Troubleshooting
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24
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8 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 correctly, refer to the contents provided in this chapter and take appropriate action. If
the problem persists, contact your nearest Oriental Motor sales office.
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.
Nothing is indicated on the display
even if the power is supplied.
●
The power supply is not connected properly.
▷
Check the connection of the AC power supply.
The motor does not rotate.
●
The motor is not connected correctly.
▷
Check the connection of the motor cable.
●
The operation switch on the speed controller is set to the "STAND-BY" side.
▷
Set the operation switch to the "RUN" side.
●
When the motor is operated using external signals, the "external operation
signal input" parameter is not set to "
rE
."
▷
Set the parameter to "
rE
."
●
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.
●
The voltage is being dropped.
▷
Apply the voltage within the specification range.
●
The combination of the motor and speed controller is wrong.
▷
Use a motor and speed controller only in the specified combination.
Check the tables on p.6 for the model name.
The motor rotates in the direction
opposite to the specified direction.
●
The rotation direction switch is set to the opposite side.
▷
Check the rotation direction switch.
●
The gearhead that rotates in the opposite direction to the motor rotation
direction is used.
▷
Refer to p.17 for the rotation direction of the gearhead.
●
The FWD input and REV input are connected wrongly or otherwise not
connected correctly.
▷
Check the connection of the FWD input and REV input when the motor is operated
using external signals.
The speed cannot change.
The motor does not rotate at the set
speed.
●
The setting range of the rotation speed is limited.
▷
Check the setting for the "speed upper limit" and "speed lower limit" parameters.
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.
The motor doesn't start
instantaneously.
●
The acceleration time is too long.
▷
Adjust the acceleration time.
●
Load inertia may be excessive.
▷
Reduce the load inertia.
Data cannot be set.
●
Data setting is locked.
▷
Release the lock for setting data.
Motor operation is unstable.
Motor vibration is too large.
●
Effect of electrical noise.
▷
Refer to "11.2 Installing and wiring in compliance with EMC Directive" on p.29 for
measures with regard to noise.
●
The combination of the motor and speed controller is wrong.
▷
Use a motor and speed controller only in the specified combination.
Check the tables on p.6 for the model name.
