Справочник Пользователя для Mitsubishi Electronics FR-A720-0.4k to 90k

⋅ 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 large

When the power supply voltage exceeds the rated voltage of the motor, speed variation or motor overheat may
be 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.

Pr. 19 Setting

Pr. 3 Setting

SF-V5RU-3.7kW or lower

170V

50Hz

SF-V5RU-5.5kW or higher

160V

SF-V5RUH-3.7kW or lower

340V

SF-V5RUH-5.5kW or higher

320V

SF-V5RU1-30kW or lower

160V

33.33Hz

SF-V5RU1-37kW

170V

SF-V5RU3-22kW or lower

160V

SF-V5RU3-30kW

170V

SF-V5RU4-3.7kW, 7.5kW

150V

16.67Hz

SF-V5RU4-other than the above

160V

SF-VR

160V

50Hz

SF-VRH

320V

When operation is discontinued under vector control due to failure of an encoder, etc., setting "9999" in Pr. 80 Motor capacity or Pr. 81
Number of motor poles enables V/F control operation.

⋅ When 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 invalid and Pr. 83 and Pr. 84 are valid.
Note that Pr. 3 or Pr. 47 and Pr. 113 values are valid as inflection points of S-pattern when Pr. 29 Acceleration/deceleration pattern
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. In

addition, 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. Set

parameters after confirming the function of each terminal.

♦ Parameters referred to ♦

Pr. 83 Rated motor voltage, Pr. 84 Rated motor frequency