7. Troubleshooting
When the motor is not running properly, try to find the problem in the following table. If you still cannot solve the problem, contact
your nearest ORIENTAL MOTOR office.
22
Problem
Motor does not run
Speed does not
change
Motor rotates in an
opposite direction.
Starting is delayed
Reversing is
delayed
Stopping is
delayed
Alarm is output
What to Check
①
Is the power supply connected
correctly?
②
Are the connector connections
secure?
③
Are the CW and CCW inputs on
(low)?
④
Is the speed potentiometer turned
all the way in the counterclockwise
direction?
⑤
Is the alarm signal being output?
⑥
Have you selected the desired
speed setting method?
①
Have you selected the desired
speed setting method?
①
Are you using a gearhead?
①
Is the setting of the acceleration
duration potentiometer other than
"0"?
①
Is the load inertia excessive?
①
Is the setting of the deceleration
duration potentiometer other than
"0"?
②
Is the load inertia excessive?
①
Is there an overload?
②
Does the driver's ambient
temperature exceed 50
℃
?
③
Are direction reversals or start/stops
being repeated in short cycles?
④
Is applied voltage lower than
−
10% of
specification voltage?
⑤
Is the motor cable connection
broken?
Response
Connect the power supply and check to see that the
POWER LED (green) lights.
Insert connectors firmly all the way in.
Turn on (switch to low) the input for the desired direction
of rotation.
Turn the speed potentiometer to the clockwise. (This
applies to both internal and external speed potentiometer.)
Turn off power, correct the problem that caused the alarm,
and turn power back on (be sure that at least 1 minute
has passed since turning power off). The operating status prior
to alarm output will be restored.
Check the speed setting method.
Check the speed setting method.
Some gearhead speed ratios will cause rotation in
the opposite direction to the motor shaft.
Set the acceleration time potentiometer to "0".
Reversing can be delayed if the load inertial is high.
Either turn off (switch to high) the SLOW DOWN input or
set the deceleration time potentiometer to "0".
Check the load inertia.
Check that the load is no greater than the rated load and
no greater than the permissible load inertia.
Use an appropriate cooling method to reduce ambient
temperature to 50
or less.
Try lengthening the operating cycle or reducing the load.
Check the applied voltage.
If there is anything wrong with the motor cable (sensor
signal), the motor will stop. Check for any damage to the
motor cable.
