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5.7 How to release the brake in an emergency
The following describes how to release the brake using the emergency power supply in an emergency.
Using an emergency power supply system separated from the primary power supply of the robot prevents the
robot from moving accidentally during the brake release operation, which contributes to enhancing customer
safety.
An emergency here means an emergency stop of robot operation, which requires the brake release operation to
set the robot in an evacuation posture temporarily.
[Note] Do not connect an emergency power supply to multiple robots and release their brakes at the same time.
1) Connect the teaching pendant to the robot controller.
2) Connect the 24V DC power supply to EXT1 of the controller as shown in the figure below.
To prevent accidental power supply from the primary power supply of the robot, prepare an emergency
power supply system separated from the primary power supply of the robot to supply AC power to the 24V
DC power supply.
[Note] For using the CR800-R controller, it is necessary to turn on the primary power supply of the robot
CPU system (PLC). But, do not turn on the primary power supply of the CR800-R controller.
The following shows the connector specifications.
EXT1 connector
Connector: J21DF-16V-KX
Contact: SJ2F-01GF-P1.0
Manufacture: JST
Pin assignment
Pin number
8A
8B
3B
7A
7B
3A
3) When the 24V DC power supply is turned on, the controller starts and then errors (H0712, H0090, H0212)
will occur.
CN51 connector (recommended)
Connector: VHR-8N
Contact: SVH-41T-P1.1
Manufacture: JST
Pin assignment
Pin number
Signal name
24V
GND
Signal name
1
2
GND
3
4
5
6
24V
7
8
5 Maintenance and Inspection
CN1 connector (recommended)
Connector: VHR-5N
Contact: SVH-41T-P1.1
Manufacture: JST
Pin assignment
Pin number
Signal name
1
L
3
N
5
FG
Resetting the origin
5-107
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