Table 7-13 Troubleshooting An Ethernet Communications Failure; Table 7-14 Troubleshooting Auxiliary Output Failure - Honeywell UDC2500 Product Manual

Procedure #9
Table 7-13 explains how to troubleshoot a Communications failure

Table 7-13 Troubleshooting an Ethernet Communications Failure

Step
Check the IP address, Subnet
1
Mask address and Gateway
address settings.
2 Check if the Ethernet Connection
is active.
3 Change Ethernet
Communications board.
4 Change Controller
Procedure #10
Table 7-14 explains how to troubleshoot Auxiliary Proportional Output failure
symptoms.
Step
1 Make sure the controller is
configured for Auxiliary Output
and the proper range (4 to 20 or
0 to 20) is configured.
Check the field wiring.
2
Check the output.
3
4 Recalibrate the Auxiliary output.
5 Change Auxiliary Output board.
6 Change Controller
4/07
What to do

Table 7-14 Troubleshooting Auxiliary Output Failure

What to do
UDC2500 Universal Digital Controller Product Manual
How to do it
See the PIE Tool Manual.
Looking into the instrument, there should be steady
green LED. If this is not present, then the
instrument is not seeing a valid Ethernet
connection. See Section 2.7 for wiring diagrams. A
second green LED will blink during actual Ethernet
transactions.
Installation instructions provided with new
board.
How to do it
Make Options Set Up group function prompt
AUX OUT any selection other than NONE. If
this prompt does not show up, check if DIG IN
2 is enabled. If so, then as Auxiliary Ouptut
and Digital Input 2 are mutually exclusive, you
must chose which one of these features you
wish to use.
Make the Options 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.
Change the AUX OUT selection to 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.
Refer to Section 6 - Output Calibration for
details.
Installation instructions provided with new
board.
Troubleshooting/Service
173