FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

4PARAMETERS(3) Base frequency voltage setting (Pr. 19)Set V/F pattern⋅ Use Pr. 19 Base frequency voltage to set the base voltage (e.g. rated motor voltage).⋅ If the setting is less than the power supply voltage, the maximum output voltage of the inverter is as set in Pr. 19.⋅ Pr. 19 can be utilized in the following cases.(a) When regeneration frequency is high (e.g. continuous regeneration)During regeneration, the output voltage becomes higher than the reference and may cause an overcurrent trip(E.OC) due to an increased motor current.(b) When power supply voltage variation is largeWhen the power supply voltage exceeds the rated voltage of the motor, speed variation or motor overheat maybe caused by excessive torque or increased motor current.⋅ Set parameters as below when running the vector control dedicated motor (SF-V5RU, SF-V5RU1, SF-V5RU3, SF-V5RU4, SF-VR) under V/F control.Motor Type Pr. 19 Setting Pr. 3 SettingSF-V5RU-3.7kWSF-V5RU-5.5kW or moreSF-V5RUH-3.7kWSF-V5RUH-5.5kW or moreSF-V5RU1-30kW or lessSF-V5RU1-37kWSF-V5RU3-22kW or lessSF-V5RU3-30kWSF-V5RU4-3.7kW, 7.5kWSF-V5RU4-other than the aboveSF-VRSF-VRH170V160V340V320V160V170V160V170V150V160V160V320V50Hz33.33Hz16.67Hz50HzREMARKSWhen operation is discontinued under vector control due to failure of an encoder, etc., setting "9999" in Pr. 80 Motor capacity or Pr. 81Number of motor poles enables V/F control operation.⋅⋅⋅CAUTIONWhen advanced magnetic flux vector control mode, real sensorless vector control or vector control is selected, Pr. 3, Pr. 47, Pr.113 and Pr. 19 are made invalid and Pr. 83 and Pr. 84 are made valid.Note that Pr. 3 or Pr. 47 and Pr. 113 values are made valid as inflection points of S-pattern when Pr. 29 Acceleration/decelerationpattern selection = "1" (S-pattern acceleration/deceleration A).When Pr. 71 Applied motor is set to "2" (adjustable 5 points V/F characteristic), the Pr. 47 and Pr. 113 setting becomes invalid. Inaddition, you cannot set "8888" or "9999" in Pr. 19.Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Makesetting after confirming the function of each terminal.♦ Parameters referred to ♦Pr. 14 Load pattern selection Refer to page 144Pr. 29 Acceleration/deceleration pattern selection Refer to page 158Pr. 71 Applied motor Refer to page 169Pr. 80 Motor capacity Refer to page 75.Pr. 83 Rated motor voltage, Pr. 84 Rated motor frequency Refer to page 171.Pr. 178 to Pr. 189 (input terminal function selection) Refer to page 206.Advanced magnetic flux vector control Refer to page 131.Real sensorless vector control Refer to page 75.143