AC80T Tower Crane Purpose VFD Manual
40
Over current diagnoses process
Check braking mode
and seek for technic support
Reduce load change
or improve power
Reduce load change
or improve power
Whether set longer
decelerationtime
Set longer acceleration
time or not?
Prolong setting time
Whether load
changes suddently
May fault or misaction
caused by noise.Please
find technic support
Is deceleration
time set too short?
Is acceleration time
set too short?
Reduce the value
Whether torque
enhance value is too
Can be reduced?
Reduce load or
enhance power
Whether load is too large
Whether short circuit between output terminal
U/V/W and motor or earth circuit
Clear short circuit
no
no
no
no
no
no
no
no
no
no
no
no
yes
yes
yes
yes
yes
yes
yes
yes
yes
Constant speed
over curent E.0C3
Decelerate over
curent E.0C2
Accelerate over
curent E.0C1
