Table 7-8 Troubleshooting Time Proportional Output Failure - Honeywell UDC2500 Product Manual

Troubleshooting/Service
Procedure #4
Table 7-8 explains how to troubleshoot Time Proportional Output failure.

Table 7-8 Troubleshooting Time Proportional Output Failure

Step
1 Make sure the controller is configured
for Time Proportional output.
Check the field wiring.
2
Check the output.
3
Check relay.
4
5 Change MCU board.
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What to do
UDC2500 Universal Digital Controller Product Manual
How to do it
Make Output Algorithm Set Up group function
prompt OUTALG = RLY or RLYD.
Refer to Section 3 - Configuration .
Make sure the NO or NC contact wiring is correct.
Refer to Section 2 - Installation for details.
Put the controller into Manual mode. Vary the
output above and below the present value.
Observe OUT1 indicator on the operator interface.
Contact should change state. 0 % open, 100 %
closed. Listen for a click from the relay when the
OUT1 indicator changes state.
Change relay.
Installation instructions supplied with the new
board.
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