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Rockwell Automation Publication 20P-TG003B-EN-P - September 2021
17
Component Test Procedures
Chapter 2
Testing the Control and Field Board Connections
1.
Using an ohmmeter, check all input and output wiring on terminals 1…40
on terminal blocks TB1 and TB2 on the control board for a possible short
circuit condition. Repair any short circuit conditions if found.
2.
If an encoder and/or tachometer is used, use an ohmmeter to check all
wiring on the respective terminals for a possible short circuit condition.
Repair any short circuit conditions if found.
3.
Remove the cables from connector XR and XFCD on the control board
and use an ohmmeter to check between all voltage test points and
common on the control board for possible short circuit conditions. The
ohmmeter measurements should be greater than 200 k
. If any low
resistance measurements are found, replace the control board.
4.
Using an ohmmeter, measure between pins 1 and 2 and pins 3 and 2 on the
XFCD cable connector. The resistance measurement for both tests should
be greater than 200 k
. If a lower resistance value is measured, replace
field board.