Error 681.x Internal supply

681.x Internal supply

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Description

Induction oven generator

Internal monitoring of the IGBT driver power supply indicates undervoltage.
The seven-segment display of the inductor indicates '4'.

Remedy

The 15V voltage is dissipated from the enabling signals Enable1 (EN1 to EGND1) and Enable2 (EN2 to EGND2). This could be caused by short-time drops in the enabling voltage. If the fault occurs again after restarting the device an internal problem is likely, and the device must be replaced (the operation of an individual output stage may still be possible).

All machine errors