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This error is a collective message concerning all frequency converters in the welder.


Issue

This error is a collective message concerning all frequency converters in the welder.

Remedy

1. Open the control cabinet.
2. Someone should observe the displays of the various frequency converter drives
3. As soon as the error occurs, he should observe which drive has which error code. 
    In an error situation, one drive will show an error immediately. The others will show the error under voltage UP after their power supply dropped. 
4. You can determine what caused the problem using the drive converter manual.