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E6581381
F-58
6
6.17.5 Output phase failure detection
H : Output phase failure detection mode selection
• Function
This parameter detects inverter output Phase failure. If the Phase failure status persists for one
second or more, the tripping function and the FL relay will be activated. At the same time, a trip
information GRJQ will also be displayed.
Set H to to open the motor-inverter connection by switching commercial power operation to
inverter operation.
Detection errors may occur for special motors such as high-speed motors.
H=: No tripping (FL relay deactivated).
H=: With the power on, the phase failure detection is enabled only at the start of the first operation.
The inverter will trip if the Phase failure status persists for one second or more.
H=: The inverter checks for output phase failures each time it starts operation. The inverter will trip if
the Phase failure status persists for one second or more.
H=: The inverter checks for output phase failures during operation. The inverter will trip if the Phase
failure status persists for one second or more.
H=: The inverter checks for output phase failures at the start of and during operation. The inverter will
trip if the Phase failure status persists for one second or more.
H=: If it detects an all-phase failure, it will restart on completion of reconnection.
The inverter does not check for output phase failures when restarting after a momentary power
failure.
Note: A check for output phase failures is made during auto-tuning, regardless of the setting of this
parameter.
Title Function Adjustment range Default setting
H
Output phase failure detection mode
selection
0: Disabled
1: At start-up (Only one time after
power is turned on)
2: At start-up (each time)
3: During operation
4: At start-up + during operation
5: Detection of cutoff on output
side
0