Sequence For Finding Serious Electrical Errors - HEIDENHAIN iTNC 530 HSCI Service Manual

6.3 Sequence for finding serious electrical errors

The most serious electrical error on a machine tool is a ground fault or short-circuit!
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A ground fault or short circuit may be suspected in case of:
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DANGER
Ground faults or short circuits have to be eliminated before further investigation is possible!
Blowing fuses (semiconductor fuses for the primary voltage supply in the electrical cabinet of the
machine tool or in a sub-distribution)
Error messages, such as Leakage current in UV 1xx or Overcurrent cutoff
Scorch marks and/or burnt smell
Destroyed units
Note
For detailed descriptions on how to find ground faults/short circuits, refer to the
Service Manual "Inverter Systems and Motors".
HEIDENHAIN Service Manual iTNC 530 HSCI