The modstack error is reported by the output stage of the inverter (Modstack) to control board.
The cause of the error can be detailed by the Sub-ID:
All error lines are linked in the modstack via a logical OR to the error sum. The error with Sub-ID 0 must always occur together with this error and another Sub-ID.
If not there is to be expected with either a signal interference or a faulty hardware.
The modstack reports an error in phase U
The modstack reports an error in phase V
The modstack reports an error in phase W
The modstack reports an over current error
The modstack reports an over temperature error
The modstack reports a dc bus over voltage error
The modstack reports an error in stack 1
The modstack reports an error in stack 2
The modstack reports an error in stack 3
The modstack reports an error in stack 4
The sum of the three phase currents is significantly greater than zero. There are two possible causes:
- There is a ground fault, so that a current is present in the grounding line.
- The current measurement is defective or faulty.
Ein Not-Aus wird durchgeführt.
The error can be acknowledged by an Error-Reset. Depending on the cause of the error (see above) there may be a hardware defect which must be lead to the replacement of the inverter.