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

4PARAMETERSPosition control by vector control4.6 Position control by vector controlPurpose Parameter that must be Set Refer to PageConditional position control byparameter settingPosition control by pulse train inputof the inverterAdjust the gear ratio of motor andmachineSetting of positioning adjustmentparameterImprove position control accuracyPosition command byparameterPosition command byconditional pulse trainSetting the electronicgearIn-position widthExcessive level errorGain adjustment ofposition controlPr. 419, Pr. 464 to Pr. 494 117Pr. 419, Pr. 428 to Pr. 430 120Pr. 420, Pr. 421, Pr. 424 122Pr. 426, Pr. 427 123Pr. 422, Pr. 423, Pr. 425 1244.6.1 Position controlVector• In the position control, the speed command is calculated so that the difference between command pulse (orparameter setting) and the number of feedback pulses from the encoder is zero to run the motor.• This inverter can perform conditional position feed by contact input and position control by inverter conditionalpulse input.(1) Setting procedurePerform secure wiring. (Refer to page 34.)Mount the FR-A7AP.Set the motor and encoder. (Pr. 71, Pr. 359, Pr. 369)Set the motor capacity and the number of motor poles.(Pr. 80, Pr. 81) (Refer to page 75.)Set the motor capacity (kW) in Pr. 80 Motor capacity and set the numberof motor poles (number of poles) in Pr. 81 Number of motor poles. (V/Fcontrol is performed when the setting is "9999" (initial value).)Select a control method. (Refer to page 75.)Set Pr. 71 Applied motor, Pr. 359 Encoder rotation direction and Pr. 369Number of encoder pulses according to the motor and encoder used.(Refer to page 35.)Make speed control valid by selecting "3" (position control) "4" (speedpositionswitchover) or "5" (position-torque switchover) for Pr. 800.Selection of position command source. (Pr. 419)Position command by contact inputSet "0" (initial value) in Pr. 419.Position command by inverter pulse train inputSet "2" in Pr. 419.Setting of parameter for position feed(Pr. 465 to Pr. 494).(Refer to page 117.)Selection of command pulse form.(Pr. 428)(Refer to page 120.)Test runAs required· Set the electronic gear. (refer to page 122)· Setting of positioning adjustment parameter (refer to page 123)· Gain adjustment of position control (refer to page 124page 123)⋅CAUTIONThe carrier frequencies are selectable from among 2k, 6k, 10k, 14kHz for vector control.115