Table 7-6 Troubleshooting Latching Output Relay Failure; Table 7-7 Troubleshooting Alarm Relay Output Failure - Honeywell UDC2500 Product Manual

Procedure #2
Table 7-6 explains how to troubleshoot Latching Output Relay failure.

Table 7-6 Troubleshooting Latching Output Relay Failure

Step
Make sure all the configurable
1
data stored in the controller is
correct. Reconfigure, if
necessary.
2 Check that the Latching Relay
actuates properly.
3 Check the Latching Relay
jumper position (NO or NC).
Procedure #3
Table 7-7 explains how to troubleshoot Alarm Relay Output failure.

Table 7-7 Troubleshooting Alarm Relay Output Failure

Step
Check the alarm configuration
1
data. If it is correct, check the
field wiring.
Check that the applicable alarm
2
relay actuates properly
depending on what you have set
at prompt AxSxTY.
If it does, check the field wiring.
Check the contacts.
3
4 Change the relay and/or the
current output board.
5 Change MCU board.
What to do
What to do
UDC2500 Universal Digital Limit ControllerProduct Manual
How to do it
Refer to Section 3 - Configuration to check all this
data and how to reconfigure.
Move the setpoint above or below the PV value,
depending on the type of Limit Control configured.
Listen for the click of the relay as the setpoint is
moved above or below the PV.
Refer to Section 2.4 Limit Control and Alarm Relay
Contact Information for Relay Contact information.
How to do it
Reconfigure if necessary.
Refer to Section 3 - Configuration for
details.
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.
Make sure the NO or NC contact wiring is
correct.
Refer to Section 2 - Installation for relay
contact information.
Installation instructions supplied with the
new relay or board.
Installation instructions supplied with the
new board.
Troubleshooting/Service
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