Honeywell UDC 3300 사용자 설명서
254
UDC 3300 Controller Product Manual
4/00
Procedure #2
Table 9-9 explains how to troubleshoot Current Proportional Output
failure symptoms.
failure symptoms.
Table 9-9
Troubleshooting Current Proportional Output Failure
Step
What to do
How to do it
1
Make sure the controller is
configured for Current output.
configured for Current output.
Make Algorithm Set Up group function
prompt OUT ALG or OUT2 ALG =
CURRNT.
prompt OUT ALG or OUT2 ALG =
CURRNT.
Refer to Section 3 - Configuration.
2
Check the field wiring.
Output impedance must be less than
or equal to 1000 ohms.
or equal to 1000 ohms.
3
Make sure all the configurable
tuning constants, limits, and
configuration data stored in the
controller are correct. Reconfigure,
if necessary.
tuning constants, limits, and
configuration data stored in the
controller are correct. Reconfigure,
if necessary.
Refer to Section 3 - Configuration to
check all this data and how to
reconfigure.
check all this data and how to
reconfigure.
4
Check the 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.
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 Current Proportional
output.
output.
Refer to Section 8 - Output Calibration
for details.
for details.
6
Change MCU/Output board.
Refer to Table 9-23.