System for controlling safety protections for industrial machines or plants

A system for controlling safety protections for industrial machines or plants, wherein a protection comprises one or more accesses (A1, A2) to a safety perimeter (P) or safety area of a machine or industrial plant (M), the system comprising:

• first enabling means comprising at least one first control device (2) placed in correspondence with at least one of said one or more accesses (A1, A2), outside the safety perimeter (P), to send stop and/or start and/or enabling commands of the machine or plant (M) following the opening/closing of one of the one or more accesses (A1, A2);
• verification means for evaluating an opened/closed condition and possible locking of one or more of said one or more accesses (A1, A2);
• second enabling means comprising at least one second control device (4) different and separated from said at least one first control device (2) and placed in correspondence with at least one of said one or more accesses (A1, A2), inside the safety perimeter (P), for sending commands to the machine or industrial plant (M);
• one or more actuators (9) each having a recognition system of a respective operator by means of an identification code and adapted to interact with said at least one first control device (2) and said at least one second control device (4), for sending respective actuation commands;
• at least one control unit (15) operatively connected to said at least one first control device (2) and said at least one second control device (4), wherein said at least one first control device (2) and said at least one second control device (4) are suitable to generate respective actuation commands to be sent to said at least one control unit (15),
• wherein said at least one control unit (15) is configured to receive said actuation commands and enable the opening and/or locking/unlocking of a selected access of said one or more accesses (A1, A2) and switch the operation of the machine or industrial plant (M) inside the safety perimeter (P), or at least part of the machine or industrial plant (M), between a first full operative condition and a second operating condition as a function of the type of actuation commands received,
• wherein said at least one control unit (15) is configured to enable the machine or industrial plant (M) to switch from said second operating condition to said first full operative condition only following reception of codes or data certifying the exit of all operators from the safety perimeter (P).