Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 344

MR-J4-500GF(-RJ) or less/MR-J4-350GF4(-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.
Always remove the lead from across P+ to D.
Servo amplifier
P+
C
D
5 m or less
*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 (1.0 m
min or more, 92 mm × 92 mm).
*2 When the ambient temperature is more than 55  and the regenerative load ratio is more than 60% in MR-RB30, MR-RB31, MR-RB32,
and MR-RB3N, forcefully cool the air with a cooling fan (1.0 m
ambient temperature is 35  or less. (A cooling fan is required for the shaded area in the following graph.)
100
60
A cooling fan is
not required.
0
0
Ambient temperature [°C]
*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
11 OPTIONS AND PERIPHERAL EQUIPMENT
342
11.2 Regenerative options
Regenerative option
P
C
G3
*3
G4
*1*2
Cooling fan
A cooling fan is required.
35 55
3
/min or more, 92 mm × 92 mm). A cooling fan is not required if the
3
/