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13. OPTIONS AND AUXILIARY EQUIPMENT
13.1.4 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, 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. Set "
1
" in the parameter
No. 1.
Servo amplifier Dynamic brake
MR-J2S-11KA DBU-11K
MR-J2S-15KA DBU-15K
MR-J2S-22KA DBU-22K
(2) Connection example
13 U14 V W
NFB
MC
L
11
L
21
U
V
W
U
V
W
E
M
a
b
RA1
RA1
EMG
CN1B
5
SON
CN1B
L
3
L
2
L
1
RA1
15
EMG
10 SG
SDPlate
18
DB
13
COM
3
VDD
MC
SK
MC
ON
OFF
(Note1)
EMG
Servo amplifier
Servo motor
Dynamic brake
Power supply
3-phase
200 to
230VAC
Operation-ready
Note1. Configure up the circuit so that power is switched off in the external sequence at servo alarm occurrence.
P
P
1
(Note2)
2. When using servo ampliflers of 11kw to 22kw, always connect P-P1.(Factory-wired.) When using the power factor
improving DC reactor, refer to Section 13.2.4