F7430 fault in siemens sinamics V90 drive indicates Changeover to open-loop torque controlled operation is not possible. This means the drive cannot transition into closed-loop torque control because it is currently operating in an encoderless mode.
Cause:
For encoderless operation, the converter cannot change over to closed-loop torque-controlled operation.
Remedy:
- Do not attempt to change over to closed-loop torque-controlled operation.
- Check the encoder cable connection.
