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Description:
Runtime error while switching on the current controller. The offset values for current measurement are calibrated in this phase. The power section is switched on and the motor is supplied with zero voltage. The measured currents were too large for the offset calibration.
Reaction:
Current Offset is set to zero.
Cause/Remedy:
Rotor movement during current measurement calibration:
When using a synchronous motor, the rotor (secondary element) is in motion while the controller is being switched on. As a result, voltage is induced and the current is supplied in the DC bus during the current offset calibration. The measured current is interpreted as offset current.
ACOPOS hardware defect (current measurement, IGBT module, IGBT controller).
The current offset calibration during active power stage can be deactivated by setting the Bit5 in parameter MOTOR_TEST_MODE.