ABB IRB 120 Product Manual page 59

Using the brake release unit with an external power supply
Use this procedure to release the holding brakes, when the robot is not connected to the
controller.
3HAC035728-001 Revision: B
Action
1.
NOTE!
Be careful not to interchange the 24V and
0V pins.
If they are mixed up, damage can be
caused to the brake release unit and to the
system board.
2. Connect an external 24VDC power supply
to connector R1.MP on the robot base.
3.
CAUTION!
The holding brakes are released to all axes
when power is connected to the pins.
2 Installation and commissioning
2.3.2. Manually releasing the brakes
Note
xx0900000638
Connect to connector R1.MP:
• A: 0V to pin 12
• B: 24V to pin 13
Continued
57