33
Phenomenon
Motor vibration
too great
Motor too hot
Timing output
not output
Remedial action
Check the linkage state for the motor’s
output shaft and load shaft.
If changing the running pulse speed
reduces the vibration, the motor is
resonating. Either change the speed
setting of the running pulse or reduce
the step-angle setting.
Turn the motor-run current-adjustment
controls slightly in the counter-
clockwise direction in order to lower
the current. Vibration will increase if
the motor’s output torque is too large
for the load.
Either shorten the motor’s run time or
lengthen the stop time. Hold the
motor case temperature to a
maximum of 212°F (100°C).
Switch the current check switch to
“OFF.”
Adjust the motor stop current to a
maximum of one-half the value of the
run current.
Switch the C/S input to “ON” when
timing output is being output.
Possible cause
The centers of the motor’s
output shaft and load shaft are
not aligned.
Motor resonating
Load too small
Motor run time too long
Current check switch switched to
“ON”
Motor-stop current adjustment
too high
C/S (step-angle switching) input
switched to “ON” when timing
output is not being output
