Auto-Restart (Restart During Free-Run (Coast; Regenerative Power Ride-Through Control / Deceleration Stop - Toshiba TOSVERT VF-P7 Instruction Manual

Inverter for fan and pump applications
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Step 3: Set the property of Auto-restart
1) Case =
[Parameter setting]
Title


Example of setting) In the case adjustment value is , set at ∼ and check the property.
Notice that in this case, waiting time for the restart grows to 110∼120[%]. If it cannot be adjusted at
setting , , reset the range of  (motor constant #2)at 20~30% lower.
2) Case = ∼ 
[Parameter setting]
Title
Auto-restart

adjustment #3
This parameter adjusts the rising time of motor torque at time of restarting. Adjust this parameter to
inertia moment of the load.

6.13.2 Regenerative power ride-through control / Deceleration stop

 :Regenerative power ride-through control / Deceleration stop
 :Ride-through time / Deceleration time
・Function
1) Regenerative power ride-through control
When instant electric power failure occurs during operation, this function makes
operation continue using the regeneration energy from a motor.
2)Deceleration stop
When instant electric 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 changes with
control.) After a compulsive stop, it maintains a stop state until operation instruction
is once turned off.
[When power is shut off]
Input voltage
Motor speed
[When power fails momentarily]
Input voltage
Motor speed
[Parameter setting]
Title
Regenerative power ride-through

control / Deceleration stop

Ride-through time / Deceleration time
Note) Even if these functions are used, a motor may free run according to load conditions. In this case,
please use the auto restart function together.
Note) These functions do not operate at the time of torque control or position control.
Note) Usual slowdown time comes at the time of notes =  and =.
Function
Auto-restart adjustment #1
Auto-restart adjustment #2
Function
: Fast(0.5[s])(with a small inertia application)
: Normal(1.0[s])
∼: 1.5∼4.5[s]
: Slow(5.0[s])
free run time
Function
Adjustment range
∼
∼
Adjustment range
★The time for which the motor keeps running
varies with the inertial of the machine operated
and the loading conditions. So, conduct a test
to determine the time before using this function.
Using this function in conjunction with the retry
function enables the inverter to restart without
making a fault stop.
About 100[ms]
The power ride-through control ( = ) is
[=]
exercised for about 100 [ms]. (A inverter which
Applicable Motor capacity is 22kW or less is
able to continue to control the motor a few
seconds.)
[=]
Less than 100[ms]
Adjustment range
: OFF
: ON (Regenerative
power ride-through control)
: ON (Deceleration stop)
∼ [s]
F-23
Default setting
Model dependent
Model dependent
Default setting
Model
dependent
Default setting


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