9 Troubleshooting and remedial actions
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47
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Phenomenon
Possible cause
Remedial action
The centers of the motor’s
output shaft and load shaft are
not aligned.
Check the connection
condition of the motor output
shaft and load shaft.
Motor resonating
If the vibration decreases
when the operating pulse
speed is changed, it means
the motor is resonating.
Change the operating pulse
speed setting or install a clean
damper (sold separately) to
suppress vibration.
Motor vibration too
great.
Load too small.
Turn the motor operating
current setting switch slightly
in the counterclockwise
direction in order to lower the
current. Vibration will increase
if the motor’s output torque is
too large for the load.
Long continuous operation
time of the motor.
Decrease the operation time
of the motor per session or
increase the standstill time.
Make sure that the motor case
temperature will not exceed
100
°
C (212 °F).
The all windings off input is
set to ON.
Switch all windings off input to
OFF.
Motor too hot.
Motor standstill current
adjustment too high.
Lower the motor standstill
current.
