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Options and auxiliary equipment – MITSUBISHI ELECTRIC MELSERVO MR-J2S- A User Manual

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13. OPTIONS AND AUXILIARY EQUIPMENT

(d) MR-J2S-11KA-PX to MR-J2S-22KA-PX (when using the regenerative brake option)

The MR-J2S-11KA-PX to MR-J2S-22KA-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

,

GRZG400-1

and GRZG400-0.8

, respectively. When using any of these regenerative brake

options, make the same parameter setting as when using the GRZG400-2

, GRZG400-1

or

GRZG400-0.8

(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 sensor. G3-G4 are opened when the regenerative
brake option overheats abnormally.

RA

ALM

G3

G4

C

P

COM

C

P

P

1

Servo amplifier

Do not remove
the short bar.

Configure up a circuit which
shuts off main circuit power
when thermal sensor 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-11KA-PX

MR-RB65

8

500

800

MR-J2S-15KA-PX

MR-RB66

5

850

1300

MR-J2S-22KA-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. 0.

Mounting screw
4-M3(0.118)

(1.0m

3

/min 92)

MR-RB65 66 67

Top

Bottom

TE1

G4 G3 C

P

TE

2 cooling fans