Mitsubishi Electric MR-J2S-A Instruction Manual page 233

13. OPTIONS AND AUXILIARY EQUIPMENT
(4) Connection of the regenerative option
The regenerative option will cause a temperature rise of
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.
Always remove the lead from across P-D.
Servo amplifier
D
P
C
(Note 2)
5m (16.4 ft) or less
Note 1. When using the MR-RB50, forcibly cool it with a cooling fan (92 92, minimum air 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 install the cooling fan as shown.
Top
Cooling fan
Bottom
Vertical
installation
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.
Regenerative option
P
C
G3
G4
Cooling fan(Note 1)
Terminal block
Installation surface
Horizontal installation
13 - 4
WWW.NNC.IR
100 relative to the ambient temperature.
Cooling fan installation screw hole dimensions
Thermal relay
82.5
(3.25)
3
).
[Unit : mm(in)]
2-M3 screw hole
(for cooling fan installation)
Depth 10 or less
(Screw hole already
machined)
40 (1.58)