Honeywell UDC3500 Product Manual page 312

Troubleshooting/Service
Step
Third Current Output: Test for
3c
operation.
Check the output.
4
Restore Factory Calibration
5
6 Field Calibrate the output.
7 Change Current Output board.
298
What to do
UDC3500 Universal Digital Controller Product Manual
How to do it
Change Options Set Up group function prompt
CUR3 OUT = OUTPUT
Make the Current #3 Options Set up group
function prompt CO RANGE = 4–20
Go to Step 4
Put the controller into Manual mode and
change the output via the front keyboard from
0 % to 100 %. Use a DC milliammeter at the
rear terminals for the output being diagnosed
to verify the output.
Output works correctly: Return the controller
to its original configuration and check output
again.
Output does not work correctly: Go to Step 5.
For the output being diagnosed, change the
CO RANGE prompt from its present setting to
its other setting. Exit the setup group and then
return and change CO RANGE back to its
previous setting.
Output works correctly: Finished
Output does not work correctly: Go to Step 6.
Refer to Section 1 - Output Calibration for
details.
Output works correctly: Finished
Output does not work correctly: Go to Step 7.
Installation instructions provided with new
board.
10/05