20
4.3
Fault information and troubleshooting
DLM series inverters have relatively complete protections including overload, phase short circuit,
to-ground short circuit, undervoltage, over temperature and overcurrent protection. When the inverter
protection triggers, please follow the information in the table below to identify the reasons.
Fault Display
Fault content and description
Approach
Acceleration-Overcurrent
1.
Please check the motor for short circuit,
especially output lines;
2.
Prolong acceleration time;
3.
The capacity of inverter is too small, please
increase the capacity;
4.
Reduce the torque increase set value.
Constant speed Overcurrent
1.
Please check the motor for short circuit, and
output line insulation;
2.
Check whether the motor jis jammed or
mechanical load is abruptly changed;
3.
The capacity of inverter is too small, please
increase the capacity;
4.
Please check if the grid voltage is abruptly
changed.
Deceleration-Overcurrent;
Stop-Overcurrent
1.
Please check the motor for short circuit, and
output line insulation;
2.
Increase the deceleration time;
3.
The capacity of inverter is too small, please
increase the capacity;
4.
DC braking is too large, please reduce the
value of DC braking;
5.
Inverter failure, contact distributor.
Short circuit to ground
1.
Please check the motor for short circuit, and
output line insulation;
2.
Inverter failure, contact distributor.
Stop-Overvoltage
Acceleration-Overvoltage
Constant-speed-Overvoltage
Deceleration-Overvoltage
1.
Increase the deceleration time, or install
brake resistor;
2.
Improve grid voltage.
Blown fuse
Contact distributor
Summary of Contents for DLM1-01D5S2G
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