168
6 OPTIONS AND PERIPHERAL EQUIPMENT
6.2 Regenerative option
Servo parameter setting
Set [Pr. PA02] according to the regenerative option to be used.
MR-J5-G/MR-J5W-G User's Manual (Parameters)
MR-J5-A User's Manual (Parameters)
Connection of regenerative option
If using the MR-RB50, MR-RB51, or MR-RB5N, a cooling fan is required for cooling. The cooling fan should
be prepared by the customer.
For the wire sizes, refer to the following.
Page 197 Selection example of wires
The regenerative option generates heat that is 100 °C higher than the ambient temperature. Fully consider heat dissipation,
the installation position, wires used, and other relevant areas before installing the option. For wiring, use flame-retardant wires
or make the wires flame retardant, and do not let them touch the regenerative option. Use twisted wires with a maximum
length of 5 m for a connection with the servo amplifier.
For servo amplifiers of 7 kW or less
Remove the wiring between P+ and D and install the regenerative option between P+ and C. G3 and G4 are terminals for the
thermal sensor. Between G3 and G4 opens if the regenerative option overheats abnormally.
*1 When using the MR-RB50, MR-RB51, or MR-RB5N, forcibly cool it with a cooling fan (1.0 m
3
/min or more, 92 mm × 92 mm).
*2 When using the MR-RB30, MR-RB31, MR-RB34, or MR-RB3N, forcibly cool it with a cooling fan (1.0 m
3
/min or more, 92 mm × 92 mm)
if the ambient temperature exceeds 55 °C and the regenerative load ratio exceeds 60 %. 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.)
*3 Configure 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
D
P+
C
G4
G3
C
P
*3
*1*2
×
×
Disconnect between P+ and D terminals.
Servo amplifier
Regenerative option
5 m or less
Cooling fan
100
60
0
0
35
55
A cooling fan is required.
Load ratio [%]
A cooling fan is
not required.
Ambient temperature [°C]
Summary of Contents for Melservo-J5 MR-J5 Series
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