Using The Holding Brake - Omron OMNUC W Series Manual

8 Servo Driver Settings

8.4.2 Using the Holding Brake

8.4.2 Using the Holding Brake
8
The holding brake is used when a Servo Driver controls a vertical axis. In other words, a
Servomotor with brake prevents the movable part from shifting due to gravity when system
power goes OFF.
Note The brake built into the Servomotor with brakes is a non-excitation brake, which is used only to
hold and cannot be used for braking. Use the holding brake only to hold a stopped motor. Brake
torque is at least 120% of the rated Servomotor torque.
Wiring Example
Use the Servo Driver sequence output signal BKIR and the brake power supply to form a
brake ON/OFF circuit. The following diagram shows a standard wiring example.
Power supply
BK-RY
+24V
BK-RY
Brake Power Supply
BK-RY: Brake control relay
* 1. The output terminal signal is allocated with Pn50F.2.
* 2. Brake power supplies are available in 200-V and 100-V models.
Servomotor
Holding brake
Prevents the movable part from
shifting due to gravity when
system power goes OFF.
Servo Driver
L1
U
L2
V
L3
W
L1C
L2C
* 1
CN1-
(BKIR)
1
*
CN1-
(BKIRCOM)
CN2
Blue or
yellow
Red
White AC DC
Black
* 2
8-16
Servomotor
with brake
A (1)
B(2)
M
C(3)
D (4)
E (5)
BK
F(6)
PG