1.3.6 Risks associated with live electric partsVoltage related risks, generalWork on the electrical equipment of the robot must be performed by a qualifiedelectrician in accordance with electrical regulations.Although troubleshooting may, on occasion, need to be carried out while the powersupply is turned on, the robot must be turned off (by setting the main switch toOFF) when repairing faults, disconnecting electric leads, and disconnecting orconnecting units.The main supply to the robot must be connected in such a way that it can be turnedoff from outside the working space of the robot.Make sure that no one else can turn on the power to the controller and robot whileyou are working with the system. A good method is to always lock the main switchon the controller cabinet with a safety lock.The necessary protection for the electrical equipment and robot during installation,commissioning, and maintenance is guaranteed if the valid regulations are followed.Voltage related risks, IRC5 controllerA danger of high voltage is associated with, for example, the following parts:• Be aware of stored electrical energy (DC link, Ultracapacitor bank unit) inthe controller.• Units such as I/O modules, can be supplied with power from an externalsource.• The main supply/main switch• The transformers• The power unit• The control power supply (230 VAC)• The rectifier unit (262/400-480 VAC and 400/700 VDC. Note: capacitors!)• The drive unit (400/700 VDC)• The drive system power supply (230 VAC)• The service outlets (115/230 VAC)• The customer power supply (230 VAC)• The power supply unit for additional tools, or special power supply units forthe machining process.• The external voltage connected to the controller remains live even when therobot is disconnected from the mains.• Additional connections.Voltage related risks, robotA danger of low voltage is associated with the robot in:• The power supply for the motors (up to 800 VDC).• The user connections for tools or other parts of the installation (max. 230VAC).Continues on next page32 Product manual - IRB 24003HAC022031-001 Revision: P© Copyright 2004-2018 ABB. All rights reserved.1 Safety1.3.6 Risks associated with live electric parts
