Position Control By Vector Control; Position Control - Mitsubishi Electric FR-A700 Instruction Manual

Parameter
6.5

Position control by vector control

This position control function allows precise movements to pre-selected positions. A cascaded
control loop consisting of a position controller and a subordinated speed controller guarantee
high-precision positioning.
The control loop can be optimised by changing the control parameters if required.
Purpose
Conditional position control by
parameter setting
Position control by pulse train input
of the inverter
Adjust the gear ratio of motor and
machine
Setting of positioning adjustment
parameter
Improve position control accuracy
6.5.1

Position control

● 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.
FR-A700 EC
Parameter that must be Set
Position command by parameter
Position command by conditional pulse
train
Setting the electronic gear
In-position width
Excessive level error
Gain adjustment of position control
Vector Vector Vector
Position control by vector control
Refer to
Section
Pr. 419, 6.5.2
Pr. 464–Pr. 494
Pr. 419, 6.5.3
Pr. 428–Pr. 430
Pr. 420, Pr. 421, 6.5.4
Pr. 424
Pr. 426, Pr. 427 6.5.5
Pr. 422, Pr. 423, 6.5.6
Pr. 425
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