Supplied as an example of work by Germaine Systems, this is the circuit diagram (schematic) of the electrical control system small machine recently built for a food preparation equipment manufacturer.
This is a small machine, During the CE marking procedure, The machine was deemed to require an enhanced safety control. The control system uses a Pilz PNOZ X1 and two contactors to ensure that a single component failure cannot inhibit the emergency stop from working.
The design is simple and low-cost, while still ensuring operator safety and standards compliance.
References to the original customer have been removed.