Toshiba TOSVERT VF-S11 Instruction Manual page 130

3) DC braking during restart
When
This function is useful especially when the motor is not operated by the inverter but it is running because of
external force.
Warning!!
6
6.13.2 Regenerative power ride-through control/Deceleration
• Function
[Parameter setting]
Note: Even when this parameter is set, the particular load conditions may cause the motor to coast. In this
is set to , a motor speed search is performed each time operation is started.
• At restart, it takes about 300 ms for the inverter to check to see the number of revolutions of the
motor.
For this reason, the start-up takes more time than usual.
• Use this function when operating a system with one motor connected to one inverter.
This function may not operate properly in a system configuration with multiple motors connected to
one inverter.
Application to a crane or hoist
The crane or hoist may have its load moved downward during the
above waiting time from input of the operation starting command to
the restart of the motor. To apply the inverter to such machines,
therefore, set the auto-restart control mode selection parameter to
" = " (Disabled), Do not use the retry function, either.
stop
: Regenerative power ride-through control/Deceleration stop
1) Regenerative power ride-through control continues the operation of the motor by utilizing motor
regenerative energy in the event of momentary power failure.
2) Slowdown stop in the event of momentary power failure: If a momentary power failure occurs
during operation, the inverter stops forcibly. (Deceleration time varies with control.) When
operation is stopped, the message "
After the forced stop, the inverter remains static until you put off the operation command
momentarily.
Title Function
Regenerative power ride-through control /
Deceleration stop
case, use the auto-restart function
" is displayed (alternately) on the operation panel.
Adjustment range
0: Disabled
1: Enabled
2: Slowdown stop
along with this parameter function.
F-36
E6581158
Default setting
0