Control system

A valve control system which receives control information generated from reference information received from system sensors of physical parameters, the control system comprising:

• a plurality of valves;
• a control device which receives the control information and generates valve control output information, indicating which valves should be operated;
• a plurality of physical switches, each of the switches represents one of the plurality of valves, a first group of selected switches are closed and a second group of nonselected switches are open,
• a logic array which receives the valve control output, the logic array compares the valve control output with the first group of selected switches or the second group of nonselected switches, the logic array generates valve operation output;
• wherein if the valve control output indicates that only valves associated with the first group of selected switches or only valves associated with the second group of nonselected switches are to be in an open position at the same time, the logic array will send the valve operation output to the valves.

A control system which receives control information generated from reference information received from system sensors of physical parameters, the control system controls a plurality of control devices, the control system comprising:

• a control unit which receives and processes the control information and generates control device output, indicating which control devices should be operated;
• a plurality of physical switches, each of the switches represents one of the plurality of control devices, a first group of selected switches are closed and a second group of nonselected switches are open,
• a logic array which receives the control device output, the logic array compares the control device output with the first group of selected switches or the second group of nonselected switches, the logic array generates control device operation output;
• wherein if the control device output indicates that at least one control device associated with the first group of selected switches and at least one control device associated with the second group of nonselected switches are to be engaged at the same time, the logic array will not send the control device operation output to the control devices and will send an error message to the control unit.