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Troubleshooting
Industrial Duty Logic Operators
Advanced Troubleshooting: Checking Logic 5.0 Three Phase Motor
The following tests should be performed by a qualifi ed technician. A multimeter will be required.
1) Turn power off to the operator.
2) Locate the motor plug on the POWER BOARD and unplug.
3) Set the multimeter to continuity/ohms. Ω *Certain meters have a setting that beeps when a closed circuit is
detected. This setting is preferred for the test.
4) Using the guide below, check for continuity across the following pins on the motor harness:
a. Place probe between Thermal Protector, Pins 1 and 4. Continuity should be present.
b. Place probe between Motor Winding 1, Pins 14 and 8. Continuity should be present.
c. Place probe between Motor Winding 2, Pins 15 and 7. Continuity should be present.
d. Place probe between Motor Winding 3, Pins 9 and 5. Continuity should be present.
e. Place probe between Motor Winding 4, Pins 6, 11 and 12. Continuity should be present. *Any combination
between Pins 6, 11 and 12, continuity should be present.
5) If the readings are different than the results expected above, the motor will have to be replaced.
123
456
789
10 11 12
13 14 15
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