decreasing in one direction (0-9999
cycle display).
Power cable
disconnection
Any phase in UVW
of driver, cable or
motor broken
Disconnect the power supply of the
driver and check the connection of
the power cable. It is suggested that
the multimeter be used to test the
condition. After eliminating the
errors, the driver should be
re-energized.
Driver thermal
power overload
Check if the driver U3-00 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.
Overload, the actual
operating torque
exceeds the rated
torque, and
continuous
operation for a long
time. (Monitor
U0-02 to check the
actual operating
torque. If the motor
is in normal
operation, it will not
jam or jitter. If the
U0-02 is longer than
100, it will be
considered improper
selection of the
motor.)
Increase the capacity of drivers and
motors. Extend the acceleration and
deceleration time and reduce the
load. Monitor the U-00, whether it is
running over speed.
Mechanisms are
impacted, suddenly
weighted and
distorted.
Eliminate mechanical distortion.
Reduce load
Motor action when
motor brake is not
opened
Measure the voltage of the brake
terminal and decide to open the
brake.
It is suggested to use servo BK
signal to control the brake lock. If it
is not servo control, attention must
be paid to the timing of brake
opening and motor action.
Driver thermal
power overload
Wrong wiring of
encoder cable, power
cable or broken wire
or loose pin of
connector plug
Check the UVW connection of
power cable to see if there is any
phase sequence error.
The multimeter is used to measure
whether all the encoder cable are
on. Check whether the plug is loose,
for machine vibration, whether the
plug has shrinkage pin, virtual
welding, damage.
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