Experiment: Contacts in series - AND function

The following animation shows a schematic for a clamping cylinder (M1) that extends in order to clamp a piece of raw material to be worked on. The machinery is protected by a safety grille. The cylinder may not extend until the unit is switched via switch S1, the protective grille is lowered (detected by switch S2) and the piece to be worked on is in place (detected by switch S3).

Construct the pneumatic and electrical circuits as shown below: