Mitsubishi Electric MELSERVO MR-J2S- A Instruction Manual page 236

13. OPTIONS AND AUXILIARY EQUIPMENT
The cables between the servo amplifier and brake unit and between the resistor unit and brake unit
should be as short as possible. The cables longer than 5m(16.404ft) should be twisted. If twisted, the
cables must not be longer than 10m(32.808ft).
The cable size should be equal to or larger than the recommended size. See the brake unit instruction
manual. You cannot connect one set of brake unit to two servo amplifiers or two sets of brake units to
one servo amplifier.
Servo amplifier
P
N
5m (16.404ft)
or less
(3) Outside dimensions
(a) Brake unit (FR-BU)
Control circuit
terminals
Note. Ventilation ports are provided in both side faces and top face. The bottom face is open.
Brake Unit A
100
FR-BU-15K
(3.937)
160
FR-BU-30K
(6.299)
265
FR-BU-55K
(10.433)
Brake unit Resistor unit
P P P
PR
N
PR
5m (16.404ft)
or less
K
Operation
display
Main circuit
terminals
EE
E
AA
A
AA B BA
60 240 225
(2.362) (9.446) (10.039)
90 240 225
(3.543) (9.446) (10.039)
145 240 225
(5.709) (9.446) (10.039)
Servo amplifier
P
N
10m (32.808ft)
D
K
E
C D E
128 6 18.5
(5.039) (0.236) (0.728)
128 6 33.5
(5.039) (0.236) (1.319)
128 58.6
(5.039) (2.307)
13 - 11
Brake unit Resistor unit
Twist. Twist.
P P P
PR
N PR
10m (32.808ft)
or less or less
(Note)
C
EE K F
6 48.5 7.5
(0.236) (1.909) (0.295)
6 78.5 7.5
(0.236) (3.091) (0.295)
6 7.5
(0.236) (0.295)
[Unit : mm(in)]
Approx.
Mass [kg(Ib)]
2.4
(5.291)
3.2
(7.055)
5.8
(12.787)