Table 10-5 Troubleshooting Power Failure Symptoms - Honeywell UDC2300 Product Manual

Procedure #1
Table 10-5 explains how to troubleshoot power failure symptoms.

Table 10-5 Troubleshooting Power Failure Symptoms

Step
Check the AC line voltage.
1
2 Make sure the chassis plugs into
the rear of the case properly.
Check the system for Brown-
3
outs, heavy load switching, etc.,
and conformance to installation
instructions.
Change Main board.
4
Procedure #2
Table 10-6 explains how to troubleshoot Current Proportional Output failure symptoms.
Table 10-6 Troubleshooting Current Proportional Output Failure
Step
1 Make sure the controller is
configured for Current output.
Check the field wiring.
2
Check the output.
3
4 Recalibrate the Current
Proportional output.
Change Main board.
5
Change Controller
6
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What to do
What to do
UDC2300 Controller Product Manual
How to do it
Use a voltmeter to measure the AC voltage
across terminals L1 and L2 on the rear
terminal panel of the controller.
Check the earth ground connection.
Withdraw the chassis and visually inspect the
controller board and the inside of the case.
Refer to Section 2 - Installation.
Installation instructions supplied with new
board.
How to do it
Make Algorithm Set Up group function prompt
OUT ALG = CUR.
Refer to Section 4 - Configuration.
Output impedance must be less than or equal
to 750 ohms.
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.
Refer to Section 9 - Output Calibration for
details.
Installation instructions provided with new
board.
Troubleshooting/Service
109