Operating Instructions

Fault Codes
Digital Keypad
312 | 443
Record
Yes
Cause
Corrective Actions
Power-off
Improve power supply condition.
Incorrect drive models
Check if the power specification matches the drive.
Power voltage changes
● Adjust voltage to the power range of the drive.
● Cycle the power after checking the power. If LvS error still exists, return to the factory for
repair.
Start up the motor with large capacity
● Check the power system.
● Increase the capacity of power equipment.
DC bus
Install DC reactor(s).
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
15
Phase loss protection (orP)
Phase loss of power input
Action and Reset
Action level
When DC bus ripple is higher than the protection level, and the output current exceeds 50% of the
rated current, the drive starts counting. When the counting value reaches the upper limit, an orP
error occurs.
Action time
The action time varies with different output current.
Fault treatment parameter
Pr.06-53
Reset method
Manual reset
Reset condition
Immediately reset when DC bus is higher than Pr.07-00
Record
Yes
Cause
Corrective Actions
Phase loss of input power
Correctly install the wiring of the main circuit power.
Single phase power input to three-phase
model
Choose the model whose power matches the voltage.
Power voltage changes
● If the main circuit power works normally, verify the main circuit.
● Cycle the power after checking the power, if orP error still exists, return to the factory for
repair.
Loose wiring terminal of input power
Tighten the terminal screws according to the torque described in the user manual.
The input cable of three-phase power is
cut off
● Wire correctly.
● Replace the cut off cable.
Input power voltage changes too much
Verify the setting value for Pr.06-50 Time for Input Phase Loss Detection and Pr.06-52 Ripple of
Input Phase Loss
Unbalanced three-phase of input power
Check the power three-phase status.