8 Servo Driver Settings
8.4.2 Using the Holding Brake
8-16
8
8.4.2 Using the Holding Brake
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.
* 1. The output terminal signal is allocated with Pn50F.2.
* 2. Brake power supplies are available in 200-V and 100-V models.
Servomotor
Prevents the movable part from
shifting due to gravity when
system power goes OFF.
Holding brake
M
BK
PG
Servomotor
with brake
A (1)
B(2)
C(3)
D(4)
E(5)
F(6)
U
V
W
CN2
Red
Black
Blue or
yellow
White AC
DC
BK-RY
BK-RY
+24V
L1
L2
L3
L1C
L2C
Brake Power Supply
Servo Driver
Power supply
CN1-
CN1-
(BKIR)
(BKIRCOM)
BK-RY: Brake control relay
1
*
2
*
1
*
Summary of Contents for OMNUC W R88A-NCW152-DRT
Page 1: ...Cat No I538 E3 1 DeviceNet Option Unit OMNUC W Series Model R88A NCW152 DRT...
Page 53: ...4 Connectors 4 5 3 DeviceNet Network Configuration Restrictions 4 22 4...
Page 97: ...5 Parameter Settings 5 3 8 Notch Signal Output Positioning 5 44 5...
Page 211: ...8 Servo Driver Settings 8 5 3 Absolute Encoder Multi turn Limit Setting 8 24 8...
Page 257: ...9 Troubleshooting 9 46 9...