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Installation & Maintenance Instructions

BA488CF-P

Installation & Maintenance Instructions

BA488CF-PPROFIBUS PA intrinsically safe panel mounting fieldbus display

Reading OfficeCutbush Park, Danehill, Lower Earley,Reading, Berkshire. RG6 4UT. UK.Tel: +44 (0)118 9311188 Email: info@able.co.uk

Aberdeen OfficeUnit 6 Airside Business Park, Kirkhill Industrial Estate, Dyce, Aberdeen. AB21 0GT. UK.Tel: +44 (0)1224 725999Email: ab@able.co.uk

Internet: www.able.co.uke-procurement: www.247able.comRegistered in England No: 01851002VAT No: GB 417 2481 61

Issue: 41st March 2012

BA488CF-PPROFIBUS PA

Intrinsically safePanel mountingFieldbus Display

issue 4

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1. Description1.1 Documentation1.2 Version 3.0 firmware

2. Operation2.1 Controls

3. Intrinsic Safety Certification3.1 ATEX certificate3.2 Zones, gas groups and T rating3.3 Fieldbus connection3.4 External switches3.5 Alarm outputs3.6 Certification label information

4. System Design for Hazardous Area4.1 FISCO Systems4.2 Non FISCO Sysems4.3 External switches4.4 Alarm outputs

5. Installation5.1 Location5.2 Installation procedure5.3 EMC

6. Display & Alarm Configuration6.1 Default configuration6.2 Accessing the display configuration

menus6.3 Configurable functions

6.3.1 Screens (Display format)6.3.2 Input settings6.3.3 Tags6.3.4 Units6.3.5 Alarms

6.3.5.1 Alarm Summary6.3.5.2 Alarm Activation6.3.5.3 Alarm Output

6.3.6 Display6.3.6.1 Settings6.3.6.2 Quick Access6.3.6.3 Access Code6.3.6.4 Status Text6.3.6.5 Last Input

6.3.7 Keys6.3.8 Code6.3.9 Unit Info6.3.10 Defaults

6.3.10.1 Display Defaults6.3.10.2 Interface Board

Defaults.6.3.11 Instrument address

6.4 Quick Access Menu

7. Maintenance7.1 Fault finding during commissioning7.2 Fault finding after commissioning7.3 Servicing7.4 Routine maintenance7.5 Guarantee7.6 Customer comments

8. Accessories8.1 Tag number8.2 PROFIBUS Interface Guide

9. Index

Appendix 1FM Approval for use in the USA

Appendix 2IECEx certification

The BA488CF-P PROFIBUS display is CE marked to show compliance with theEuropean Explosive Atmospheres Directive 94/9/EC

and the European EMC Directive 2004/108/EC

CONTENTS

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1. DESCRIPTIONThe BA488CF-P PROFIBUS Display is anintrinsically safe instrument that can display up toeight fieldbus process variables, together with theirunits of measurement and tag information. Theinstrument is bus powered so no additional powersupply is required.

Order Communication Function Code Protocol Blocks

BA488CF-P PROFIBUS PA Eight Analogueoutputs (8 x AO)

Six Digital inputs(6 x DI)

The instrument’s communications protocol isshown on the rear panel. The ‘-P’ order codesuffix also indicates the protocol but is not shownon the instrument certification label. There is analternative version of the fieldbus display, ordercode BA488CF-F for use on FOUNDATION™fieldbus systems.

Configuration may be performed by either a DPV 0user PRM data download, or by a DPV 1configurator and if required the instrument addressmay be entered via the instrument’s front panelpush buttons. The required GSD files are availablefor downloading from both the PROFIBUS andBEKA websites.

Eleven selectable standard display formats enableone, two, three, four or eight process variables,some with bargraphs to be displayedsimultaneously on one screen.

The six front panel push buttons that control theinstrument display may also be used for returningoperator acknowledgements, thus enabling theBA488CF-P PROFIBUS display to function as asimple operator interface. If larger industrial pushbuttons are required for entering theseacknowledgements, up to six external switchesmay be connected to the BA488CF-P. Theseswitch inputs may also be used for returning thestatus of plant contacts to the host using the DIfunction blocks.

The BA488CF-P PROFIBUS Display can besupplied with six optional alarm outputs that maybe linked to any of the displayed fieldbus variables.These alarm outputs are locally activated from thefieldbus variable and are configured via theinstrument menus and push buttons. They can notbe controlled via the fieldbus.

The instrument has been issued with an EC-TypeExamination Certificate by Notified Body IntertekTesting and Certification Ltd for gas atmosphereswhich has been used to confirm compliance withthe European Potentially Explosive Atmospheres

Directive 94/9/EC.

For use in the USA the instrument has intrinsicsafety and nonincendive FM Approval – seeAppendix 2, plus IECEx intrinsic safety approvalfor international applications – see Appendix 3.

Housed in a robust 72 x 144 panel mounting DINenclosure, the BA488CF-P PROFIBUS display hasan IP66 front panel and is supplied with a gasket toseal the joint between the instrument and thepanel.

1.1 DocumentationThis instruction manual describes system design,conditioning and installation of the BA488CF-PPROFIBUS display. For detailed commissioninginformation please refer to the PROFIBUSInterface Guide that can be downloaded from theBEKA website www.beka.co.uk

1.2 Version 3.0 firmwareThis manual describes BA488CF-P PROFIBUSdisplays employing version 3.0 firmware that wasreleased in July 2010 and is not backwardscompatible with earlier versions.

Version 3.0 firmware provides

Addition of (6 x DI) function blocks to returnswitch status to host.

Fieldbus address entry via instrument pushbuttons.

Addition of DPV 0 configuration

Addition of two standard screens allowingeight fieldbus variables to be simultaneouslydisplayed.

Removal of text display facilities

When using the ▼ or ▲ button to selectinput, or groups of inputs to be displayed,unused inputs can now be skipped.

The instrument’s firmware version can beestablished using the ‘Unit Info’ function in themain configuration menu – see section 6.3.9 of thismanual. Version 3.0 firmware is shown asSW480F-02-300.

For BA488CF-P PROFIBUS displays employingversion 2.0 firmware, please refer to the BA488CFIntrinsically safe field mounting fieldbus displayIssue 10 manual dated 3rd November 2009 whichmay be downloaded from the obsolete productssection of the BEKA website.

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2. OPERATIONFig 1 shows a simplified block diagram of theBA488CF-P PROFIBUS display. When theoptional alarms and external switches are notused, the instrument only requires a two-wireconnection to the fieldbus.

How much of the BA488CF-P PROFIBUS displayconfiguration can be performed via the fieldbusdepends upon the system host. Parameters thatcan not be configured via the fieldbus can be setusing the configuration menu shown in Fig 7 andthe four front panel push buttons.

Fig 1 Simplified block diagram of BA488CF-P

2.1 ControlsThe user can scroll through the display screens byoperating the ▼ or ▲ push buttons. The numberof screens available depends upon how theBA488CF-P PROFIBUS display has beenconfigured and the number of process variablesthat are to be displayed. If one fieldbus variableper screen has been configured and eightvariables are to be displayed, eight screens will bepresent; if two fieldbus variables per screen havebeen configured and six variables are to bedisplayed, three screens will be available.

If enabled, operating the P and ▲ push-buttonssimultaneously activates the Quick Access Menu,allowing the user to adjust the display contrastwithout providing access to any of the otherconfiguration parameters. Additional security maybe provided by an optional access code.

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3. INTRINSIC SAFETY CERTIFICATION3.1 ATEX certificateThe BA488CF-P has been issued with EC-TypeExamination Certificate by Notified Body IntertekTesting and Certification (ITS) which has beenused to confirm compliance with the EuropeanATEX Directive 94/9/EC. The instrument bears theCommunity Mark and, subject to local codes ofpractice, may be installed in any of the EuropeanEconomic Area (EEA) member countries. ATEXcertificates are also acceptable for installations inSwitzerland. This manual describes installationswhich conform with EN 60079-14 Electricalsystems design, selection and erection. Whendesigning systems for installation outside the UK,the local Code of Practice should be consulted.

3.2 Zones, gas groups and T ratingThe BA488CF-P has been issued with EC-TypeExamination certificate ITS04ATEX22779Xconfirming that it complies with the requirementsfor Group II Category 1 G Ex ia IIC T4 Ga (Tamb –40 to 60ºC) apparatus. When connected to asuitable system the BA488CF-P may be installedin:

Zone 0 explosive gas air mixturecontinuously present.

Zone 1 explosive gas air mixturelikely to occur in normaloperation.

Zone 2 explosive gas air mixture notlikely to occur, and if it does willonly exist for a short time.

Be used with gases in groups:Group A propaneGroup B ethyleneGroup C hydrogen

Having a temperature classification of:T1 450ºCT2 300ºCT3 200ºCT4 135ºC

At an ambient temperature between –40 and+60ºC.

Note: the guaranteed operating temperature rangeof the Fieldbus Display is –20 to +60ºC

This allows the BA488CF-P to be installed in allZones and to be used with most common industrialgases.

Special conditions for safe use in Zone 0In the unlikely event of installation in a Zone 0potentially explosive atmosphere, the BA488CF-PPROFIBUS fieldbus display shall be installedsuch that even in the event of rare incidents, anignition source due to impact or friction betweenthe aluminium enclosure at the rear of theinstrument mounting panel and iron/steel isexcluded.

3.3 Fieldbus connectionThe BA488CF-P PROFIBUS display is poweredand communicates via the fieldbus, which isconnected to terminals 1 and 2. These terminalscomply with the Fieldbus Intrinsically Safe Concept(FISCO) defined in EN 60079-11, which simplifiesintrinsic safety system design.

The BA488CF-P may also be connected to nonFISCO compliant fieldbus segments by using theentity concept to assess safety.

Terminals 1 and 2 of the BA488CF-P FieldbusDisplay are not polarised and have the followingsafety parameters:

Ui = 17.5V dcIi = 380mA dcPi = 5.32W

For non FISCO compliant segments, the safetyparameters of the power supply or isolatorpowering the fieldbus segment must be equal to orless than these figures.

The maximum equivalent capacitance andinductance at terminals 1 & 2 of the BA488CF-PFieldbus Display are:

Ci = 1nFLi = 8µH

To determine cable parameters for non FISCOcompliant segments, the sum of Ci and Li of all thefield devices should be subtracted from themaximum cable parameters permitted by thedevice powering the fieldbus segment.

3.4 External switchesFor applications requiring operator inputs to bemade by large industrial push buttons, terminalsS1 to S7 facilitate external switches to beconnected to the Fieldbus Display. When externalswitches are connected, the BA488CF-P may beconfigured so that the front panel push buttonscontinue to function or are disabled.

Terminals S1 to S7 have the following combinedoutput safety parameters:

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Uo = 14.7V dcIo = 146.7mA dcPo = 0.58W

The switches and associated wiring connected tothe terminals must comply with the requirementsfor simple apparatus. i.e. the switch must bemechanically activated and have IP20 protection,and both the switch and the wiring must becapable of withstanding a 500V rms insulation testto earth for one minute. Most industrial pushbuttons and wiring satisfy these requirements.

The input safety parameters of terminals S1 to S7are zero, therefore only switches or intrinsicallysafe relays may be connected.

The total maximum permitted cable parameters forall the cables connected to terminals S1 to S7 in aIIC hydrogen gas must be less than:

Co = 0.22µFLo = 0.26mH

Although these parameters are not restrictive, forreliable operation it is recommended that thecables between the fieldbus display and theexternal push buttons are less than 5m long.

3.5 Alarm outputsEach of the six alarm outputs is a separategalvanically isolated solid state switch. TheEC-Type Examination Certificate specifies thatunder fault conditions the voltage, current andpower at each switch output will not exceed thosespecified for simple apparatus in section 5.7 ofIEC 60079-11. This allows each of theBA488CF-P alarm outputs to be connected to anyintrinsically safe circuit protected by a certifiedZener barrier or galvanic isolator providing that theoutput parameters of each circuit are less than:

Uo = 28V dcIo = 200mAPo = 0.84W

The maximum equivalent capacitance andinductance of each BA488CF-P alarm output is:

Ci = 40nFLi = 20µH

To determine the maximum permissible cableparameters, Ci and Li must be subtracted from themaximum cable capacitance and inductancespecified by the system certificate of the circuitconnected to the switch.

3.6 Certification Label InformationThe certification label is fitted in a recess on thetop outer surface of the enclosure. It shows theATEX certification information, a statement that theinstrument is a FISCO Field Device, plus BEKAassociates name and location. Non Europeancertification information may also be included.

4. SYSTEM DESIGN FOR HAZARDOUS AREAS

4.1 FISCO SystemsThe BA488CF-P may be connected to any FISCOcompliant fieldbus segment providing that thepower supply or isolator powering the segment canprovide 25mA required by the BA488CF-PPROFIBUS display.

Fig 2 shows a typical fieldbus segment. To complywith FISCO requirements, the power supply,terminators, field devices and the interconnectingcables must conform with IEC 60079-11.

Fig 2 FISCO fieldbus system

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4.2 Non FISCO SystemsIf the BA488CF-P PROFIBUS display is to beconnected to a fieldbus segment that does notcomply with FISCO requirements, the safetyparameters of the power supply and thePROFIBUS Display must be compared using theentity concept.

The maximum output safety parameters of thedevice powering the fieldbus segment must beequal to, or less than, the input safety parametersof terminals 1 & 2 of the BA488CF-P PROFIBUSdisplay, namely:

Ui = 17.5V dcIi = 380mA dcPi = 5.32W

The maximum permitted cable parameters for thefieldbus segment must be reduced by theequivalent internal capacitance Ci and inductanceLi of the BA488CF-P. The BA488CF-P equivalentcapacitance and inductance are very small andmake little practical difference.

Ci = 1nFLi = 8µH

4.3 External switchesFor applications requiring operator inputs to bemade by large industrial push buttons, terminalsS1 to S7 allow up to six external switches to beconnected to the BA488CF-P PROFIBUS Display.When external switches are connected the frontpanel push buttons may be operated in parallel ordisabled – see section 6.3.7

For installation in a hazardous area the switchesand associated wiring must comply with therequirements for simple apparatus. i.e. the switchmust be mechanically activated and have IP20protection, and both the switch and the wiring mustbe capable of withstanding a 500V rms insulationtest to earth for one minute. Most industrial pushbuttons and wiring satisfy these requirements.

Although the allowable cable parameters are large,it is recommended that the cables are less than 5mlong.

If a safe area switch is to be connected to aFieldbus Display located in a hazardous area, theswitch contact must be transferred via a certifiedintrinsically safe relay or a galvanic isolator havingzero output safety parameters as shown in Fig 3.

Fig 3 External push button switch in safe area

4.4 Alarm outputsEach alarm output is a galvanically isolated singlepole solid state switch output as shown in Fig 4.

Fig 4 Equivalent circuit of each switch output

The outputs are polarised and current will only flowin one direction. Odd numbered terminals shouldbe connected to the positive side of the supply.

Ron = 5 + 0.7VRoff = greater than 1M

Note: Because of the series protection diode,some test meters may not detect a closed alarmoutput

WARNINGThese Alarm Outputs should not be usedfor critical safety applications such as anemergency shut down system.

When the BA488CF-P PROFIBUS display isdisconnected from the fieldbus, or the fieldbus isde-energised all the alarm outputs will openirrespective of how they have been configured.

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5. INSTALLATION

5.1 LocationThe BA488CF-P PROFIBUS display is housed in arobust aluminium enclosure with a toughenedglass window mounted in a Noryl bezel. The frontof the instrument provides IP66 protection and agasket seals the joint between the instrumentenclosure and the panel. The instrument may beinstalled in any panel providing the environmentallimits shown in the specification are not exceeded.

CAUTIONSpecial conditions apply for installation inZone 0, see section 3.2

Fig 5 shows the overall dimensions of theBA488CF-P and the panel cut-out. To achieve anIP66 seal between the instrument enclosure andthe panel, the smaller cut-out must be used andthe instrument secured with four panel mountingclips.

The BA488CF-P liquid crystal display hasmaximum contrast when viewed from directlyahead and slightly below the centre line of theinstrument.

Fig 5 BA488CF-P dimensions

5.2 Installation Procedure

a. Insert the BA488CF-P into the instrumentpanel cut-out from the front of the panel.

b. Fix panel mounting clips to opposite sides ofthe instrument and tighten until theinstrument is secure. Four clips are requiredto achieve an IP66 seal between theinstrument enclosure and the panel.

c. Connect the panel wiring to the rear terminalblock(s) as shown in Fig 6. To simplifyinstallation, the terminals are removable sothat panel wiring can be completed beforethe instrument is installed.

Fig 6 Installation and terminal connections

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5.3 EMCThe BA488CF-P complies with the requirements ofthe European EMC Directive 2004/108/EC. Forspecified immunity all wiring should be in screenedtwisted pairs with the screens connected to thepotential equalising network as recommended inIEC 60079-14.

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6. DISPLAY & ALARM CONFIGURATIONIn addition to loading the BA488CF-P PROFIBUSdisplay GSD files onto the system host anddefining up to eight fieldbus variables that are to bedisplayed, the instrument address, display andalarms, if fitted, have to be configured. Howmuch of this configuration can be performed viathe fieldbus depends upon the system host.Parameters that can not be configured via thefieldbus, may be set via the four front panel pushbuttons.

All the display and alarm configuration functionsare contained in an easy to use menu that isshown in Fig 7. Where necessary the sub-menuscontain on-screen prompts to guide the userthrough each adjustment.

When navigating through the configuration menu,the push-button(s) should be held until the requiredscreen is displayed.

6.1 Default configurationUnless otherwise requested at the time of ordering,BA488CF-P PROFIBUS displays will be suppliedconfigured as follows:

Address 126Keys BothDisplay brightness 100%Display contrast 50%Quick access menu OnQuick access menu code 0000Configuration menu access code. 0000Screen Single variableNumber format AutoAll alarms DisabledAlarm activation Good data onlyAlarm outputs N/CBargraph

Low 0High 100

Input scalingZero offset 0Gain factor 1

Status text OnLast input 8

6.2 Accessing the display configuration menusThroughout this manual the four BA488CF-P pushbuttons used for configuration are identified P E ▼▲, and legends displayed by the instrument areshown within inverted commas e.g. 'Enter AccessCode'.

Operating the P and E push buttonssimultaneously accesses the display configurationmenu. If the BA488CF-P is not protected by anaccess code the main menu will be displayed. Ifan access code other than the default code 0000has already been entered, the BA488CF-P willrequest that the access code be entered.

Using the ▼ or ▲ button adjust the first digit of thecode which will be flashing. Pressing P willtransfer control to the next digit, which should beadjusted in the same way. When all four digitshave been set, pressing the E button will enter theaccess code. If the code is correct the mainmenu will be displayed, if the code is incorrect‘Invalid Code’ will be displayed.

When entering an access code, timeout will occurand the instrument will automatically return to theoperating mode ten seconds after a push buttonwas last operated. In all other menus, timeoutoccurs after sixty seconds.

The structure of the display configuration menu isshown in Fig 7. Navigation is achieved byhighlighting the required function using the ▼ and▲ buttons and then operating the P button todisplay the selected function sub-menu, fromwhich a further selection or adjustment may bemade. Operating the E button moves the displayback up one level.

A flashing highlight indicates that an option oralphanumeric character may be selected using the▼and ▲ buttons and entered using the E button.If only one entry or adjustment can be made in asub-menu, the display will automatically move upone menu level when the adjustment is entered. Ifmore than one adjustment can be made in a sub-menu, the highlight may be moved to the secondvariable using the ▼ or ▲ button after the firstsetting has been entered. Operating the P buttonallows the second variable to be adjusted.

When multiple numeric or alpha characters areadjusted e.g. an alarm setpoint or a tag legend, theadjustment is made one digit at a time using the ▼and ▲ buttons. After the first flashing digit hasbeen set as required, the flashing highlight can bemoved to the next digit by operating the P button.When all digits have been set, operating the Ebutton will enter the setting.

Following completion of the instrumentconfiguration, the E button should be operated tostep the display back to the main menu. One moreoperation of the E button will then return theBA488CF-P to the operating mode.

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6.3 Configurable functionsThis section provides an explanation of eachconfigurable function and should be read inconjunction with Fig 7. See section 6.3.11 forentering the instruments PROFIBUS PA address.

6.3.1 Screens (Display format)The BA488CF-P can display up to eight fieldbusvariables that are identified as IN_1 to IN_8. Thefieldbus variable that each one represents isdetermined by the BA488CF-P configuration at thefieldbus system host - see the PROFIBUSFieldbus Interface Guide which may bedownloaded from the BEKA website.

This sub-menu allows one of eleven standarddisplay formats to be selected. The standardformats contain one, two, three, four or eightfieldbus variables some with bargraphs as shownbelow.

One variable

Two variables

Four variables

Eight variables

One variable + horizontal bargraph

Two variables + horizontal bargraphs

One variable + vertical bargraph

Two variables + vertical bargraphs

Three variables + vertical bargraphs

Four variables + vertical bargraphs

Eight variables + horizontal bargraphs

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6.3.2 Input SettingsEach of the eight fieldbus variable inputs may bescaled before being displayed as shown below.

Display = (Gain x Fieldbus variable) + Offset

The sub-functions for each of the eight inputs are:

‘Offset’ Adds a positive or negative offset tothe fieldbus variable before it isdisplayed.

‘Gain’ Multiplies the fieldbus variable by afactor before it is displayed.

‘Bar Lo’ Defines the bargraph lower limit

‘Bar Hi’ Defines the bargraph higher limit

‘Format’ Defines the position of the displayeddecimal point.Six options are available:

Auto: Max resolution with selecteddisplay format.

4 DP 4 digits on right of decimal point3 DP 3 digits on right of decimal point2 DP 2 digits on right of decimal point1 DP 1 digit on right of decimal point0 DP No decimal point

The total number of display digits availabledepends upon the display screen selected – see6.3.1

Screen Description Digits 1 1 variable 5, 7, 11 or 17* 2 2 variables 7 3 4 variables 5 4 8 variables 5 5 1 variable + H bar 5, 7, 11 or 17* 6 2 variables + H bars 7 7 1 variable + V bar 6 8 2 variables +V bars 4 9 3 variables + V bars 610 4 variables + V bars 411 8 variables + H bars 5

* Font automatically resizes in auto mode

If a negative number is likely to be displayed, adigit must be allocated for the negative sign. If thedisplay overanges all the digits will display ‘?’.

For all options leading zeros, apart from the zero infront of a decimal point, are automaticallysuppressed.

6.3.3 TagsEach of the eight fieldbus variables may bedisplayed with an individual tag that can contain upto sixteen alphanumeric characters. This menuallows these tags to be entered. After selectingthe required variable, the tag legend is enteredcharacter by character using the ▼ and ▲ pushbuttons. Numbers, upper & lower case letters andsymbols are available.

6.3.4 UnitsEach of the eight fieldbus variables may bedisplayed with units of measurement that cancontain up to eight alphanumeric characters. Thismenu allows these units of measurement to beentered. After selecting the required variable, theunit of measurement is entered character bycharacter using the ▼ and ▲ push buttons.Numbers, upper & lower case letters and symbolsare available.

6.3.5 AlarmsAlarm menus are only included when theBA488CF-P is fitted with optional alarmoutputs. Outputs are locally activated from thefieldbus variables and are configured via theinstrument menus and push buttons. Theycan not be controlled via the fieldbus.

Each of the six alarms may be linked to any one ofthe eight fieldbus variables displayed by theBA488CF-P. Each alarm output can beconditioned to function as a high or a low alarm, oras a combined high and low alarm. The outputcan be conditioned as normally open ‘N/O’ ornormally closed ‘N/C’ in the non-alarm condition.Irrespective of settings all alarm outputs will beopen when the instrument is not powered from thefieldbus.

When an alarm is activated, the associatedfieldbus variable display flashes, i.e. alternatesbetween dark figures on a light background andlight figures on a dark background.

There are eight alarm-conditioning sub-menus.

6.3.5.1 Alarm SummaryShows to which PROFIBUS variable each alarm islinked and how each alarm has been conditioned.i.e. high, low, or combined high & low alarm withnormally open or closed output. No adjustmentscan be made via this sub-menu.

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6.3.5.2 Alarm ActivationPROFIBUS variables that have not been validatedare displayed with dark characters on a lightbackground, and some screen formats alsocontain a status indication. This sub-menu allowsthe alarm outputs to be conditioned so that theyonly operate with validated PROFIBUS data, or tooperate irrespective of data validity.

6.3.5.3 Alarm OutputThere is a separate sub-menu for each of the sixalarm outputs; these link the alarm to one of thedisplayed PROFIBUS variables and define thealarm function and the setpoints.

To link the alarm to a displayed variable, positionthe highlight over the ‘IN_n’ field, press P andusing the ▼or ▲ button select the required inputsource. Enter the selection by pressing the Ebutton.

Each alarm output can be N/O or N/C in the non-alarm condition. To change the setting, position thehighlight over the ‘N/O or N/C’ field, press P anduse the ▼ or ▲ button to toggle the setting. Enterthe selection by pressing the E button.

Each alarm output has three functions that can beindependently enabled to condition the output as alow or high alarm, or as a combined low and highalarm, either with or without hysteresis.

The required functions can be individually enabledby positioning the highlight over the Enb/Dis(Enabled/Disabled) column, pressing P andtoggling the function to the required state, thenentering the selection by pressing the E button.

Alarm setpoints are entered digit by digit. Place thehighlight over the setpoint to be adjusted and pressP; the flashing digit to be adjusted may then beselected by again pressing P. When all the digitshave been adjusted, operating the E button entersthe value and moves the menu up one level.

The function of all alarms may be reviewed fromthe alarm summary menu - see 6.3.5.1.

6.3.6 Display6.3.6.1 SettingsThe backlight brilliance and display contrast areadjustable from this sub-menu.

6.3.6.2 Quick AccessThis sub-menu enables the Quick Access Menuwhich is described in sections 2.1 and 6.4 Whenenabled, an operator can adjust the displaycontrast and backlight brilliance without havingaccess to any other conditioning menus.

6.3.6.3 Access CodeDefines a four digit alphanumeric code that mustbe entered to gain access to the Quick AccessMenu. Alpha characters are case sensitive.Default code 0000 allows direct access without acode.

6.3.6.4 Status TextThe two single variable screens 1 and 4 will showthe status of the PROFIBUS variable as ‘Good’ or‘Bad’ if the Status Text function is activated.

6.3.6.5 Last InputThis function allows the maximum number ofPROFIBUS variables to be defined so that unusedinputs are skipped when the display is scrolled inthe operating mode.

6.3.7 KeysThe function of the front panel push buttons maybe transferred to four of the six optional externalpush buttons, with or without disabling theBA488CF-P front panel push buttons. The tablebelow shows the function of the BA488CF-P frontpanel and the external push buttons for each of thefour options that may be selected in the Keys sub-menu.

* Apart from when ‘Internal+Port’ is selected, the Key_Statusdoes not function when the instrument is in the configurationmenu.

The fourth option ‘Internal + Port’ allows the frontpanel push buttons to be used for controlling theBA488CF-P PROFIBUS display and the optionalexternal push buttons to independently enteroperator acknowledgements or controls. Thisoption also allows the status of plant mechanicalswitches to be returned to the host using the DIfunction blocks.

For applications where the instrument is onlydisplaying 1, 2, 3, 4 or 8 variables on a singlescreen, it is recommended that external buttonsare selected but not fitted. This will disable theinstrument front panel buttons, but still provideaccess to the configuration menu, which may beprotected by a security code.

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6.3.8 CodeDefines the four digit alphanumeric code that mustbe entered to gain access to the instrumentconfiguration menus. Alpha characters are casesensitive. Default code 0000 allows direct accesswithout a code.

6.3.9 Unit InfoDisplays the instrument model number and thesoftware version.

6.3.10 DefaultsThis function enables the display and interfaceboard factory defaults to be restored.

6.3.10.1 Display DefaultsThis function restores the display defaults definedin section 6.1.

CAUTIONExisting settings can not be recoveredafter this function has been used.

6.3.10.2 Interface Board DefaultsThis function restores the Fieldbus Interface Boardfactory defaults.

CAUTIONDo not use this function when theBA488CF-P is connected to anoperational PROFIBUS network, ascommunication to the display will beterminated.

6.3.11 Instrument addressEnables the required three digit PROFIBUSaddress to be entered digit by digit using theinstrument’s push buttons.

6.4 Quick Access MenuThe Quick Access Menu allows an operator toadjust the backlight brilliance and the displaycontrast without having access to the otherconfiguration parameters.

The quick access menu is accessed by operatingthe P and ▲ push buttons simultaneously. If theQuick Access Menu is not protected by an accesscode the contrast and brilliance controls will bedisplayed immediately. If an access code otherthan the default code 0000 has already beenentered, the BA488CF-P PROFIBUS display willrequest that the access code be entered.

The display backlight brilliance is adjusted usingthe ▼ and ▲ push buttons. Operating the P pushbutton will transfer control to the display contrastadjustment. When both are set as required,operating the E button will store both settings andreturn the instrument to the operating mode.

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7. MAINTENANCE

7.1 Fault finding during commissioningIf a BA488CF-P fails to function duringcommissioning the following procedure should befollowed:

Symptom Cause Check:No Display Fieldbus not

powered9 to 17.5Vbetween

terminals 1 & 2.

No variables Fieldbus notconfigured

BA488CF-P doesnot have correct

protocol

Instrumentconfiguration at

host

That theBA488CF-P

protocol is thesame as the

fieldbus.i.e. Fieldbus

Foundation orPROFIBUS PA.

Wrong variabledisplayed

Wrong screenselected

Other screens byoperating Up or

Down buttonDisplay shows

‘?????’Display

OverangeNumber Format

see section 6.3.2No backlight Brilliance turned

downSetting in display

menuLow or excessive

contrastIncorrect contrast

settingSetting in display

menuDisplayedvariable isinverted

i.e. light digits ondark background

Variable has‘bad’ status

Configurationand instrument

supplyingvariable

Displayedvariable isflashing

Associated alarmhas beenactivated

Setpoints

Bargraph onstandard displayformat is shown

dotted

Displayedfieldbus variable

is outsidebargraph limits or

data is ‘bad’

Bargraph limitssee section 6.3.2

7.2 Fault finding after commissioning

ENSURE PLANT SAFETY BEFORESTARTING MAINTENANCE

Live maintenance is permitted onintrinsically safe equipment installed in ahazardous area, but only certified testequipment should be used unless a gasclearance certificate is available.

If a BA488CF-P fails after it has been functioningcorrectly, the table shown in section 7.1 may helpto identify the cause of the failure.

If this procedure does not reveal the cause of thefault, it is recommended that the instrument isreplaced.

7.3 ServicingWe recommend that faulty BA488CF-P FieldbusDisplays are returned to BEKA associates or to ourlocal agent for repair.

7.4 Routine maintenanceThe mechanical and electrical condition of theinstrument should be regularly checked. Initiallyannual inspections are recommended, althoughthe inspection frequency should be adjusted to suitthe environmental conditions.

7.5 GuaranteeInstruments which fail within the guarantee periodshould be returned to BEKA associates or our localagent. It is helpful if a brief description of the faultsymptoms is provided.

7.6 Customer commentsBEKA associates is always pleased to receivecomments from customers about our products andservices. All communications are acknowledgedand whenever possible, suggestions areimplemented.

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8. ACCESSORIES

8.1 Tag numberThe BA488CF-P can be supplied with a thermallyprinted tag number on the rear panel. This tagnumber is not visible from the front of theinstrument after installation.

8.2 PROFIBUS Interface GuidesThe BEKA PROFIBUS Interface Guide, which maybe downloaded from the website atwww.beka.co.uk contains configuration informationfor all BEKA PROFIBUS products.

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9. INDEX

Subject Section

Address 6.3.11Alarms 6.3.5

Activation 6.3.5.2Output 3.5; 6.3.5.3; 4.4Summary 6.3.5.1

ATEX Directive 3.1

Backlight 6.3.6.1Bargraph Limits 6.3.2

CertificatesEC-Type Examination 3.1Label 3.6

Configuration menu Fig 7Controls 2.1Code 6.3.8

Decimal points 6.3.2Default settings 6.1; 6.3.10Display 6.3.6

Access code 6.3.6.3Settings 6.3.6.1Quick access 6.3.6.2; 6.4

EMC 5.3External switches 3.4; 4.3; 6.3.7

Fault findingDuring commissioning 7.1After commissioning 7.2

FieldbusConnection 3.3Interface Guide 8.2

FISCO 3.3; 4.1FOUNDATION fieldbus™ 1.0FM Approval Appendix 1

Gas groups 3.2; Appendix 1; 2Guarantee 7.5

IECEx Certification Appendix 2Input Scaling 6.3.2Installation 5.Intrinsic safety 3; Appendix 1; 2

Keys 6.3.7

Last input 6.3.6.4Location 5.1

Appendix 1; 2Maintenance 7.

Routine 7.4

Subject Section

Notified Body 1; 3.1Number Format 6.3.2

Programming 7.Guide 7; 9.2

PROFIBUS PA 1; 2

Quick access menu 6.3.6.2; 6.4

Servicing 8.3Screens (display format) 6.3.1Status text 6.3.6.4

Tags 6.3.3Tag number 8.1T rating 3.2; Appendix 1; 2Terminal numbers Fig 6

Units (of measurement) 6.3.4Unit Info (firmware version) 6.3.9

Version 3.0 firmware 1.2

Zones 3.2; Appendix 1; 2

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APPENDIX 1FM approval for use in USA

A1.0 Factory Mutual ApprovalFor installations in the USA, the BA488CF-P andoptional alarms have been approved intrinsicallysafe and nonincendive by FM Approvals, projectidentification 3022546. Copies of the Certificate ofCompliance are available from BEKA associates.

A1.1 Intrinsic safety approvalThe BA488CF-P is approved to the FM Class 3610intrinsic safety standard for use in indoorhazardous (classified) locations. Installations mustcomply with BEKA associates Control DrawingCI480-17, which is attached to this Appendix,ANSI/ISA RP12.06.01 ‘Installation of IntrinsicallySafe Systems for Hazardous (Classified)Locations’ and with the National Electrical CodeANSI/NFPA70.

The BA488CF-P has a T4 rating at ambienttemperatures up to +60oC and may be used withthe following gases and dusts:

Intrinsic SafetyDivision 1 or 2

Class I Group A & B Group C Group D

Zone 0, 1 or 2Class 1 Group IIC Group IIB Group IIA

The FM entity parameters are identical to theATEX parameters and, like the ATEX certification,confirm that terminals 1 & 2 of the BA488CF-Pcomply with the requirements for a FISCO FieldDevice specified in IEC60079-27. The intrinsicallysafe circuits shown in Figs 2 and 3 of this manualmay therefore be used for installations in the USA,providing the fieldbus power supply, terminators,Zener barriers and galvanic isolators are FMApproved and comply with BEKA associatesControl Drawing CI480-17. The FM Approval alsoallows the BA488CF-P to be connected to non-FISCO systems using the entity concept – seesection 4.2 of this manual.

A1.2 Nonincendive approvalThe BA488CF-P is Class 3611 nonincendiveapproved by Factory Mutual allowing it to beinstalled in Division 2 indoor hazardous (classified)locations without the need for Zener barriers orgalvanic isolators. Installations must comply withthe BEKA associates Control Drawing CI480-18,which is attached to this Appendix, and with theNational Electrical Code ANSI/NFPA70.

The FM Nonincendive Approval also allows theinstrument to be connected to any FNICOcompliant fieldbus segment powered by FMApproved Associated Nonincendive Field WiringApparatus.

The BA488CF-P has a T4 rating at ambienttemperatures up to +60oC and may be used withthe following gases and dusts:

NonincendiveDivision 2

Class I Group A & B Group C Group D

Zone 2Class I Group IIC Group IIB Group IIA

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25

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27

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APPENDIX 2IECEx Certification

A2.0 The IECEx Certification SchemeIECEx is a global certification scheme forexplosion protected products which aims toharmonise international certification standards.For additional information about the IECExcertification scheme and to view the BEKAassociate certificates, please visit www.iecex.com

A2.1 IECEx Certificate of ConformityThe BA488CF-P Fieldbus Display has been issuedwith an IECEx Certificate of Conformity numberIECEx ITS 05.0007X which specifies the followingcertification code and marking:

For gas Ex ia IIC T4 GaTa = -40°C to 60°C

The specified intrinsic safety parameters areidentical to the ATEX parameters and confirm thatterminals 1 & 2 comply with the requirements for aFISCO Field Device specified in IEC 60079-11.

The IECEx certificate may be downloaded fromwww.beka.co.uk, www.iecex.com or requestedfrom the BEKA sales office.

A2.2 InstallationAs the IECEx and ATEX certifications specifyidentical safety parameters and installationrequirements for both are defined byIEC 60079-14, the ATEX installation requirementsspecified in sections 3.2 to 5.3 may also be usedfor IECEx installations. The local code of practiceshould also be consulted.

Special conditions for safe use in Zone 0In the unlikely event of installation in a Zone 0potentially explosive atmosphere, the BA488CF-PPROFIBUS fieldbus display shall be installedsuch that even in the event of rare incidents, anignition source due to impact or friction betweenthe aluminium enclosure at the rear of theinstrument mounting panel and iron/steel isexcluded.