Toshiba TOSVERT VF-S11 User Manual

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3) DC braking during restart
When H is set to , a motor speed search is performed each time operation is started.
This function is useful especially when the motor is not operated by the inverter but it is running because of
external force.
Warning!!
• 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
"H
HH
H





=

" (Disabled), Do not use the retry function, either.

Toshiba TOSVERT VF-S11 Specifications

General

Model	TOSVERT VF-S11
Category	Inverter
Output Frequency	0.1-400Hz
Frequency Range	0.1-400Hz
Control Method	V/f Control, Sensorless Vector Control
Power Rating	0.2kW to 15kW
Cooling Method	Forced air cooling
Overload Capacity	150% for 60 seconds
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Communication	Modbus RTU
Input Voltage	200-240V, 380-480V
Braking Unit	Built-in (optional external braking resistor)