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Shanghai Siheng Motor Co Ltd
www.sihengmotor.com
Alarm
Code
Alarm name
Running status
Reasons
Handling method
4
Position error
Switch on the main
power supply and
control
line,
input
instruction
pulse,
motor does not rotate
①
Wrong connection of U, V and W leads of
motors
②
Wrong lead of encoder cable.
Correct connection
Encoder failed
Replace the servo motor.
The detection range of setting position
deviation is too small.
Increase the detection range of out-of-
tolerance position.
Position proportional gain is too small.
Increase gain.
Insufficient torque.
①
Check the torque limit.
②
Reduce the load capacity.
③
Replace high power servo drivers
and motors
。
Command pulse frequency too high.
reduce frequency
5
Motor
overheating
Appears when
switching on the
control power
Circuit board failure.
Replace the servo motor driver.
①
cable is broken.
②
Motor internal temperature relay damaged
①
Check the cables.
②
Check the Motor.
Motor appears during
operation
Motor overload.
①
Reduce the load.
②
Reduce start and stop frequency.
③
Reduce the torque limit.
④
Reduce the relevant gain.
⑤
Replace high power ac servo drive
unit and motor
Motor internal fault.
Replace the servo motor.
6
Speed amplifier
saturation
failure
Motor appears during
operation
motor jammed mechanically.
Check the mechanical part of the load.
Over load
①
Reduce the load
②
Replace high power servo drivers
and motors.
7
Driver disable
exception
CCW, CW drive forbidden input terminal
Disconnect.
。
Check wiring and power supply for input
terminals.
8
Position
deviation
counter
overflow
①
motor jammed mechanically.
②
Abnormal input instruction pulse
①
Check the mechanical part of the
load.
②
Check the command pulse.
③
Check whether the motor receives
the instruction pulse to rotate.
9
Encoder Failed
Encoder wiring error.
Check wiring
encoder is damaged.
Replace the servo motor.
Bad encoder cable
Change cable
The encoder cable is too long, resulting in low
power supply voltage of the encoder.
①
Shorten the cable.
。
②
Multi-core parallel power supply is
adopted
。
10
Control under
voltage of
power supply
Input control internal 15V voltage is low
Check the control power
。
①
Bad internal connector of servo driver.
③
Abnormal switching power supply.
③
Chip is damaged.
①
Replace the servo motor driver.
②
Check the connectors.
③
Check the switching power supply.