Mitsubishi Electric MR-J2S-CP Instruction Manual page 269

14. OPTIONS AND AUXILIARY EQUIPMENT
(a) Precautions for wiring
The cables between the servo amplifier and the brake unit, and between the resistor unit and the
brake unit should be as short as possible. Always twist the cable longer than 5m (twist five times
or more per one meter). Even when the cable is twisted, the cable should be less than 10m. Using
cables longer than 5m without twisting or twisted cables longer than 10m, may result in the brake
unit malfunction.
Servo amplifier
P
N
5m or less
(b) Cables
1) Cables for the brake unit
For the brake unit, HIV cable (600V grade heat-resistant PVC insulated wire) is recommended.
a) Main circuit terminal
N/
Terminal block
Brake unit Resistor unit
P P P
N PR PR
5m or less
Brake unit
P/ PR
FR-BU2-15K
FR-BU2-30K
Servo amplifier
P Twist
N
10m or less
Main Crimping
circuit terminal
terminal
N/ , P/ ,
screw
PR,
size
M4 5.5-4
M5 5.5-5
14 - 12
Brake unit Resistor unit
P P Twist P
N PR PR
10m or less
Cable size
Tightening
N/ , P/ , PR,
torque
[N m]
HIV cables,
([Ib in]) 2
etc. [mm ]
1.5(13.3) 3.5
2.5(22.1) 5.5
AWG
12
10