Toshiba Tosvert VF-S15 Instruction Manual

Also see for TOSVERT VF-S15 series: Function manual Quick start manual Instruction manual Instruction manual Manual

Contents

E6582175F-7466.19.6 Output voltage adjustment/Supply voltage correctionvlv : Base frequency voltage 1f307 : Supply voltage correction (output voltage limitation) FunctionSupply voltage correction: Prevent torque decline during low-speed operation.Maintains a constant V/F ratio, even when the input voltage fluctuates.Output voltage limitation: Limits the voltage to prevent outputting the voltage exceeding base frequencyvoltage (vlv). Applied when operating a special motor with low inducedvoltage.[Parameter setting]Title Function Adjustment range Default settingvlv Base frequency voltage1 50-330 (240V class)50-660 (500V class) *1f307 Supply voltage correction(output voltage limitation)0: Supply voltage uncorrected,output voltage limited*11: Supply voltage corrected,output voltage limited2: Supply voltage uncorrected,output voltage unlimited3: Supply voltage corrected,output voltage unlimited*1: Default setting values vary depending on the setup menu setting. Refer to section 11.5.● If f307 is set to "0" or "2" (Supply voltage uncorrected), the output voltage will change in proportion tothe input voltage.● Even if the base frequency voltage (vlv parameter ) is set above the input voltage, the output voltagewill not exceed the input voltage.● When the V/F control mode selection parameter () is set to any number between 2 to 6, the supplyvoltage is corrected regardless of the setting of f307.