YASKAWA Σ-V Series User Manual page 103

4 Operation
4.2.7 Holding Brakes
(1) Wiring Example
Use the SERVOPACK contact output signal /BK and the brake power supply to form a brake ON/OFF circuit.
The following diagram shows a standard wiring example.
The timing can be easily set using the brake signal (/BK).
Power supply
(2) Signal Setting
This output signal controls the brake.
The /BK signal turns OFF when an alarm is detected or the servomotor power is OFF. The brake OFF timing
can be adjusted with Pn506.
The allocation of the /BK signal can be changed. Refer to (3) Brake Signals (/BK) Allocation for details.
Type
Output
4-16
SERVOPACK
L1
L2
L3
L1C
L2C
AC side
Brake power
supply
AC DC
• Configure the relay circuit to apply the holding brake by the emergency stop.
SERVOPACK
Photocoupler
Connector
Name
Pin Number
/BK CN1-1, CN1-2
The /BK signal remains ON during overtravel. The brake is released.
U
V
W
CN2
+24 V
CN1
BK-RY
(/BK+)
1
1D
0 V
(/BK-)
2
DC side
BK-RY
Relay Circuit Example
5 to 24 VDC
Emergency stop
0 V
Setting
ON (close)
OFF (open)
Linear servomotor
M
ENC
BK
Meaning
Releases the brake.
Applies the brake.