Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 147)

Troubleshooting 9-29
Measure across R36, R73, R110, R147, R184 and R221 located at the
bottom of each leg of the module. The resistance should be 11.3 kohm.
(The two ground connections must be connected to ground, or to each
other if the module has been removed.)
If the values for each leg vary by more than 1%, the voltage sensing
module may need to be replaced. See Renewal Parts listing in
Appendix D, and refer to procedure on page 9-8.
Grounds must be reconnected on the voltage sensing
boards. Failure to do so may result in injury, death or
damage to equipment.
Note: The white high voltage wires must be connected to the correct tap
on each leg of the voltage sensing module. Failure to do so may result in
equipment damage.
The ribbon cable must be connected to J1 only on the voltage sensing
board or the equipment will not function.
4. When repairs are complete, re-assemble all parts, check all fasteners,
and verify all connections are correct and tight. Make sure all barriers
and mechanical parts are in place and secured.
Make sure ground wires from the Voltage Sensing
Module are securely connected to the ground bar in the
low voltage panel. Failure to do so may result in severe
injury or equipment damage.
5. Repeat Thyristor (SCR) resistance checks (page 9-12) and Power
Supply Tests (page 3-7).
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