Simocom U siemens system having 1fk6 motor is being used for cutting. the motor is failing on fault 504. We are not able to establish the reason. pl help.

 

You may have already checked the SimoCom U help menu on this fault; in case you have not, this is what it means:

504 Measuring circuit error, motor measuring system
Cause - The encoder signal level is too low, faulted (incorrect shielding), or the cable breakage monitoring function has responded.

Remedy:
- Use the original Siemens pre-assembled encoder cables (better screening)
- Check for sporadic interruptions (loose contact, e.g. when the drag cable is being moved)
- For toothed-wheel encoders, check the clearance between the toothed wheel and sensor
- Check the encoder, encoder cables and connectors between the motor and control module
- Check the screen connection at the front panel of the control module (top screw)
- Replace the encoder cables or the control module
- Exchange the encoder or motor

If you have checked on all of the above and have found no errors, contact Siemens Technical Support:
Phone: 1-800-333-7421
E-Mail: [email protected]