K&R GT600-4T132G User Manual page 164

6. Description of Parameters
Function Code
F9-59
F9-60
F9-61
F9-62
F9-71
F9-72
F9-73
6.6.7 Load Lost Protection
Function Code
6
F9-63
F9-64
F9-65
These function parameters define the load lost protection function.
When output current of the AC drive falls below detection level (F9-64) for longer than time set in
F9-65, the AC drive automatically reduces output frequency to 7% of rated frequency. Once load
recovers during protection, the AC drive accelerates to frequency reference.
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Parameter Name
Power dip ride-through
function selection
Threshold of power dip ride-
through function disabled
Judging time of bus voltage
recovering from power dip
Threshold of power dip ride-
through function enabled
Power dip ride-through gain
Kp
Power dip ride-through
integral coefficient
Deceleration time of power
dip ride-through
●
In bus voltage constant control, when line voltage recovers, the AC drive
Note
accelerates to target frequency.
●
In deceleration to stop mode, when line voltage recovers, the AC drive continues
to decelerate to 0 Hz and stops. The AC drive will not be started until it receives
RUN command again.
Parameter Name
Load lost protection
Load lost detection level
Load lost detection time
Setting Range
0: Disabled
1: Bus voltage constant control
2: Decelerate to stop
85% to 120%
0.1s to 10.0s
60% to 85% (standard bus voltage)
0 to 100
0 to 100
0.0s to 300.0s
Setting Range
0: Disabled
1: Enabled
0.0% to 100.0% (rated motor current)
0.0s to 60.0s
Default
0
85%
0.5s
80.0%
40
30
20.0s
Default
0
10.0%
1.0s