External Dynamic Brake - Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual

13. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)

13.9.3 External dynamic brake

(1) Selection of dynamic brake
The dynamic brake is designed to bring the servo motor to a sudden stop when a power failure occurs or
the protective circuit is activated. When using the external dynamic brake, assign the dynamic brake
interlock (DB) to any of CN3-9, CN3-13, and CN3-15 pins in parameter No.PD07 to PD09.
(2) Connection example
Use the following wires to connect the dynamic brake.
POINT
Configure up a sequence which switches off the contact of the brake unit after
(or as soon as) it has turned off the servo on (signal) at a power failure or
failure.
For the braking time taken when the dynamic brake is operated, refer to
section 13.8.3.
The brake unit is rated for a short duration. Do not use it for high duty.
The specifications of the input power supply for external dynamic brake are
the same as those of the converter unit control circuit power supply.
Operation timing is the same as that for servo amplifiers with 22kW or less.
Refer to section 11.6.
Converter unit
MR-J3-CR55K
MR-J3-CR55K4
Dynamic
brake
DBU-37K
DBU-55K-4
Drive unit
MR-J3-DU30KB
MR-J3-DU37KB
MR-J3-DU30KB4
MR-J3-DU37KB4
MR-J3-DU45KB4
MR-J3-DU55KB4
2
Wire[mm ]
a b U V W
2
13 - 77
Dynamic brake
DBU-37K
DBU-55K-4
14