degdrive DGI900 - Page 232

232
Fault
code
Type of faults
Possible fault reasons Troubleshooting
E-05 Dec
overvoltage
Dec time is short
Adjust the Dec time
Potential load or load inertia is big
Add suitable braking device
E-06 Overvoltage
at constant
speed running
Input voltage abnormal
Check input power supply
Acc or Dec time is short
Adjust the Acc or Dec time
Abnormal change of input
voltage
Mount input reactor
Load inertia is big Add suitable braking device
E-07 Reserved --- ---
E-08 Inverter
overheat
Air duct obstruction Clean air duct
Environment temperature is
high
Improve the ventilation or decrease
the carrier frequency
Fan damaged Replace a new fan
Inverter module abnormal Contact supplier
E-09 Inverter
overload
Acc time is short Adjust Acc time
DC braking value is high Decrease DC braking current and increase braking time
V/F curve setup is not suitable Adjust V/F curve
Restart the motor in running Setup start mode as speed tracking
restart
Grid voltage is low Check grid voltage
heavy load Select inverter with proper capacity
E-10 Motor
overload
V/F curve setup is not suitable Adjust V/F curve
Grid voltage is low Check grid voltage
General motor runs at low
speed with heavy load for long
term
Use a special motor for long term
running