MELSERVO-J4

Options/Peripheral Equipment

Dynamic Brake

GF-RJ GF

B

B-RJ

A

A-RJ

Servo Amplifiers Rotary Servo Motors Linear Servo Motors Direct Drive Motors Options/Peripheral Equipment Product List LVS/Wires Cautions

Connections

For MR-J4-DU900B(4), MR-J4-DU11KB(4), MR-J4-DU15KB(4), MR-J4-DU22KB(4)

For MR-J4-11KGF(4)/B(4)/A(4), MR-J4-15KGF(4)/B(4)/A(4), MR-J4-22KGF(4)/B(4)/A(4)

Drive unit malfunction RA1

Emergency stop switch

Ready on/off

MC

Malfunction RA1

Off

On

SK

MC

Power regeneration converter unit

(Note 4) Step-down transformer MCCB

SK

Drive unit L+ L

MC

Emergency stop switch

AC reactor

L+ L

L+ L-

MC

(Note 4) Step-down transformer

L1 L2 L3

Bus bar

U V W Servo motor M

U V W Servo motor M

Servo amplifier

MCCB

MC

V U W

U V W

L3 L2 L1

MC1 MC2

(Note 1)

L21 L11

(Note 1)

L11 L21

RA1

RA2

ALM

RA1 RA2

ALM

DB

(Note 2)

(Note 2)

DICOM DB DOCOM DICOM

24 V DC

DICOM

24 V DC

DOCOM

(Note 1)

SD (Note 6) EM2

L11 L21

(Note 6)

EM2

Main circuit power supply

(Note 6)

(Note 6) Main circuit power supply

SD

(Note 3)

13 U

V W

(Note 3)

14

(Note 5)

(Note 1)

b a

Dynamic brake (DBU)

Dynamic brake (DBU) 13 U

V W

14

RA2

(Note 1)

(Note 5)

b a

Dynamic brake interlock

Dynamic brake interlock RA2

For MR-J4-DU30KB(4)/A(4) or larger

Resistance regeneration converter unit malfunction RA2

Drive unit malfunction RA1

Emergency stop switch

Ready on/off

SK M C

Resistance regeneration converter unit

(Note 4) Step-down transformer

Drive unit

L+ L

L+ L-

Bus bar

U V W Servo motor M

MC1 MC2

V U W

MCCB

MC

L1 L2 L3

(Note 1)

A1 R A3 R

L11 L21

ALM

24 V DC

(Note 2)

DICOM DB DOCOM DICOM

ALM DICOM DOCOM DICOM

24 V DC

A2 R

EM2

EM1

(Note 6)

(Note 6) Main circuit power supply

DOCOM

SD

(Note 1)

L11 L21

(Note 3)

Dynamic brake (DBU) 13 U

V W

14

(Note 1)

a

Dynamic brake interlock RA3

b

Notes: 1. Install an overcurrent protection device (molded-case circuit breaker, fuse, etc.) to protect the branch circuit. 2. Validate DB (Dynamic brake interlock) with [Pr. PD07] to [Pr. PD09] for MR-J4-B/MR-J4-B4/MR-J4-DU_B/MR-J4-DU_B4. 3. The terminals 13 and 14 are normally opened outputs. If the dynamic brake is welded, the terminals 13 and 14 will be opened. Thus, create an external sequence circuit that SON (Servo-on) does not turn on when the terminals 13 and 14 are opened. 4. A step-down transformer is required if the servo amplifier, power regeneration converter unit, or resistance regeneration converter unit is in 400 V class, and coil voltage of the magnetic contactor is in 200 V class. 5. When using DBU-7K-4-2R0, DBU-11K-4 or DBU-22K-4, the power supply voltage must be between 1-phase 380 V AC and 463 V AC, 50 Hz/60 Hz. Refer to relevant Servo Amplifier Instruction Manual for details. 6. To prevent an unexpected restart of the servo amplifier, create a circuit to turn off EM2 (Forced stop 2) when the main circuit power is turned off.

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