2.3.2 Manually releasing the brakesIntroduction to manually releasing the brakesThis section describes how to release the holding brakes for the motors of eachaxis.This can be done in three ways:• using the brake release unit (placed on the front of the IRC5 Compactcontroller) when the robot is connected to the controller. For other controllervariants, the placing depends on the design of the cell.• using the brake release unit when the robot is disconnected from thecontroller, but connected to an external power supply at the connector R1.MP.• using an external voltage supply directly on the motor connector.NoteOn the single controller there is no brake release button. The customer orintegrator is responsible to ensure that it in case of emergency is possible torelease the brakes to move the manipulator axes without using motion power.Continues on next page66 Product manual - IRB 1203HAC035728-001 Revision: N© Copyright 2009-2017 ABB. All rights reserved.2 Installation and commissioning2.3.2 Manually releasing the brakes
