Oriental motor BLVM620K-GFS - Troubleshooting and Remedial Actions; Motor Operation Troubleshooting Guide

Troubleshooting and remedial actions
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14 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 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.
Phenomenon Possible cause Remedial action
The motor does not rotate.
The power supply is not connected
properly.
Check the connection between the driver and power
supply.
Both the FWD input and REV input are
being OFF.
Turn either FWD input or REV input ON.
Both the FWD input and REV input are
ON.
Turn either FWD input or REV input ON.
The internal potentiometer is not
adjusted.
The factory setting of the internal potentiometer is 0 r/
min. Turn the internal potentiometer clockwise to set
the speed.
The potentiometer is not selected
correctly.
Turn the M0 input OFF when using the internal
potentiometer. Turn the M0 input ON when using the
external potentiometer.
The external potentiometer or external
DC voltage is not connected correctly.
Check the connection of the external potentiometer or
external DC voltage.
The ALARM LED (red) is blinking.
An alarm generated due to a protective function being
triggered.
Refer to p.64, to reset the alarm.
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 motor rotates in the clockwise direction when the
FWD input is ON, and in the counterclockwise direction
when the REV input is ON.
The gear ratio that the gearhead output
shaft rotates in the opposite direction
against the motor rotation direction is
used. (Refer to p.34 for the rotation
direction of the gearhead output shaft.)
Reverse the FWD input and REV input operations.
A combination type-hollow shaft at
gearhead is used.
•
With the combination type-hollow shaft at
gearhead, the rotation direction of the gear
output shaft is opposite of the motor output shaft.
Accordingly, reverse the FWD input and REV input
operations.
•
Is the gearhead viewed in the correct direction? With
a combination type-hollow shaft at gearhead, the
rotating direction of the gearhead changes according
to the direction in which the gearhead is viewed.
•
Motor operation is unstable.
•
Motor vibration is too large.
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:
· Keep away from the noise sources.
· Reconsider the wiring.
· Change the signal cable to a shielded cable.
· Install ferrite cores.
The motor does not stop
instantaneously.
The STOP-MODE input is being ON.
To cause the motor to stop instantaneously, turn the
STOP-MODE input OFF.
The load inertia is large. Reduce the load inertia.
The electromagnetic brake does not
hold the load in position.
The MB-FREE input is being ON. Turn the MB-FREE input OFF.