6. TROUBLESHOOTING
6-1
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6. TROUBLESHOOTING
This chapter describes how to remedy a fault which occurred in your drive unit or motor and the
maintenance and inspection of the drive unit.
NOTICE
If you have found any fault, immediately perform inspection and take action to
remove its cause. If you cannot identify the cause and resolve the malfunction,
contact your sales representative
.
WARNING
At occurrence of an alarm, turn off the operation signal before resetting the alarm.
Resetting the alarm with the operation signal on will restart the motor suddenly. It
can cause injury.
At occurrence of an alarm, immediately turn off the operation signal. Not doing so
may reset the alarm due to power OFF-ON, e.g. instantaneous power failure,
restarting the motor suddenly. It can cause injury.
Contents of This Chapter
Page
6.1 Message Appearing on the Operation Panel 6-2
6.1.1 Protective function activated.............................................................. 6-2
6.1.2 Alarm function activated..................................................................... 6-5
6.1.3 Others................................................................................................ 6-6
6.1.4 Correspondences between digital and actual characters................... 6-6
6.2 Motor operation out of ordinary 6-7
6.3 Noise Malfunctions and Measures 6-8
6.4 Maintenance and Inspection 6-10
6.4.1 Inspection........................................................................................ 6-10
6.4.2 Wear parts....................................................................................... 6-12
6.4.3 Cooling fan replacement method..................................................... 6-13
6.4.4 Drive unit replacement..................................................................... 6-14
6.4.5 Measurement of circuit current ........................................................ 6-15
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