Toshiba Tosvert VF-S15 User Manual

E6582175
F-56
6
6.17 Low voltage operation
f297 : Low voltage operation upper limit frequency
f298 : Low voltage operation DC voltage
 Refer to “Low voltage operation instruction manual: E6581918” for details.
6.18 PWM carrier frequency
aul : Overload characteristic selection
f300 : PWM carrier frequency
f312 : Random mode
f316 : PWM carrier frequency control mode selection
 Function
These parameters are effective in reducing the magnetic noise of the motor, the noise from the inverter and
the resonance with machinery, etc.
1) When reducing the magnetic noise of the motor, increase f300(PWM carrier frequency).
If f300 cannot be increased, set f312(random mode) to “random mode” to reduce magnetic noise
of the motor.
2) When reducing the noise from the inverter, decrease f300.
However, the magnetic noise of the motor is increased.
3) When reducing the resonance with the machinery or the fan cover of the motor, change f300.
4) When the trip of oh (overheat) or ol3 (main module overload) occurs, set f316(PWM carrier
frequency control mode selection) to "Carrier frequency with automatic reduction" to avoid the trip by
reducing the carrier frequency automatically.
However, the magnetic noise of the motor is increased.

Toshiba Tosvert VF-S15 Specifications

General

Category	Inverter
Control Method	V/f control, Sensorless vector control
Cooling Method	Forced air cooling
Model	Tosvert VF-S15
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Communication Options	Modbus RTU
Overload Capacity	150% for 1 minute
Braking Unit	Built-in braking transistor
Output Voltage	3-Phase, same as input voltage
Operating Temperature	-10 to +50°C (14 to 122°F)
Storage Temperature	-20 to 65°C (-4 to 149°F)
Humidity	5 to 95% RH (non-condensing)
Altitude	Up to 1000m above sea level
Input Voltage	3-Phase 200 to 240 VAC, 3-Phase 380 to 480 VAC
Weight	Varies depending on model (e.g., 0.8 kg to 16 kg)