1 Safety1.2.3.4. Brake testing3HAC026048-001 Revision: A24© Copyright 2006-2008 ABB. All rights reserved.1.2.3.4. Brake testingWhen to testDuring operation the holding brakes of each axis motor wear normally. A test may beperformed to determine whether the brake can still perform its function.How to testThe function of each axis' motor holding brakes may be checked as detailed below:1. Run each manipulator axis to a position where the combined weight of the manipulatorarm and any load is maximized (max. static load).2. Switch the motor to the MOTORS OFF position with the Operating mode selector on thecontroller.3. Check that the axis maintains its position.If the manipulator does not change position as the motors are switched off, then the brakefunction is adequate.
