Servo Parameter Setting; Connection Of Regenerative Option - Mitsubishi Electric MR-J5 Series User Manual

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

When MR-RB50 or MR-RB5N is used, a cooling fan is required to cool it. The cooling fan should be prepared
by the customer.
For the wire sizes used for wiring, refer to the following.
Page 166 Selection example of wires
The regenerative option generates heat of 100 °C higher than the ambient temperature. Fully consider heat dissipation,
installation position, wires used, or others 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 3.5 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.
Disconnect between P+ and D terminals.
Servo amplifier
P+
×
C
×
D
5 m or less
*1 When using the MR-RB50 or MR-RB5N, forcibly cool it with a cooling fan (1.0 m
*2 When MR-RB30, MR-RB34, or MR-RB3N is used, forcibly cool it with a cooling fan (1.0 m
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.)
100
60
A cooling fan is
not required.
0
0
Ambient temperature [°C]
*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
6 OPTIONS AND PERIPHERAL EQUIPMENT
144
6.2 Regenerative option
Regenerative option
P
C
G3
*3
G4
*1*2
Cooling fan
A cooling fan is required.
55
35
3
/min or more, 92 mm × 92 mm).
3
/min or more, 92 mm × 92 mm) if the ambient