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שאלות נפוצות
What can cause an OC3P fault on the ATV21 and ATV212 drives?

Issue:
S-Flex 212 drive is going into 0C3P fault on power up.  What can cause this to happen?

Product Line:
Altivar 21, 212, S-flex

Environment:
All

Cause:
Drive is detecting a ground short or a motor short circuit on the output of the drive.

Resolution:
OC3P means you are getting a ground fault.  Its a short circuit  or ground fault during constant speed operation.

Troubleshooting Tips:
-Try turning off the OPL F605= 0 and running the drive open circuit at 20hz 40hz and 60hz. Using a digital true RMS meter, measure output voltage from the drive (phase to phase) to see if they are balanced at each frequency.
If the drive's output voltages are ok,:
-Try dropping the motor leads and megger out the motor and cables with a 1KV megger.
Check your grounding connections
- Double-check all of your motor parameters settings in the drive. See the article on basic programming for assistance.

שניידר אלקטריק ישראל

What can cause an OC3P fault on the ATV21 and ATV212 drives?

Issue:
S-Flex 212 drive is going into 0C3P fault on power up.  What can cause this to happen?

Product Line:
Altivar 21, 212, S-flex

Environment:
All

Cause:
Drive is detecting a ground short or a motor short circuit on the output of the drive.

Resolution:
OC3P means you are getting a ground fault.  Its a short circuit  or ground fault during constant speed operation.

Troubleshooting Tips:
-Try turning off the OPL F605= 0 and running the drive open circuit at 20hz 40hz and 60hz. Using a digital true RMS meter, measure output voltage from the drive (phase to phase) to see if they are balanced at each frequency.
If the drive's output voltages are ok,:
-Try dropping the motor leads and megger out the motor and cables with a 1KV megger.
Check your grounding connections
- Double-check all of your motor parameters settings in the drive. See the article on basic programming for assistance.

שניידר אלקטריק ישראל

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