Toshiba TOSVERT VF-nC3 User Manual

E6581595
E-18
5
Caution:
When the V/F control mode selection  is set to : Automatic torque boost control, : Vector control,
or : Energy-saving, be sure to set the following parameters according to the motor's name plate.
 : Base frequency 1 (rated frequency)
 : Base frequency voltage 1 (rated voltage) 
 : Motor rated capacity 
 : Motor rated current
 : Motor rated speed
Set the other motor constants as necessary
1) Constant torque characteristics
Setting of V/F control mode selection  to  (V/F constant)
This is applied to loads with equipment like conveyors and cranes that require the same torque at low speeds
as at rated speeds.
Output voltage(%)
Base frequency voltage

Output frequency (Hz)

Base frequency

0
* To increase the torque further, increase the setting value of the manual torque boost .
 Refer to section 5.12 for details.
2) Setting for fans and pumps
Setting of V/F control mode selection  to  (variable torque)
This is appropriate for load characteristics of such things as fans, pumps and blowers in which the torque in
relation to load rotation speed is proportional to its square.
Output voltage(%
)
Base frequency voltage


Base frequency

0
Output frequency (Hz)

Toshiba TOSVERT VF-nC3 Specifications

General

Model	VF-nC3
Category	Inverter
Output Frequency Range	0.1 to 400 Hz
Control Method	V/f control, sensorless vector control
Overload Capacity	150% for 60 seconds
Input Frequency	50/60 Hz
Enclosure Rating	IP20
Input Voltage	200-240V AC
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat, Short Circuit
Ambient Temperature	-10°C to +50°C
Communication	Modbus RTU
Cooling Method	Fan Cooled
Operating Temperature	-10°C to +50°C
Storage Temperature	-20°C to +60°C
Humidity	5 to 95% RH (non-condensing)
Altitude	Up to 1000m
Braking Unit	Built-in braking transistor (for models up to 22kW), External braking resistor required