Chapter 14 Fault CodesMH300
ID No.
Display Fault Name Description
15
Phase loss
protection (orP)
Phase loss of power input
Action and Reset
Action condition
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.
Unbalanced three-phase of
input power
Check the power three-phase status.
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