Troubleshooting and remedial actions
−36−
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 office.
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.33 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
specified 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.
●
A gearhead which gear ratio is 30:1 or 50:1 is used for the combination type product
with a parallel shaft gearhead.
▷
When the gear ratio of the combination type • parallel shaft gearhead is 30:1 or 50:1, the
rotation direction of the gear output shaft is opposite of the motor output shaft. Accordingly,
reverse the FWD input and REV input operations.
●
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 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 (gearhead) output shaft is not misaligned with the load shaft.
▷
Check the coupling condition of the motor (gearhead) output shaft and load shaft.
●
Effect of electrical noise.
▷
Check the operation only with the motor, driver and other external equipment required for
operation. If an effect of noise has been confirmed, 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.]
Summary of Contents for BMU5200A Series
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