190
Fault
code
Fault type Possible fault cause Solutions
Er.oU3
Constant speed
over-voltage of the
drive
The acceleration/deceleration time is
too short.
Lengthen the acceleration/deceleration time
appropriately
Abnormal input voltage Check the input power supply
The input voltage fluctuates
abnormally
Install the input reactor
Large load inertia Adopt dynamic braking components
Er.IrF
Input side phase
loss
There is phase loss in input R.S.T.
Check the installation wiring
Check the input voltage
Er.odF
Output side phase
loss
There is phase loss in output U.V.W.
Check the output wiring
Check the motor and the cables
Er.drv
Power module
protection
There is interphase short circuit or
grounding short circuit in output three
phases.
Rewiring and check if the motor insulation is good.
Instantaneous over-current of the drive See the over-current solutions
The duct is blocked or the fan is
damaged.
Unblock the duct or replace the fan
The ambient temperature is too high. Lower the ambient temperature
The wirings or the plug-in units of the
control board loosens.
Check them and rewiring
Abnormal current waveform caused by
output phase loss and so on
Check the wiring
The auxiliary power supply is
damaged; the drive voltage is
insufficient.
Seek for service support
Inverter module bridging conduction Seek for service support
Abnormal control board Seek for service support
Braking pipe damaged Seek for service support
Er.oH1
Inverter module
heatsink
over-temperature
The ambient temperature is too high. Lower the ambient temperature
The duct is blocked. Clean the duct
The fan is damaged. Replace the fan
The inverter module is abnormal. Seek for service support
Er.oH2
Rectifier heatsink
over-temperature
The ambient temperature is too high. Lower the ambient temperature
The duct is blocked. Clean the duct
The fan is damaged. Replace the fan
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