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258 UDC 3300 Controller Product Manual 4/00
Procedure #6
Table 9-13 explains how to troubleshoot Alarm Relay Output failure.
Table 9-13 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.
Refer to Section 3 - Configuration for
details.
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
MANUAL, 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 field wiring. Make sure the NO or NC contact
wiring is correct on the alarm output
terminals.
Refer to Section 2 - Installation for
details.
4
Change MCU/Output board. Refer to Table 9-23.