper in S20) Un: 30 ÷ 300 Vrated voltage (jumper in S21) Un: 3 ÷ 30 Vrated voltage (jumper in S22) Un: 0.3 ÷ 3 Vrated voltage (jumper in S23) Un: 0.03 ÷ 0.3 Vfirst undervoltage threshold U-<: 0.5 ÷ 1.2 Un / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 strip delay t4: 0.02 ÷ 600.00 ssecond threshold di minima tensione U-<<: 0.5 ÷ 1.2 Un / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 strip delay t5: 0.02 ÷ 600.00 sfirst overvoltage threshold U->>: 0.5 ÷ 1.2 Un / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 strip delay t6: 0.02 ÷ 600.00 ssecond overvoltage threshold U->>: 0.5 ÷ 1.2 Un / OFFstarting signalling delay tstart: 0.00 ÷ 9.99 strip delay t7: 0.02 ÷ 600.00 ssettings step: 0.01

ADDITIONAL SETTINGSrated frequency fn: 50 or 60 Hzminimum pulse width of end relays timp: 0.02 ÷ 1 sadditional timer tX1: 0.02 ÷ 600 sadditional timer tX2: 0.02 ÷ 600 sadditional timer tX3: 0.02 ÷ 600 s

Auxiliary power supply

MX3IPG2A.11, .61 and .71 versionsUaux: 19 ÷ 100 VccUaux: 19 ÷ 72 Vca

MX3IPG2A.12, .62 and .72 versionsUaux: 64 ÷ 300 VccUaux: 64 ÷ 275 Vca

X2/IPG2A attachment Uaux: 10 ÷ 315 Vcafrequency for Uaux in c.a.: 47 ÷ 63 Hzburden (minimum/maximum) in d.c.: 5 W / 10 Wburden (minimum/maximum) in a.c.: 10VA / 20VAburden of X2/IPG2A attachment in c.a.: 5 VA

Output contact rating

rated current: 5 Abreaking power (110 Vcc; L/R= 40 ms; 105 operations): 0.3 Amake and carry for 0.5 s: 30 Amechanical durability: 106 operations

Digital inputs

MX3IPG2A.11, .61 and .71 versionsUaux IN DIG: 19 ÷ 100 Vcc

maximum series lead resistance: 8.8 kohmwith additional external resistor, rated 4.7 kohm 2 W 30 ÷ 150 Vccwith additional external resistor rated 18 kohm 7 W50 ÷ 300 VccMX3IPG2A.12, .62 and .72 versions

Uaux IN DIG: 64 ÷ 264 Vccmaximum series lead resistance: 48 kohmwith additional external resistor rated 6.8 kohm 1 W 75 ÷ 300 Vcc

Errors of measuring equipment

Resistance threshold

relative error: ≤ 3 % of set value (with min. value 20 Ohm)consistency : ≤ 1 % of set value

Current threshold

relative error: ≤ 3 % of set value + 0.005 Aconsistency: ≤ 1 % of set value + 0.005 A

Voltage thresholds

relative error : ≤ 2.5% + 1 Vconsistency : ≤ 1% + 1 V

Direct voltage thresholds

relative error (selector Un: S20): ≤ 3% (minimum 1 V) (selector Un: S21): ≤ 3% (minimum 100 mV) (selector Un: S22): ≤ 3% (minimum 10 mV) (selector Un: S23): ≤ 3% (minimum 1 mV)relative error : (selector Un: S20): ≤ 1% (minimum 1 V) (selector Un: S21): ≤ 1% (minimum 100 mV) (selector Un: S22): ≤ 1% (minimum 10 mV) (selector Un: S23): ≤ 1% (minimum 1 mV)Error variationas frequency varies within the range ± 5% fnand with ≤ 5% distortion factor

Current thresholdrelative error: ≤ 1 % of set value + 0.0025 A

Voltage threshold

relative error : ≤ 1% + 1 V

as temperature and Uaux vary within the operating range

Current threshold

relative error: ≤ 0.5% of set value + 0.001 A

Voltage thresholdrelative error : ≤ 0.5% + 1 V

Direct voltage threshold

relative error (selector Un: S20): ≤ 0.5% (minimum 1 V) (selector Un: S21): ≤ 0.5% (minimum 100 mV) (selector Un: S22): ≤ 0.5% (minimum 10 mV) (selector Un: S23): ≤ 0.5% (minimum 1 mV)

for asymmetric values

transient overreach: ≤ 5%

Time errorsrelative error on definite times: ≤ 3% or 20 msconsistency on definite times: ≤ 1% or 20 ms

Variation of time errors

as temperature and Uaux vary within the operating range

relative error on definite times: ≤ 0.5% or 10 ms

Other characteristics

reset ratio for maximum thresholds: > 0.95reset ratio for minimum thresholds: < 1.05reset time: ≤ 50 msovershoot: ≤ 30 ms

Operating ranges

service temperature: -10 °C ÷ +60 °Cstorage and transport temperature: -25 °C ÷ +80 °Crelative humidity: < 95% with no formation of condensatevibration: IEC255-21-1; class 2; 0.075mm 10-60Hz; 1g 60-500Hz

Weighttotal: 2.5 Kg

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Protection Classdevice: IP52upon request when flush-mounted in a panel: IP66terminal board with mounted cover: IP20

InsulationTo ground and between two independent circuits whatsoever:

2 kV, 50 Hz per minuteImpulse test: 5 kV 1.2/50 µs

Electromagnetic compatibility

89/336/CEE : EN50081-2 EN50082-2 DirectiveFor industrial environmentsUNIPEDE NORM(SPEC)13 "Automation and control apparatus for

generating station and substation"ENEL R_EMC_02 "Apparati di automazione e controllo per centrali e

stazioni elettriche".conditions of electromagnetic compatibility:IEC 1000-4-8 EN 61000-4-8 lev.5; 1000 A/mIEC 1000-4-10 EN 61000-4-10 lev.5; 100 A/mIEC 1000-4-3 ENV 50140 lev.3; 10 V/m77B(Sec)1 ENV 50204 lev.3; 10 V/mIEC 1000-4-2 EN 61000-4-2 lev.4; 8kV contact;15kV air-break77A/120/CD lev.4 / 3; 300V / 10-1-1-10 VIEC 1000-4-5 EN 61000-4-5 lev.4; 4kV 1.2/50 µsIEC 1000-4-12 EN 61000-4-12 lev.3; 2.5 kVIEC 1000-4-4 EN 61000-4-4 lev.4; 4 kV77B/144/DIS ENV 50141 lev.3; 10 V77A(Sec)99 lev.2; 10%IEC 1000-4-11 EN 61000-4-11 > 20 msIEC/CISPR 11 EN 55011 group 1 class A

Reference standardsCEI 95-1 EN 60255-6 IEC 255

Low voltage directive 73/23/CEE

2. GENERAL CHARACTERISTICS

The device features a mechanical casing that is 4U in height,and as wide as to allow up to 4 pieces to be accommodatedin a 19" rack, in addition to normal flush mounting.The casing is made of a hot-galvanized PVC-coated plateframe inside which the moving part that carries all the elec-tronic circuits and the local interface slides on guides. The pull-out action is facilitated by the presence of special "handles"which, when the device is "plugged in", are also used to lockthe two parts. The aluminium frame of the moving part rendersthe latter excellently rigid.The device-system interface terminal blocks are located ontop of the casing and, for each electrical connection, a screwclamp is available apt to receive up to 2 cable terminals, 4mm2

in size. Using a special accessory that is included in thesupply, the connection can also be made through Fastonmembers.Special error-fighting codes do not allow relays other thanthose compatible with the housing to be inserted.A cover lid classes the terminal block within the IP20 protectionclass.When the moving part is pulled out, the current inputs areautomatically short-circuited, whereas the voltage and auxil-iary circuits are disconnected.The device front bears two labels:one plate lists the factory configuration of the device, namelyauxiliary voltage, rated current and frequency;The other plate, always in accordance with the factory configu-ration, provides an explanation of LED's indications.Both labels are easily replaced with new ones, which can bearany information as required by the client.As far as the factory configuration relevant to output relays,LED's, digital inputs and relevant settings are concerned,please refer to tables A, B and C.

pag. 8


2.1 Selecting rated values

The selection of the rated current between 1 or 5 Ampères forphase protection is made by acting on a jumper that is locatedby one of the following points: S20, S21, S22, S23, which canbe reached once the relay has been pulled out (see fig. 1, 4a,4b, 4c, 4d).

I WARNINGDangerous voltages may remain in the device even when thelatter has been de-energized or pulled-out of its casing(capacitor's memory)

fig. 1

3. OPERATION

3.1 Underresistance protection (rotor ground)

The underresistance protection works by comparing the ratiobetween voltage and current injected into the attachment X2/IPG2A with the set thresholds (R<,R<<): when the calculatedresistance falls below a given threshold,causes the tstart andthe trip timers t1 t2 to trip. If the value remains below thethreshold, once the associated tstart delay is over, the delayedstart command is sent.If the tripping timers also reach the set overtime, the trippingcommand is sent; the partial and total counters related to thetripped threshold increase their counts and the event loggingsession starts.If a special digital input is enabled which has been set to lockone or more thresholds, the starting registers are held at zero,thus preventing operation as long as the input remains ena-bled.

Threshold R< has a definite time characteristic in the form:t = t1

3.2 Overcurrent protection (input I)

The device is equipped with an overcurrent threshold (injectedby attachment X2/IPG2A) associated to a tstart and a trip timer.The overcurrent threshold trip may be locked by feeding aspecial digital input purposely set to suit the purpose.

3.3 Undervoltage protection (diagnostics - input U)

The device is equipped with an undervoltage threshold (ap-plied to attachment X2/IPG2A) associated to a timer. The tripof the undervoltage threshold can be locked by feeding aspecial digital input purposely set to suit the purpose.

3.4 Overvoltage protection ( diagnostics - input U )

The device is equipped with an overvoltage threshold (injectedby the attachment X2/IPG2A) associated to a timer. The trip ofthe undervoltage threshold can be locked by feeding a specialdigital input purposely set to suit the purpose.

3.5 Direct undervoltage protection (input Ucc)

The device is equipped with a direct undervoltage thresholdassociated to a tstart and a trip timer. The direct undervoltagethreshold trip can be locked by feeding a special digital inputpurposely set to suit the purpose.

3.6 Direct overvoltage protection (input Ucc)

The device is equipped with a direct overvoltage thresholdassociated to a tstart and a trip timer. The direct overvoltagethreshold trip can be locked by feeding a special digital inputpurposely set to suit the purpose.

TOP

RELAYFRONT

pag. 9


3.7 Main and spare settings

The device can store two groups of settings, named 'main' and'spare' settings, which can be programmed through thekeyboard, a Personal Computer or a network.The current settings are indicated on the display unit with thetext 'SETTINGS IN USE'.The device, notwithstanding the selections made, can be"forced" to use the SPARE settings. Such forcing can beenabled from the network or through a continuous signal to besent to the digital input (IN DIG 1), previously set to implementthis function. This condition is signalled by the presence of thecharacters <!> next to the selected settings; when the signaldrops, the previously selected group of settings is enabledagain, whereas the characters <!> disappear (see paragraph6.1.3).

4. ADDITIONAL FUNCTIONS

4.1 Diagnostics

Diagnostic activities are envisaged which are automaticallycarried out upon powering on the device as well as from timeto time during the running, and which provide the followingactions:- signalling fault or failure conditions. This signal de-

energizes the diagnostic relay, turns off the green LED(indicating running system) and lights up the red LED(indicating system failure).

- system lock-out in the event of faults that might entail ill-timed operation (VITAL FAULTS).

- failure code display.The following failures are classed as NON-VITAL FAULTS:- output relay(s) (X1 - X5) failure- communication failure- internal clock failureThe following failures are classed as VITAL FAULTS:- feeder failure- EEPROM failure- internal or external RAM failure- Analogue/Digital converter failureIn the presence of vital faults, the device will automaticallydisplays the fault code; this condition can only be reset, if theequipment allows this condition to be reset, by enabling the"settings change' command.In the event of , upon starting up the equipment, an EEPROMfailure making it impossible to retrieve the information on theselected dialogue language, the device will continue workingusing Italian as the default dialogue language.The device includes the 'Watch Dog' function.The diagnostic activity is also aimed at signalling any conditionof "inhibited equipment"; this condition is displayed with adedicated code, the diagnostic relay is de-energized and thered LED (faulty device) lights up. This condition can only bereset by enabling the 'change settings' command.The diagnostic menu also indicates the date when last changeswere made to the equipment.

4.2 Output circuits

The output circuits are composed of six relays, each of themequipped with two contacts (see block diagram).The X6 relay, normally energized, is strictly assigned to thediagnostic function.Each of the five relays left, if duly programmed from thekeyboard, a Personal Computer or a network, can be:- set to perform one or more functions- preset for:

- monostable operation: immediate return to the quiescentposition when the cause that operated it is removed.- bistable operation (MEMOR): the tripping position is main-tained until a reset signal comes from the front push-button,the digital input or the serial connection.- a minimum duration of the signal or command (t_IMP).

The output relays, except for the diagnostic relay, can all besimultaneously set to "normally energized" (NORMAL.ON=ON)or "normally de-energized" (NORMAL.ON=OFF): this selectionis made by acting on the settings change function.

pag. 10


4.3 LED signalling circuits

The signalling circuits are made of twelve LED's (see fig. 5).Four LED's are rigorously assigned to previously establishedsignalling functions: - (Uaux) green LED ON in the presence of input voltage and

with correct feeder output voltage values - (RUN) green LED ON with fixed light in normal conditions

and blinking during setting changing and testing functions- (RUN) red LED ON with fixed light when the diagnostic

detects a fault or a condition of inhibition.- (Rx Tx) green LED ON with fixed light when the device is

correctly connected, blinking with the communicationboard not enabled or not properly set; OFF when thecommunication board is not present on the device.

Each of the eight LED's left, if duly programmed from thekeyboard, a Personal Computer or the network, can be:- set to perform one or more functions- preset for:

- monostable operation; it immediately goes off when thecause that made it go on is removed- bistable (MEMOR) operation; the LED remains ON until areset signal is sent from the front push-button, the digitalinput or the serial connection. Any failure of auxiliary voltageonly entails a momentary loss of the luminous signals,which come back again as soon as voltage is restored.

A pocket is provided close to the LED's, where LED describinglabels can be placed.

4.4 Digital Inputs

Each of the three optoisolated inputs can be associated withone or more protection functions by duly programming themthrough keyboard, Personal Computer or via network. Theinput voltage may happen not to match the auxiliary voltage ofthe device.The digital inputs can be programmed to be enabled by normalenergizing or normal de-energizing.

4.5 Additional timers

All the optoisolated inputs (IN DIG 1,IN DIG 2,IN DIG 3) can beprogrammed to be associated with additional timers (t_X1,t_X2, t_X3).When the programmed input is energized, the associatedadditional timer is started, and if the timer reaches the overtimestatus, the tripping signal is sent and maintained until the inputis reset.

4.6 Counters

Each tripping threshold is associated with a partial and totalcounter.The counters work within the 0-9999 range; if number 9999 isexceeded, the counter is automatically reset and the countrestarts from the beginning.All of the partial counters can be reset by acting through thekeyboard, a Personal Computer or via network.

4.7 Event logging

When a tripping event occurs, the following information isstored in the circulating memory:- first operated threshold- day, month, year, time, minute, second and millisecondidentifying the tripping moment.- values measured when the tripping occurred.The information concerning one trip is called event.The circulating memory allows the last 8 events to be stored,and when this number is exceeded, a new record replaces theolder: the last event is stored as EVENT 1.The stored events can be read from the front display unit or froma PC serially connected to the device.The device can also record the latest 32 changes of state (withrelated date and time) and make them available exclusivelythrough PC or via network.

4.8 Measurements

The device is in a position to display the effective presentvalues of resistance, expressed in Ohm, direct voltage, ex-pressed in Un, injected alternating voltage stated in V andinjected alternating current stated in A .The unit also displays the maximum value of injected alternat-ing current stated in A ever measured by the latest 'Resetmaximum values'

4.9 Test

Besides the normal diagnostic already dealt with, the devicealso offers, in the TEST mode, the possibility of testing theLED's, the display unit and the output relays.- The LED test turns on all the LED's, from L1 to L8, and the

display unit (LCD) for two seconds.Once the test is over, the LED's that were supposed to beON before the test remain ON and the display unit goes backto the previous information displayed. The test can also beperformed in any operating condition, without affecting theoperation in progress.

- the relay test allows the output relays X1 to X5 to besequentially selected and checked for correct operation. Inthis way, any external signalling or control circuit can betested, too.The tested relay remains energized for 150 to 200 ms.If starting or tripping commands are already present, thetest is not carried out and a dedicated message appears onthe display unit.The test on auxiliary relays does not affect counters, eventlogs and LED's.

4.10 Alphanumeric user identifier

The device can be identified in the plant by an alphanumericcode, which can be set by the user directly on the equipmentor from a PC. With a network-linked device, the alphanumericcode can only be modified by operating through the network.

pag. 11


4.11 Language

The device can display information in four languages: Italian,English, French and Spanish. The language can be selectedthrough the keyboard.

4.12 LCD settings

The display can be set for fixed (OFF) or timed (ON) back-lighting; in the last case, the display lights up for 300s any timea key is pressed .

4.13 Inhibiting operation - Deconfiguration via network

Inhibiting the device is required in operating plants, to avoidinefficiency on feeding a protection whose settings are un-known or need to be changed.The inhibition is performed by holding the settings changebutton pressed for about 2 s,while injecting the auxiliaryvoltage until the following message is displayed:

[ BLOC ][ ]

On releasing the push-button, the condition of inhibited deviceis signalled by a diagnostic message of P fault.The normal operating conditions can only be restored bymoving to the settings change function, which is enabled at allevents; a temporary loss of the auxiliary voltage supply doesnot affect the inhibited state of the device.If the device is also equipped with a field-bus board, by holdingthe settings change push-button further pressed for about 2s,in the BLOC state, the device will display:

[ NET RESET ? ][_ NO YES _]

if a confirmation is provided, the device can also be made loseits network configuration.The full procedure for inhibiting and de-configuring the devicevia network must be enacted any time you need to replace theunit.By resetting an inhibited and deconfigured unit, a K faultmessage is displayed and remains displayed until the unit isconfigured anew.Operation can only be reset by moving to the settings changefunction, which is enabled in any case.

fig. 2

RELAYFRONT

TOP SIDE

BOARDNOTENABLE

BOARDENABLE

A-A VIEW A-A VIEW

A-A VIEW

I CAUTIONHazardous voltages can remain in the device even whenthe latter has been de-energized or pulled out of its casing(condenser memory).

4.14 Serial communication on LONWORKS (TM) bus

The device, in the version including the special bus board, cancommunicate with a central monitoring and control system ata speed equalling 1.2 5 Mbaud. The connection to the field busis made through terminals: 43 and 45.The communication board, which can be also added later, isonly enabled if the special S6 jumper is correctly connected,while it is not in the case the jump is connected in verticalposition across S5 and S6 (see fig. 2).If the S6 jumper is connected when the communication boardis not present, the diagnostic function displays a message offailure, behaving as if the board was present and faulty.Appendix A lists the parameters available for the network.

pag. 12


4.15 RS485 serial communication and MODBUS protocol

Concerning the communication of devices provided withsoftware version 2.00 and subsequent, three different versionsare possible:- whitout any communication card (version

MX3IPG2A .11 e .12);- provided with LonWorks(TM) communication card (version

MX3IPG2A .61 e .62);- provided with Modbus communication card (version

MX3IPG2A .71 e .72);The identification of the installed communication card isautomatic.When using an unit provided with LonWorks(TM) communicationcard, it's required first to effect the relay wiring according to itswiring diagram and later proceed with the configuration of allconnected devices; the automatic configuration of connecteddevices is possible by connecting a PC provided with PCLTA10or SLTA10 card, in which CORMOX2 software has beeninstalled.When using a device provided with Modbus communicationthe configuration of each relay may be realized by the frontinterface, or by the IRMA2 program installed on a PC connectedto the relay via front plug. The configuration may be realizedalso on relays not jet connected together and may be eventuallyorganized in files together with all other settings.

Modbus communication card configuration requires:

PARAMETER VALUE

Speed 300 Baud600 Baud

1200 Baud2400 Baud4800 Baud9600 Baud

19200 Baud38400 Baud

Parity NONEEVENODD

Data Bit 78

Stop Bit 12

Address 1 - 255 (0 broadcast)

This parameters can be programmed in local or remote mode.So, the following extension of the 'RELAY DATA' menu isavailable:

[MX3IPG2A ] relay type[Sw Vers 2.00/01] software version

ñ ò[PLANT IDENTIFIER][GenPan ] ðplant identifier

ñ ò[SPEED 38400 Bb] ðspeed setting[PARITY NONE ] ðparity setting

ñ ò[DATA BIT 8 ] ðdata bit setting[STOP BIT 1 ] ðstop bit setting

ñ ò[ADDRESS 111 ] ðaddress setting[ ]

On demand is available documentation about LonWorks(TM) and Modbusversions.

4.16 Fault recorder

The device can record the course of input currents (Ia, Ib, Ic, Io)and the logic states of the 8 LED's, the 5 auxiliary relays, the3 digital inputs and the 3 additional timers. The total recordingtime equals 2.5s, and can be divided into variable time beforestart-up and variable time after start-up. The fault recorderfunction can be started for: tstart, tripping, enabling of digitalinputs and timers. The selection of the starting parameters,the graphic display and reset of fault recorder can be madethrough a PC or a network. The function can even be reset byinterrupting the auxiliary voltage for a short while.

4.17 Checking tripping circuits for continuity

The use of a digital input enabled by normal de-energizingcombined with one of the TX timers allows the tripping coilcircuit to be monitored for continuity, whether the breaker isclosed or open.

pag. 13


5. LOCAL INTERFACE Key It scrolls the menu to the left or selects

the digit to be changed, if the settings

change function is enabled. [ï]

Key It resets the stored LED signals if the

cause has been removed, or the par-

tial counters, if you are in the "display

counters" menu.

It takes the end relays to quiescent

state when they are set to bistable

operation.

Key If pressed for at least 2s, this key

enables the settings to be changed.

When the settings change is ena-

bled, the green LED (RUN) lights up

blinking. If pressed once again for at

least 2s, the system goes back to the

normal running conditions and, pro-

vided that a confirmation is given, the

new settings become the current

ones (the key can only be reached by

removing the cover). During the set-

ting change operations, the device

continues working with the old set-

tings. If the changes made are con-

firmed in the presence of a fault, they

are not made the current ones until

the event is over: the interrupt state is

signalled for 3s by a message on the

display unit, after which you are

prompted to confirm the changes

made.

If pressed upon feeding the device

with auxiliary voltage until a failure

message appears on the display,

this key inhibits the device from oper-

ating.

Keys If simultaneously

pressed for at least 2s, these keys

enable the protection to be tested.

When the testing activity is enabled,

the green LED (RUN) lights up blink-

ing.

If simultaneously pressed for at least

2s during the TEST routine, these

keys enable you to leave the protec-

tion testing mode.

The local interface is made up of:- An LCD display unit organized on two lines of sixteen

characters each.Through a special keyboard-controlled scanning, the dis-play unit enables the settings to be read and changed, themeasurements, the counters, the logged events and thediagnostic information to be read.

- A keyboard or keypad made up of six keys, five of which caneven be reached when the cover is fitted through a speciallink.In addition to the above-mentioned scanning, the keyboardis also used to change the settings, to carry out tests thatrequire commands to be sent and stored indications to beset to zero. The keys that can be reached when the cover isfitted only allow for read-out and reset operations.

Key It scrolls the menu upwards or in-

creases a value, if the settings

change function is enabled. [ñ]

Key It scrolls the menu downwards or

decreases a value, if the settings

change function is enabled. [ò]

Key It scrolls the menu to the right or se-

lects the digit to be changed, if the

settings change function is enabled

[ð].

pag. 14


- Twelve LED's, four of which are rigorously dedicated togeneral running functions.

- A four-pin connector in compliance with FCC 68.By means of a special optoelectrical adapter, an opticalfibre cable and a RS232 optical converter, it allows thedevice to be locally linked with a personal computer.The P.C., through a special interface programme, makesit possible to read and change the settings, to read themeasurements, the counters, the logged events, the diag-nostic information and the fault recorder.

6. LCD MENU STRUCTURE

6.1 MAIN READING MENU

The device has a main menu, leading to several sub-menus(tree structure). All the displays can be made permanent .

[R Ω ] Present resistance value[U- Un ] Present direct voltage value

ñ ò[MENU: ENGLISH] Dialogue language[ ] ð change dialogue language

ñ ò[DATE ] present date and time[TIME ] ð change date and time

ñ ò[SETTINGS: ] view settings in use[ MAIN]

ñ ò[SETTINGS READING] ð view main settings[MAIN ]

ñ ò[SETTINGS READING] ð view spare settings[SPARE ]

ñ ò[ MEASUREMENTS ] ð View/reset present and stored[ ] measurements

ñ ò[ COUNTERS ] ð view counters and[ P=RESETTABLE ] reset partial counters

ñ ò[ EVENTS ] ð view[EVENTO 1=ULTIMO] stored events

ñ ò[ OUTPUT RELAYS ] ð view output relay[ ] settings

ñ ò[ DIGITAL ] ð view digital input[ INPUTS ] settings

ñ ò[ LED ] ð view LED settings[ ]

ñ ò[ RELAY DATA ] ð view model - soft. release[ ] and plant identifier

ñ ò[ DIAGNOSTIC ] ð view faults[ ] date of last change

6.1.1 Change dialogue language

The default language is ITALIAN.Here follows an example showing how to change the dialoguelanguage. Suppose we wish to set ENGLISH as the desiredlanguage.

a) Press the key ò or ñ until the following message appearson the display:

[MENU: ITALIAN ][ ]

b) By pressing the key ð the language change function isenabled, and the following message appears on the display:

[MENU: ITALIAN ][ ]

pag. 15


By pressing ò or ñ you scroll the stored languages menu. Forthe purpose of our example, we must stop when the followingmessage is displayed:

[MENU: ENGLISH ][ ]

d) By pressing ï you confirm the selected dialogue languageand go back to the main menu. The following message appearson the display:

[MENU: ENGLISH ][ ]

6.1.2 Change date and time

Access to "change date/time" is denied when the protection isnetwork-connected. If the network connection is made afterentering the change function, the local changes are not ena-bled.Let us assume we wish to change the starting date 10/06/93into 24/05/95.

a) Press the key ò or ñ until the display shows:[DATE 10/06/93][TIME 9:38:43]

b) By pressing the key ð the change function is enabled andthe following message appears on the display:

[ DATE 10/06/93][TIME 9:38:43]

c) By pressing ð select the value to be changed. To select thelast digit that makes up the date, press ð six times, the displayswill show:

[DATE 10/06/9 3][TIME 9:38:43]

d) By pressing ñ, increase the selected value. Hold the keypressed until the display shows:

[DATE 10/06/9 5][TIME 9:38:43]

e) By pressing ï , select the fourth digit that makes up the date,the display will show:

[DATE 10/0 6/95][TIME 9:38:43]

f) By pressing ò, decrease the selected value until the displayshows:

[DATE 10/0 5/95][TIME 9:38:43]

g) By pressing ï twice further, select the second digit thatmakes up the date, and the display will show:

[DATE 1 0/06/95][TIME 9:38:43]

h) By pressing ñ, change the selected value (upon reachingnumber 9, the tens will go up by one unit) until the displayshows:

[DATE 2 4/05/95][TIME 9:38:43]

i) Press ï until you move to the beginning of the line. Thedisplay will show:

[ DATE 24/05/95][TIME 9:38:43]

j) By pressing ò the "change time" function is enabled. Thesteps are the same as those described in c) to i).The device does not accept time or date settings that do notexist.The time counting starts upon moving from the digits that makeup the time to the wording TIME at the beginning of the line.

k) By pressing ï the changes made are confirmed and thesystem moves back to the main menu. The display will show:

[DATE 24/05/95][TIME 9:38:43]

6.1.3 Display settings in use

a) Press ò or ñ until the display shows, for instance:[SETTINGS IN USE:][ MAIN]

The second line will display the group of settings the devicecurrently uses.Any <!> possibly displayed, notwithstanding the contents of thesecond line, indicates the device is working with the SPAREsettings.

[SETTINGS IN USE:][ <!> MAIN]

The device will continue working with the SPARE settings aslong as the "change settings" command sent by the IN DIG1digital input remains enabled. When the <!> characters disap-pear, the device restarts working with the group of settingsdisplayed.

6.1.4 Display main settings

a) Press ò or ñ until the display shows:[SETTINGS READING][ MAIN ]

b) By pressing ð, the main settings display sub-menu isentered, by pressing ò or ñ the following sub-menu is scrolled:rated frequency fndirect rated voltage setting range (**) S..direct rated voltage Unfirst underresistance threshold R<starting signalling delay R< tstarttrip delay R< t1second underresistance threshold R<<starting signalling delay R<< tstarttrip delay R<< t2alternating overcurrent threshold I~>starting signalling delay I~> tstarttrip delay I~> t3first direct undervoltage threshold U-<U-< starting signalling delay tstarttrip delay U-< t4second direct undervoltage threshold U-<<U-<< starting signalling delay tstarttrip delay U-<< t5first direct overvoltage threshold U->U-> starting signalling delay tstarttrip delay U-> t6

pag. 16


second direct overvoltage threshold U->>U->> starting signalling delay tstarttrip delay U->> t7additional timer t_X1additional timer t_X2additional timer t_X3min. pulse width of end relays t_IMP

(**) the settings range relies on jumper S20, S21, S22 or S23which are closed as follows: jumper closed setting range

S20 30.00 - 300.00 VS21 3.00 - 30.00 VS22 0.30 - 3.00 VS23 0.03 - 0.30 V

c) By pressing ï,anywhere in the sub-menu, you will go backto the main viewing menu:

[SETTINGS READING][MAIN ]

6.1.5 Viewing spare settings

a) Press ò or ñ until the display unit shows:[SETTINGS READING][SPARE ]

b)Press the key ð to enter the spare setting viewing menu, thenpress ò or ñ to scroll across the whole submenu that lists:

first underresistance threshold R<starting signalling delay R< tstarttrip delay R< t1second underresistance threshold R<<starting signalling delay R<< tstarttrip delay R<< t2alternating overcurrent threshold I~>starting signalling delay I~> tstarttrip delay I~> t3first direct undervoltage threshold U-<starting signalling delay U-< tstarttrip delay U-< t4second direct undervoltage threshold U-<<starting signalling delay U-<< tstarttrip delay U-<< t5first direct overvoltage threshold U->starting signalling delay U-> tstarttrip delay U-> t6second direct overvoltage threshold U->>starting signalling delay U->> tstarttrip delay U->> t7

Those parameters that are not present in the SPARE menutake the same values as the MAIN settings.

c) By pressing the key ï anywhere in the sub-menu, you go backto the main reading menu:

[SETTINGS READING][ SPARE ]

6.1.6 Display current and stored measured values

a) Press the key ò or ñ until the display shows:[ MEASUREMENTS ][ ]

b) By pressing the key ð you will enter the measurementdisplay menu, and by pressing the key ò or ñ the following sub-menu will be scrolled across:present resistance value in Ohm R(*)present direct voltage in Un U-present injected alternating voltage value in Volt U~present injected alternating current in Ampere I~injected overcurrent value in Ampere I~MAX

c) By pressing RESET you may cancel the maximum storedvalues being displayed.

By pressing the key ï anywhere in the submenu, you will goback to the main reading menu:

[ MEASUREMENTS ][ ]

(*) When resistance cannot be measured, the symbol ---- willbe displayed; when resistance exceeds 6500 Ohm, the sym-bol >6500 Ω will be displayed.

6.1.7 Viewing counters

a) Press the key ò or ñ until the display shows:[ COUNTERS ][P =RESETTABLE ]

b) By pressing the key ð you will enter the counter display sub-menu, and by pressing the key ò or ñ the following sub-menuwill be vertically scrolled across:

total trips of first underresistance threshold R< Tpartial trips of first underresistance threshold R< Ptotal trips of second underresistance threshold R<< Tpartial trips of sec. underresistance threshold R<< Ptotal trips of alternating overcurrent threshold I~> Tpartial trips of alternating overcurrent threshold I~> Ptotal trips of first direct undervoltage threshold U-< Tpartial trips of first direct undervoltage threshold U-< Ptotal trips of sec. direct undervoltage threshold U-<< Tpartial trips of sec. direct undervoltage threshold U-<< Ptotal trips of first direct overvoltage threshold U-> Tpart. trips of first direct overvoltage threshold U-> Ptotal trips of sec. direct overvoltage threshold U->> Tpartial trips of sec. direct overvoltage threshold U->>P

c) By pressing the RESET button, the partial counter beingdisplayed can be reset.

d) By pressing the key ï , you go back to the main display menu:[ COUNTERS ]

[ P =RESETTABLE ]

6.1.8 Viewing events

a) Press ò or ñ until the display shows:[ EVENTS ][EVENT 1=LAST]

b) By pressing ð you enter the sub-menu where the eightevents to be stored can be selected. The display shows:

[EVEN.1 DD/MM/YY ][ hh:mm:ss.xxx ]

pag. 17


the first line displays the event number, the day, the month andthe year, whereas the second line lists the time, the minutes,the seconds and thousandths of a second concerning theevent.

c) By pressing the key ò or ñ, select the event to be displayed.Once the selection is made, press ð ; thus, you enter the eventdisplay sub-menu, and by pressing ò or ñ the following sub-menu is scrolled:

tripped threshold TRIPvalue of resistance in Ω when the trip occurred R_Gvalue of alternating current in A when the trip occurred I~Gdirect voltage value in mult.of Un when the trip occurredU-_G

d) By pressing ï anywhere in the sub-menu, you go back toevent display sub-menu; to display other events go through stepc) again. By pressing ï anywhere in the sub-menu you go backto the main reading menu:

[ EVENTS ][EVENT 1=LAST]

6.1.9 Display output relays

a) Press ò or ñ until the display shows:

[OUTPUT RELAYS][ ]

b) By pressing ð you enter the sub-menu that displays theallocation of the auxiliary output relays. The display shows:

[REL X12345][ON ↑↑↑↑↑]

which stands for the enabling by normal energizing (↑) or de-energizing (↓) of each relay.Press ò to scroll across the whole submenu, the display unitwill show:

[R< START][REL X..3.5]

the first line displays the function that is associated with therelay or relays listed in the second line.By pressing the keys ò or ñ the sub-menu is scrolled across.The functions that can be associated with the output relays are:

delayed start of first underresistance threshold R< STARTfirst underresistance threshold trip R< TRIPdelayed start of sec. underresistance threshold R<< STARTsecond underresistance threshold trip R<< TRIPdelayed start of injected overcurrent threshold I~> STARTalternating overcurrent threshold trip I~> TRIPundervoltage (diagnostics) threshold trip U~< TRIPovervoltage (diagnostics) threshold trip U~> TRIPdelayed start of first direct undervoltage thresholdU-< STARTfirst direct undervoltage threshold trip U-< TRIPdelayed start of sec. direct undervoltage thresholdU-<< STARTsec. direct undervoltage threshold trip U-<< TRIPdelayed start of first direct overvoltage threshold U-> STARTfirst direct overvoltage threshold trip U-> TRIPdelayed start of sec. direct overvoltage thresholdU->> STARTdirect overvoltage threshold trip U->> TRIP

timer tX1 overtime t_X1 TRIPtimer tX2 overtime t_X2 TRIPtimer tX3 overtime t_X3 TRIPfirst digital input fed IN DIG 1second digital input fed IN DIG 2third digital input fed IN DIG 3

It is furthermore possible to display the output relays that bearthe following settings:minimum pulse width t_IMPbistable operation MEMOR

c) By pressing the key ï anywhere in the sub-menu, you goback to the main reading menu:

[OUTPUT RELAYS][ ]

6.1.10 Viewing digital inputs

a) Press the key ò or ñ until the display shows:[ DIGITAL ][ INPUTS ]

b) By pressing the key ð you enter the sub-menu that lists theallocation of digital inputs. The following message appears onthe display:

[IN DIG 123][ON ↑↑↑]

which stands for the enabling by normal energizing (↑) or de-energizing (↓) of each input.Press ò to scroll across the whole sub-menu, the display unitwill show:

[BLOC. R< ][IN DIG ...]

the first line contains the function that is associated with thedigital inputs listed in the second line.By pressing the keys ò or ñ the sub-menu is scrolled.The functions that may be associated with the inputs are:

first underresistance threshold trip lock BLOC. R<second underresistance threshold trip lock BLOC. R<<overcurrent threshold trip lock BLOC. I~>undervoltage threshold trip lock BLOC. u~<overvoltage threshold trip lock BLOC. u~>first direct undervoltage threshold trip lock BLOC. U-<second direct undervoltage threshold trip lock BLOC. U-<<first direct overvoltage threshold trip lock BLOC. U->second direct overvoltage threshold trip lock BLOC. U->>timer tX1 start t_X1timer tX2 start t_X2timer tX3 start t_X3Switching to spare settings SETTINGS SWITCHLED's and output relays reset RESET


[ DIGITAL ][ INPUTS ]

6.1.11 Display LED's

a) Press the key ò or ñ until the following message appearson the display:

[ LED ][ ]

pag. 18


b) By pressing the key ð you enter the sub-menu that displaysthe LED allocation. The following messages will be displayed:

[I> START][LED L..3..6.8]

the first line displays the function that is associated with theLED's listed in the second line.By pressing the keys ò or ñ, the sub-menu is vertically scrolled.The functions that can be associated with the LED's are:

delayed start of first underresistance threshold R< STARTfirst underresistance threshold trip R< TRIPdelayed start of sec. underresistance threshold R<< STARTsecond underresistance threshold trip R<< TRIPdelayed start of injected overcurrent threshold I~> STARTalternating overcurrent threshold trip I~> TRIPundervoltage (diagnostics) threshold trip U~< TRIPovervoltage (diagnostics) threshold trip U~> TRIPdelayed start of first direct undervoltage thresholdU-< STARTfirst direct undervoltage threshold trip U-< TRIPdelayed start of sec. direct undervoltage thresholdU-<< STARTsec. direct undervoltage threshold trip U-<< TRIPdelayed start of first direct overvoltage threshold U-> STARTfirst direct overvoltage threshold trip U-> TRIPdelayed start of sec. direct overvoltage thresholdU->> STARTdirect overvoltage threshold trip U->> TRIPtimer tX1 overtime t_X1 TRIPtimer tX2 overtime t_X2 TRIPtimer tX3 overtime t_X3 TRIPfirst digital input fed IN DIG 1second digital input fed IN DIG 2third digital input fed IN DIG 3

It is furthermore possible to display the LED's that bear thefollowing settings:bistable operation MEMOR


[ LED ][ ]

6.1.12 Viewing relay data

a) Press ò or ñ until the display shows:[ RELAY DATA ][ ]

b) By pressing the key ð you enter a sub-menu where theprotection model and the software release are displayed:

[MX3IPG2A ][Soft Rel. 1.00]

c) By pressing the key ò once again, the second line will displaythe alphanumeric identification code that the user gave to thedevice, for instance:

[PLANT IDENTIFIER][CELL No. 17bis ]

d) By pressing the key ï anywhere in the sub-menu, you goback to the main reading menu:

[ RELAY DATA ][ ]

6.1.13 Diagnostic display

1) Fault location

a) Press the key ò or ñ until the following message isdisplayed:

[ DIAGNOSTIC ][ ]

In the presence of VITAL FAULTS, the device automaticallydisplays the window, without needing to enter the diagnosticmenu.

b) By pressing the key ð you enter a sub-menu that displaysthe operating state of the relay. The display will show:

[LAST SETTING ][DD/MM/YY hh:mm]

the second line displays the day, the month, the year, the timeand the minutes of the time when last change was made to thesettings.

c) By pressing the key ò once again, if the device has notdetected any failure, the following message will be displayed:

[ RUNNING ][ ]

If NON-VITAL FAULTS are detected, the following message willbe displayed:

[FAULT ][ABCDE.....KL ]

whereas, if VITAL FAULTS are detected, the <!> characters willbe displayed, too:

[FAULT <!>][.....FGHIJ... ]

The second line displays one or more fault identificationcodes.The following table provides the fault codes and the corre-sponding fault description:Code fault descriptionA X1 relay coil interrupted or related driverB X2 relay coil interrupted or related driverC X3 relay coil interrupted or related driverD X4 relay coil interrupted or related driverE X5 relay coil interrupted or related driverF internal feeder failureG EEPROM failureH Internal RAM failureI External RAM failureJ Analogue to Digital converterK communication board failure or enabled but

not configuredL internal clock failure

If jumper S6 (see fig.2) that enables the communication boardis connected when the board is not present, the K code showsup, as if a failure were detected in the board.

d) As far as the NON-VITAL FAULTS are concerned, by pressingthe key ï anywhere in the sub-menu you go back to the maindisplay menu:

[ DIAGNOSTIC ][ ]

pag. 19


whereas, as regards the VITAL FAULTS, you can only leave thediagnostic sub-menu, if the device allows you to do that, byentering the “settings change” menu.

2) Inhibited device

The condition of “inhibited device” is displayed as follows:[FAULT <!>][..............P ]

This condition can only be reset by entering the "settingschange“ menu (it is however necessary to confirm when youare prompted to SAVE CHANGES, although no setting hasbeen changed).

Warning: even simply view the set parameters from the“settings change” menu, since upon leaving this condition, thedevice will not be inhibited any longer.If, beside inhibiting the device, you have also deconfigured it,the return to operation causes a fault K message to bedisplayed until the unit is configured anew (see paragraph4.14).

6.2 MAIN SETTING CHANGE MENU

By pressing the key anywhere in the display menusfor at least 2s, the main settings change menu is entered.Thence, several sub-menus can be entered (tree- structure).When the settings change function is enabled, the green LED(RUN) lights up blinking.If the settings change menu is already acceded through a PCor a network, any local change is inhibited, and the followingmessage will be displayed:

[SETTINGS CHANGE][NOT AVAILABLE ]

The access priority to the changing function among PC, net-work and keyboard is time-dependent.

During the settings change operations, the device continuesworking with the old settings.All the displays can be made permanent.

[SETTINGS IN USE:] settings in use[ MAIN] ð select of current setting group

ñ ò[SETTINGS CHANGE] ð change main settings[MAIN ]

ñ ò[SETTINGS CHANGE] ð change spare settings[SPARE ]

ñ ò[ OUTPUT RELAYS ] ð output relays[ ] settings

ñ ò[DIGITAL INPUTS ] ð digital inputs[ ] settings

ñ ò[ LED ] ð LED's settings[ ]

ñ ò[ RELAY DATA ] ð setting of[ ] alphanumeric code

ñ ò[ LCD ] ð permanent display back-lighting[AUTOMATIC RETURN] (LCD) enabled

By pressing the key anywhere in the changingmenus for at least 2 seconds, you go back to the main displaymenu, but you are first prompted to confirm or discard thechanges made:

[NEW SET.CONFIRM?][< NO YES >]

By pressing ï all the changes made are discarded, whereasby pressing ð the changes made are confirmed.The green LED (RUN) stops blinking and becomes perma-nent.If upon confirming the changes, a fault is detected, the settingsare not accepted as long as the fault event persists. This stateis signalled for 3s by the following message:

[SETTINGS CHANGE][DELAYED ]

once the event is over, you are prompted to confirm thechanges made again.If the transfer is interrupted is due to a digital input beingenabled which cannot be disabled at the moment and youneed to change the settings, the device must be inhibited; afterthat, you can start changing the settings (see paragraphs 4.14and 6.1.13).

Note: the “change settings” function can even be implementedwhen the device is “forced” to use the SPARE SETTINGS. Insuch a case, the system only interrupts the selection ofSETTINGS IN USE: MAIN until the external forcing signaldisappears. If a setting is changed when the system is “forced”from the outside, the following message is displayed:

[SPARE SETTINGS][FROM EXT.CONTROL]

All the following examples take their start from the mainsettings change menu.

6.2.1 Select current settings group

a) Press the key ò or ñ until the following message is dis-played: [SETTINGS IN USE:] [ MAIN]

b) After pressing the key ð, the current settings can start beingchanged. The following message is displayed:

[SETTINGS IN USE:][ MAIN]

c) By pressing ò or ñ, the following message is displayed:[SETTINGS IN USE:][ SPARE]

pag. 20


d) By pressing the key ï the new selection is confirmed, andthe system goes back to the main settings change menu. Thefollowing message is displayed:

[SETTINGS IN USE:][ SPARE]

6.2.2 Change main settings


[SETTINGS CHANGE][MAIN ]

b) By pressing the key ð , you enter the main settings changesub-menu, which contains all the parameters already listed in§ 6.1.3.

c) By pressing the keys ò or ñ, you can vertically scroll the sub-menu, and by pressing the key ð you can start changing thedisplayed parameter. The change can be made by pressingthe keys ò or ñ .

d) By repeatedly pressing the key ï anywhere in the sub-menu, you go back to the main changing menu:


Example of setting

Let us suppose we need to enable and set the rotor groundthreshold R< to 1015 Ohm starting from an initial setting of990, OFF.Go through steps a) and b)Press ò or ñ until the threshold to be changed is selected ondisplay:

[ R< OFF][R< 0990 Ω ]

Press ð to start changing the selected setting I>>>,the displayunit will show:

[R< OFF][R< 0990 Ω ]

Press ò or ñ to set it ON and the display will show:[R< ON ][R< 0990 Ω ]

Press ï to move back to the beginning of the line. Thus, bypressing ò, you may move to the second line.Press ð to select the digit to be changed.In our case, by pressing 4 times the key ð, the display unit willshow:

[R< ON ][R< 099 0 Ω ]

Press ñ to increase the selected numberuntil the value re-quired by our example is reached:

[R< ON ][R< 099 5 Ω ]

Now, by pressing ï you select the third digit making up thesetting, the display unit will show:

[R< ON ][R< 09 95 Ω ]

By pressing ñ the digit is changed (on reaching number 9 theunits will increase by 1) until the display unit shows:

[R< ON ][R< 10 15 Ω ]

Press ï to move back to the beginning of the line and go backto the main editing menu:


Warning:In the event of the direct rated voltage setting range beingchanged, please remember to move the internal jumper(S20....S23) as follows:

jumper closed setting rangeS20 30.00 - 300.00 VS21 3.00 - 30.00 VS22 0.30 - 3.00 VS23 0.03 - 0.30 V

The movement of the jumper causes the setting to be changed,as the latter is multiplied times 10d where d is the distancebetween the old and the new jumper, for instance:

old settingjumper S20setting range 30-300 Vset Un 165 V

new settingjumper S23setting range 0.03-0.30 Vset Un 165 x 10(20-23)= 0.16 V

6.2.3 Change spare settings


[SETTINGS CHANGE][SPARE ]

b) By pressing the key ð , you enter the spare settings changesub-menu, which contains all the parameters already listed in§ 6.1.5.

c) By pressing the keys ò or ñ ,you can vertically scroll the sub-menu, and by pressing the key ð you can start changing thedisplayed parameter. The change can be made by pressingthe keys ò or ñ .The settings change procedure mirrors that described in theexample applying to the main settings.

d) By pressing the key ï anywhere in the sub-menu, you goback to the main settings change menu:

[SETTINGS CHANGE][SPARE ]

6.2.4 Set output relays

a) Press the key ò or ñ until the display shows:[OUTPUT RELAYS][ ]

pag. 21


b) By pressing the key ð , you enter the output relay setting sub-menu, which contains all the parameters already listed in §6.1.5

c) By pressing the keys ò or ñ , you can vertically scroll the sub-menu, and by pressing the key ð you can start changing thedisplayed parameter. The change can be made by pressingthe keys ò or ñ.

d) By pressing the key ï anywhere in the sub-menu, you goback to the main settings change menu:

[OUTPUT RELAYS][ ]

Example of allocation

Consider we need to allocated the trip of the overcurrentthreshold R< to output relay X5 starting from an initial settingof R< allocated to X2Go through steps a) and b) until the display unit shows:

[R< TRIP][ REL X.2...]

Each position after letter X is an output relay. More relays maybe allocated to one function.Press ð to move to the relay you wish to associate.In our case, by pressing the key ð five times, the display unitwill show:

[R< TRIP][REL X.2.. .]

By pressing ò or ñ the selected relay X5 is dissociated and thedisplay unit will show:

[R< TRIP][REL X.2.. 5]

By pressing ï you select the second relay, the display unit willshow:

[R< TRIP][REL X. 2..5]

Press ò or ñ to dissociate the selected relay, the display unitwill show:

[R< TRIP][REL X. ...5]

Press ï to move back to the beginning of the lineand return tothe main editing menu:

[OUTPUT RELAYS][ ]

6.2.5 Set digital inputs

a) Press the key ò or ñ until the display shows:[ DIGITAL INPUT ][ ]

b) b) By pressing the key ð , you enter the digital input settingsub-menu, which contains all the parameters already listed in§ 6.1.10.

c) By pressing the key ò or ñ the sub-menu is verticallyscrolled, and by pressing the key ð, you can start changingthe selected parameter. The change can be made by pressingthe key ò or ñ.

To switch from the main settings to the backup settings, thedigital input number 1 (IN DIG 1) must be used

SETTINGS SWITCHTo reset the LEDs and the auxiliary relays, the digital inputnumber 3 (IN DIG 3) must be used.

RESET(LED+Xmem)

The setting procedure mirrors that described in the exampleof output relay configuration.

d) By pressing the key ï anywhere in the sub-menu, you goback to the main changing menu:

[ DIGITAL INPUT ][ ]

6.2.6 LED Settings

a) Press the key ò or ñ until the display shows:[ LED ][ ]

b) By pressing the key ð , the LED setting sub-menu, whichcontains the parameters already listed in § 6.1.10., is entered.

c) By pressing the key ò or ñ the sub-menu is verticallyscrolled, and by pressing the key ð, you can start changingthe displayed parameter. The change can be made by press-ing the key ò or ñ .The setting procedure mirrors that described in the exampleof output relays setting.

d) By pressing the key ï anywhere in the sub-menu , you goback to the main changing menu:

[ LED ][ ]

6.2.7 Set alphanumeric code

a) Press the key ò or ñ until the display shows:[ RELAY DATA ][ ]

b) By pressing the key ð, you can change/set an alphanumericcode that identifies the device. The display will show, forinstance:

[PLANT IDENTIFIER][CELL N. 17bis ]

c) By further pressing the key ð you select the character(s) tobe changed, and by pressing ò or ñ all the capital and smallletters of the alphabet, all the numbers and some specialcharacters, among which the blank space, are vertically scrolled.

d) By pressing the key ï, the cursor moves back to thebeginning of the line (no character selected), and by furtherpressing the key ï , you go back to the main changing menu:

[ RELAY DATA ][ ]

pag. 22


6.2.8 LCD back-lighting

a) Press the key ò or ñ until the display shows:[ LCD ][AUTOMATIC RETURN]

b) By pressing the key ð, you can set the LCD back-lightingto permanent (OFF) or timed (ON). Let us assume the displayshows:

[ ON ][ ]

c) By pressing the keys ò or ñ, the current setting can be

changed:[ OFF][ ]

d) By pressing the key ï, you go back to the main changingmenu:

[ LCD ][AUTOMATIC RETURN]

6.3 TEST MENU

By pressing the keys for at least 2s

anywhere in the main reading menus, the TEST function,which is highlighted by the blinking of the green LED (RUN),is enabled.

[TEST LED][ YES >] ð TEST LED’s L1-L8 and display

ñ ò[TEST RELAY X1][ YES >] ð TEST relay X1





The test to be carried out on the auxiliary relay X.. makes thelatter trip, so that the associated command and/or signal canbe sent. That is why, before running it, the systems promptsyou to further confirm its execution:

[ ARE YOU SURE? ][< NO YES >]

If, upon confirming the execution, some starting or trippingcommands are already present or a digital input combinedwith a timer proves to be enabled, the test is not performed, andthis condition is signalled by the following message:

[TEST ][NOT AVAILABLE ]

The LED and display test makes them light up for two seconds.Therefore, it can be run at any time during operation

By pressing the two keys for two seconds

anywhere in the test menu, the TEST function is disabled. Thegreen LED (RUN) stops blinking, and the system goes backto the main display menu.

pag. 23


7. APPLICATION AND USE

The device is suitable to detect the ground rotor faults forsynchronous machines.It is also suitable to monitor direct voltage (Vaux)

8. INSTALLATION - TRANSPORT

8.1 ESD Electrostatic charges

The relay uses electronic components that are highly sensitiveto electrostatic charges. Therefore, the operator who happensto handle the moving part of the equipment and come in contactwith the electronic circuits, must take preventive measures toavoid damaging the relay:

- before removing the movable part, the operator must reachthe same potential as the equipment by touching the case- avoid touching electronic components, printed circuitboards and connectors, as far as this is possible. Handleit by using the mechanical frame.- lay the device on surfaces that are antistatic or feature thesame potential as the operator's.- only store and transport the relay by using the specialantistatic bag.

Special electronic devices require the operator and the unit tobe both grounded along with any measuring instrument, whenthis is possible.As far as the following action is possible and reasonable, donot pull out the moving part from the casing to avoid causingmechanical and electrostatic damages to the protection.

8.2 Acceptance - storage

Although protective relays are generally of robust construction,they require a careful treatment prior to installation on site,since they must be carefully packed and unpacked, withoutapplying any force and using suitable tools.Once supplied, the relays must be thoroughly inspected toensure that they have not undergone shipping damages.If the relays are not immediately installed upon reception, theymust be stored in places free from dust and moisture, in theiroriginal packing.Storage temperature: -25°C + 80°C.

8.3 Assembling and connection

- Remove the protective cover until the four fastening holesbecome visible.- Place the equipment into the hole of the panel-board andsecure it by fastening the four screws (see fig. 6)- Connect the ground screw of the equipment to the protectionground of the panel-board using connectors of suitable gauge(>4mm2) and as short as possible (<1m).- The connections must be made through the screw or Fastonconnections of the interface terminal blocks. In the event ofFaston wiring, the cover that provides the terminal block withthe IP20 protection class must be placed before the Faston isconnected to the relay. In the event of screw wiring, the side finsof the IP20 cover that correspond to the wired terminals mustbe removed or folded.The assembling and wiring must be carried out according tothe best workmanship.

pag. 24


9. SETTING THE UNIT AT WORK

The relay is supplied with factory settings and configurationsas indicated in tables A, B and C (factory settings).These settings may happen not to match the specific systemwhere the unit is to be placed. Therefore, the relay settingsmust be changed in compliance with the tables D, E and F forcustomer’s use, which must be used as a support to developa customized setting scheme.

9.1 Safety regulations

During the equipment tests and the start-up, the general safetyregulations applicable to electrical systems must be com-plied with. Failure to comply with these regulations mightcause harm to the working staff and damage to property. All theinspections and tests must only be carried out by speciallytrained staff.

9.2 Checking nameplate ratings

Inquire whether the equipment ratings are consistent withthose of the system, namely:- the auxiliary voltage- the auxiliary voltage of the attachment X2/IPG2A- the direct rated voltage, the check shall be carried out bychecking the position of the jumper located on the board (seefig. 4a, 4b, 4c, 4d). warning: any wrong position of the jumperas to the set values is likely to damage the device .- the presence of the special jumper S6, see figure 2, if thecommunication board is provided and the network is present.

I WARNINGhazardous voltages may remain in the device even when thelatter has been de-energized or pulled out of its casing(capacitor's storage)

9.3 Final test with gauging of the attachment X2/IPG2A

Inject auxiliary voltage into the device.On switching on, after a long time of power failure, the devicecan indicate an 'L' type fault (internal clock), a NON-VITALFAULT which does not affect the remaining functions: byupdating DATE and TIME, the normal service conditions arerestored.If the system is running and the relay settings are unknown, theunit must be inhibited from operating before feeding it withvoltage by pressing the “settings change” key (see § 4.14 and6.1.13 clause 2) to avoid troubles.Select the rated frequency of the system on the device, set therated current and the rated direct voltage.Load the settings and configure the relays, the LED’s and thedigital inputs as per the design plans.

Since the unit is equipped with a self-monitoring system, allhardware and software failures possibly occurring are auto-matically detected; this makes it useless to test the thresholdsfor accuracy, which can however be tested by making refer-ence to the tolerances specified on the catalogue.

The following tests are however recommended:

Power supply unit test

- Check that the burden of the auxiliary voltage circuit fallswithin the 5 to 10W range as far as the d.c. supply isconcerned, and within the 10 to 20VA range as far as the a.c.supply is concerned.The feeder is protected by a special 5x20 2 A rapid fuse,class IEC127/II, as regards the unit with 19-100Vcc (or 19-72Vca) auxiliary voltage, and a 1A fuse as regards the unit

with 64-300Vcc (or 64-275Vca) auxiliary voltage.

Gauging the attachment X2/IPG2A

- connect to one another terminals 9B-10B-12B of theattachment X2/IPG2A- inject the (alternating) auxiliary voltage into the attachmentX2/IPG2A- ensure that the connection between the attachment X2/IPG2A and the device MX3IPG2A is correct- enter the main Settings Change mode (see 6.2 - 6.2.2)-press ò until the following message is displayed:

[ CALIBRATION ][X2/IPG2A YES >]

-press ð, the display unit will show:[ CONFIRM? ][< NO YES >]

-press ð- remove the connection among terminals 9B-10B-12B ofthe attachment X2/IPG2A- leave Settings Change

Checking connections

- Connect between rotor winding and mass a resistancethat ranges between 200 and 6500 Ohm in value and checkit matches the values displayed in the MEASUREMENTmenu.- Inject a direct voltage into the input (terminals 10-9) andcheck it matches the values displayed in the MEASURE-MENT menu.- Test each output relay through the procedure given in theTEST MENU paragraph, simultaneously test the relatedexternal circuit.- Check the wiringof the digital inputs to ensure it matchestheprovisions of the design plans.

If the relay has not worked correctly or shows VITAL failures,it must be put out of order and sent back to the factory for repairor re-gauging.The presence of a NON-VITAL fault does not cause an ill-timedoperation, but demands an analysis of the fault type to assessits importance (for instance, a failing end relay should bereplaced with another end relay that is not currently being usedor, else, whose function is not strictly required).The possibility of exchanging the relays makes it possible tomaintain the protection scheme working during repairs, sothat any faulty relay can be replaced with a new one of the sametype.

pag. 25


To complete the start-up stage, before setting the system atwork, ensure that:

- the device settings match the design specifications.- the device bears the correct plant-identifying alphanu-meric code.- all the device memories (LED’s, maximum values, partialcounters and wear index) are reset.- the green Uaux and RUN LED’s are lit up with permanentlight; in the event of network connection, the green RxTx LEDmust be lit up, too.- the LED’s indicating labels and the device rating platedisplay the correct information.

You can leave the relay with the display showing any of thewindows of the main reading menu.

pag. 26


SETTING RANGE OF Un: 30 - 300 V

Position of jumper n S20

SETTING RANGE OF Un: 3 - 30 V


SETTING RANGE OF Un: 0.3 - 3 V


SETTING RANGE OF Un: 0.03 - 0.3 V


fig. 4a fig. 4b

fig. 4c fig. 4d

Warning:

jumpers n S1 - S3 - S7 shall not be removed (as per the originalfactory settings)

TOP SIDE

RELAYFRONT

TOP SIDE

RELAYFRONT

TOP SIDE

RELAYFRONT

TOP SIDE

RELAYFRONT

pag. 27


Warning:

In the event of one sole polarity of the rotor winding (BRUSHLESSenergizer) being available, the injectors (terminals 9B - 10B)shall be connected to one another.

fig. 5

pag. 28


OVERALL DIMENSIONS

DRILLING DIME TERMINALS

The casing can even be mountedon a 19" rack panel, R4MX3 type,4U in height

fig. 6

pag. 29


OVERALL DIMENSIONS AND DRILLING DIME - ATTACHMENT X2

fig. 7

HOLES HOLES

DRILLING WITH REAR CONNECTIONS DRILLING WITH REAR CONNECTIONS

pag. 30


WARNING:

The factory settings may prove not to suit the system. Therefore, the device must be configured anew upon installation

tab. A - FACTORY SETTINGS

RELAY CONTROL MATRIX LED'S

1 2 3 4 5 DESCRIZIONE FUNZIONE 1 2 3 4 5 6 7 8

X del. start of first underresistance threshold R< START

X first underresistance threshold trip R< TRIP X

X del. start of 2dn underresistance threshold R<< START

X 2nd underresistance threshold trip R<< TRIP X

overcurrent threshold start I~> START

X overcurrent threshold trip I~> TRIP X

X undervoltage threshold trip U~< TRIP X

X overvoltage threshold trip U~> TRIP X

del. start of first dir. undervolt. threshold U-< START

X scatto first dir. undervoltage threshold U-< TRIP X

del. start of second dir. undervolt. threshold U-<< START

X second dir. undervoltage threshold trip U-<< TRIP X

del. start of first dir. overvoltage threshold U-> START

X first dir. overvoltage threshold trip U-> TRIP X

del. start of second dir. overvoltage thresh. U->> START

X second dir. overvoltage threshold trip U->> TRIP X

timer tX1 overtime t_X1 TRIP



first digital input fed IN DIG 1

second digital input fed IN DIG 2

third digital input fed IN DIG 3

minimum pulse width t_IMP / / / / / / / /

bistable operation MEMOR X X X X X X X

normally energized end relays

/ not to be allocatedX allocatednormally de-energized end relays

pag. 31


tab. B - TABLE OF SETTINGS

CONTROL MATRIX DIGITAL

INPUTS

DESCRIPTION FUNCTION 1 2 3

input enabled by normal de-energizing

first underresistance threshold trip lock BLOC. R<

sec. underresistance threshold trip lock BLOC. R<<

overcurrent threshold trip lock BLOC. I~>

overvoltage threshold trip lock BLOC. U~>

undervoltage threshold trip lock BLOC. U~<

first dir. undervolt. threshold trip lock BLOC.U-<

sec. dir. undervolt. thr. trip lock BLOC.U-<<

first dir. overvolt. threshold trip lock BLOC.U->

sec. dir. overvolt. threshold trip lock BLOC.U->>

timer tX1 start t_X1



switching to spare settings SETTINGS SWITCH / /

reset LED's and output relays RESET (LED+Xmem) / / X

WARNING:


/ not to be allocated

X allocated

pag. 32


WARNING:


TABELLA DI REGOLAZIONE

tab. C - FACTORY SETTINGS

DESCRIPTION FUNCTION MAIN

ON OFF VALUE

rated frequency fn 50 Hz

direct voltage range IN_U- S20

direct rated voltage Un- 110 V

first underresistance threshold R< X 2000 Ohm

starting signalling delay R< tstart 0 s

trip delay R< t1 10 s

second underresistance threshold R<< X 500 Ohm

starting signalling delay R<< tstart 0 s

trip delay R<< t2 3 s

overcurrent threshold I~> X 0.022 A

starting signalling delay I~> tstart 0 s

trip delay I~> t3 5 s

first dir. undervoltage threshold U-< X 0.8 Un

starting signalling delay U-< tstart 0 s

trip delay U-< t4 5 s

second dir. undervoltage threshold U-<< X 0.7 Un

starting signalling delay U-<< tstart 0 s

trip delay U-<< t5 1 s

first dir. overvoltage threshold U-> X 1.15 Un

starting signalling delay U->> tstart 0 s

trip delay U->> t6 5 s

second dir. overvoltage threshold U->> X 01.2 Un

starting signalling delay U->> tstart 0 s

trip delay U->> t7 1 s

min. pulse width of end relays t_imp 0.1 s

additional timer t_X1 1 s



fault recorder trigger TRIP

fault recorder pretrigger delay 2 s

SPARE

ON OFF VALUE

/ / /

/ / /

/ / /

X 2000 Ohm

0 s

10 s

X 500 Ohm

0 s

3 s

X 0.022 A

0 s

5 s

X 0.8 Un

0 s

5 s

X 0.7 Un

0 s

1 s

X 1.15 Un

0 s

5 s

X 1.2 Un

0 s

1 s

/ / /

/ / /

/ / /

/ / /

/ / /

/ / /

/ not to be allocated: the same settings as theMAIN ones applysettings: MAIN timed LCD backlighting: OFF

pag. 33


tab. D

RELAY CONTROL MATRIX LED'S

1 2 3 4 5 DESCRIPTION FUNCTION 1 2 3 4 5 6 7 8

delayed start of first underresistance thr. R< START

first underresistance threshold trip R< TRIP

delayed start of sec. underres. threshold R<< START

first underresistance threshold trip R<< TRIP

overcurrent threshold start I~> START

overcurrent threshold trip I~> TRIP

undervoltage threshold trip U~< TRIP

overvoltage threshold trip U~> TRIP

del.st. first dir. undervoltage threshold U-< START

first dir. undervoltage threshold trip U-< TRIP

del.st. second dir. undervoltage threshold U-<< START

sec. dir. undervoltage threshold trip U-<< TRIP

del.st. first dir. overvolt. threshold U-> START

first dir. overvolt. threshold trip U-> TRIP

del.st. sec. dir. overvolt. threshold U->> START

second dir. overvolt. threshold trip U->> TRIP




first digital input fed IN DIG 1

second digital input fed IN DIG 2

third digital input fed IN DIG 3

min. pulse width t_IMP / / / / / / / /

bistable operation MEMOR

normally energized end relays

normally de-energized end relays

normally energized end relays / not to be allocated

pag. 34


tab. E

CONTROL MATRIX DIGITAL

INPUTS

DESCRIPTION FUNCTION 1 2 3

input enabled by normal de-energizing

first underres. threshold trip lock BLOC. R<

sec. underres. threshold trip lock BLOC. R<<

overcurrent threshold trip lock BLOC. I~>

overvoltage threshold trip lock BLOC. U~>

undervoltage threshold trip lock BLOC. U~<

first dir. underv. threshold trip lock BLOC.U-<

sec. dir. underv. threshold trip lock BLOC.U-<<

first dir. overv. threshold trip lock BLOC.U->

sec. dir. overv. threshold trip lock BLOC.U->>




switching to spare settings SETTINGS SWITCH / /

reset LED's and output relays RESET (LED+Xmem) / /

/ not to be allocated

pag. 35


tab. F

TABLE OF SETTINGS

DESCRIPTION FUNCTION MAIN

ON OFF VALUErated frequency fn

direct voltage range IN_U-

direct rated voltage Un-

first underresistance threshold R<

starting signalling delay R< tstart

trip delay R< t1

second underresistance threshold R<<

starting signalling delay R<< tstart

trip delay R<< t2

overcurrent threshold I~>

starting signalling delay I~> tstart

trip delay I~> t3

first dir. undervoltage threshold U-<

starting signalling delay U-< tstart

trip delay U-< t4

second dir. undervoltage threshold U-<<

starting signalling delay U-<< tstart

trip delay U-<< t5

first dir. overvoltage threshold U->

starting signalling delay U->> tstart

trip delay U->> t6

second dir. overvoltage threshold U->>

starting signalling delay U->> tstart

trip delay U->> t7

min. pulse width of end relays t_imp

additional timer t_X1



fault recorder trigger

fault recorder pretrigger delay

SPARE

ON OFF VALUE/ / /

/ / /

/ / /

/ / /

/ / /

/ / /

/ / /

/ / /

/ / /

settings: MAIN timed LCD backlighting: ON

settings: SPARE timed LCD backlighting: OFF

/ not to be allocated: the same settings asthe MAIN ones apply

pag. 36


APPENDIX A - Network data exchange

DESCRIPTION DIRECTION TIMING

Identificationcommercial name relay--> centre ARplant identifier relay--> centre ARdirect voltage range relay--> centre AR

Setting data (main and spare)settings in use relay--> centre--> relay ARdate of last change relay--> centre--> relay ARtime of last change relay--> centre--> relay ARlanguage in use relay--> centre--> relay ARrated frequency relay--> centre--> relay ARdirect rated voltage relay--> centre--> relay ARLCD setting relay--> centre--> relay ARmin. pulse width of end relay relay--> centre--> relay ARtimer t_X1 delay relay--> centre--> relay ARtimer t_X2 delay relay--> centre--> relay ARtimer t_X3 delay relay--> centre--> relay ARfirst underresistance threshold included/excluded relay--> centre--> relay ARfirst underresistance threshold value relay--> centre--> relay ARfirst underresistance threshold starting delay relay--> centre--> relay ARtrip delay per first underresistance threshold relay--> centre--> relay ARsecond underresistance threshold included/excluded relay--> centre--> relay ARsecond underresistance threshold value relay--> centre--> relay ARsecond underresistance threshold starting delay relay--> centre--> relay ARtrip delay for second underresistance threshold relay--> centre--> relay ARovercurrent threshold included/excluded relay--> centre--> relay ARovercurrent threshold value relay--> centre--> relay ARovercurrent threshold starting delay relay--> centre--> relay ARovercurrent threshold trip delay relay--> centre--> relay ARfirst dir. undervoltage threshold included/excluded relay--> centre--> relay ARfirst dir. undervoltage threshold value relay--> centre--> relay ARfirst dir. undervoltage threshold starting delay relay--> centre--> relay ARtrip delay for first dir. undervoltage threshold relay--> centre--> relay ARsecond dir. undervoltage threshold included/excluded relay--> centre--> relay ARsecond dir. undervoltage threshold value relay--> centre--> relay ARsecond dir. undervoltage threshold starting delay relay--> centre--> relay ARtrip delay for second dir. undervoltage threshold relay--> centre--> relay ARfirst dir. overvoltage threshold included/excluded relay--> centre--> relay ARfirst dir. overvoltage threshold value relay--> centre--> relay ARfirst dir. overvoltage threshold starting delay relay--> centre--> relay ARtrip delay for dir. overvoltage threshold relay--> centre--> relay ARsecond dir. overvoltage threshold included/excluded relay--> centre--> relay ARsecond dir. overvoltage threshold value relay--> centre--> relay ARsecond dir. overvoltage threshold starting delay relay--> centre--> relay ARtrip delay for second dir. overvoltage threshold relay--> centre--> relay AR

Present measurementsiresistance relay--> centre T e ARdirect voltage relay--> centre T e ARalternating voltage relay--> centre T e ARalternating current relay--> centre T e AR

Maximum measurementsovercurrent relay--> centre AR

pag. 37



Event log recorderdate / time of event relay--> centre VP and ARfirst underresistance threshold start relay--> centre VP and ARfirst underresistance threshold trip relay--> centre VP and ARsecond underresistance threshold start relay--> centre VP and ARsecond underresistance threshold trip relay--> centre VP and ARovercurrent threshold start relay--> centre VP and ARovercurrent threshold trip relay--> centre VP and ARalternating undervoltage threshold trip relay--> centre VP and ARalternating overvoltage threshold trip relay--> centre VP and ARfirst direct overvoltage threshold start relay--> centre VP and ARfirst direct undervoltage threshold trip relay--> centre VP and ARsecond direct undervoltage threshold start relay--> centre VP and ARsecond direct undervoltage threshold trip relay--> centre VP and ARfirst direct overvoltage threshold start relay--> centre VP and ARfirst direct overvoltage threshold trip relay--> centre VP and ARsecond direct overvoltage threshold start relay--> centre VP and ARsecond direct overvoltage threshold trip relay--> centre VP and ARstate of digital input 1 relay--> centre VP and ARstate of digital input 2 relay--> centre VP and ARstate of digital input 3 relay--> centre VP and ARstate of timer tX_1 relay--> centre VP and ARstate of timer tX_2 relay--> centre VP and ARstate of timer tX_3 relay--> centre VP and AR

Statesfirst underresistance threshold trip relay--> centre AV (a.p.)second underresistance threshold trip relay--> centre AV (a.p.)undercurrent threshold trip relay--> centre AV (a.p.)alternating undervoltage threshold trip relay--> centre AV (a.p.)alternating overvoltage threshold trip relay--> centre AV (a.p.)first direct undervoltage threshold trip relay--> centre AV (a.p.)second direct undervoltage threshold trip relay--> centre AV (a.p.)first direct overvoltage threshold trip relay--> centre AV (a.p.)second overvoltage threshold trip relay--> centre AV (a.p.)state of digital input 1 relay--> centre AV (a.p.)state of digital input 2 relay--> centre AV (a.p.)state of digital input 3 relay--> centre AV (a.p.)state of timer tX_1 relay--> centre AV (a.p.)state of timer tX_2 relay--> centre AV (a.p.)state of timer tX_3 relay--> centre AV (a.p.)

Locksfirst underresistance threshold lock centre--> relay AVsecond underresistance threshold lock centre--> relay AVovercurrent threshold lock centre--> relay AVfirst direct undervoltage threshold lock centre--> relay AVsecond direct undervoltage threshold lock centre--> relay AVfirst direct overvoltage threshold lock centre--> relay AVsecond direct overvoltage threshold lock centre--> relay AV

Counterstotal trips of first underresistance threshold relay--> centre ARpartial trips of first underresistance threshold relay--> centre ARtotal trips of second underresistance threshold relay--> centre ARpartial trips of second underresistance threshold relay--> centre ARtotal trips of overcurrent threshold relay--> centre ARpartial trips of overcurrent threshold relay--> centre ARtotal trips of first direct undervoltage threshold relay--> centre ARpartial trips of first direct undervoltage threshold relay--> centre ARtotal trips of second direct undervoltage threshold relay--> centre ARpartial trips of second direct undervoltage threshold relay--> centre ARtotal trips of first direct overvoltage threshold relay--> centre ARpartial trips of first direct overvoltage threshold relay--> centre ARtotal trips of second direct overvoltage threshold relay--> centre ARpartial trips of second direct overvoltage threshold relay--> centre AR

pag. 38



Eventsdate relay--> centre ARtime relay--> centre ARtripped threshold relay--> centre ARresistance value relay--> centre ARrated voltage value relay--> centre AR

Output relayX1 setting relay--> centre--> relay ARX2 setting relay--> centre--> relay ARX3 setting relay--> centre--> relay ARX4 setting relay--> centre--> relay ARX5 setting relay--> centre--> relay AR

LED'sL1 setting relay--> centre--> relay ARL2 setting relay--> centre--> relay ARL3 setting relay--> centre--> relay ARL4 setting relay--> centre--> relay ARL5 setting relay--> centre--> relay ARL6 setting relay--> centre--> relay ARL7 setting relay--> centre--> relay ARL8 setting relay--> centre--> relay AR

Digital inputsinput 1 setting relay--> centre--> relay ARinput 1 setting On HIGH/LOW relay--> centre--> relay ARinput 2 setting relay--> centre--> relay ARinput 2 setting setting On HIGH/LOW relay--> centre--> relay ARinput 3 setting relay--> centre--> relay ARinput 3 setting On HIGH/LOW relay--> centre--> relay AR

Diagnostics relay--> centre AV

ResetLED's centre--> relay ARrelay centre--> relay ARresettable counters centre--> relay ARmaximum measurements centre--> relay AR

Commandsoutput relays enabling centre--> relay AV and ARsettings switch centre--> relay AVsettings switch survival delay centre--> relay AR

Fault recorderfault recorder starting parameters relay--> centre--> relay ARfault recorder pretrigger delay relay--> centre--> relay ARfault recorder trigger command centre--> relay ARfault recorder reset time centre--> relay ARfault recorder data relay--> centre AR

Clockdate centre--> relay Stime centre--> relay Sdate relay--> centre ARtime relay--> centre AR

KEYAR aperiodic messageAV (a.p.) aperiodic variable sent upon high-priority variationAV aperiodic variable transmitted upon variationVP variable upon requestT periodic variable with periods programmable between 1 and 5 sS synchronization

ALSTOM T&D Protection & Côntrole is bound by the foregoing specifications, dimensions and diagrams only after confirmation.

ALSTOM FIR S.p.a. - via Viscardi, 5 - 24016 SAN PELLEGRINO T. - BG - ITALIATel. ++39 0345 28111 - Fax ++39 0345 22590 - Telex 301152 FIR I - E-mail: [email protected]

ABCD

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Documents

display settings

display main settings

change main settings

lcd settings

change spare settings

led settings

overcurrent protection

current settings group196