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PUS, category 3, up to PL e;
working valve (CH 1): 5/2-way bistable, electrically actuated, pilot actuated, limit switch drive
operation pressure (CH2): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by limit switch piston spool
pilot pressure (CH2): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
Safety Application Note with a possible implementation of the safety sub-function PUS for bistable valves. Included is a description, basic circuit, safety-related block diagram, Sistema project, FluidDraw project, FluidSim project, characteristics of suitable products and a product list of suitable products from Festo.

PUS, category 3, PL e;
working valve (CH1): 5/2 bistable, electrically actuated, pilot actuated, monitoring by limit switch drive
operation pressure (CH2): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
Safety Application Note with a possible implementation of the safety sub-function PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, FluidSim project, characteristics of suitable products and a product list of suitable products from Festo.

Safe Torque Off (STO), up to category 1, up to PL c;
PUS, up to category 2, up to PL d;
Channel 1 (working valve): 5/3-way valve, exhausted, electrically actuated, pilot actuated, mechanical spring, monitoring by limit switch drive.
Output test channel (operation pressure): 3/2-way valve, closed, electrically actuated, pilot actuated, mechanical spring.
Safety Application Note with a possible implementation of the safety sub-functions STO and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, FluidSim project, characteristics of suitable products and a product list of suitable products from Festo.

An artificial bird is introduced which was developed using two new

features in biologically-inspired flight, active torsion and partially linear

kinematics. Active torsion rests on well established theoretical

predictions in unsteady aerodynamics. The concept of partially linear

kinematics is inspired by zoological observations on flying locusts.

When the wings flap upwards, the servomotor for the active torsion

turns the outer wing from a positive angle of incidence within

a short fraction of the flapping period into a negative angle of incidence.

Between the turning points the angle of torsion remains

constant. Numerical calculations confirm the expected benefits

compared to passive torsion.

Cleaning is an absolute must if foodstuffs are to be produced hygienically. The highest priority here is afforded to avoiding the spread of germs and eliminating foreign particles. Proper cleaning reduces the downtime of your plant and systems, while protecting the consumer and your brand.

Application Note for the realization of the safety sub-functions safe stopping and closing (SSC) and prevention of an unexpected start-up (PUS) with category 1 and up to PL c. This Application Note contains possible circuits for 5/3, 3/2 and 2/2 directional control valves and delockable check valves.