Safety instructions 13Safety in installationThese instructions are for all who install or connect an optionalmodule to a drive, converter or inverter and need to open its frontcover or door to do the work.WARNING! Obey these instructions. If you ignore them,injury or death, or damage to the equipment can occur.• If you are not a qualified electrician, do not do installation ormaintenance work.• Disconnect the drive, converter or inverter from all possiblepower sources. After you have disconnected the drive,converter or inverter, always wait for 5 minutes to let theintermediate circuit capacitors discharge before you continue.• Disconnect all dangerous voltages connected to other controlsignal connectors in reach. For example, it is possible that 230V AC is connected from outside to a relay output of the drive,converter or inverter.• Always use a multimeter to make sure that there are no partsunder voltage in reach. The impedance of the multimeter mustbe at least 1 Mohm.