Brake Release Tool Does Not Work - ABB CRB 15000 Product Manual

7 Troubleshooting

7.4 Brake release tool does not work

7.4 Brake release tool does not work
Description
The holding brake of a motor is not released using the brake release tool.
Consequences
The robot axis can not be manually moved.
Possible causes
The symptom can be caused by:
Recommended actions
The following actions are recommended:
1
2
3
4
614
• Damaged magnet on the brake release tool.
• Faulty power supply to the brake.
• Incorrect usage of the brake release tool:
- There has been an attempt to use the brake release mechanism while
the robot is in mode MOTORS ON
- There has been an attempt to use the brake release mechanism while
the manipulator is moving.
- There has been a very brief application of the magnet to the brake
release points (e.g. by accident).
• Faulty joint electronic hardware.
Action
Look for damage to the magnet.
Replace the tool if damaged.
Verify that the brake release tool is used
correctly.
Check the brake power supply to the motor
during the Motors OFF state.
Reset the brake release software as follows:
1 Turn off electrical power supply to the robot.
2 Turn on electrical power supply to the robot, without enabling the motors, and
perform following step within 30 minutes.
3 Wait for at least 5 seconds after power has been turned on, then put the brake
release tool against the brake release point on the joint and hold for 2-4 seconds.
Remove the brake release tool and wait for at least 2 seconds.
Software is reset. Any error code is removed from the FlexPendant.
4 Test the brake release function using the brake release tool against the brake
release point on the joint.
If the brake still does not release, repeat the reset cycle steps 3 and 4.
Five (5) attempts are allowed in total to reset the brake release. If desired, the
process can be repeated from step 1. If the brake still does not release, replace
the hardware.
© Copyright 2021 ABB. All rights reserved.
Information
Brake release tool: 3HAC077146-001
See Manually releasing the brakes on
page 50.
See the circuit diagram.
Check for any recorded fault status.
Product manual - CRB 15000
3HAC077389-001 Revision: A