degdrive DGI900 - Fault Alarm and Troubleshooting; Chapter 7 Troubleshooting

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Chapter 7 Troubleshooting
7.1 Fault Alarm and Troubleshooting
When inverter trips, protection function acts as LED displays fault code, fault relay acts,
inverter output stops and motor coasts to stop. DGI900 series inverter’s fault contents and
troubleshooting are shown in Table 7-1. After fault alarm occurs, inverter should be inspected
according to Table 7-1. When technical assistance required, please contact your supplier.
Table 7-1 Alarms and troubleshooting
Fault
code
Type of faults
Possible fault reasons Troubleshooting
E-01
Acc over
current
Acc time is short Adjust acc time
V/F curve setup is not suitable Adjust V/F curve
Restart the motor in running
Setup start mode as speed tracking
Torque boost setup is big Adjust torque boost or set as auto
Inverter power is small
Select inverter with proper capacity
E-02 Dec over
current
Dec time is short
Adjust Dec time
Potential load or load inertia is big
Add suitable braking device
Inverter power is small
Select inverter with proper capacity
E-03 Over current
at constant
speed running
Load mutation
Check load
Acc or Dec time is short
Adjust Acc or Dec time
Input voltage abnormal
Check input power supply
Load abnormal
check load
Inverter power is small
Select inverter with proper capacity
E-04 Acc
overvoltage
Input voltage abnormal
Check input power supply
Acc time is too short
Adjust Acc time
Restart the motor in running
Setup start mode as speed tracking