Dräger QuadGard - Dräger Safety - #4

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Untitled table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:9.00pt "Arial", sans-serif; } .font1 { font:10.00pt "Times New Roman", serif; } Page ii QuadGard Installation and Operating Manual. Issue 5. January 1996 4.4 Set alarm trip points.....................................................................................................15 4.5 Set zero........................................................................................................................15 4.5.1 Set zero for 4-20mA channels....................................................................15 4.5.2 Set zero for SE Ex channels........................................................................15 4.6 Set span........................................................................................................................16 4.6.1 Set span for 4-20mA channels....................................................................16 4.6.2 Set span for SE Ex channels........................................................................16 4.7 Save settings................................................................................................................17 5. COMMAND MODE...................................................................................................................18 5.1 Introduction.................................................................................................................18 5.2 Using command mode.................................................................................................18 5.2.1 Example......................................................................................................19 5.3 Alarm inhibit in command mode.................................................................................19 5.4 Locking the system in command mode.......................................................................19 5.5 Saving configuration settings.......................................................................................20 6. COMMANDS REFERENCE......................................................................................................21 6.1 System Commands ......................................................................................................21 6.2 Channel Commands.....................................................................................................24 6.3 Master Commands.......................................................................................................34 7. MAINTENANCE AND SPARES...............................................................................................39 7.1 Maintenance.................................................................................................................39 7.2 Spares...........................................................................................................................39 APPENDIX 1: SYSTEM FAULTS.................................................................................................40 APPENDIX 2: SPECIFICATIONS.................................................................................................41 A2-1 Operating conditions.................................................................................................41 A2-2 Alarm relays..............................................................................................................41 A2-3 Display resolution.....................................................................................................41 APPENDIX 3: RELAY LATCH MODES.......................................................................................42 APPENDIX 4: CABINET DIMENSIONS FOR IP54 VERSION (WHITE)...................................43 APPENDIX 5: CABINET DIMENSIONS FOR IP65 VERSION (BLUE)......................................44 APPENDIX 6: CONNECTION DIAGRAMS.................................................................................45 A6-1 General arrangement.................................................................................................45 A6-2 Power Supply board..................................................................................................46 A6-3 Internal layout - Channel Boards..............................................................................47 A6-4 Two-wire 4-20mA measuring head connections......................................................48 A6-5 Three-wire 4-20mA measuring head connections....................................................49 A6-6 Polytron Ex and IR Ex connections..........................................................................50 A6-7 Polytron SE Ex pellistor head connections...............................................................51 A6-8 Two-wire 4-20mA measuring head connections via zener barrier...........................52 APPENDIX 7: COMMANDS SUMMARY....................................................................................54