2. Troubleshooting
22
Occurs when there is excessive current than the specific
value due to a ground fault in the output. The ground fault
detection current is different per inverter capacity.
Ground fault occurred in the output
lead.
Separate the output wiring and check whether the ground fault is
present. Remove the ground fault
There is a problem in the wiring
between the inverter and the motor.
Check the output wiring as well as the recommended specifications
of the wiring length, thickness, etc. Replace it if necessary.
The insulation of the motor is
damaged.
Occurs depending on the inverse time (delay) to prevent
overheat of the motor due to overload. Operation will resume
after setting Pr.40 at a value other than 0.
The motor has overheated.
Reduce the load or operation frequency.
The inverter load is greater than the
rated capacity.
Replace the inverter that has a bigger capacity.
The value for electronic thermal
protection (ETH) is too low.
Set the ETH level appropriately.
The inverter has been operating at
low speed for a long time.
Replace the motor that supplies extra power to the cooling fan.
Occurs when voltage rate of the DC circuit is higher than the
specific value.
The input voltage is too high.
Check whether the input voltage is higher than the specified value.
The actual DC link voltage is different
from the value on the display.
Need to inspect the Hardware.
Contact the retailer or the LSIS Customer Service Center.
Acc/Dec time is too short compared
to the load inertia (GD2).
There is a generative load at the
inverter output.
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