E6581697
F-38
6
6.15.2
Regenerative power ride-through control/Deceleration stop
during power failure/Synchronized acceleration/deceleration
f302 : Regenerative power ride-through control
f317 : Synchronized deceleration time
f318 : Synchronized acceleration time
[Parameter setting]
Title Function Adjustment range Default setting
f302
Regenerative power ride-through
control (Deceleration stop)
0: Disabled
1: Regenerative power ride-through control
2: Deceleration stop during power failure
3: Synchronized acceleration / deceleration
(signal)
4: Synchronized acceleration / deceleration
(signal + failure)
0
f317
Synchronized deceleration time
(time elapsed between start of
deceleration to stop)
0.0-3600 (360.0) (s) 2.0
f318
Synchronized acceleration time
(time elapsed between start of
acceleration to achievement of
specified speed)
0.0-3600 (360.0) (s) 2.0
Note 1: The deceleration time and the acceleration time when f302=3 or 4 depend on the setting of f317
and that of
f318, respectively.
Note 2: Even if these functions are used, a motor may coast according to load conditions.
In this case, use the auto-restart function (
f301) along with this parameter function.
Note 3: Jog run function doesn't operate at synchronized acceleration/deceleration.
• Function
1) Regenerative power ride-through control: When momentary power failure occurs during operation, this
function makes operation continue using the regeneration
energy from a motor.
2) Deceleration stop during power failure: When momentary power failure occurs during operation, this
function stops the motor quickly compulsorily. A forcible stop is
carried out using the regeneration energy from the motor.
(Deceleration time varies with control.) When operation is
stopped, the message “
” is displayed (alternately) on the
operation panel.
After the forced stop, the inverter remains static until you put off
the operation command momentarily.
3) Synchronized acceleration/deceleration: When the inverter is used with textile machines, this function
stops more than one textile machine simultaneously in the event
of a momentary power failure and it prevents the breakage of
yarns around bobbins at the recovery from the power failure
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