Procedure #5 - Current/Time Or Time Current/Proportional; Table 7-9 Troubleshooting Current/Time Or Time/Current Proportional Output Failure - Honeywell UDC3500 Product Manual

7.6.5 Procedure #5 – Current/Time or Time Current/Proportional
Table 7-9 explains how to troubleshoot Current/Time or Time/Current Proportional
Output failure.
Table 7-9 Troubleshooting Current/Time or Time/Current Proportional
Step
Make sure the controller is configured
1
for Time/Current or Current/Time
Proportional output.
Check the field wiring.
2
Check the relay output.
3
4 Check the Current Proportional
Output.
5 Recalibrate the controller.
6 Change Current Output or Relay
board.
10/05
Output Failure
What to do
UDC3500 Universal Digital Controller Product Manual
How to do it
Make Output Algorithm Set Up group function
prompt OUT ALG = TCUR or CURT.
Refer to Section 3 – Configuration.
Make sure the NO or NC contact wiring selection
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 (Loop 1) or OUT3
indicator (Loop 2) on the operator interface.
Contact should change state. 0 % open, 100 %
closed. Listen for a click from the relay when the
OUT1 or OUT3 indicator changes state.
Put the controller into Manual mode and change
the output from 0 % to 100 % (4-20 or 0-20 mA).
Use a DC milliammeter at the rear terminals to
verify the output.
Refer to Section 1 - Output Calibration for details.
Installation instructions supplied with new board.
Troubleshooting/Service
303