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14. OPTIONS AND AUXILIARY EQUIPMENT
(4) Connection of the regenerative brake option
The regenerative brake option will generate heat of about 100
. 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 brake option body. Always use twisted cables of max.
5m(16.4ft) length for connection with the servo amplifier.
(a) MR-J2S-350CL or less
Always remove the wiring from across P-D and fit the regenerative brake option across P-C.
The G3 and G4 terminals act as a thermal protector. G3-G4 are disconnected when the
regenerative brake option overheats abnormally.
Servo amplifier
Regenerative brake option
Note: 1. When using the MR-RB50, 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.
(Note2)
5m (16.4 ft) max.
D
P
P
C
G3
G4
C
Always remove the lead from across P-D.
G3-G4 contact specifications
Maximum voltage: 120V AC/DC
Maximum current: 0.5A/4.8VDC
Maximum capacity: 2.4VA
Fan (Note 1)
For the MR-RB50 install the cooling fan as shown.
82.5 40 (1.58)
82.5
133
Fan installation screw hole dimensions
2-M3 screw hole
(for fan installation)
Depth 10 or less
(Screw hole already
machined)
Recommended fan:
Toyo Denki's TL396A or equivalent
Fan Terminal block
Thermal relay
Installation surface
Horizontal installation
Vertical
installation
Top
Bottom
(3.25)
(5.24)
(3.25)
[Unit : mm(in)]