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Options and auxiliary equipment – MITSUBISHI ELECTRIC MELSERVO MR-J2S- A User Manual

Page 230

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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 brake resistor
and fit the regenerative brake option across P-C.
The G3 and G4 terminals act as a thermal sensor. G3-G4 are opened when the regenerative brake
option overheats abnormally.

P

P

C

G3

(Note 2)

5m(16.4ft) or less

G4

C

Servo amplifier

Always remove wiring (across P-C) of servo
amplifier built-in regenerative brake resistor.

Regenerative brake option

Fan (Note 1)

Note 1. When using the MR-RB50 MR-RB51, forcibly cool it with a cooling fan (1.0m

3

/min, 92 or so).

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 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

For MR-J2S-500A

For MR-J2S-700A

Accessory screw

Accessory screw