Toshiba TOSVERT VF-MB1 Instruction Manual page 158

6.15.2 Regenerative power ride-through control/Deceleration stop
f302 : Regenerative power ride-through control
f317 : Synchronized deceleration time
f318 : Synchronized acceleration time
• Function
1) Regenerative power ride-through control: When momentary power failure occurs during operation, this
2) Deceleration stop during power failure:
3) Synchronized acceleration/deceleration: When the inverter is used with textile machines, this function
6
[Parameter setting]
Title
Regenerative power ride-through
f302
control (Deceleration stop)
Synchronized deceleration time
(time elapsed between start of
f317
deceleration to stop)
Synchronized acceleration time
(time elapsed between start of
f318
acceleration to achievement of
specified speed)
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.
during power failure/Synchronized acceleration/deceleration
Function
function makes operation continue using the regeneration
energy from a motor.
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.
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
Adjustment range
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)
0.0-3600 (360.0) (s)
0.0-3600 (360.0) (s)
F-38
E6581697
Default setting
0
2.0
2.0