EXPERT Standard Series User Manual
89
Fault
Code Fault Type
Possible Fault Reasons
Countermeasures
operation Load abnormal
Carry out load check.
Power grid voltage is low
Check input power supply
Drive power is low
Select the drive of large
power level
E004
Over
voltage
during
acceleratin
g operation
Input voltage abnormal
Check input power supply
Accelerating time is set too short Properly lengthen the
accelerating time
When instant stop occurs,
implement restart on all rotating
motors.
Set start method F2.00 as the
rotational speed tracking
restart function.
E005
Over
voltage
during
deceleratin
g operation
Decelerating time is too short
(relative to regenerated energy)
Lengthen the decelerating
time
There’s potential load or load
inertia torque is large.
Select proper energy
consumption braking parts.
E006
Over
voltage
during
constant
speed
operation
Input voltage abnormal
Check input power supply
Accelerating and decelerating
time is set too short.
Properly lengthen the
accelerating and decelerating
time
Abnormal change occurred in
input voltage.
Install input reactor.
Load has large inertia.
Consider to adopt energy
consumption braking parts.
E007
Under
voltage
during
running
Abnormal input voltage
Examine supply voltage
E008 Motor
overload
V/F curve not suitable
Correctly set V/F curve and
torque lifting.
Power grid voltage is too low.
Check power grid voltage
General motor is under long-term
low speed running with huge
load.
Special motor could be
selected for long-term low
speed running.
Motor overload protection
coefficient is set incorrectly.
Correctly set the motor
overload protection
coefficient
Motor blocked or sudden change
in load is too large.
Check load.
E009 Drive
overload
Accelerating time is too short.
Lengthen the accelerating
time
DC braking amount is too large. Decrease DC braking
current, and lengthen braking