Specifications

2-axis AC Servo Amplifier MR-J3W-0303BN6
AC Servo Motor HG-AK Series
4
2-axis AC Servo Amplifier MR-J3W-0303BN6
AC Servo Motor HG-AK Series
MR-J3W-0303BN6 Standard Wiring Diagram Example
R
A
4
U
DICOM
DOCOM
23
26
EM1
10
DI1-A
7
DI2-A
8
DI3-A 9
DI1-B
20
DI2-B
21
DI3-B 22
3
16
4
17
LA-A
14
LAR-A
LB-A
LBR-A
LG
2
MO1
15
MO2
1
LG
SD Plate
5
18
6
19
LA-B
LAR-B
LB-B
LBR-B
ALM-A
11
ALM-B
24
CN3
Output voltage: 10 V ± 5 V
Maximum output current: 1 mA
Output voltage: 10 V ± 5 V
Maximum output current: 1 mA
Analog monitor output
A-axis encoder A-phase pulse
(differential line driver)
A-axis encoder B-phase pulse
(differential line driver)
B-axis encoder A-phase pulse
(differential line driver)
B-axis encoder B-phase pulse
(differential line driver)
Control common
2 m or shorter
10 m or shorter
10 m or shorter
Forced stop
A-axis upper stroke limit (FLS)
A-axis lower stroke limit (RLS)
A-axis proximity dog (DOG)
B-axis upper stroke limit (FLS)
B-axis lower stroke limit (RLS)
B-axis proximity dog (DOG)
(Note 2)
(Note 3)
(Note 4)
(Note 10)
R
A
1
R
A
2
Servo amplifier
MR-J3W-0303BN6
3rd and 4th axis
(Note 7)
Servo amplifier
MR-J3W-0303BN6
(Note 7)
MR-J3BUS_M,
MR-J3BUS_M-A/-B cable
MR-J3BUS_M,
MR-J3BUS_M-A/-B cable
Attach a cap to the
unused connector.
Setup software
SW1DNC-MRC2-E or
MRZJW3-SETUP221E
Personal computer
USB cable
MR-J3USBCBL3M
CN1B CN5
(Note 6)
Controller
SW2
(Note 11)
SW1
(Note 8)
CN1B CN1ACN1B CN1A
MR-J3BUS_M,
MR-J3BUS_M-A/-B cable
24 V DC power supply
for interface
A-axis malfunction
B-axis malfunction
(Note 13)
(Note 9)
(Note 5)
CN1A
1
0
2
Q173DCPU
Q172DCPU
Q173HCPU
Q172HCPU
Q170MCPU
Q170MSCPU (Note 14)
QD77MS (Note 14)
●
●
●
●
●
●
●
QD75MH
QD74MH
LD77MH
FX
3U-20SSC-H
Q173DSCPU (Note 14)
Q172DSCPU (Note 14)
●
●
●
●
●
●
CN4
1
2
BAT
LG
Install the battery set (MR-J3W03BATSET) with
the battery mounting attachment and the battery
extension cable when configuring absolute
position detection system.
RA1
(A-axis)
RA2
(B-axis)
Off
Forced stop
EM1
Controller
forced stop
RA3
Malfunction
On
RA4
RA4
CNP1
24
0
PM
Circuit
protector
24 V DC
48 V DC
U
V
W
(Note 12)
Servo amplifier
MR-J3W-0303BN6
(1st and 2nd axis)
HG-AK
servo motor series
Built-in
regenerative
resistor
(Note 16)
(Note 16)
CNP2A/CNP2B
CN2A/CN2B
4B
1A
1B
5B
5A
4A
4A
1B
1A
5A
5B
4B
4A
1B
1A
5A
5B
4B
P5
LG
MR
MRR
BAT
SD
P5
LG
MR
MRR
BAT
SD
P5
LG
MR
MRR
BAT
SD
B1
B2
2A
1B
2B
3B
1A
3A
U
V
W
B1
B2
2A
1B
2B
3B
1A
3A
Encoder
B
M
24 V DC for the
electromagnetic
brake
(Note １7 )
RA
(Note 1)
(Note 1)
1A
2A
1B
2B
U
V
W
4
3
2
1
(Note 16)
For 48 V DC main circuit
power supply
Circuit
protector
24 V DC
(Note 1)
For 24 V DC main circuit
power supply
MBR-A
12
MBR-B
25
R
A
3
R
A
4
A-axis electromagnetic brake interlock
B-axis electromagnetic brake interlock
Electro-
magnetic
brake
(Note 15)
Contact must be open by
an external emergency stop
switch.
Contact must be open when
the malfunction (ALM-A/-B)
or the electromagnetic brake
interlock (MBR-A/-B) signal
turns off.
(n-1)th and nth
axis
Notes: 1. Use 24 V DC and 48 V DC power supplies with reinforced insulation. Additionally, connect the - side wiring (0 V) to the power supply terminal.
2. Do not reverse the diode's direction. Connecting it backwards may cause the servo amplifier to malfunction such that the signals are not output, and the forced stop and
other safety circuits are inoperable.
3. Use the power supply 24 V DC ± 10% (required current capacity: 0.25 A). 0.25 A is the value when all of the input/output points are used. The current capacity can be
stepped down according to the number of input/output points in use. Refer to "MR-J3W-0303BN6 MR-J3W-

B Servo Amplifier Instruction Manual" for details.
4. The forced stop signal is issued for two axes of the servo amplifier. For overall system, apply the emergency stop on the controller side.
5. ALM-A (A-axis malfunction) and ALM-B (B-axis malfunction) (normally closed contact) are conducted to DOCOM in normal alarm-free condition.
6. For details such as setting the controllers, refer to relevant controllers' programming manual or user's manual.
7. Connections for the third and following axes are omitted.
8. Up to 16 axes (n = 2 to 16) can be set using the axis selection rotary switch (SW1).
9. Devices can be assigned for DI1-A/B, DI2-A/B and DI3-A/B with controller setting. Refer to the controller instruction manuals for details on setting. These devices can be
assigned with the controller: Q173DCPU,Q172DCPU,Q173HCPU,Q172HCPU,Q170MCPU,QD75MH,QD74MH,LD77MH,Q173DSCPU,Q172DSCPU or QD77MS.
10. This is for sink wiring. Source wiring is also possible. Refer to "MR-J3W-0303BN6 MR-J3W-

B Servo Amplifier Instruction Manual" for details.
11. Test operation select switch (SW2-1) is used to perform test operation mode with MR Configurator2 (SW1DNC-MRC2-E) or MR Configurator (MRZJW3-SETUP221E).
SW2-2 is for manufacturer setting.
12. This connection is for continuing operation with one axis when an alarm occurs on the other axis. To stop the operation of the both axes with an alarm on one axis,
connect RA1 and RA2 in series.
13. Output voltage range varies depending on the monitored signal.
14. Use the controller in SSCNET III mode.
15. This is for the servo motor with electromagnetic brake. The electromagnetic brake terminals (B1, B2) do not have polarity.
16. Noiseless grounding ( ) terminals of CNP2A and CNP2B and noiseless grounding ( ) terminal of CNP1 are connected in the servo amplifier. Connect the noiseless
grounding ( ) terminal of CNP1 to the grounding terminal of the cabinet.
17. Do not use the 24 V DC interface power supply for the electromagnetic brake. Provide a dedicated power supply to the electromagnetic brake.