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2 Wiring and Connection
MITSUBISHI CNC
2.7.2 Dynamic Brake Unit Wiring
The servo drive units of MDS-D2-V1-320W or larger and MDS-DH2-V1-160W or larger do not have built-in dynamic
brakes. Always install a dynamic brake unit.
The servo drive units of MDS-D2-V1-320 or smaller or MDS-DH2-V1-160 or smaller have built-in dynamic brakes.
CAUTION
Correct wire the dynamic brake unit to the servo drive unit.
Do not use for applications other than emergencies (normal braking, etc.). The internal resistor could heat up, and lead to
fires or faults.
POINT
When you use a servo motor with a brake, please wire (between 1pin and 3pin) of CN20 connector.
V
W
U
14
13
b
a
C
SK
R(0.5
)
V
W
2
1
3
U
UVW a b
2
3
NC
a
b
13
14
5
6
2
1
3
4
DC24V
GND
CNU20S(AWG14)
(CN20)
2
3
M
(MDS-D-DBU)
DBR
P24
MBR
1
1
Brake connector
External
power supply
Twist wire
Control terminal
block (M3)
Dynamic brake unit
Power terminal
block (M3)
Internal circuit diagram
Servomotor
Pin Name
Terminal
Name
Terminal
Name
Terminal block
To a motor
brake