System for controlling a switch, switching arm and electrical installation

A control system for a switch of a voltage converter configured to be connected to a rotating electrical machine, the control system comprising:

• a microcontroller configured to receive an initial mode request and implementing:
• a command-generating device configured to supply commands and to transfer the initial mode request to an output pin of the microcontroller, and
• an accidental starting detection device;
• a driver configured to:
• receive the commands supplied by the microcontroller and a disable command, the disable command being either a partial disable command, a total disable command, or a software disable command,
• evaluate both the commands supplied from the microcontroller and the disable command, and, based upon the evaluation, generate an output command signal,
• supply the output command signal to the switch, the driver being connected to the output pin to receive the transferred mode request,
• wherein the output command signal selectively causes the rotating electrical machine to operate in an active mode or disables the rotating electrical machine, said active mode being one of a motor mode, an alternator mode, or a degraded alternator mode,
• while the driver is receiving the disable command, supply the output command signal to the switch independently of the commands received from the microcontroller such that the rotating electrical machine operates in the degraded alternator mode or is disabled,
• wherein the output pin is connected to an input pin of the microcontroller to receive the transferred mode request, and
• wherein the accidental starting detection device detects when the transferred mode request received on the input pin indicates the motor mode even though the initial mode request received by the microcontroller indicates the alternator mode, and, in this case, to send the disable command to the driver,
• wherein the disable command sent by the accidental starting detection device is the partial disable command, and
• wherein the driver is configured to receive the partial disable command, based upon which the driver operates in the degraded alternator mode.