BA488CF-F FOUNDATION Fieldbus Intrinsically Safe Panel . - MTL Inst

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BA488CF-FFOUNDATION fieldbusIntrinsically safePanel mounting displayIssue 15For version 3 instruments withrevision 4.03 firmwareIssue: 1527th March 2019

2CONTENTS1. Description1.1 Documentation1.2 Version 4.03 firmware2. Operation2.1 Controls3. 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 information6. Configuration6.1Display transducer block6.2Screen selection and alarmconfiguration.6.3Default configuration6.4Accessing instrument configurationmenu.6.5Screen selection6.6Alarm configuration6.6.1 Alarm summary6.6.2 Alarm activation6.6.3 Alarm output6.7Display configuration6.7.1 Settings6.7.2 Quick access6.7.3 Access code6.7.4 Status text6.7.5 Last input6.7.6 Keys6.7.7 Code6.7.8 Unit info6.7.9 Defaults6.7.10 Display defaults6.7.11 Interface board defaults6.8Quick access menu4. System Design for Hazardous Area4.1 FISCO Systems4.2 Non FISCO Systems4.3 External switches4.4 Alarm outputs5. Installation5.1 Location5.2 Installation procedure5.3 EMC7. Maintenance7.1Fault finding during commissioning7.2Fault finding after commissioning7.3Servicing7.4Routine maintenance7.5Guarantee7.6Customer comments8. Accessories8.1Tag number8.2FOUNDATION fieldbus InterfaceGuide.Appendix 1FM Approval for use in the USAAppendix 2IECEx certificationThe BA488CF-F is CE marked to show compliance with the European Explosive AtmospheresDirective 2014/34/EU and the European EMC Directive 2014/30/EU

31. DESCRIPTIONThe BA488CF-F FOUNDATION fieldbus displayis an intrinsically safe instrument that can displayup to eight FOUNDATION fieldbus processvariables, together with their units of measurementand tag information.The instrument is buspowered so no additional power supply is required.The instrument’s communications protocol isshown on the rear panel.The ‘-F’ order codesuffix also indicates the protocol but is not shownon the instrument certification label. There is analternative version of the fieldbus display, ordercode BA488CF-P for use on Profibus PA networks.For use in the USA the instrument has intrinsicsafety and nonincendive FM Approval – seeAppendix 1, plus IECEx intrinsic safety approvalfor international applications – see Appendix 2.Housed in a robust 72 x 144 panel mounting DINenclosure, the BA488CF-F FOUNDATION fieldbus display has an IP66 front panel and issupplied with a gasket to seal the joint between theinstrument and the panel.This instruction manual describes revision 3BA488CF-F Foundation fieldbus displays whichwere introduced in January 2019. Revision 3displays have been verified in the FieldComm Labsas compliant with ITK 6.3.1.1 DocumentationThis instruction manual describes system design,conditioning and installation of the BA488CF-FFOUNDATION fieldbus display.For detailedcommissioning information please refer to theFOUNDATION fieldbus Interface Guide that canbe downloaded from the BEKA websitewww.beka.co.ukInstruction manuals for the earlier revision 1 and 2instruments may be downloaded from thesuperseded documentation section of the BEKAwebsite.1.2 Version 4.03 FirmwareUpdated firmware was released in January 2019which includes the following key features:Most of the BA488CF-F display parameters areconfigured on-site via the fieldbus. Screen formatselection and alarm configuration is performedusing an internal menu and the instrument's frontpanel push buttons.11 standard screensUp to eight process variables can be displayedusing the two Input Selector function blocks.Two 4-input Input Selector function blocks:The required Device Description files, which maybe downloaded from either the FieldComm or theBEKA websites, depend upon which BA488CF-FFOUNDATION fieldbus display revision isselected.Eleven selectable standard display screen formatsenable one, two, three, four or eight processvariables, some with bargraphs to be displayed onone screen.The BA488CF-F FOUNDATION fieldbus displaycan be supplied with six optional alarm outputs thatmay be linked to any of the displayed fieldbusvariables.These alarm outputs are locallyactivated from the fieldbus variables and areconfigured via the instrument menu and pushbuttons.They cannot be controlled via thefieldbus.The BA488CF-F 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 AtmospheresDirective 2014/34/EU.Multiple bargraph limitsIndividual input scalingLast variable parameter prevents display ofunused inputs.Fieldbus compliance verified to ITK 6.3Option added to remove status text fromsingle variable screens.The instrument’s firmware version can beestablished using the ‘Unit Info’ function in themain configuration menu – see section 6.7.8 of thismanual.

42. OPERATIONFig 1 shows a simplified block diagram of theBA488CF-F FOUNDATION fieldbus display.When the optional alarms are not fitted, theinstrument only requires a two-wire connection tothe fieldbus.Parameters that cannot be configured via thefieldbus can be configured via the four front panelpush buttons.Menus enable the requiredstandard display screen format to be selected.The optional alarms are locally activated from thefieldbus variables and can only be configured andthe setpoints adjusted using the BA488CF-F pushbuttons. The alarms cannot be configured orcontrolled via the fieldbus.DescriptionFilesfortheBA488CF-FFOUNDATION fieldbus display may bedownloaded from either the FieldComm or from theBEKA associates websites.Fig 1 Simplified block diagram of BA488CF-F2.1 ControlsThe user can scroll through the display screens byoperating the or push buttons. The numberof screens available depends upon how theBA488CF-F display has been configured. If onefieldbus variable per screen has been configured,eight screens will be present; if four fieldbusvariables per screen have been configured, onlytwo screens will be available.Irrespective of the number of fieldbus variablesassigned to the BA488CF-F, the instrument alwayshas provision for displaying eight variables.Unassigned inputs are displayed as zero with abad data warning i.e. light digits on a darkbackground.The Last Input parameter allowsunused inputs to be skipped when scrollingthrough the instrument display screens, seesection 6.7.5.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.

53. INTRINSIC SAFETY CERTIFICATION3.1 ATEX certificateThe BA488CF-F has been issued with EC-TypeExamination Certificate by Notified Body IntertekTesting and Certification Ltd (ITS) which has beenused to confirm compliance with the EuropeanATEX Directive 2014/34/EU. The instrument bearsthe Community 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.In the unlikely event of installation in a Zone 0potentially explosive atmosphere, the BA488CF-FFOUNDATION fieldbus display shall beinstalled such that even in the event of rareincidents, an ignition source due to impact orfriction between the aluminium enclosure at therear of the instrument mounting panel andiron/steel is excluded.This manual describes installations which conformwith IEC 60079-14 Electrical installations design,selection and erection. When designing systemsfor installation outside the UK, the local Code ofPractice should be consulted.3.3 Fieldbus connectionThe BA488CF-F FOUNDATION fieldbus displayis powered and communicates via the fieldbus,which is connected to terminals 1 and 2. Theseterminals comply with the Fieldbus IntrinsicallySafe Concept (FISCO) defined in IEC 60079-11which simplifies intrinsic safety system design.3.2 Zones, gas groups and T ratingThe BA488CF-F has been issued with EC g that it complies with the requirementsfor Group II Category 1 G Ex ia IIC T4 Ga(Tamb –40 to 60ºC). When connected to asuitable system the BA488CF-F may be installedin:Zone 0explosive gas air mixturecontinuously present.Zone 1explosive gas air mixturelikely to occur in normaloperation.Zone 2explosive 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 hydrogenHaving a temperature classification of:T1450ºCT2300ºCT3200ºCT4135ºCAt an ambient temperature between –40 and 60ºC.Note: the guaranteed operating temperature rangeof the Fieldbus Display is –20 to 60ºCThis allows the BA488CF-F to be installed in allZones and to be used with most common industrialgases.Special conditions for safe use in Zone 0The BA488CF-F may also be connected to nonFISCO compliant fieldbus segments by using theentity concept to assess safety.Terminals 1 and 2 of the BA488CF-FFOUNDATION fieldbus display are not polarisedand have the following safety parameters:UiIiPi 17.5V dc380mA dc5.32WFor 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-FFieldbus Display are:CiLi 1nF8µHTo 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-F may beconfigured so that the front panel push buttonscontinue to function or are disabled.

6Terminals S1 to S7 have the following combinedoutput safety parameters:UoIoPo 14.7V dc146.7mA dc0.58W3.6 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.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:CoLo 0.22µF0.26mHAlthough 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 optional alarm outputs is aseparate galvanically isolated solid state switch.The EC-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 the BA488CFF alarm outputs to be connected to any intrinsicallysafe circuit protected by a certified Zener barrier orgalvanic isolator providing that the outputparameters of each circuit are less than:Uo Io Po 4. SYSTEM DESIGN FOR HAZARDOUSAREAS4.1 FISCO SystemsThe BA488CF-F FOUNDATION fieldbus displaymay be connected to any FISCO compliantfieldbus segment providing that the power supplyor isolator powering the segment can provide25mA required by the BA488CF-F Display.Fig 2 shows a typical fieldbus segment. To complywith FISCO requirements, the power supply,terminators, field devices and the interconnectingcables must conform with IEC60079-11.28V dc200mA0.84WThe maximum equivalent capacitance andinductance of each BA488CF-F alarm output is:CiLi 40nF20µHTo 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.Fig 2 FISCO fieldbus system

74.2 Non FISCO SystemsIf the BA488CF-F FOUNDATION fieldbusdisplay is to be connected to a fieldbus segmentthat does not comply with FISCO requirements,the safety parameters of the power supply and theBA488CF-F must be compared using the entityconcept.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-FFOUNDATION fieldbus display, namely:UiIiPi 17.5V dc380mA dc5.32WThe maximum permitted cable parameters for thefieldbus segment must be reduced by theequivalent internal capacitance Ci and inductanceLi of the BA488CF-F. The BA488CF-F equivalentcapacitance and inductance are very small andmake little practical difference.CiLi Fig 3 External push button switch in safe area4.4 Alarm outputsEach alarm output is a galvanically isolated singlepole solid state switch output as shown in Fig 4.1nF8µHFig 4 Equivalent circuit of each switch output4.3 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 Fieldbus Display. When externalswitches are connected the front panel pushbuttons may be operated in parallel or disabled –see section 6.7.6.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.The outputs are polarised and current will only flowin one direction. Odd numbered terminals shouldbe connected to the positive side of the supply.RonRoff 5 0.7Vgreater than 1M Note: Because of the series protection diode,some test meters may not detect a closed alarmoutputWARNINGThese Alarm Outputs should not be usedfor critical safety applications such as anemergency shut down system.When the BA488CF-F FOUNDATION fieldbusdisplay is disconnected from the fieldbus, or thefieldbus is de-energised all the alarm outputs willopen irrespective of how they have beenconfigured.

85. INSTALLATION5.1 LocationThe BA488CF-F FOUNDATION fieldbus displayis housed in a robust aluminium enclosure with atoughened glass window mounted in a Noryl bezel.The front of the instrument provides IP66protection and a gasket seals the joint between theinstrument enclosure and the panel.Theinstrument may be installed in any panel providingthe environmental limits shown in the specificationare not exceeded.CAUTIONSpecial conditions apply for installationin Zone 0, see section 3.25.2 Installation Procedurea. Insert the BA488CF-F into the instrumentpanel cut-out from the front of the panel.b. Fix panel mounting clips to opposite sides ofthe instrument and tighten. Recommendedtightening torque is 22cNm (1.95lbf in). Donot over tighten. Four clips are required toachieve an IP66 seal between theinstrument enclosure and the panel.c.Connect the panel wiring to the rearterminal block(s) as shown in Fig 6.Tosimplify installation, the terminals areremovable so that panel wiring can becompleted before the instrument is installed.Fig 5 shows the overall dimensions of theBA488CF-F 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-F liquid crystal display hasmaximum contrast when viewed from directlyahead and slightly below the centre line of theinstrument.Fig 5 BA488CF-F dimensionsFig 6 Installation and terminal connections

95.3 EMCThe BA488CF-F complies with the requirements ofthe European EMC Directive 2014/30/EU. Forspecified immunity all wiring should be in screenedtwisted pairs with the screens connected to thepotential equalising network as recommended inIEC 60079-14.

106. CONFIGURATION6.1 Display transducer blockInadditiontoloadingtheBA488CF-FFOUNDATION fieldbusdisplayDeviceDescription files onto the system host, the eightinputs require individual configuration.Each of the four inputs of the two DisplayTransducer Blocks has the following fieldbusconfigurable parameters:Bargraph MinDefines bargraph lower limitBargraph MaxDefines bargraph higher limitDisplay formatDefines the position of thedisplayed decimal point.Six options are available:Auto4 DP3 DP2 DP1 DP0 DPMax resolution with selecteddisplay format.4 digits on right of decimal point3 digits on right of decimal point2 digits on right of decimal point1 digit on right of decimal pointNo decimal pointZero offsetAdds a positive or negativeoffset to the fieldbus variablebefore it is displayed.Gain factorMultiplies the fieldbus variableby a factor before it isdisplayed.Display (Gain factor x fieldbus variable) OffsetDescriptorDisplayed fieldbus variableidentification. Up to 16characters can be accepted butthe number displayed variesdepending upon the displayscreen selected.UnitsDisplayed units ofmeasurement. Up to 8characters can be accepted,but the number displayedvaries depending upon thedisplay screen selected.IN valueFieldbus value to be displayedIN value status Indicates validity of displayedfieldbus value.6.2 Screen selection and alarm configurationScreen selection and, if fitted, alarm configurationis performed via the four front panel push buttons.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.6.3 Default configurationUnless otherwise requested at the time of ordering,BA488CF-F FOUNDATION fieldbus displays willbe supplied configured as follows:KeysDisplay brightnessDisplay contrastQuick access menuQuick access menu codeConfiguration menuaccess code.ScreenNumber FormatAll alarmsAlarm activationAlarm outputsBargraphLowHighInput scalingZero offsetGain factorStatus textLast inputRevisionBoth100%50%On00000000Single variableAutoDisabledGood data onlyN/C010001On8Revision 3(2 x IS functionblocks)

116.4 Accessing the instrument configurationmenu.Throughout this manual push buttons are shown initalics e.g. P E and legends displayed bythe instrument are shown within inverted commase.g. 'Enter Access Code'. Operating the P and Epush buttons simultaneously accesses the displayconfiguration menu. If the BA488CF-F is notprotected by an access code the main menu willbe displayed. If an access code other than thedefault code 0000 has already been entered, theBA488CF-F will request that the access code beentered.Using the or button set the first digit of thecode which will be flashing. Pressing P will transfercontrol to the next digit, which should be adjusted inthe same way. When all four digits have been set,pressing the E button will enter the access code.If the code is correct the main menu will bedisplayed, if the code is incorrect ‘Invalid Code’ willbe 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, from whicha further selection or adjustment may be made.Operating the E button moves the display back onelevel.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 submenu, 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 has beenset as required, the flashing highlight can be movedto the next digit by operating the P button. When alldigits have been set, operating the E button willenter the ation, the E button should be operated tostep the display back to the main menu. One moreoperation of the E button will then return theBA488CF-F to the operating mode.

126.5 Screen selectionThe BA488CF-F can display up to eight fieldbusvariables. These are identified as IN 1 to IN 8.The fieldbus variable that each one represents isdetermined by the BA488CF-F configuration at thefieldbus system host – see the FOUNDATION fieldbus Interface Guide.One variable vertical bargraphThis 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.Two variables vertical bargraphsOne variableThree variables vertical bargraphsTwo variablesFour variables vertical bargraphsFour variablesEight variables horizontal bargraphsEight variablesOne variable horizontal bargraphTwo variables horizontal bargraphs

136.6 Alarm configurationNote: Alarm menus are only included when theBA488CF-F is fitted with optional alarm outputs.Outputs are locally activated from the fieldbusvariables and are configured via the instrumentmenus and push buttons.They cannot becontrolled via the fieldbus.Each of the six alarms may be linked to any one ofthe eight fieldbus variables displayed by theBA488CF-F.Each alarm output can beconditioned to function as a high or a low alarm, oras a combined high and low alarm. The output canbe conditioned as normally open ‘N/O’, or normallyclosed ‘N/C’ in the non-alarm condition.Irrespective of settings alarm outputs will be openwhen 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.6.6.1 Alarm summaryShows to which fieldbus variable each alarm islinked and how each alarm has been conditionedi.e. high, low, or combined high & low alarm withnormally open or closed output. No adjustmentscan be made in this sub-menu.6.6.2 Alarm activationFieldbus variables that have not been validated aredisplayed 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 fieldbus data, or tooperate irrespective of data validity.6.6.3 Alarm outputThere is a separate sub-menu for each of the sixalarm outputs; these link the alarm to one of thedisplayed fieldbus variables and define the alarmfunction and the setpoints.To link the alarm to a displayed variable, positionthe cursor over the ‘IN n’ field, press P and usingthe 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 nonalarm condition. To change the setting, positionthe highlight over the ‘N/O’ or ‘N/C’ field, press Pand use the or button to toggle the setting.Enter the selection by pressing the E button.Each alarm 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. Placethe highlight over the setpoint to be adjusted andpress P; the flashing digit to be adjusted may thenbe selected by again pressing P. When all thedigits have been adjusted, operating the E buttonenters the value and moves the menu up onelevel.The function of all alarms may be reviewed fromthe alarm summary menu - see 6.6.1.

146.7 Display configuration6.7.1 SettingsThe backlight brilliance and display contrast areadjustable from this sub-menu.6.7.2 Quick AccessThis sub-menu enables the Quick Access Menuwhich is described in sections 2.1 & 6.8 Whenenabled, an operator can adjust the displaycontrast and backlight brilliance without havingaccess to any other conditioning menus.6.7.3 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.6.7.4 Status TextThe two single variable screens 1 and 4 will showthe status of the FOUNDATION fieldbus variableas ‘Good’ or ‘Bad’ if the Status Text function isactivated.6.7.5 Last InputThis function allows the maximum number ofFOUNDATION fieldbus variables to be definedso that unused inputs are skipped when thedisplay is scrolled in the operating mode.6.7,6 KeysThe function of the front panel push buttons maybe transferred to the six optional external pushbuttons, with or without disabling the BA488CF-Ffront panel push buttons. The table below showsthe function of the BA488CF-F front panel and theexternal push buttons for each of the four optionsthat may be selected in the Keys sub-menu.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.6.7.7 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.6.7.8 Unit InfoDisplays the instrument model number and thefirmware version.6.7.9 DefaultsThis function enables the display and interfaceboard factory defaults to be restored.6.7.10 Display DefaultsThis function restores the display defaults definedin section 6.3.CAUTIONExisting settings cannot be recoveredafter this function has been used.6.7.11 Interface Board DefaultsThis function restores the Fieldbus Interface Boardfactory defaults.CAUTIONDo not use this function when theBA488CF-Fisconnectedtoanoperational fieldbus, as communicationwill be terminated.

156.8 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-F will request that theaccess code be entered.The backlight brilliance is adjusted using the and push buttons. Operating the P push buttonwill 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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177. MAINTENANCE7.2 Fault finding after commissioning7.1 Fault finding during commissioningIf a BA488CF-F FOUNDATION fieldbus displayfails to function during commissioning the followingprocedure should be followed:SymptomCauseCheck:No DisplayFieldbus notpowered9 to 17.5Vbetweenterminals 1 & 2.No variablesFieldbus notconfiguredInstrumentconfiguration athostBA488CF-F doesnot have correctprotocolWrong variabledisplayedWrong screenselectedDisplay shows‘?’No backlightDisplayOverrangeBrilliance turneddownIncorrect contrastsettingVariable has‘bad’ statusLow or excessivecontrastDisplayedvariable isinvertedi.e. light digits ondark backgroundDisplayedvariable isflashingBargraph onstandard displayformat is showndottedAssociated alarmhas beenactivatedDisplayedfieldbus variableis outsidebargraph limits ordata is ‘bad’That theBA488CF-Fprotocol is thesame as thefieldbus.i.e. FieldbusFoundation orProfibus PA.Other screens byoperating Up orDown buttonNumber FormatSetting in displaymenuSetting in displaymenuConfigurationand instrumentsupplyingvariableENSURE PLANT SAFETY BEFORESTARTING MAINTENANCELive 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

superseded documentation section of the BEKA website. Most of the BA488CF-F display parameters are configured on-site via the fieldbus. Screen format selection and alarm configuration is performed using an internal menu and the instrument's front panel push buttons. Up to eight process variables can be displayed using the two Input Selector .

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