Toshiba TOSVERT VF-PS1 Instruction Manual page 103

[Parameter setting]
Title Function
Regenerative power ride-through

control selection
Non-stop control time/Deceleration

time during power failure
 Under voltage detection level
Regenerative power ride-through control level

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 3: 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).
Note 4: For the parameter , 100% corresponds to 200V (200V class) or 400V (400V class).
 An example of setting when =
[When power is interrupted]
*1
Input voltage
Internal DC
voltage level
Motor speed
About 100ms～10s
*1: Note: If power is interrupted during deceleration stop, power
ride-through control will not be performed.
[If momentary power failure occurs]
*1
Input voltage
Internal DC
voltage level
Motor speed
*1: Note: If power is interrupted during deceleration stop, power
ride-through control will not be performed.
Adjustment range
:Disabled
:Power ride-through
:Deceleration stop during power failure:
~ sec.
~ %, : Automatic mode
~ %


Regenerative power
ride-through control selection
Coasting stop


Non-stop control
Normal acceleration
E-33
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.
E6581386
Default setting




5