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13. OPTIONS AN
D AUXILIARY EQUIPMENT
13.6 External 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 12.3.
The brake unit is rated for a short duration. Do not use it for high duty.
When the dynamic brake is used, the power supply voltage is restricted as
indicated below.
3-Phase 170 to 220VAC/50Hz
3-Phase 170 to 242VAC/60Hz
(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, and is built in the 7kW or less servo amplifier. Since it is not built
in the 11kW or more servo amplifier, purchase it separately if required. Assign the dynamic brake sequence
(DB) to any of the CN6-14 to CN6-16 pins in the parameters No.PD09 to PD11 or any of the C10-46 to
CN10-49 pins in the parameters No.Po08 or Po09.
Servo amplifier Dynamic brake
MR-J3-11KT DBU-11K
MR-J3-15KT DBU-15K
MR-J3-22KT DBU-22K
MR-J3-11KT4 DBU-11K-4
MR-J3-15KT4
DBU-22K-4
MR-J3-22KT4