An apparatus for generating a three-phase pulse-width-modulation signal for a three-phase voltage inverter employing a semiconductor switching element includes a generating unit that generates the three-phase pulse-width-modulation signal based on at least one combination of three basic voltage vectors and at least a zero vector. A memory identifiers storage stores memory identifiers associated with protected components. The information is converted into digital signals and is sent via a communication system to a recipient which returns feedback on the received information. The linking member is rotatably movable in response to a rotational motion of the swivel member.