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5
ENCODER FEEDBACK CONTROL
Mount FR-A8AP 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 speed detector (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
Forward rotation start
Reverse rotation start
Contact input common
MCCB
MC
Frequency setting
potentiometer
SF-JR motor with encoder
Inverter
R/L1
U
S/L2
V
T/L3
W
Earth
STF
(Ground)
FR-A8AP
STR
PA1
SD
PA2
PB1
10
Differential
PB2
2
PG
5
SD
Complementary
PG
Terminating
SD
resistor ON
∗3
∗5
∗4
OFF
ENCODER FEEDBACK CONTROL
U
V
IM
W
E
C
∗1
R
A
N
Encoder
H
K
∗2
(-)
(+)
5 VDC power
supply
∗6
5
27
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