Troubleshooting/Service
12/00 UDC2300 Controller Product Manual 111
Procedure #4
Table 10-8 explains how to troubleshoot Current/Time or Time/Current Proportional
Output failure.
Table 10-8 Troubleshooting Current/Time or Time/Current Proportional
Output Failure
Step What to do How to do it
1
Make sure the controller is configured
for Time/Current or Current/Time
Proportional output.
Make Output Algorithm Set Up group function
prompt OUT ALG = TCUR or CURT.
Refer to Section 4 – Configuration.
2
Check the field wiring. Make sure the NO or NC contact wiring selection is
correct.
Refer to Section 2 - Installation for details.
3
1. Check the output (control) relays
jump position.
2. Check the relay output.
1. Refer to Section 2 – Installation for relay
jumper placement and relay contact
information.
2. Put the controller into Manual mode. Vary the
output above and below the present value.
Observe OT indicator on the operator
interface.
4
Check the Current Proportional
Output.
Put the controller into Manual mode and change
the output from 0 % to 100 % (4-20 mA). Use a DC
milliammeter at the rear terminals to verify the
output.
5
Recalibrate the controller. Refer to Section 9 - Output Calibration for details.
6
Change Main board. Installation instructions supplied with new board.
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