Toshiba VF-PS1 User Manual

E6581386
E-33
5
5.18.2 Regenerative power ride-through control/Deceleration stop during power
failure
 : Regenerative power ride-through control

: Non-stop control time/Deceleration time during power failure
[Parameter setting]
Title Function Adjustment range Default setting

Regenerative power ride-through
control selection
:Disabled
:Power ride-through
:Deceleration stop during power failure:


Non-stop control time/Deceleration
time during power failure
~ sec. 
Note 1: The power ride-through control time when = depends on the setting of , and the deceleration
time when = depends on the setting of .
Note 2: Even if these functions are used, a motor may coast according to load conditions.
In this case, use the auto-restart function along with this parameter function.
Note 4: Although the setting of  can be written when  is set to  (non-stop control), it cannot be written
when  is set to  (momentary power failure slowdown stop).
Q An example of setting when =
[When power is interrupted]
Motor speed
Several hundreds of milliseconds
to several tens of seconds.
Input voltage
Coasting time
Note: If power is interrupted
during deceleration stop,
power ride-through control
will not be performed.
[If momentary power failure occurs]
Motor s
p
eed
Input voltage
Non-sto
p
control Normal acceleration
•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 in  (Deceleration time) using the regeneration
energy from the motor.
(Deceleration time varies with control.)
After the forced stop, the inverter remains static until you put off
the operation command momentarily.
+The time for which the operation of the motor
can be continued depends on the machine
inertia and load conditions. Before using this
function, therefore, perform verification tests.
+Use with the retry function allows the motor to
be restarted automatically without being
brought to an abnormal stop.

Toshiba VF-PS1 Specifications

General

Brand	Toshiba
Model	VF-PS1
Category	Inverter
Language	English