ACD320user manual
U-03
Overcurrent
during
decelerating
process
failure
code
failure type
Fault Diagnosis and countermeasures
Improper V/F curve or manual torque
boost.
Restart rotating motor
Low power source voltage
Adjust V/F curve setting.adjust
manual torque boost or change to
automatic torque boost
Set speed checking restart function
or start after the motor stopping
Check input power supply
Exsit shock load in the accelerating
process.
Power of inverter is a bit small
Cansel shock load.
Choose inverter with high-power
Wheter grounding or short circuit exist in
output loop of inverter.
wiring again
Wether the connecting wire from inverter
to motor is too long
Install reactor or output filter
Auto tuning of motor parameters doesnot
run in vector control mode.
Run auto tuning of motor
parameters
Decelerating time is too short
Prolong decelerating time
low power source voltage
Have potential energy load or big Inertia
load
Check input power supply
Increase braking power of external
energy consumption braking
subassembly
Power of inverter is a bit small
Choose inverter with high-power
possible reason
countermeasure
Wheter grounding or short circuit exist in
output loop of inverter.
Wiring again.
Wether the connecting wire from inverter
to motor is too long
Install reactor or output filter.
U-04
overcurrent during
constant speed
process
Auto tuning of motor parameters doesnot
run in vector control mode.
Load change suddenly or Have
unwonted phenomena
Accel/Decel time is set to too short
low power source voltage
Power of inverter is a bit small
- 110-
Run auto tuning of motor
parameters.
Check or reduce break of the load
Prolong accelerating decelerating
time properly
Check input power supply
Choose inverter with high-power
    "