Application parameter group 10
PARAMETER DESCRIPTION 264
5.11.12 When input power fail stop function
When the inverter power comes to a sudden failure, regenerative power can maintain the inverter output to
deceleration stop.
Parameter
Name
Default Setting Range
Content
10-33
P.273
When input power fail
stop option
0
0
Off.
1
No under-voltage avoidance (If under-voltage or power fail,
the motor decelerates to stop.)
2
No under-voltage avoidance (If under-voltage or power fail,
the motor decelerates to stop. Motor re-accelerates if power
restores during the deceleration to stop.)
11
under-voltage avoidance( If under-voltage or power fail, the
motor decelerates to stop.)
12
under-voltage avoidance (If under-voltage or power fail, the
motor decelerates to stop. Motor re-accelerates if power
restores during the deceleration to stop.)
10-34
P.274
When input power fail
subtracted frequency
at deceleration start
3.00Hz
0～20.00Hz
Normally it can run at the initial value, please adjust
according to the load specification (inertia, torque)
10-35
P.275
When input power fail
subtraction starting
frequency
50.00Hz
0～120.00Hz
When output frequency≥10-35(P.275), Motor decelerates
from “output frequency - 10-34(P.274)”；When output
frequency＜10-35(P.275), deceleration from output
frequency
99999
Motor decelerates from “output frequency - 10-34(P.274)”
10-36
P.276
Deceleration time
during input power
failure 1
5.00s
0～360.00s/0～
3600.00s
Set the time from the deceleration start to the 10-38(P.278)
set frequency.
10-37
P.277
Deceleration time
during input power
failure 2
99999
0～360.00s/0～
3600.00s
Set the deceleration time for the frequency range starting at
10-38(P.278) and downward.
99999
Same as 10-36(P.276)
10-38
P.278
When input power fail
deceleration time
switch-over frequency
50.00Hz
0～650.00Hz
Set the frequency at which the slope during deceleration
switches from the 10-36(P.276) setting to the 10-37(P.277)
setting.
10-39
P.279
UV avoidance voltage
gain
100.0%
0～200.0%
Adjust the response level for under-voltage avoidance
operation.
Power failure stop function
When 10-33(P.273) is set to 1 or 11, (and 10-09(P.57)=99999), inverter decelerates to a stop when input power fail;
When 10-33(P.273) is set to 2 or 12, inverter decelerates to a stop when input power fail, and if during deceleration
power comes back ON, inverter accelerates again.
Set 10-34(P.274) according to the value of load inertia. If load inertia is larger, then 10-34(P.274) should be set
to a smaller value to produce enough regenerative power, usually 3.00Hz is enough.
Motor decelerates for the time set in 10-36(P.276).( deceleration time is set to the time from 01-09(P.20)
acceleration / deceleration reference frequency to stop.)
Setting
