Universal Input Troubleshooting - Trane Tracer MP503 Installation And Operation Manual

Input/output module

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Manual (7 pages)

Installation, operation and maintenance manual (32 pages)

Table Of Contents

Table of Contents

Table 16. Troubleshooting universal inputs using the device plug-in

Step number

Step 1

Connect the Rover service tool to the LonTalk communication link, start the

Rover service tool, and select the Tracer MP503 you are troubleshooting from

the Active Group Tree. The device plug-in for the selected Tracer MP503 will

appear with the Status screen displayed in the workspace.

See the Rover Operation and Programming guide (EMTX-SVX01B-EN) for

more information.

Step 2

On the Inputs tab, check the value of each universal input. For thermistor

inputs, the reading is shown in both degrees (Fahrenheit or Celsius) and

Ohms.

If the input does not show the value you expect, proceed to the next step to

verify the input configuration.

Step 3

Select the Configuration button, then select the Inputs tab. For the universal

input you are troubleshooting, view the Input Type.

If it is not correct, select the correct type from the drop-down list. Select the

Download button, then select the Save button.

If the configuration is correct for the input you are troubleshooting, proceed

to Table 17.

Table 17. Troubleshooting universal inputs using a meter at the module

Step number

Step 1

Perform the initial troubleshooting steps described in Table 13 on page 32

and verify that general board operation is okay.

Step 2

Inspect the wiring. Is there a good connection between the wire and the ter-

minal blocks? Look for shorts or opens. Pay particular attention to wire

splices.

Step 3

What type of universal input are you investigating?

•

For thermistor, proceed to Table 18 on page 36.

•

For binary, proceed to Table 19 on page 36.

•

For 0–20 mA, proceed to Table 20 on page 37.

•

For 0–10 Vdc, proceed to Table 21 on page 37.

CNT-SVX09B-EN