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:
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• 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 in
automatic operating mode.
- There has been an attempt to use the brake release mechanism during
the startup phase of the controller, that is, before the controller is fully
operational.
- 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, for example, 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.
© Copyright 20212022 ABB. All rights reserved.
Information
Brake release tool: 3HAC079146-001
See Manually releasing the brakes on
page 52.
See the circuit diagram.
Check for any recorded fault status.
Product manual - CRB 15000
3HAC077389-001 Revision: E