Mitsubishi Electric FR-A862 Instruction Manual page 50

Encoder cable
• As the terminal block of the FR-A8AP is an insertion type, cables need to be treated when the encoder cables of the
inverter have crimp terminals. Cut the crimp terminal of the encoder cable and strip its sheath to make its cable wires loose.
Also, treat the shielding wires of the shielded twisted pair cable to ensure that they will not contact conductive areas.
Wire the stripped cable after twisting it to prevent it from becoming loose. In addition, do not solder it.
NOTE
• Crimp terminals
Commercially available (as of January 2017)
Phoenix Contact Co., Ltd.
Wire gauge
Terminal screw
size
(mm
0.3
M2
0.5
NICHIFU Co., Ltd.
Wire gauge
Terminal screw
size
(mm
M2 0.3 to 0.75
• When using a blade terminal (without insulation sleeve),
take caution that the twisted wires do not come out.
Wiring example
• Speed control
To converter unit
Forward rotation start
Reverse rotation start
Contact input common
3
Frequency command
2
Frequency setting
potentiometer
1
1/2W1kΩ
Torque limit
(+)
command
(-)
(±10 V)

The pin number differs according to the encoder used.
Speed, control, torque control, and position control by pulse train input are available with or without the Z-phase being connected.

Connect the encoder so that there is no looseness between the motor and motor shaft. Speed ratio must be 1:1.

Earth (ground) the shield of the encoder cable to the enclosure using a tool such as a P-clip. (Refer to

For the complementary, set the terminating resistor selection switch to OFF position. (Refer to

A separate power supply of 5 V / 12 V / 15 V / 24 V is necessary according to the encoder power specification.
When the encoder output is the differential line driver type, only 5 V can be input.
Make the voltage of the external power supply the same as the encoder output voltage, and connect the external power supply between
PG and SD.
Wire strip length
5 mm
2
(With insulation sleeve)
)
AI 0,34-6TQ
AI 0,5-6WH
Blade terminal part No.
2
)
BT 0.75-7
5 V differential line driver
Inverter
U
P/+
V
N/-
W
STF
FR-A8AP
STR
PA1
PA2
SD
PB1
PB2
10
Differential
PZ1
PZ2
2
Complementary
5
PG
SD
Terminating
resistor ON
PG
1
SD
OFF
∗4
Connection of motor with encoder (Vector control)
Ferrule part No.
(Without insulation sleeve)
A 0,34-7
A 0,5-6
Insulation cap part No.
VC 0.75
Motor with
encoder
U
V
IM
W
E
Earth
(Ground)
∗1
C
R
A
N
PLG
B
P ∗2
H
K
∗3
5 VDC power supply
(-)
(+)
∗5
INSTALLATION AND WIRING
Crimping tool
model
CRIMPFOX 6
Crimping tool
model
NH 69
page 50.)
page 48.)
2
49