Mitsubishi Electronics FR-A701 ユーザーズマニュアル

2

(6) Instructions for encoder cable wiring
• Use twisted pair shield cables (0.2mm

2

 or larger) to connect the FR-A7AP and position detector. Cables to terminals PG

and SD should be connected in parallel or be larger in size according to the cable length.
To protect the cables from noise, run them away from any source of noise (e.g. the main circuit and power supply voltage).

*

When differential line driver is set and a wiring length is 30m or more
The wiring length can be extended to 100m by slightly increasing the power by 5V (approx. 5.5V) using six or more cables with gauge size of 0.2mm

2

in parallel or a cable with gauge size of 1.25mm

2

 or more. Note that the voltage applied should be within power supply specifications of encoder.

• To reduce noise of the encoder cable, earth (ground) the encoder

shielded cable to the enclosure (as near as the inverter) with a P clip or

U clip made of metal.

(7) Parameter for encoder (Pr. 359, Pr. 369)

(8) Motor for vector control and parameter setting

Within 10m

At least two cables in parallel

Cable gauge 

0.2mm

2

 0.4mm

2 

or larger

Within 20m

At least four cables in parallel

0.75mm

2 

or larger

Within 100m *

At least six cables in parallel

1.25mm

2 

or larger

· For details of the optional encoder dedicated cable (FR-JCBL/FR-V7CBL), refer 

to page 30.

· The FR-V7CBL is provided with a P clip for earthing (grounding) shielded cable.

1

0

1

1024

0 to 4096

Set the number of encoder pulses output.
Set the number of pulses before it is multiplied by 4.

The above parameters can be set when the FR-A7AP (option) is mounted.

Mitsubishi standard 
motor

SF-JR

Motor rated current

0

Motor capacity

Number of motor poles

1

1024

SF-HR

Motor rated current

40

Motor capacity

Number of motor poles

1

1024

Others

Motor rated current

3 

Motor capacity

Number of motor poles

Mitsubishi constant-
torque motor

SF-JRCA 4P

Motor rated current

1

Motor capacity

4

1

1024

SF-HRCA

Motor rated current

50

Motor capacity

Number of motor poles

1

1024

Others

Motor rated current

13 

Motor capacity

Number of motor poles

Mitsubishi vector 
control dedicated 
motor

SF-V5RU 

(1500r/min series)

0 

30

Motor capacity

4

1

2048

SF-V5RU

 (except for 1500r/
min series)

0 

13 

Motor capacity

4

1

2048

SF-THY

0 

33 

Motor capacity

4

1

2048

Other manufacturer's 
standard motor

—

Motor rated current

3 

Motor capacity

Number of motor poles

Other manufacturer's 
constant-torque 
motor

—

Motor rated current

13 

Motor capacity

Number of motor poles

Values in the bolded frame are initial values.

*1

Offline auto tuning is necessary. (Refer to page 71)

*2

Set this parameter according to the motor (encoder) used.

*3

Use thermal protector input provided with the motor.

♦Parameters referred to♦

Encoder cable

Shield

P clip 

Forward rotation is clockwise
rotation when viewed from A.

A

Encoder

CW

A

Encoder

CCW

Forward rotation is counterclockwise
rotation when viewed from A.