4.Function Parameter List
EM8 User's Manual
33
4.5 Protection and solution
Code
Probable Cause
Fault description
Solution
Er. 01
Over-current
during Acc
1. Acceleration time is too short.
2. Torque boost is too high or
V/F curve is not suitable.
1. Extend the acceleration time.
2. Descend the torque boost or
adjust the V/F curve.
Er. 02
Over-current
during Dec
Deceleration time is too short.
Increase the deceleration time.
Er. 03
Over-current
During running
Load occurs mutation.
Decrease fluctuation of load.
Er. 04
Over-voltage
in acceleration
1. Input -voltage is too high.
2. Power switch is turned on
and off frequently.
1. Check the voltage of power.
2. Control the on-off of inverter
by the control terminal.
Er. 05
Over-voltage
in deceleration
1. Deceleration time is too short.
2. Input-voltage is abnormal.
1. Extend the deceleration time.
2. Check the voltage of power
supply.
3. Installation or reselect the
braking resistor.
Er. 06
Over-voltage
during running
1. Power voltage is abnormal.
2. There are energy feedback
load.
1. Check the voltage of power
supply.
2. Installation or reselect the
braking resistor.
Er. 07
Over-voltage at
stop
Power voltage is abnormal.
Check the voltage of power.
Er. 08
Low-voltage
during running
1. Power voltage is abnormal
there is great fluctuation of
load in electric network.
1. Check the voltage of power.
2. Provide the supply power
separately.
