Mitsubishi Electric MELSERVO MR-J4-B Series User manual

SH (NA) 030111-D (1308) MEE Printed in Japan Specifications are subject to change without notice.
This Instruction Manual uses recycled paper.
MODEL
MODEL
CODE
General-Purpose AC Servo
compatible
HEAD OFFICE : TOKYO BLDG MARUNOUCHI TOKYO 100-8310
LINEAR ENCODER
INSTRUCTION MANUAL
LINEAR ENCODER
INSTRUCTIONMANUAL
1CW947
D

A - 1
Safety Instructions
Please read the instructions carefully before using the equipment.
Do not attempt to install, operate, maintain or inspect the equipment until you have read through this
Instruction Manual and appended documents carefully and can use the equipment correctly. Do not use the
equipment until you have a full knowledge of the equipment, safety information and instructions.
In this Instruction Manual, the safety instruction levels are classified into "WARNING" and "CAUTION".
WARNING Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
CAUTION
Indicates that incorrect handling may cause hazardous conditions, resultin
g
in medium or slight injury to personnel or may cause physical damage.
Note that the CAUTION level may lead to a serious consequence according to conditions.
Please follow the instructions of both levels because they are important to personnel safety.
What must not be done and what must be done are indicated by the following diagrammatic symbols.
Indicates what must not be done. For example, "No Fire" is indicated by .
Indicates what must be done. For example, grounding is indicated by .
In this Instruction Manual, instructions at a lower level than the above, instructions for other functions, and so
on are classified into "POINT".
After reading this Instruction Manual, keep it accessible to the operator.

A - 2
MEMO

1
CONTENTS
1. LINEAR ENCODER 1- 1 to 1-48
1.1 Compatible linear encoder list ........................................................................................................... 1- 2
1.2 Linear encoder manufactured by Mitutoyo (absolute type) ............................................................... 1- 5
1.2.1 AT343A........................................................................................................................................ 1- 5
1.2.2 AT543A-SC/AT545A-SC ............................................................................................................ 1-10
1.2.3 ST741A/ST742A/ST743A/ST744A ............................................................................................ 1-15
1.3 Linear encoder manufactured by Heidenhain................................................................................... 1-21
1.3.1 LC 493M/LC 193M (absolute type) ............................................................................................ 1-21
1.3.2 LIDA 485 + EIB 392M/LIDA 487 + EIB 392M (incremental type) .............................................. 1-25
1.4 Linear encoder manufactured by Magnescale ................................................................................. 1-29
1.4.1 SR77/SR87/SR75/SR85 ............................................................................................................ 1-29
1.4.2 SL710 + PL101-RM/RHM (incremental type) ............................................................................ 1-31
1.5 Linear encoder manufactured by Renishaw ..................................................................................... 1-36
1.5.1 RESOLUTE RL40M (absolute type) .......................................................................................... 1-36
1.5.2 RGH26_ (incremental type) ....................................................................................................... 1-41
1.6 A/B/Z-phase differential output linear encoder ................................................................................. 1-46
2. OPTION CABLE/CONNECTOR SETS 2- 1 to 2- 4
2.1 MR-EKCBL_M-H encoder cable........................................................................................................ 2- 1
2.2 MR-ECNM connector set................................................................................................................... 2- 2
2.3 MR-J3CN2 connector set .................................................................................................................. 2- 2
2.4 MR-J4THCBL03M branch cable........................................................................................................ 2- 3
2.5 MR-J4FCCBL03M branch cable........................................................................................................ 2- 4
3. DETAILED EXPLANATION OF [AL. 2A LINEAR ENCODER ERROR 1] 3- 1 to 3- 2
APPENDIX App.- 1 to App.- 1
App. 1 Production of branch cable for linear servo motor .................................................................. App.- 1
App. 2 Production of branch cable for fully closed loop control system .............................................App.- 1
App. 3 Manufacturer list ......................................................................................................................App.- 1

2
MEMO

1. LINEAR ENCODER
1 - 1
1. LINEAR ENCODER
CAUTION
More careful measures against oil and dust must be taken for the linear encoder
than the linear servo motor. For details, contact each linear encoder
manufacturer.
POINT
Always use the linear encoder cable introduced in this chapter. Using other
products may cause a malfunction.
For details of the linear encoder specifications, performance and assurance,
contact each linear encoder manufacturer.
A linear encoder communication method cannot be used depending on the
software version of the servo amplifier. Refer to section 1.1 for combinations of
the communication methods and software versions.
When the linear encoder is incorrectly installed, an alarm or a position mismatch
may occur. In this case, refer to the following general checking points for the
linear encoder to confirm the installation.
Check that the gap between the head and scale is proper.
Check the scale head for rolling and yawing (looseness of scale head section).
Check the scale surface for contamination and scratches.
Check that the vibration and temperature are within the specified range.
Check that the speed is within the permissible range without overshooting.

1. LINEAR ENCODER
1 - 2
1.1 Compatible linear encoder list
Scale type Manufacturer Model Resolution
Rated
speed
(Note 1)
Effective
measurement
length
(maximum)
(Note 2)
Communication
method
Absolute
position
detection
system
SR77 2040 mm
Magnescale SR87
0.05 µm/
0.01 µm 3.3 m/s 3040 mm Two-wire type
AT343A 2.0 m/s 3000 mm
AT543A-SC
0.05 µm 2.5 m/s 2200 mm
AT545A-SC
20 µm/4096
(approx. 0.005 µm) 2.5 m/s 2200 mm
Mitutoyo ST741A
ST742A
0.5 µm
Absolute
type ST743A
Two-wire type
ST744A
4.0 m/s 6000 mm
ST748A
0.1 µm
Renishaw RESOLUTE RL40M 1 nm/50 nm 4.0 m/s 10000 mm Two-wire type
0.05 µm
LC 493M 0.01 µm 2040 mm
Heidenhain 0.05 µm 3.0 m/s
Mitsubishi
serial interface
compatibility
LC 193M 0.01 µm 4240 mm
Four-wire
type
0.05 µm
SR75 0.01 µm 2040 mm
0.05 µm
3.3 m/s
Magnescale SR85 0.01 µm 3040 mm Two-wire type
SL710 +
PL101-RM/RHM 0.1 µm 4.0 m/s 100000 mm
Incremental
type RGH26P 5 µm 4.0 m/s
Renishaw RGH26Q 1 µm 3.2 m/s 70000 mm Two-wire type
RGH26R 0.5 µm 1.6 m/s
LIDA 485 + EIB 392M 30040 mm
Heidenhain LIDA 487 + EIB 392M
20 µm/16384
(approx. 1.22 nm) 4.0 m/s 6040 mm
Four-wire
type
ABZ-phase
differential
output
Incremental
type Not specified 0.001 µm to 5 µm (Note 3)
Linear
encoder
dependent
Linear
encoder
dependent
A/B/Z-phase
differential
output type
Note 1. The indicated value is the rated speed of linear encoder when combined with MR-J4 servo amplifier. It may be different from
the specifications of each manufacturer.
2. The indicated value is the specification value of manufacturer. The encoder cable length between the linear encoder and the
servo amplifier is maximum 30 m.
3. Please select a linear encoder within the range.

1. LINEAR ENCODER
1 - 3
The following table shows connectors of servo amplifiers to connect a linear encoder.
(1) Combination with an MR-J4-_A(-RJ), MR-J4-_B(-RJ), and MR-J4W_-_B servo amplifiers
External connection connector
Operation
mode
External encoder
communication
method MR-J4-_A MR-J4-_A-RJ MR-J4-_B MR-J4-_B-RJ MR-J4W2-_B MR-J4W3-_B
Two-wire type
Four-wire type
CN2
(Note 1, 6)
CN2
(Note 1)
CN2
(Note 1)
CN2
(Note 1)
CN2A
(Note 1)
CN2B
(Note 1)
CN2A
(Note 1)
CN2B
(Note 1)
CN2C
(Note 1)
Linear servo
motor system
A/B/Z-phase
differential output
type
CN2L
(Note 8) CN2L
(Note 8)
Two-wire type CN2
(Note 2, 3, 6)
CN2
(Note 2, 3, 5)
CN2A
(Note 2, 4, 5)
CN2B
(Note 2, 4, 5)
Four-wire type
Fully closed
loop system
A/B/Z-phase
differential output
type
CN2L CN2L
Two-wire type CN2
(Note 2, 3, 7)
CN2A
(Note 2, 4, 7)
CN2B
(Note 2, 4, 7)
Four-wire type
Scale
measurement
function
A/B/Z-phase
differential output
type
CN2L
(Note 7)
Note 1. The MR-J4THCBL03M branch cable is necessary.
2. The MR-J4FCCBL03M branch cable is necessary.
3. When the communication method of the servo motor encoder is four-wire type, MR-J4-_A and MR-J4-_B cannot be used. Use
an MR-J4-_A-RJ or MR-J4-_B-RJ.
4. When the communication method of the servo motor encoder is four-wire type, MR-J4W2-_B cannot be used. Use an MR-J4-
_B-RJ.
5. Supported by servo amplifiers with software version A3 or above.
6. Supported by servo amplifiers with software version A5 or above.
7. Supported by servo amplifiers with software version A8 or above.
8. Connect a thermistor to CN2.

1. LINEAR ENCODER
1 - 4
(2) Combination with an MR-J4-_A4(-RJ) and MR-J4-_B4(-RJ) servo amplifiers
External connection connector
Operation
mode
External encoder
communication
method MR-J4-_A4 MR-J4-_A4-RJ MR-J4-_B4 MR-J4-_B4-RJ
Two-wire type
Four-wire type
CN2
(Note 1)
CN2
(Note 1)
CN2
(Note 1)
CN2
(Note 1)
Linear servo
motor system A/B/Z-phase
differential output
type
CN2L
(Note 5) CN2L
(Note 5)
Two-wire type CN2
(Note 2, 3)
CN2
(Note 2, 3)
Four-wire type
Fully closed
loop system A/B/Z-phase
differential output
type
CN2L CN2L
Two-wire type CN2
(Note 2, 3, 4)
Four-wire type
Scale
measurement
function A/B/Z-phase
differential output
type
CN2L
(Note 4)
Note 1. The MR-J4THCBL03M branch cable is necessary.
2. The MR-J4FCCBL03M branch cable is necessary.
3. When the communication method of the servo motor encoder is four-wire type, MR-J4-_A4 and MR-J4-_B4 cannot be used.
Use an MR-J4-_A4-RJ or MR-J4-_B4-RJ.
4. Supported by servo amplifiers with software version A8 or above.
5. Connect a thermistor to CN2.

1. LINEAR ENCODER
1 - 5
1.2 Linear encoder manufactured by Mitutoyo (absolute type)
POINT
When the absolute position detection system is configured, the absolute position
battery is not required.
1.2.1 AT343A
(1) Cable composition
Prepare a cable based on the following configuration diagram.
(a) For the linear servo motor
1) MR-J4-_A_, MR-J4-_B_, or MR-J4W_-_B servo amplifier
Thermistor of linear servo motor
Branch cable
CN2B
CN2A
CN2
CN2C
MR-J4W_-_B
servo amplifier
MR-J4-_A_
or
MR-J4-_B_
servo amplifier
(Note 1)
Linear encoder
AT343A
2)
1)
3)
Encoder cable 1
CN2 4) SCALE
THM
or
(Note 3)
Thermistor of linear servo motor
Encoder cable 2
5)
Branch cable Encoder cable Output cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
4) MR-J4THCBL03M
(Refer to section
2.4.)
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
When not using a
branch cable
5) Connector set MR-ECNM
(Refer to (2) (b) of this
section.)
3) Options manufactured by
Mitutoyo (Note 2)
Part No.09BAA598A: 0.2 m
Part No.09BAA598B: 2 m
Part No.09BAA598C: 3 m
Note 1. The connection to CN2C is for the MR-J4 3-axis servo amplifier. MR-J4 2-axis servo amplifier does not
have CN2C.
2. It should be prepared by the customer.
3. For connectors for thermistor signals, change how to connect depending on the customer's system.

1. LINEAR ENCODER
1 - 6
2) MR-J4-_A_-RJ or MR-J4-_B_-RJ servo amplifier
Thermistor of linear servo motor
Branch cable
CN2
CN2L
MR-J4-_A_-RJ
or
MR-J4-_B_-RJ
servo amplifier Linear encoder
AT343A
2)
1)
3)
Thermistor of linear servo motor
Encoder cable 1
CN2 4) SCALE
THM (Note 2)
5)
Encoder cable 2
Branch cable Encoder cable Output cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
4) MR-J4THCBL03M
(Refer to section
2.4.)
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
When not using a
branch cable
5) Connector set MR-ECNM
(Refer to (2) (b) of this
section.)
3) Options manufactured by
Mitutoyo (Note 1)
Part No.09BAA598A: 0.2 m
Part No.09BAA598B: 2 m
Part No.09BAA598C: 3 m
Note 1. It should be prepared by the customer.
2. For connectors for thermistor signals, change how to connect depending on the customer's system.
(b) For the fully closed loop system and scale measurement function
1) MR-J4-_A_, MR-J4-_B_, or MR-J4W2-_B servo amplifier
MR-J4-_A_
or
MR-J4-_B_
servo amplifier Linear encoder
AT343A
Encoder cable 1
Branch cable
CN2 4) SCALE
MOTOR
2)
3)
1)
Encoder of rotary servo motor
CN2B
CN2A
CN2
MR-J4W2-_B
servo amplifier
or
Branch cable Encoder cable Output cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
4) MR-J4FCCBL03M
(Refer to section
2.5.)
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
3) Options manufactured by
Mitutoyo (Note)
Part No.09BAA598A: 0.2 m
Part No.09BAA598B: 2 m
Part No.09BAA598C: 3 m
Note. It should be prepared by the customer.

1. LINEAR ENCODER
1 - 7
2) MR-J4-_A_-RJ or MR-J4-_B_-RJ servo amplifier
1)
Encoder of rotary servo motor
MR-J4-_A_-RJ
or
MR-J4-_B_-RJ
servo amplifier
CN2
CN2L Linear encoder
AT343A
2)
3)
Encoder cable 1
Encoder cable Output cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
3) Options manufactured by
Mitutoyo (Note)
Part No.09BAA598A: 0.2 m
Part No.09BAA598B: 2 m
Part No.09BAA598C: 3 m
Note. It should be prepared by the customer.

1. LINEAR ENCODER
1 - 8
(2) Production of encoder cable
Produce the encoder cable using MR-ECNM as shown below. The encoder cable can be produced as
the length of maximum 30 m. The following diagram shows a connecting example of more than 5 m to
10 m.
(a) Encoder cable 1
View seen from wiring side.
1
P5
379
4
MRR
2
LG
8610
5
or
4
MRR
2
LG 8
6
1
P5
5
10
37
9
View seen from wiring side.
MR
MR
Receptacle: 36210-0100PL
Shell kit: 36310-3200-008
(3M)
Connector set: 54599-1019
(Molex)
(Note 2)
(Note 2)
P5
LG
1
2
MR
MRR
3
4
7
Servo amplifier side Linear encoder side
SD Plate
1
2
8
9
LG
RQ
/RQ
FG
P5
(Note 1)
(Note 2)
RQ
123
/RQ
456
P5
789
LG FG
View seen from wiring side.
Housing: 1-172161-9
Connector pin: 170359-1
(TE Connectivity or
equivalent)
Cable clamp: MTI-0002
(Toa Electric Industry)
Note 1. We recommend the following specifications encoder cables.
Wiring length Number of LG and P5 connections
(when the output cable is 3 m or less) Cable size
to 5 m 1-pair
to 10 m 2-pair
to 20 m 3-pair AWG 22
to 30 m 5-pair
2. For the CN2L connector, signals of pin 3 and pin 4 will be as follows.
Pin 3: MR2 Pin 4: MRR2

1. LINEAR ENCODER
1 - 9
(b) Encoder cable 2
View seen from wiring side.
or
View seen from wiring side.
Receptacle: 36210-0100PL
Shell kit: 36310-3200-008
(3M)
Connector set: 54599-1019
(Molex)
THM2
THM1
1
P5
379
4
MRR
2
LG
8610
5
4
MRR
THM2
THM1
2
LG 8
6
1
P5
5
10
37
9
MR
MR
P5
LG
1
2
MR
MRR
3
4
THM1
THM2
5
6
7
Servo amplifier side Linear encoder side
1
2
8LG
RQ
/RQ
P5
SD Plate 9 FG
(Note 1)
AWG 24 to 20
Thermistor of
linear servo
motor (Note 2)
View seen from wiring side.
Housing: 1-172161-9
Connector pin: 170359-1
(TE Connectivity or
equivalent)
Cable clamp: MTI-0002
(Toa Electric Industry)
RQ
123
/RQ
456
P5
789
LG FG
Note 1. We recommend the following specifications encoder cables.
Wiring length Number of LG and P5 connections
(when the output cable is 3 m or less) Cable size
to 5 m 1-pair
to 10 m 2-pair
to 20 m 3-pair AWG 22
to 30 m 5-pair
2. For wiring to the thermistor of the linear servo motor, refer to "Linear Servo Motor Instruction Manual".

1. LINEAR ENCODER
1 - 10
1.2.2 AT543A-SC/AT545A-SC
(1) Cable composition
Prepare a cable based on the following configuration diagram.
(a) For the linear servo motor
1) MR-J4-_A_, MR-J4-_B_, or MR-J4W_-_B servo amplifier
Linear encoder
AT543A-SC or AT545A-SC
2)
1)
Encoder cable 1
Thermistor of linear servo motor
Branch cable
CN2B
CN2A
CN2
CN2C
MR-J4W_-_B
servo amplifier
(Note 1)
CN2 3) SCALE
THM
or
Output cable Head cable
Thermistor of linear servo motor
4)
(Note 2)
MR-J4-_A_
or
MR-J4-_B_
servo amplifier
Encoder cable 2
Branch cable Encoder cable Output cable Head cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
3) MR-J4THCBL03M
(Refer to section
2.4.)
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
When not using a
branch cable
4) Connector set MR-ECNM
(Refer to (2) (b) of this
section.)
Accessories for linear
encoder
Cable length: 3 m
Accessories for linear
encoder
Cable length: 2 m
Note 1. The connection to CN2C is for the MR-J4 3-axis servo amplifier. MR-J4 2-axis servo amplifier does not have CN2C.
2. For connectors for thermistor signals, change how to connect depending on the customer's system.

1. LINEAR ENCODER
1 - 11
2) MR-J4-_A_-RJ or MR-J4-_B_-RJ servo amplifier
MR-J4-_A_-RJ
or
MR-J4-_B_-RJ
servo amplifier Linear encoder
AT543A-SC or AT545A-SC
2)
Output cable Head cable
1)
Encoder cable 1
Thermistor of linear servo motor
Branch cable
CN2
CN2L
CN2 3) SCALE
THM (Note)
Thermistor of linear servo motor
4)
Encoder cable 2
Branch cable Encoder cable Output cable Head cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
3) MR-J4THCBL03M
(Refer to section
2.4.)
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
When not using a
branch cable
4) Connector set MR-ECNM
(Refer to (2) (b) of this
section.)
Accessories for linear
encoder
Cable length: 3 m
Accessories for linear
encoder
Cable length: 2 m
Note. For connectors for thermistor signals, change how to connect depending on the customer's system.
(b) For the fully closed loop system and scale measurement function
1) MR-J4-_A_, MR-J4-_B_, or MR-J4W2-_B servo amplifier
MR-J4-_A_
or
MR-J4-_B_
servo amplifier Encoder cable 1
Branch cable
Encoder of rotary servo motor
CN2B
CN2A
CN2
MR-J4W2-_B
servo amplifier
or
2)
Output cable Head cable
1)
CN2 3) SCALE
MOTOR
Linear encoder
AT543A-SC or AT545A-SC
Branch cable Encoder cable Output cable Head cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
3) MR-J4FCCBL03M
(Refer to section
2.5.)
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
Accessories for linear
encoder
Cable length: 3 m
Accessories for linear
encoder
Cable length: 2 m

1. LINEAR ENCODER
1 - 12
2) MR-J4-_A_-RJ or MR-J4-_B_-RJ servo amplifier
MR-J4-_A_-RJ
or
MR-J4-_B_-RJ
servo amplifier
Encoder of rotary servo motor
CN2
2)
1)
Encoder cable 1
CN2L Linear encoder
AT543A-SC or AT545A-SC
Output cable Head cable
Encoder cable Output cable Head cable
When using an
optional encoder
cable
1) MR-EKCBL_M-H
2 m/5 m (Refer to section
2.1.)
When fabricating
the encoder cable
2) Connector set MR-ECNM
(Refer to (2) (a) of this
section.)
Accessories for linear
encoder
Cable length: 3 m
Accessories for linear
encoder
Cable length: 2 m

1. LINEAR ENCODER
1 - 13
(2) Production of encoder cable
Produce the encoder cable using MR-ECNM as shown below. The encoder cable can be produced as
the length of maximum 30 m. The following diagram shows a connecting example of more than 5 m to
10 m.
(a) Encoder cable 1
View seen from wiring side.
1
P5
379
4
MRR
2
LG
8610
5
or
4
MRR
2
LG 8
6
1
P5
5
10
37
9
View seen from wiring side.
MR
MR
Connector set: 54599-1019
(Molex)
Receptacle: 36210-0100PL
Shell kit: 36310-3200-008
(3M) (Note 2)
(Note 2)
P5
LG
1
2
MR
MRR
3
4
7
Servo amplifier side Linear encoder side
SD Plate
1
2
8
9
LG (0 V)
RQ
/RQ
FG
P5 (+5 V)
(Note 1)
(Note 2)
P5
(+5 V) LG (0 V)
RQ
123
/RQ
456
789
FG
View seen from wiring side.
Housing: 1-172161-9
Connector pin: 170359-1
(TE Connectivity or
equivalent)
Cable clamp: MTI-0002
(Toa Electric Industry)
Note 1. We recommend the following specifications encoder cables.
Wiring length Number of LG and P5 connections
(when the output cable is 3 m or less) Cable size
to 5 m 1-pair
to 10 m 2-pair
to 20 m 4-pair AWG 22
to 30 m 5-pair
2. For the CN2L connector, signals of pin 3 and pin 4 will be as follows.
Pin 3: MR2 Pin 4: MRR2

1. LINEAR ENCODER
1 - 14
(b) Encoder cable 2
View seen from wiring side.
or
View seen from wiring side.
Connector set: 54599-1019
(Molex)
Receptacle: 36210-0100PL
Shell kit: 36310-3200-008
(3M)
THM2
THM1
1
P5
379
4
MRR
2
LG
8610
5
4
MRR
THM2
THM1
2
LG 8
6
1
P5
5
10
37
9
MR
MR
P5
LG
1
2
MR
MRR
3
4
THM1
THM2
5
6
7
Servo amplifier side Linear encoder side
1
2
8LG
RQ
/RQ
P5
SD Plate 9 FG
(Note 1)
AWG 24 to 20
Thermistor of
linear servo
motor (Note 2)
LG (0 V)
P5 (+5 V)
View seen from wiring side.
Housing: 1-172161-9
Connector pin: 170359-1
(TE Connectivity or
equivalent)
Cable clamp: MTI-0002
(Toa Electric Industry)
1
RQ
23
/RQ
456
P5
(+5 V)
789
LG
(0 V) FG
Note 1. We recommend the following specifications encoder cables.
Wiring length Number of LG and P5 connections
(when the output cable is 3 m or less) Cable size
to 5 m 1-pair
to 10 m 2-pair
to 20 m 4-pair AWG 22
to 30 m 5-pair
2. For wiring to the thermistor of the linear servo motor, refer to "Linear Servo Motor Instruction Manual".

1. LINEAR ENCODER
1 - 15
1.2.3 ST741A/ST742A/ST743A/ST744A
(1) Cable composition
Prepare a cable based on the following configuration diagram.
(a) For the linear servo motor
1) MR-J4-_A_, MR-J4-_B_, or MR-J4W_-_B servo amplifier
Personal
computer
Software for
signal adjustment Conversion unit
For the signal adjustment and confirmation, connect the following equipments. (Note 3)
Head cable
Linear encoder
ST741A, ST742A, ST743A,
ST744A or ST748A
Encoder cable 1
Thermistor of linear servo motor
Branch cable
MR-J4W_-_B
servo amplifier
(Note 1)
or
MR-J4-_A_
or
MR-J4-_B_
servo amplifier
2) 3)
1)
CN2B
CN2A
CN2
CN2C
4) SCALECN2
3)5)
Thermistor of linear servo motor
THM (Note 4)
Encoder cable 2
Branch cable Encoder cable Head cable
When using an
optional encoder
cable
1) Options manufactured by Mitutoyo (Note 2)
Part No.06ACF117A: 5 m
Part No.06ACF117B: 10 m
When fabricating
the encoder cable
4) MR-J4THCBL03M
(Refer to section
2.4.)
2) Connector set MR-J3CN2
(Refer to (2) (a) of this
section.)
When not using a
branch cable
5) Connector set MR-J3CN2
(Refer to (2) (b) of this
section.)
3) Junction connector (Note 2)
D-SUB (female) 15 pin
Shell: HDAB-15S
Plug case: HDA-CTH
(manufactured by Hirose
Electric)
Accessories for linear
encoder
Cable length: 1 m
Note 1. The connection to CN2C is for the MR-J4 3-axis servo amplifier. MR-J4 2-axis servo amplifier does not have CN2C.
2. It should be prepared by the customer.
3. When mounting ST741A, ST742A, ST743A, ST744A or ST748A, a personal computer (with RS-232C port) for the signal
adjustment and confirmation, and a software and conversion unit for signal adjustment are required. For details, contact
Mitutoyo.
4. For connectors for thermistor signals, change how to connect depending on the customer's system.