Connection Of Regenerative Option - Mitsubishi Electric MR-J4W2-0303B6 Instruction Manual

11. OPTIONS AND PERIPHERAL EQUIPMENT

11.2.4 Connection of regenerative option

The regenerative option generates heat of 100 ˚C higher than the ambient temperature. Fully consider heat
dissipation, installation position, wires used, etc. before installing the option. For wiring, use flame-resistant
wires or make the wires flame-resistant and keep them away from the regenerative option. Use twisted wires
of up to 5 m for connecting the servo amplifier.
Connect the regenerative option to P+ and C. G3 and G4 are thermal sensor's terminals. Between G3 and
G4 is opened when the regenerative option overheats abnormally.
POINT
For the sizes of wires used for wiring, refer to section 11.5.
Always remove wiring across P+ - D.
Servo amplifier
P+
C
D
Note 1. When the ambient temperature is more than 55 °C and the regenerative load ratio
is more than 60% in MR-RB34 and MR-RB3N, forcefully cool the air with a
cooling fan (1.0 m
the ambient temperature is 35 °C or less. (A cooling fan is required for the
shaded area in the following graph.)
100
60
0
A cooling fan is not required for MR-RB14.
2. Make up a sequence which will switch off the magnetic contactor when abnormal
heating occurs.
G3-G4 contact specifications
Maximum voltage: 120 V AC/DC
Maximum current: 0.5 A/4.8 V DC
Maximum capacity: 2.4 VA
Regenerative option
P
C
G3
(Note 2)
G4
5 m or less
(Note 1)
Cooling fan
3 /min or more, 92 mm × 92 mm). A cooling fan is not required if
A cooling fan is required.
A cooling fan is
not required.
35
0
Ambient temperature [
11 - 11
55
]