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MODEL 1000
SEP 2005
APPENDIX C
GUIDE TO TRANSIENT PROTECTION MODULES
This Appendix provides a field service guide to the transient protection modules (TPMs) installed
on the Terminal Board for Field Wiring (TB) of the Gas Chromatograph Controller.
This Appendix is organized as follows:
Purpose of the Transient Protection Modules . . . . . . . . . . . . . . . . . . . . . . . . . . See Section C.1
Part Applications, Numbers, and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . See Section C.2
Troubleshooting Transient Protection Modules . . . . . . . . . . . . . . . . . . . . . . . . See Section C.3
C.1
PURPOSE OF THE TRANSIENT PROTECTION MODULES
The field wiring transient protection modules (TPMs) used on the GC Controller prevent the
conduction of potentially damaging, high-voltage, short-duration transient signals into the GC
Controller's internal electronics. The transient signals filtered out by the TPMs originate from
sources that affect the input/output connections of the GC Controller. This includes connections to
stream switching systems, analog and digital input/output devices, and serial communications
devices. The transient signals may be caused by the devices themselves, or by environmental
conditions that induce signals through the input/output cabling.
Additionally, the GC Controller was designed to comply with European requirements. Inspections
required for compliance include tests for electrostatic discharge, radiated immunity, electrical fast
surge immunity, conducted RF, and magnetic field immunity.
The tests conform to the
electromagnetic compatibility generic requirements of EN50082-2, "Electromagnetic Compatibility
Immunity Standard; Part 2: Industrial Environment" and EN50081-2, "Electromagnetic
Compatibility - Generic Emission Standard; Part 2: Industrial Environment."
The GC Controller is qualified for the European Compliance Engineered (CE) mark. In fact, the GC
Controller far exceeds many of the minimum requirements for that mark.
C-1
GUIDE TO TRANSIENT PROTECTION MODULES
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Troubleshooting
