Mitsubishi Electric MR-J3-10B Instruction Manual page 186

11. OPTIONS AND AUXILIARY EQUIPMENT
(b) MR-J3-500B MR-J3-700B
Always remove the wiring (across P-C) of the servo amplifier built-in regenerative brake resistor and fit
the regenerative brake option across P-C.
The G3 and G4 terminals act as a thermal protector. G3-G4 are opened when the regenerative brake
option overheats abnormally.
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When using the regenerative brake resistor option, remove the servo amplifier's built-in regenerative
brake resistor terminals (across P-C), fit them back to back, and secure them to the frame with the
accessory screw as shown below.
Mounting method
Accessory screw
Always remove wiring (across P-C) of servo
amplifier built-in regenerative brake resistor.
Servo amplifier
Regenerative brake option
P
C
(Note 2)
5m(16.4ft) or less
Note 1. When using the MR-RB51, forcibly cool it with a cooling fan (1.0m
2. Make up a sequence which will switch off the magnetic contactor (MC)
when abnormal heating occurs.
G3-G4 contact specifications
Maximum voltage: 120V AC/DC
Maximum current: 0.5A/4.8VDC
Maximum capacity: 2.4VA
P
C
G3
G4
Fan (Note 1)
11 - 23
3 /min, 92 or so).