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

Torque control by real sensorless vectorcontrol, vector control4.5.4 Torque command (Pr. 803 to Pr. 806)SensorlessVectorTorque command source for torque control can be selected.ParameterNumber803804NameConstant power rangetorque characteristicselectionTorque commandsource selectionTorque command805value (RAM)Torque command806 value(RAM,EEPROM)(1) Control block diagramInitialValue001000%1000%SettingRange0 Constant motor output command1 Constant torque command013DescriptionTorque command by terminal1 analog input(Refer to page 273)Select the torque command inthe constant power range bytorque command setting.Torque command by parameter setting (Pr. 805 or Pr. 806)(-400% to 400%)Torque command by parametersetting(Pr. 805 or Pr. 806)(-400% to 400%)4 12 bit/16 bit digital input (FR-A7AX)5Torque command by parametersetting(Pr. 805 or Pr. 806)(Set from communication otherthan CC-Link communication: -400% to 400%)(Set from CC-Link communication: -327.68% to 327.67%)Torque command with using CC-Link communication (FR-A7NC)Setting from the remote resistercan be made. (-400% to 400%)Torque command with using CC-Link communication (FR-A7NC)Setting from the remote resistercan be made. (-327.68% to327.67%)6 —600 to1400%600 to1400%Writes the torque command value to the RAM.On the assumption that 1000% is 0%, the torque command is set byan offset from 1000%.Writes the torque command value to the RAM and EEPROM.On the assumption that 1000% is 0%, the torque command is set byan offset from 1000%.[Pr. 804] Torque commandsource selectionAnalog input0Parameter 1,3,5,6[Pr. 805, Pr. 806]16 bit digital input4(FR-A7AX)Speed limit input+-Speed estimatedvalueSpeed estimatedvalueSpeed limit valueSpeed control(proportional control)Speed limit valueReal sensorless vector control+Torque control-Speed estimatorMotorEncoderVector control(2) Torque command (Pr. 804 = "0" (initial value)) by analog input (terminal 1)-100%(-10V)Torque command150%0 100%(+10V)Terminal 1analog input⋅⋅⋅Torque command is given by voltage (current) input toterminal 1.When torque command is input from terminal 1, set "4 or3" in Pr. 868 Terminal 1 function assignment.Torque command by analog input can be calibrated usingcalibration parameter C16 (Pr. 919) to C19 (Pr. 920). (Refer topage 273 )-150%108