Oriental motor DSCD90EC - Troubleshooting Common Issues

Troubleshooting
−33−
9 Troubleshooting
During motor operation, the motor or speed controller may fail to function properly due to an improper rotation speed
setting or wiring. When the motor cannot be operated properly, refer to the contents provided in this chapter and take
appropriate action.
If the problem persists, contact your nearest Oriental Motor sales oce.
Note
Certain items must be checked with the power on. Perform inspections carefully not to touch the live part
such as connection part of the motor and speed controller.
Possible cause Remedial action
●
The motor does not rotate.
Both the FWD input and REV input are being OFF.
Turn either the FWD input or REV input ON.
Both the FWD input and REV input are being ON.
The rotation speed has not set in the operation data.
Set the operation data.
The rotation speed is required to set before operating the motor.
Although the external speed setter is used to set the
rotation speed, the setting in the "external speed
command input" parameter has not changed.
Set the "external speed command input" parameter to "ON (enable)."
The AC power supply, motor, or capacitor has not
connected properly.
Check the connection.
The FREE input is being ON. Turn the FREE input OFF.
●
The speed cannot be changed. The motor does not rotate at the set speed.
The operation data selection input has not been switched. Check whether the M0 input and M1 input is switched correctly.
When the external speed setter is used, both the M0 and
M1 inputs are not turned OFF.
Turn the M0 and M1 inputs OFF.
When the external speed setter is used, the "external
speed command input" parameter has not changed.
Set the "external speed command input" parameter to "ON (enable)."
The setting range of the rotation speed is limited.
Check the setting for the "speed upper limit" and "speed lower
limit" parameters.
●
The motor rotates in the opposite direction against the specied direction.
The FWD input and REV input are connected wrongly or
otherwise not connected correctly.
Check the connection of the FWD input and REV input.
The gearhead that rotates in the opposite direction to the
motor rotation direction is used.
Reverse the FWD input and REV input operations.
Check the operating manual included with the motor for the
rotation direction of the gearhead output shaft.
Change the setting with the "motor rotation direction" parameter.
The setting for the "motor rotation direction" parameter is
changed.
Change the setting with the "motor rotation direction" parameter.
●
The setting cannot be performed using the operation panel
The edit lock function has been enabled. Release the edit lock function.
●
Motor operation is unstable. Motor vibration is too large.
Eect of electrical noise.
Refer to "12.5 Installing and wiring in compliance with EMC
Directive" on p.37 for the noise elimination measures.
●
The motor does not start instantaneously.
The acceleration time is too long. Adjust the acceleration time.
Load inertia may be excessive. Reduce the load inertia.
A load may be excessive. Reduce the load.
●
The motor rotates even if the speed command has not input.
The speed has been set in the "speed lower limit" parameter. Set the value in the "speed lower limit" parameter to "0."
●
The alarm code is displayed
Refer to "8.1 Alarms" on p.30".