Honeywell UDC2500 Procedure #9, Troubleshooting an Ethernet Communications Failure, Procedure #10

Models: UDC2500

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Troubleshooting/Service

Procedure #9

Table 7-13explains how to troubleshoot a Communications failure

Table 7-13 Troubleshooting an Ethernet Communications Failure

Step

What to do

How to do it

1Check the IP address, Subnet Mask address and Gateway address settings.

2Check if the Ethernet Connection is active.

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.

3

Change Ethernet

Installation instructions provided with new

 

Communications board.

board.

4Change Controller

Procedure #10

Table 7-14explains how to troubleshoot Auxiliary Proportional Output failure symptoms.

Table 7-14 Troubleshooting Auxiliary Output Failure

Step

What to do

How to do it

1

Make sure the controller is

Make Options Set Up group function prompt

 

configured for Auxiliary Output

AUX OUT any selection other than NONE. If

 

and the proper range (4 to 20 or

this prompt does not show up, check if DIG IN

 

0 to 20) is configured.

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.

2

Check the field wiring.

Output impedance must be less than or equal

 

 

to 1000 ohms.

3

Check the output.

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.

4Recalibrate the Auxiliary output. Refer to Section 6 - Output Calibration for

details.

5Change Auxiliary Output board. Installation instructions provided with new

board.

6Change Controller

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UDC2500 Universal Digital Controller Product Manual

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Honeywell UDC2500 manual Procedure #9, Troubleshooting an Ethernet Communications Failure, Procedure #10