DA98D User Manual
37
①Failure in circuit board.
②Power fuse is damaged.
③Failure in soft start circuit.
④Damaged rectifier.
Replace servo drive unit.
3
Voltage
Shortage
in Main
Circuit
Occur when
switching on
main power
supply
①Excessively low power voltage.
②Temporary power failure for
more than 20mS.
Examine the power supply.
①Insufficient power capacity .
②instantaneous power failure.
Examine the power supply.
3
Voltage
Shortage
in Main
Circuit
Occur during
motor
operation
Heat radiator overheating.
Examine load.
Occur when
switching on
control
power
Failure in circuit board.
Replace servo driver.
①Wrong connection of motor leads
of U, V and W.
②Wrong connection of encoder
cable leads.
Correct wiring.
Encoder failure.
Replace servo motor.
Set inspection range for position
excess.
Extend inspection range for
position excess.
Position proportion gain is too
small.
Increase the gain.
Insufficient torque.
①Examine torque limiting
value.
②Reduce loading capacity.
③Replace it with drive unit and
motor of greater frequency.
4
Position
Excess
After
switching on
main power
supply and
control wire,
the motor
does not
work when
inputting
command
pulse
Excessively high command puls
frequency.
Reduce the frequency.
Failure in circuit board. Replace servo drive unit. Occur when
switching on
control
power
①Cable disconnection .
②Internal temperature relay of
motor is damaged.
①Examine cable.
Examine motor② .
Motor overload.
①Reduce load.
②Reduce start/stop frequency.
③Reduce torque limiting value.
④ Reduce related gain.
⑤Replace drive unit and moto
of greater frequency.
5
Motor
overheating
Occur during
motor
operation
Internal failure in motor. ① Replace servo motor.
Motor gets stuck by the machinery. Examine machinery part of the
load.
6
Saturation
Failure of
Speed
Regulator
Occur during
motor
operation
Overload. ①Reduce load.
②Replace it with drive unit and
motor of greater frequency.
7
Abnormal
Drive
Stopping
Disconnection of CCW and CW
drive stopping input terminal.
Examine the wire connection
and power of the input
terminal.