Encoder Feedback Control; Wiring Examples - Mitsubishi Electric 800 Series Instruction Manual

5

ENCODER FEEDBACK CONTROL

Mount FR-A8APS to an FR-A800 series inverter to perform encoder feedback control under V/F control or Advanced magnetic
flux vector control.
This controls the inverter output frequency so that the motor speed is constant to the load variation by detecting the motor
speed with the encoder to feed back to the inverter.
For the details of the parameters used for encoder feedback control, refer to the Instruction Manual (Detailed) of the inverter.
5.1

Wiring examples

Three-phase
AC power supply

Connect the encoder so that there is no looseness between the motor and motor shaft. Speed ratio should be 1:1.

Earth (ground) the shield of the encoder cable to the enclosure using a tool such as a P-clip.
20
ENCODER FEEDBACK CONTROL
MCCB MC
Forward rotation start
Reverse rotation start
Contact input common
Frequency setting
potentiometer
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
Inverter
R/L1
U
S/L2
V
T/L3
W
STF
FR-A8APS
STR
DT+
SD
DT-
CK+
10
CK-
2
UP
5
UN
∗2
U
V
M
W
E
Earth
(Ground)
DATA
DATA
CLOCK
CLOCK
Encoder
Up
0v
∗1