Mitsubishi Electric MR-J2S-*A, Instruction Manual

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13. OPTIONS AND AUXILIARY EQUIPMENT
(4) Connection of the regenerative option
POINT
When the MR-RB50 MR-RB51 is used, a cooling fan is required to cool it.
The cooling fan should be prepared by the customer.
The regenerative option will cause a temperature rise of 100 relative to the ambient temperature.
Fully examine heat dissipation, installation position, used cables, etc. before installing the option. For
wiring, use flame-resistant cables and keep them clear of the regenerative option body. Always use
twisted cables of max. 5m (16.4ft) length for connection with the servo amplifier.
(a) MR-J2S-350A 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 opened when the regenerative option
overheats abnormally.
Servo amplifier
Regenerative option
Always remove the lead from across P-D.
D
P
C
G4
G3
(Note 2)
5m (16.4 ft) or less
Cooling fan(Note 1)
C
P
Note 1. When using the MR-RB50, 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
For the MR-RB50 install the cooling fan as shown.
82.5 40 (1.58)
82.5
13
3
Cooling fan installation screw hole dimensions
2-M3 screw hole
(for cooling fan installation)
Depth 10 or less
(Screw hole already
machined)
Cooling fan Terminal block
Thermal relay
Installation surface
Horizontal installation
Vertical
installation
Top
Bottom
(3
.2
5
)
(5.
24)
(3.25)
[Unit : mm(in)]