Procedure #5
This table explains how to troubleshoot Alarm Relay Output failure.
Table 8-9: Troubleshooting Alarm Relay Output Failure
Step What to do How to do it
1 Check the alarm
configuration data. If it
is correct, check the
field wiring.
Reconfigure if necessary.
See Configuration for more information.
2 Check that the
applicable alarm relay
actuates properly
depending on what you
have set at prompt
AxSxTYPE.
If it does, check the
field wiring.
If the alarm type is set for PV, place the controller in
manual mode. Vary the input to raise and lower the
PV around the setpoint. Listen for a click from the
relay as the PV moves in either direction and note
that the proper ALM1 or ALM2 is lit.
EXAMPLE: If the alarm is set for MAN, put the
controller into manual mode. The alarm light is ON.
Put the controller into automatic mode and the alarm
light is OFF.
3 Check the contacts. Make sure the NO or NC contact wiring is correct.
See Installation for more information.
4 Change the relay
and/or the current
output board.
Installation instructions supplied with the new relay
or board.
5 Change MCU board. Installation instructions supplied with the new board.
268
Chapter 8 - Troubleshooting/Service
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