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Troubleshooting
Error code 45, MOTOR NOT FOLLOWING
This error code is generated by the motor control. The motor control must
always receive information on the rotation of the motor from the tacho
sensor in order to rotate. If the tacho sensor is not working, the motor can
rotate for max. 10 seconds during the starting process. After this period,
the ”MOTOR NOT FOLLOWING” error code will be activated.
Reasons for this code being activated can be:
• Break in the cables between the tacho sensor and the motor control
• Break in connectors in tacho cables
• Break in one of the phases to the motor (cables or connectors). This
error can be suspected if the motor does not rotate for 10 seconds (the
motor will not start with only two phases).
• Error in tacho generator
• Error in tacho circuits in the motor control
Further information can be obtained by studying the contents of
”FC ERROR LOGGER”. Study the following:
• MOTOR NOT FOLLOWING (specifies how many times error code 45
has occurred)
• LAST ERROR CODE N/8 (shows the 8 latest error codes)
• TACHO CUT-OUT LOW RPM (can give a clue in case of intermittent er
-
rors)
• TACHO CUT-OUT HIGH RPM (can give a clue in case of intermittent
errors)
Action:
• Replace the defective part when troubleshooting is complete.