Mitsubishi FR-A740-00023-EC, Инструкция по эксплуатации

Страница: 134 / 474

124
Position control by vector control
4.6 Position control by vector control
4.6.1 Position control
(1) Setting procedure
Purpose Parameter that must be Set Refer to Page
Conditional position control by
parameter setting Position command by
parameter
Pr. 419, Pr. 464 to Pr. 494
126
Position control by pulse train input
of the inverter Position command by
conditional pulse train
Pr. 419, Pr. 428 to Pr. 430
129
Adjust the gear ratio of motor and
machine Setting the electronic
gear
Pr. 420, Pr. 421, Pr. 424
131
Setting of positioning adjustment
parameter In-position width
Excessive level error
Pr. 426, Pr. 427 132
Improve position control accuracy
Gain adjustment of
position control
Pr. 422, Pr. 423, Pr. 425
133
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 to run the motor.
This inverter can perform conditional position feed by contact input and position control by inverter conditional
pulse input.
CAUTION
⋅
The carrier frequencies are selectable from among 2k, 6k, 10k, 14kHz for vector control.
(2k and 6kHz for the 02160 or more)
Vector Vector Vector
Test run
Perform secure wiring. (Refer to page 35.)
Set the motor and encoder. (Pr. 71, Pr. 359, Pr. 369)
As required
· Set the electronic gear. (refer to page 131)
· Setting of positioning adjustment parameter (refer to page 132)
· Gain adjustment of position control (refer to page 133)
Set the motor capacity and the number of motor poles.
(Pr. 80, Pr. 81) (Refer to page 87 .)
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.
Set Pr. 71 Applied motor , Pr. 359 Encoder rotation direction and Pr. 369
Number of encoder pulses according to the motor and encoder used.
(Refer to page 36.)
Select a control method. (Refer to page
87
.)
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 126.)
Selection of command pulse form.
(Pr. 428)
(Refer to page 129.)
Position command by contact input
Set "0" (initial value) in
Pr. 419
.
Position command by inverter pulse train input
Set "2" in Pr. 419 .