Rockwell Automation 440R-D22R2, User Manual

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Rockwell Automation Publication 440R-UM013F-EN-P - July 2021 53
Chapter
11
Troubleshooting
This chapter explains a systematic approach to determine the likely cause of
the GSR safety relay being in a faulted state or not operating properly. It
describes the procedures to use to troubleshoot your relay.
Tools Needed
To troubleshoot your GSR safety relay, you need the following tools.
Required Tools
• Medium-sized Screwdriver: For terminal screws, to remove terminal
blocks, and to configure the switches on the front face of the relays.
• Digital Multimeter: To measure signal levels and contact resistance.
Optional Tools
• Oscilloscope: Dual- or four-channel storage scope to view input and
output signals and to capture noise transients.
• Metal Paper Clips: To insert into the terminals and allow connection of
scope probes to terminals.
Follow These Steps
To diagnose the condition of the GSR safety relay, follow the steps in Figure 56
on page 54 .
3 mm (0.12 in.)
0.5 mm (0.02 in.)