MSA Chemgard User Manual

Chemgard Infrared Gas Monitor
Table of Contents
TOC - 5
Mounting Your ................................................................................................................................................... B-5
Electrical Connections for the Chemgard Relay Module .............................................................................. B-5
Main Power Connections ............................................................................................................................ B-5
WARNING ............................................................................................................................... B-5
CAUTION ................................................................................................................................. B-5
Communication Cable Connections ........................................................................................................ B-5
CAUTION ................................................................................................................................. B-5
WARNING ............................................................................................................................... B-5
WARNING ............................................................................................................................... B-6
CAUTION ................................................................................................................................. B-6
Operation ..................................................................................................................................................... B-6
Front Panel Indicators ............................................................................................................................. B-6
Chemgard Relay Module Relays ............................................................................................................. B-6
Applying Power ....................................................................................................................................... B-7
Alarm Relay Configuration ...................................................................................................................... B-7
Operation ................................................................................................................................................ B-7
Trouble Relay .......................................................................................................................................... B-7
Horn Operation ............................................................................................................... B-7
Reset Switch ...........................................................................................................................................
B-8
Ma
intenance ................................................................................................................................................................................................... B-8
Troubleshooting Guidelines ..................................................................................................................... B-8
Table B-3. Troubleshooting Guidelines ................................................................................................ B-8
Table B-4. Replacement Parts ............................................................................................................. B-8
Appendix C
RS-232 Output ............................................................................... C-1
Introduction ................................................................................................................................................... C-1
Table C-1. RS-232 Parameters ............................................................................................................. C-1
Table C-2. Information Structure (Chemgard Infrared Gas Monitor) ...................................................... C-1
Table C-3. Information Structure (Chemgard Infrared Gas Monitor) ...................................................... C-1
Table C-4. Data Structure ...................................................................................................................... C-2
Table C-5. Alarm Structure .................................................................................................................... C-2
Table C-6. Alarms and Events ............................................................................................................... C-2
RS-232 Output ................................
.......................................................................................................... C-2
Remote Gas Sampling Channel ................................................................................................................... C-2
Table C-7. Voltage Output Corresponds to Channel .............................................................................. C-3
Password Protection (Remote Display Only) ................................................................................................ C-3
Figure C-1. RS-232 Location............................................................................................................ C-3
Figure C-2. Typical RS-232 Wiring ................................................................................................... C-4
Figure C-3. RS-232 Connector......................................................................................................... C-4
Figure C-4. Access to Switches ....................................................................................................... C-5
Figure C-5. Switch Bank Location .................................................................................................... C-5
Table C-8. Function of Switches ............................................................................................................ C-6
Figure C-6. Password Enabling Switches ........................................................................................ C-6

MSA Chemgard Specifications

General

Brand	MSA
Model	Chemgard
Category	Measuring Instruments
Language	English