Mitsubishi Electronics A800 ユーザーズマニュアル

Using an encoder-equipped motor together with the plug-in option FR-A8AP enables speed, torque, and positioning control 
operations under orientation control, encoder feedback control, and full-scale vector control.





 • When the encoder's output voltage differs from its input power supply voltage, the signal loss detection (E.ECT) may occur.

 • Incorrect wiring or faulty setting to the encoder will cause a fault such as an overcurrent (E.OC[ ]) and an inverter 

overload (E.THT).

Correctly perform the encoder wiring and setting.

a

Mounting hole

Used for installation to the inverter.

—

b

Terminal block

Connected with the encoder.

c

Encoder type selection switch (SW3) Switches the encoder type (differential line driver/complementary).

d

CON2 connector

Not used.

—

e

Terminating resistor selection switch 
(SW1)

Switches ON or OFF the internal terminating resistor.

f

Switch for manufacturer setting 
(SW2)

Do not change from the initially-set status. (Switches 1 and 2 are OFF 

.) —

g

Connector

Connected to the option connector of the inverter.

h

LED for manufacturer check

Not used.

—

PA1

Encoder A-phase signal input terminal

A-, B- and Z-phase signals are input from the encoder.

PA2

Encoder A-phase inverse signal input terminal

PB1

Encoder B-phase signal input terminal

PB2

Encoder B-phase inverse signal input terminal

PZ1

Encoder Z-phase signal input terminal

PZ2

Encoder Z-phase inverse signal input terminal

PG

Encoder power supply (positive side) input terminal

Input terminal for the encoder power supply.
Connect the external power supply (5 V, 12 V, 15 V, 24 
V) and the encoder power cable. When the encoder 
output is the differential line driver type, only 5 V can 
be input. Make the voltage of the external power 
supply same as the encoder output voltage. (Check 
the encoder specification.)

SD

Encoder power supply ground terminal

PIN

Not used.

PO

Front view

Rear view

Terminal layout

PA

2

PB2

PZ2

SD

SD

PO

PA

1

PB1

PZ1

PG

PG

PIN

PIN and PO 
are not used.

1

2

3

4

O

N

1
2

O
N

SW2

SW3

SW1

(a)

(a)

(a)

(b)

(a)

(a)

(a)

(e)

(d)

(f)

(c)

(h)

1
2

O
N