Oriental motor BMU Series User Manual

Troubleshooting and remedial actions
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10 Troubleshooting and remedial actions
During motor operation, the motor or driver may fail to function properly due to an improper speed setting or wiring.
When the motor cannot be operated correctly, refer to the contents provided in this section and take appropriate action.
If the problem persists, contact your nearest oce.
Note
•
Check the alarm message when the alarm generates.
•
I/O signals can be monitored with the monitor mode. Use to check the wiring condition of the I/O signals.
The motor does not
operate.
●
The power supply is not connected correctly or it has become improper connection.
▷
Check the connections between the driver and power supply.
●
The operation switch is set to the "STAND-BY" side.
▷
Set the operation switch to the "RUN" side.
●
When operating the motor using the operation switch, the "external operation signal input"
parameter is set to "ON" or "RE."
▷
Set the "external operation signal input" parameter to "OFF" after setting the operation switch to the
STAND-BY side.
●
When operating the motor using external signals, the "external operation signal input"
parameter is set to "OFF."
▷
Set the "external operation signal input" parameter to "ON" or "RE" after turning the input operation
signal OFF.
●
Both the FWD input and REV input are being OFF.
Both the FWD input and REV input are being ON.
▷
Turn either of the FWD input or REV input ON.
●
An alarm is present.
▷
A protective function is triggered and an alarm generates. Refer to p.34 and reset the alarm after
removing the cause of the alarm.
The rotation speed is
not displayed.
●
The "panel initial view" parameter is not set to the rotation speed.
▷
Set the "panel initial view" parameter to the rotation speed.
The motor rotates in the
direction opposite to
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 gear ratio that the gearhead output shaft rotates in the opposite direction against the
motor rotation direction is used.
▷
Check the operating manual of the motor for the rotation direction of the gearhead output shaft.
●
The rotation direction switch is set wrong.
▷
Check the rotation direction switch.
●
When the rotation direction switch is set to REV, the "external operation signal input"
parameter is set to "RE."
▷
Check the setting of the "external operation signal input" parameter.
The setting cannot be
performed using the
setting dial.
●
The lock function has been enabled.
▷
Release the lock function.
The set rotation speed
is not saved.
●
It is not determined by pressing the setting dial.
▷
After setting the rotation speed, determine it by pressing the setting dial.
The motor is not
reversed by the rotation
direction switch.
●
The "external operation signal input" parameter is set to "RE."
▷
Check the setting of the "external operation signal input" parameter.
The rotation speed
cannot be increased.
●
The speed upper limit has been set.
▷
Raise the speed upper limit.
The rotation speed
cannot be decreased.
●
The speed lower limit has been set.
▷
Lower the speed lower limit.
Motor operation is
unstable.
Motor vibration is too
great.
●
The motor and gearhead output shaft is misaligned with a load shaft.
▷
Check the coupling condition of the motor and gearhead output shaft and the load shaft.
●
Eect of electrical noise.
▷
Check the operation only with the motor, driver and other external equipment required for operation.
If an eect of noise has been conrmed, implement the following countermeasures:
[Move the unit farther away from noise generation sources.] [Review the wiring.]
[Change the signal cables to a shielded type.] [Install ferrite cores.]

Oriental motor BMU Series Specifications

General

Brand	Oriental motor
Model	BMU Series
Category	Engine
Language	English