Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 345

MR-J4-500GF4(-RJ)/MR-J4-700GF(-RJ)/MR-J4-700GF4(-RJ)
Always remove the wiring (across P+ to C) of the servo amplifier built-in regenerative resistor and fit the regenerative option
across P+ to C. G3 and G4 are thermal sensor's terminals. Between G3 and G4 is opened when the regenerative option
overheats abnormally.
Always remove the wiring (across P+ to C) of the servo
amplifier built-in regenerative resistor.
Servo amplifier
P+
C
*2
5 m or less
*1 When using the MR-RB51, MR-RB34-4, MR-RB54-4, MR-RB3U-4, or MR-RB5U-4, forcibly cool it with a cooling fan (1.0 m
more, 92 mm × 92 mm).
*2 Make up a sequence which will switch off the magnetic contactor when abnormal heating occurs.
G3-G4 contact specifications
Maximum voltage: 120 V AC/DC
Maximum current: 0.5 A/4.8 V DC
Maximum capacity: 2.4 VA
When using the regenerative option, remove the servo amplifier's built-in regenerative resistor wires (across P+ to C), fit them
back to back, and secure them to the frame with the accessory screw as shown below.
Built-in regenerative resistor
lead terminal fixing screw
Regenerative option
P
C
G3
G4
*1
Cooling fan
Accessory screw
11 OPTIONS AND PERIPHERAL EQUIPMENT
11.2 Regenerative options
11
3
/min or
343