125
check the power supply voltage;
if the power supply voltage is
normal, then the servo BB state,
monitor U0-05, the voltage
measured by the multimeter *
1.414 < U0-05 (within 10V
error), then the servo driver is
faulty and needs to be sent back
for repair.
Bus voltage U0-05
is lower than the
actual preset
threshold.
220V power
supply machine
(U0-05 ≤ 150V)
380V power
supply machine
(U0-05 ≤ 350V)
low voltage of power
grid when normal
power on
(1) Check the fluctuation of
power grid. The normal voltage
range of 220V driver is
200V~240V. If the voltage
fluctuation is large, the voltage
regulator is recommended.
(2) Replacement of larger
capacity transformers
Instantaneous power
failure
Re-energize after voltage
stabilization
Hardware Fault of
Driver Internal
Sampling Circuit
The AC gear of the multimeter
measures the input value of the
servo LN (R/S/T), which is 220V
± 10% of the normal value. If <
220V + 10% (380V + 10%), then
check the supply voltage; if the
supply voltage is normal, then
servo BB state, monitoring
U0-05, multimeter measurement
voltage * 1.414 > U0-05 (error
within 10V), then the servo driver
is faulty and needs to be sent
back for repair.
Bus Voltage
Charging Failure
low voltage of power
grid when normal
power on
low voltage of power grid when
normal power on
When the driver is on, please pay
attention to whether there is relay
actuation sound.
Module
temperature is too
high
(Module
temperature U-06
≥ 90℃ alarm,
U-06 ≥ 70℃
Warning)
Running under
heavy load for a
long time
Re-consider the capacity of the
motor, monitor the U0-02 torque
during operation, whether it is in the
value of more than 100 for a long
time, if yes, please chose the
large-capacity motor or load
reduction.
Excessive ambient
temperature
(1) Enhance ventilation measures to
reduce ambient temperature;
(2) Check whether the fan rotates
when the servo is enabled; when the
module temperature U-06 ≥45℃,
the fan opens.
Overspeed (actual
speed ≥
P3-21/P3-22)
The maximum
forward speed is
P3-21 and the
Check if the driver P0-33 is
identical with the motor code of the
motor label (the number after
MOTOR CODE), if not, please
change to the same one, then power
on again.