YASKAWA E-V-MD Series User Manual page 114

(1) Wiring Example
Use the brake signal (/BK) and the brake power supply to form a brake ON/OFF circuit. The following dia-
gram shows a standard wiring example.
The timing can be easily set using the brake signal (/BK).
Isolated
AC/DC converter
for main power supply
Power supply
Isolated
AC/DC converter
for control
power supply
*1. BK-RY: Brake control relay
Brake power supply for 24 VDC is not included.
*2. The box ( ) is replaced by a number. For a type A01 SERVOPACK, the number is 4.
For a type A02 SERVOPACK, the number is 8.
SERVOPACK
CN32 CN11 to CN1
L1
L2
CN31
L1C
L2C
CN1
1,3,14,17,19,
21,23,25
2,4,15,18,20,
22,24,26
Brake power
supply
BK-RY
• Always connect a surge absorber.
• After the surge absorber is connected, check the total time the brake is applied for the
system. Depending on the surge absorber, the total time the brake is applied can be
changed.
• Configure the relay circuit to apply the holding brake by the emergency stop.
Relay Circuit Example
SERVOPACK
Photocoupler
• Always separate the brake power supply from other power supplies, such as the con-
trol or I/O signal (CN1) power supplies. If the power supply is shared, the I/O signals
might malfunction.
*2
U
V
W
+24 V
BK-RY
+
/BK
1D
- 0 V
/BK
*1
5 to 24 VDC
Emergency stop
0 V
7.3 Basic Functions Settings
Servomotor
with holding
brake
M
ENC
BK
Surge
absorber
7-11
7