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AC Drive has no display.

Issue:
 AC Drive has no display.

Product Line:
All Altivar drives
 
Environment:
No display
 
Cause:
n/a
 
Resolution:
Measured the input voltages at L1, L2 and L3
Measure the DC bus
Measure the +24v and +10v supplies.
If the DC bus is ok, then could be a problem with the Main Control board and/or the Power Board, of the drive.

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