11. OPTIONS AND AUXILIARY EQUIPMENT
11 - 12
(1) MR-J4-500A(-RJ) or less/MR-J4-350A4(-RJ) or less
Always remove the wiring from across P+ to D and fit the regenerative option across P+ to C. G3 and
G4 are thermal sensor's terminals. Between G3 and G4 is opened when the regenerative option
overheats abnormally.
D
P+
C
G4
G3
C
P
Regenerative option
5 m or less
Servo amplifier
Always remove the lead from across P+ to D.
(Note 3)
Cooling fan
(Note 1, 2)
Note 1.
When using the MR-RB50, MR-RB5N, MR-RB51, MR-RB3M-4, MR-RB3G-4, or
MR-RB5G-4, forcibly cool it with a cooling fan (92 mm × 92 mm, minimum air
flow: 1.0 m
3
).
2. When the ambient temperature is more than 55 °C and the regenerative load ratio
is more than 60% in MR-RB30, MR-RB-31, MR-RB32 and MR-RB3N, forcefully
cool the air with a cooling fan (1.0 m
3
/min or more, 92 mm × 92 mm). A cooling
fan is not required if the ambient temperature is 35 °C or less. (A cooling fan is
required for the shaded area in the following graph.)
100
60
0
0
Ambient temperature [°C]
35 55
A cooling fan is
not required.
A cooling fan is required.
Load ratio [%]
3. 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
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