Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual page 228

11. OPTIONS AND AUXILIARY EQUIPMENT
(a) MR-J3-350B or less MR-J3-200B4 or less
Always remove the wiring from across P-D and fit the regenerative option across P-C.
The G3 and G4 terminals act as a thermal sensor. G3-G4 is disconnected when the regenerative option
overheats abnormally.
Always remove the lead from across P-D.
Servo amplifier
P
C
D
5m max.
Note 1. When using the MR-RB50 MR-RB3M-4 MR-RB3G-4 MR-RB5G-4, forcibly cool it with a cooling fan (92 92, minimum air
3
flow : 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
For the MR-RB50 MR-RB3M-4 MR-RB3G-4 MR-RB5G-4 install the cooling fan as shown.
Top
Cooling fan
Bottom
Vertical
installation
Regenerative option
P
C
G3
(Note 2)
G4
(Note 1)
Cooling fan
Horizontal installation
Cooling fan installation screw hole dimensions
Terminal block
Thermal relay
Installation surface
11 - 25
[Unit : mm]
2-M3 screw hole
(for cooling fan installation)
Depth 10 or less
(Screw hole already
machined)
82.5 40