Patent ID: 7946310

Claim:
A system comprising a plurality of discharge valves adapted to be used in a turbomachine, a pneumatic unit for activating said plurality of discharge valves, and an information return device, wherein said pneumatic unit comprises: activation outlets corresponding to the number of discharge valves forming said plurality of discharge valves, and a single control input receiving a single control signal from an electronic control unit, the control signal being designed to act on a control winding of a manifold means having outlets that form said activation outlets; and wherein said information return device comprises information return inlets connected to respective corresponding ones of the plurality of discharge valves, the information return device transforming information returned from the plurality of discharge valves into a single information signal enabling the electronic control unit to determine the activation or deactivation state of each of the discharge valves, wherein each of the information return inlets includes a return piston switching between a first resistor and a second resistor depending on the activation or deactivation state of the discharge valve that is connected thereto, the first resistor having an identical resistance for all of the information return inlets, and the second resistor having a resistance that is different for each of the information return inlets, wherein switching of the return piston at each of the information return inlets enables one of the first and second resistors of each of the information return inlets to be connected to the others to form an electrical circuit presenting an overall resistance indicative of which discharge valves are genuinely activated.