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

In the position control, the speed command is calculated so that the difference between command pulse (or
parameter setting) and the number of feedback pulses from the encoder is zero in order to run the motor.
This inverter can perform simple position feed by contact input, position control by inverter simple pulse input,
and position control by FR-A7AL pulse train input. 

⋅ The carrier frequencies are selectable from among 2k, 6k, 10k, 14kHz for vector control. 

(2k and 6kHz for the 75K or higher)

Perform secure wiring. (Refer to page 37.)

Set the motor and encoder. (Pr. 71, Pr. 359, Pr. 369) 

· Set the electronic gear. (Refer to page 139)

· Setting of positioning adjustment parameter  (refer to page 140)

· Gain adjustment of position control (refer to page 141)

Set the motor capacity and the number of motor poles. 

Set the motor capacity (kW) in Pr. 80 Motor capacity and set the number

of motor poles (number of poles) in Pr. 81 Number of motor poles. (V/F

control is performed when the setting is "9999" (initial value).)

Mount the FR-A7AP/FR-A7AL (option).

Set  Pr. 71 Applied motor,  Pr. 359 Encoder rotation direction and Pr. 369

Number of encoder pulses according to the motor and encoder used.

Select a control method. (Refer to page 

Make speed control valid by selecting "3" (position control) "4" (speed-

position switchover) or "5" (position-torque switchover) for Pr. 800.

Selection of position command source. (Pr. 419)

Setting of parameter for position feed 

(Pr. 465 to Pr. 494). 
(Refer to page 134.)

Selection of command pulse form

(Pr. 428). 

(Refer to page 137.)

Position command by contact

input

Set "0" (initial value) in Pr. 419.

Position command by 

inverter pulse train input

Set "2" in Pr. 419.

Position command from the

positioning module of the

programmable controller

system (through FR-A7AL)

Set Pr. 419 = "1"