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Issue: 8

May 2006

BA488CF

Intrinsically safe

Panel mounting

Fieldbus Display

Issue: 8

Содержание BA484DF

Страница 1: ...Issue 8 8th May 2006 BA488CF Intrinsically safe Panel mounting Fieldbus Display Issue 8...

Страница 2: ...6 3 4 Units 6 3 5 Alarms 6 3 5 1 Alarm Summary 6 3 5 2 Alarm Activation 6 3 5 3 Alarm Output 6 3 6 Display 6 3 6 1 Settings 6 3 6 2 Quick Access 6 3 6 3 Access Code 6 3 7 Keys 6 3 8 Code 6 3 9 Unit In...

Страница 3: ...88CF These switch inputs may also be used for returning the status of plant contacts The Fieldbus Display can be supplied with six optional alarm outputs that may be linked to any of the displayed fie...

Страница 4: ...Profibus web sites or from the BEKA associates web site at www beka co uk Fig 1 Simplified block diagram of BA488CF 2 1 Controls The user can scroll through the display screens by operating the Up or...

Страница 5: ...The BA488CF Fieldbus Display is powered and communicates via the fieldbus which is connected to terminals 1 and 2 These terminals comply with the Fieldbus Intrinsically Safe Concept FISCO defined in...

Страница 6: ...m output is Ci 40nF Li 20 H To determine the maximum permissible cable parameters Ci and Li must be subtracted from the maximum cable capacitance and inductance specified by the system certificate of...

Страница 7: ...ble of withstanding a 500V rms insulation test to earth for one minute Most industrial push buttons and wiring satisfy these requirements Although the allowable cable parameters are large it is recomm...

Страница 8: ...he instrument secured with four panel mounting clips The BA488CF liquid crystal display has maximum contrast when viewed from directly ahead and slightly below the centre line of the instrument Fig 5...

Страница 9: ...with the requirements of the European EMC Directive 89 336 EEC For specified immunity all wiring should be in screened twisted pairs To prevent circulating currents cable screens should only be earthe...

Страница 10: ...sing the Up or Down button set the first digit of the code which will be flashing Pressing P will transfer control to the next digit which should be adjusted in the same way When all four digits have...

Страница 11: ...Four variables vertical bargraphs 6 3 2 Input Settings Only included in Profibus PA and Fieldbus Foundation Revision 1 instruments Omitted from Fieldbus Foundation Revision 2 instruments because these...

Страница 12: ...can contain up to sixteen alphanumeric characters This menu allows these tags to be entered After selecting the required variable the tag legend is entered character by character using the Up and Down...

Страница 13: ...see 6 3 5 1 6 3 6 Display 6 3 6 1 Settings The backlight brilliance and display contrast are adjustable from this sub menu 6 3 6 2 Quick Access This sub menu enables the Quick Access Menu which is de...

Страница 14: ...that the fieldbus function blocks selected are supported by the system host To change the BA488CF F revision highlight the required revision in the Restore Defaults menu and follow the screen prompts...

Страница 15: ...15...

Страница 16: ...ints Bargraph on standard display format is shown dotted Displayed fieldbus variable is outside bargraph limits or data is bad Bargraph limits see section 6 3 2 8 2 Fault finding after commissioning E...

Страница 17: ...ult this guide if one of the nine standard display screens is being used The guide may be requested from the BEKA sales office or downloaded from the BEKA web site at www beka co uk 9 3 Fieldbus Inter...

Страница 18: ...2 Fieldbus Connection 3 3 Foundation 1 2 Interface Guide 9 3 Revisions 1 2 6 3 10 3 FISCO 3 3 4 1 FM Approval Appendix 1 Gas groups 3 2 Appendix 1 2 Guarantee 8 5 IECEx Certification Appendix 2 Input...

Страница 19: ...comply with the requirements for a FISCO Field Device specified in IEC60079 27 The intrinsically safe circuits shown in Figs 2 and 3 of this manual may therefore be used for installations in the USA...

Страница 20: ...BA484DF and BA488CF Entity Parameters Terminals 1 2 Ui 17 5V Uo 0 Ii 380mA dc Io 0 Pi 5 32W Po 0 Ci 1nF Li 8 H These terminals comply with The Intrinsically Safe Concept FISCO defined by IEC 60079 27...

Страница 21: ...galvanic Ccable Ci Lcable Li Ccable Ci Lcable Li Ccable Ci Lcable Li Intrinsically Safe Systems for Hazardous Classified Locations and the National Installation shall be in accordance with ANSI ISA RP...

Страница 22: ...following table When installed in a hazardous classified location the BA484DF Fieldbus Display Any metallic or plastic cable gland or conduit hub that provides SSTG 1 STG 1 STAG 1 Permitted gland or...

Страница 23: ...provide energy to the system except a leakage current of 50 A for each connected device Separately powered equipment needs galvanic isolation to ensure the intrinsically safety Fieldbus circuit remain...

Страница 24: ...PTIONAL ALARM A8 A5 OPTIONAL ALARM A6 A3 OPTIONAL ALARM A4 A1 OPTIONAL ALARM A2 S6 S5 S4 S3 S2 S1 SEE NOTE 5 OPTIONAL EXTERNAL SWITCHES BA484DF and BA488CF Maximum input and output parameters Terminal...

Страница 25: ...panel thickness should be 2mm 0 08inches Steel 3mm 0 12inches Aluminium Outside panel finish should be smooth free from particle inclusions runs or build up around cut out Panel cut out should be 66...

Страница 26: ...II and III Class I Class Any metallic or plastic cable gland or conduit hub that provides the required environmental protection SSTG 1 STG 1 STAG 1 Crouse Hinds Myler hubs CMCXAA050 MCR050 MCX050 Per...

Страница 27: ...allowed to provide energy to the system except a leakage current of 50 A for each connected device Separately powered equipment needs galvanic isolation to ensure the intrinsically safety Fieldbus ci...

Страница 28: ...e following certification code and marking For gas Ex ia IIC T4 Ta 40o C to 60 o C The specified intrinsic safety parameters are identical to the ATEX parameters and confirm that terminals 1 2 comply...