Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 528

[Appendix 1] Summary of MR-J4_B_-RJ020 + MR-J4-T20
(4) MR-J4-11KB-RZ020 to MR-J4-22KB-RZ020 and MR-J4-11KB4-RZ020 to MR-J4-22KB4-RZ020 (when
regenerative options are used.)
MR-J4-11KB-RZ020 to MR-J4-22KB-RZ020 and MR-J4-11KB4-RZ020 to MR-J4-22KB4-RZ020 do not
come with regenerative resistors. When you use these servo amplifiers, be sure to use MR-RB5E, MR-
RB5R, MR-RB9P, MR-RB9F, MR-RB9T, MR-RB5K-4, MR-RB6B-4, MR-RB60-4 or MR-RB6K-4.
Cooling with a cooling fan enhances regenerative power. The G3 and the G4 terminals are thermal
sensors. Abnormal overheating of the regenerative option causes the contact between G3 and G4 to
open.
When you use a cooling fan, install it in the mounting hole at the bottom of the regenerative option.
Cooling fan × 2
(1.0m 3 /min or more, 92 mm square)
Servo
5 m or less
amplifier
P+
C
When the thermal sensor is activated,
configure to shut off the main circuit power.
Note. Specifications for contacts between G3 and G4
Maximum voltage: 120 V AC/DC
Maximum current: 0.5 A/4.8 V DC
Maximum capacity: 2.4 VA
Regenerative
Servo amplifier
options
MR-RB5E
MR-J4-11KB-RZ020
MR-RB5R
MR-RB9P
MR-J4-15KB-RZ020
MR-RB9F
MR-J4-22KB-RZ020
MR-RB9T
MR-RB5K-4
MR-J4-11KB4-RZ020
MR-RB6B-4
MR-RB60-4
MR-J4-15KB4-RZ020
MR-RB6K-4
MR-J4-22KB4-RZ020
Bottom
TE1
Mounting screw 4-M3
Appendix 1-65
Regenerative
option
P
C
G3
(Note)
G4
Regenerative power [W]
Resistance
value
Without
[Ω]
cooling fan
6
500
3.2
4.5
850
3
2.5 850
10
500
20
12.5
850
10
MR-RB5E・MR-RB5R・MR-RB9P・
MR-RB9F・MR-RB9T・MR-RB5K-4・
Top
MR-RB6B-4・MR-RB60-4・MR-RB6K-4
TE
G4 G3 C
With
cooling fan
800
1300
1300
800
1300
P