Table 7-5 Troubleshooting Power Failure Symptoms; Table 7-6 Troubleshooting Current Output Failure - Honeywell UDC3200 Product Manual

Procedure #1
Table 7-5 explains how to troubleshoot power failure symptoms.

Table 7-5 Troubleshooting Power Failure Symptoms

Step
Check the AC line voltage.
1
2 Make sure the chassis plugs
into the rear of the case
properly.
3 Check the system for Brown-
outs, heavy load switching, etc.,
and conformance to installation
instructions.
Change Power board.
4
Procedure #2
Table 7-6 explains how to troubleshoot Current Output failure symptoms.
Step
1 Make sure the controller is
configured for Current output
and the proper range (4 to 20 or
0 to 20) is configured.
2 Check the field wiring.
Check the output.
3
4 Recalibrate the Current
Proportional output.
5 Change Current Output board.
Change Controller
6
12/04
What to do

Table 7-6 Troubleshooting Current Output Failure

What to do
UDC3200 Universal Digital 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 Output Set Up group function prompt
OUT ALG = CUR.
Make the Output Set UP group function
prompt CRANGE = 4–20 or 0–20 per your
application.
Refer to Section 3 - Configuration.
Output impedance must be less than or equal
to 1000 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 6 - Output Calibration for
details.
Installation instructions provided with new
board.
Troubleshooting/Service
161