Hello,

I have a machine running on sinumerik 840c with simdrive 611A system.

The main spindle drive gives "f9"  fault. Ee check the encoder with the oscilloscope it is ok. Also we check the encoder cable connectivity is also ok. We replace the drive controle card with another used one, but the fault is still appear. Aloso we can monitor the encoder position from the simodrive lcd correctly.

I would like to ask if the encoder require some sort of position calibration with the motor, because we change the original angle of the encoder

Encoder part number : ern 1387025

Drive control card part number : 6sn 1121 0ba12 0aa0

Closed cause question posted twice.

The second thread with the subject Simodrive 611 f9 fault is published within the conference SIMODRIVE Converter system.