Current sensor
damaged or external
interference too large
Check the ground wiring or
contact us
U phase current
sampling zero
calibration value
error
Current sensor
damaged or external
interference too large
Check the ground wiring or
contact us
V phase current
sampling zero
calibration value
error
Current sensor
damaged or external
interference too large
Check the ground wiring or
contact us
Motor quadrature
encoder AB or
UVW broken
circuit
Cut off the drive power, Check the
wiring, then repower the drive
Motor encoder Z
phase
disconnected
Cut off the drive power, Check the
wiring, then repower the drive
Motor encoder
UVW phase
disconnected
Motor output
power overload
Motor output power
over the rated power
1. Change larger power motor
2. Check the motor shaft wiring
The heating power
overload
1. Change larger power motor
2. Check the motor shaft wiring
The bus capacitor
overload
Power supply not
stable, motor load too
large, cause the bus
capacitor charge
frequently
1. use 3 phase 220V power supply
for 220V drive
2. change larger power motor
locked rotor alarm
(drive version
U2-23=12.24&750
W and down
model support)
Locked rotor time up
to P0-70(unit is
second) and motor
speed lower than
P0-71(unit is 1rpm),
motor present output
torque larger than
P3-28, P3-29
1. monitor U0-02 motor torque,
check if P3-28, P3-29 torque limit
value is reasonable
2. check the mechanical structure
Motor
undervoltage when
running
Bus voltage too low
when running
1. check the power grid voltage
fluctuation
2. wait the bus voltage stable, then
repower
Regenerative
resistor overload
Regenerative resistor
discharging power
over the rated
Change larger power regenerative
resistor
Regenerative
resistor discharge
too long time
Regenerative resistor
connection error or
value too large
Change small value resistor and
check the wiring
Absolute encoder
communication
error
1. Encoder not connect
or contactor not good
Cut off drive power, check
encoder wiring, use multi-meter
test the connection
2. recived encoder data
error, and error time
over encoder error
time register P0-56
value
Not put the encoder wire together
with the strong power supply
cable, install filter at servo drive
power supply input side, install
magnet ring around encoder wire,
far away from large noise
equipment
Absolute encoder
battery voltage
The battery voltage is
lower than 2.75V
Please change new battery when
the servo power is on, the battery