Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

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11. OPTIONS AND AUXILIARY EQUIPMENT
11 - 28
(3) Parameter setting
Set parameter No.PA02 according to the option to be used.
Selection of regenerative option
00: Regenerative option is not used (built-in regenerative resistor is used)
0D: MR-RB14
0E: MR-RB34
10: MR-RB3B
0 0
Parameter No.PA02
(4) Connection of the regenerative option
POINT
For the sizes of wires used for wiring, refer to section 11.5.
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 wires and keep them clear of the regenerative option body. Always use twisted cables of
max. 5m length for connection with the servo amplifier.
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.
D
P
C
G4
G3
C
P
Regenerative option
5m or less
Servo amplifier
Always remove the lead from across P -D.
(Note 2)
Cooling fan
(Note 1)
Note 1. When the ambient temperature is more than 55 and the regenerative load ratio is
more than 60 in MR-RB34 and MR-RB3B, forcefully cool the air with a cooling fan
(1.0m
3
/min or more, 92mm 92mm). A cooling fan is not required if the ambient
temperature is 35 or less.
Lord ra
tio [
]
100
60
0
0
Ambient temperature [ ]
35 55
A cooling fan is
not required
A cooling fan is required
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: 120V AC/DC
Maximum current: 0.5A/4.8VDC
Maximum capacity: 2.4VA