Power section fault current / earth fault monitoring
The ready for service of the power section is monitored in the M drive during software controller release. The earth fault current of the power section is monitored in order to detect a motor earth fault. The error message is generated if the fault current exceeds 20% of the permissible peak current of the power section. The error is fatal and leads to immediate shutoff of the drive controller. In this case the drive coasts to a standstill. Renewed release of the drive by the controller is prevented until the cause of the error has been corrected and the error has been acknowledged.
Source and Remedy
The earth-fault can occur in the motor, in the motor cable or in the brake resistor resp. its incoming cable. Find defective device and replace it.