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12. OPTIONS AND AUXILIARY EQUIPMENT
(d) MR-J2S-11KB-PX to MR-J2S-22KB-PX (when using the regenerative brake option)
The MR-J2S-11KB-PX to MR-J2S-22KB-PX servo amplifiers are not supplied with regenerative
brake resistors. When using any of these servo amplifiers, always use the MR-RB65, 66 or 67
regenerative brake option.
The MR-RB65, 66 and 67 are regenerative brake options that have encased the GRZG400-2
Ω
,
GRZG400-1
Ω
and GRZG400-0.8
Ω
, respectively. When using any of these regenerative brake
options, make the same parameter setting as when using the GRZG400-2
Ω
, GRZG400-1
Ω
or
GRZG400-0.8
Ω
(supplied regenerative brake resistors or regenerative brake option is used with
11kW or more servo amplifier).
Cooling the regenerative brake option with fans improves regenerative capability.
The G3 and G4 terminals are for the thermal protector. G3-G4 are opened when the regenerative
brake option overheats abnormally.
G3
G4
C
P
C
P
P
1
Servo amplifier
Do not remove
the short bar.
Configure up a circuit which
shuts off main circuit power
when thermal protector operates.
(Note)
Regenerative brake option
Note. Specifications of contact across G3-G4
Maximum voltage : 120V AC/DC
Maximum current : 0.5A/4.8VDC
Maximum capacity : 2.4VA
Regenerative Power [W]
Servo Amplifier
Regenerative
Brake Option
Model
Resistance
[
]
Without Fans With Fans
MR-J2S-11KB-PX MR-RB65 8 500 800
MR-J2S-15KB-PX MR-RB66 5 850 1300
MR-J2S-22KB-PX MR-RB67 4 850 1300
When using fans, install them using the mounting holes provided in the bottom of the
regenerative brake option. In this case, set "0E
" in parameter No. 2.
Mounting screw
4-M3(0.118)
(1.0m
3
/min 92)
MR-RB65 66 67
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Bottom
TE1
G4 G3 C P
TE
2 cooling fans