MITSUBISHI ELECTRIC MR-J2S- A - Manual (Page 234)

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13. OPTIONS AND AUXILIARY EQUIPMENT
(b) MR-J2S-500A MR-J2S-700A
Always remove the wiring (across P-C) of the servo amplifier built-in regenerative resistor and fit
the regenerative option across P-C.
The G3 and G4 terminals act as a thermal sensor. G3-G4 are opened when the regenerative option
overheats abnormally.
Servo amplifier
Regenerative option
Always remove wiring (across P-C) of servo
amplifier built-in regenerative resistor.
P
C
G4
G3
(Note 2)
5m(16.4ft) or less
Cooling fan(Note 1)
C
P
Note 1. When using the MR-RB50 MR-RB51, forcibly cool it with a cooling fan (92 92, minimum air flow: 1.0m 3 ).
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
When using the regenerative resistor option, remove the servo amplifier's built-in regenerative
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
For MR-J2S-500A For MR-J2S-700A
Accessory screw
Accessory screw