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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:
•
The RobotWare version is 7.10 or higher. Then the brakes are released using
the FlexPendant, see
Manually releasing the brakes on page 69
•
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.
Recommended actions
The following actions are recommended:
Information
Action
Brake release tool: 3HAC079146-001
Note
The spare parts related to the brake re-
lease function using the external tool are
discontinued from Q2 2023.
Look for damage to the magnet.
Replace the tool if damaged.
1
See
Manually releasing the brakes with
Verify that the brake release tool is used
correctly.
2
See the circuit diagram.
Check the brake power supply to the motor
during the Motors OFF state.
3
Check for any recorded fault status.
Continues on next page
Product manual - CRB 15000
1063
3HAC077389-001 Revision: L
© Copyright 2021 - 2023 ABB. All rights reserved.
7 Troubleshooting
7.4 Brake release tool does not work
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