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Application Note for the realization of the safety sub-functions safe blocking (SB) and prevention of an unexpected start-up (PUS) with category 1 and up to PL c. This Application Note contains possible circuits together with the safety sub-functions safe torque off (STO) and safe equilibrium of torque (SET).

Application Note for the realization of the safety sub-functions safe equilibrium of torque (SET) and prevention of an unexpected start-up (PUS) with category 1 and up to PL c. This Application Note contains a possible circuit for 5/3 directional control valves and pressure regulators.

In safety-related pneumatic circuits, certain features of directional control valves should be taken into account. These can result in restrictions, but sometimes also enable interesting solutions.

Safe Torque Off (STO), up to category 1, up to PL c;
Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Working valve (CH1): 5/3-way, exhausted, electrically actuated, pilot actuated, mechanical spring;
Safety Application Note with a possible implementation of the safety sub-functions STO and PUS. 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.

Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Channel 1 (working valve): 5/2-way, bistable, electrically actuated, pilot actuated;
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.

SB-f, up to category 1, up to PL c;
PUS, up to category 1, up to PL c;
Channel 1: Clamping unit, clamping via spring force, air to release
Safety Application Note with a possible implementation of the safety sub-functions SB-f and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, characteristics of suitable products and a product list of suitable products from Festo.

Safe Stopping and Closing (SSC), up to category 1, up to PL c;
Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Channel 1 (working valve): 5/3-way, closed, electrically actuated, pilot actuated, mechanical spring;
Safety Application Note with a possible implementation of the safety sub-functions SSC and PUS. 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.

Safe Stopping and Closing (SSC), up to category 1, up to PL c;
Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Channel 1: piloted check valve; 2 x 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring;
Safety Application Note with a possible implementation of the safety sub-functions SSC 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.

Safe Stopping and Closing (SSC), up to category 1, up to PL c;
Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Channel 1: 2/2-way, closed; 2 x 3/2-way, exhausting, electrically actuated, pilot actuated, mechanical spring;
Safety Application Note with a possible implementation of the safety sub-functions SSC 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.

Safe Stopping (SSC), up to Cat. 3, up to PL d;
Prevention of unexpected start-up (PUS), up to Cat. 3, up to PL d;
Channel 1: piloted check valve, limit switch drive, test cycle
Channel 2: 5/3 way closed, limit switch drive, test cycle
Safety Application Note with a possible implementation of the safety sub-functions SSC and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, characteristics of suitable products and a product list of suitable products from Festo.

Safe Stopping (SSC), up to Cat. 3, up to PL d;
Prevention of unexpected start-up (PUS), up to Cat. 3, up to PL d;
Channel 1: 2/2 way closed, pneumatic actuated, mechanical spring, limit switch drive, test cycle
Channel 2: 5/3 way closed, limit switch drive, test cycle
Safety Application Note with a possible implementation of the safety sub-functions SSC and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, characteristics of suitable products and a product list of suitable products from Festo.

Safe Direction (SDI), up to category 1, up to PL c;

Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Working valve (CH1): 5/2-way, monostable, electrically actuated, pilot actuated, mechanical spring;
Safety Application Note with a possible implementation of the safety sub-functions SDI and PUS. 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.

Safe De-Energization (SDE), up to category 3, up to PL e;
Prevention of unexpected start-up (PUS), up to category 3, up to PL e;
Channel 1 (working valve): 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring, negative overlap, monitoring by pressure switch;
Channel 2 (working valve): 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch;
Safety Application Note with a possible implementation of the safety sub-functions SDE and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, characteristics of suitable products and a product list of suitable products from Festo.

Safe De-Energization (SDE), up to category 1, up to PL c;
Prevention of unexpected start-up (PUS), up to category 3, up to PL e;
Channel 1 (working valve): 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring, positive overlap, monitoring by pressure switch;
Channel 2 (working valve): 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring, monitoring by limit switch piston spool;
Safety Application Note with a possible implementation of the safety sub-functions SDE and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, characteristics of suitable products and a product list of suitable products from Festo.

Safe De-Energization (SDE), up to category 3, up to PL e;
Prevention of unexpected start-up (PUS), up to category 3, up to PL e;
Channel 1 (working valve): 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring, negative overlap, monitoring by pressure switch;
Channel 2 (working valve): 3/2-way, closed, electrically actuated, pilot actuated, mechanical spring, monitoring by limit switch piston spool;
Safety Application Note with a possible implementation of the safety sub-functions SDE and PUS. Included is the basic circuit, safety-related block diagram, Sistema project, FluidDraw project, characteristics of suitable products and a product list of suitable products from Festo.

SDE, up to category 4, up to PL e;
PUS, up to category 4, up to PL e;
Channel 1 (working valve): 5/2 monostable, electrically actuated, pilot actuated, mechanical spring, limit switch piston spool
Channel 2 (working valve): 5/2 monostable, electrically actuated, pilot actuated, mechanical spring, limit switch piston spool
Safety Application Note with a possible implementation of the safety sub-functions SDE 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.

Safe Torque Off (STO), up to category 1, up to PL c;
Prevention of unexpected start-up (PUS), up to category 1, up to PL c;
Channel 1 (working valve): 2 x 3/2-way, exhausted, 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, characteristics of suitable products and a product list of suitable products from Festo.

This document provides recommendations on how the load voltage of the valve terminal MPA-FB-VI, MPAL, VTSA-F-CB und VTUG can be safely switched off. It is planned to expand this document with information on other valve terminals.

Safe Torque Off (STO), up to category 1, up to PL c;
Prevention of unexpected startup (PUS), up to category 2, up to PL d;
Channel 1 (working valve): 2 x 3/2, closed, monostable, electrically actuated, pilot actuated, mechanical spring, monitoring by limit switch drive.
Channel 2 (operation pressure): 3/2 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.

STO, up to category 2, up to PL d;
PUS, up to category 2, up to PL d;
Channel 1 (working valve): 2 x 3/2 exhausted, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch.
Channel 2 (operation pressure): 3/2 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, characteristics of suitable products and a product list of suitable products from Festo.

STO, up to category 1, up to PL c;
PUS, up to category 3, up to PL e;
Working valve (CH1): 2 x 3/2, closed, monostable, electrically actuated, pilot actuated, mechanical spring, positive overlap, limit switch drive
Operation pressure (CH2):3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring pressure
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, characteristics of suitable products and a product list of suitable products from Festo.

STO, up to category 1, up to PL c;
PUS, up to category 3, up to PL e;
Channel 1 (working valve): 2 x 3/2 exhausted, electrically actuated, overlap, pilot actuated, mechanical spring, limit switch drive
Channel 2 (operation pressure ): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by limit switch piston spool
Channel 2 (pilot pressure ): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
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, characteristics of suitable products and a product list of suitable products from Festo.

STO, up to category 1, up to PL c;
PUS, up to category 3, up to PL e;
Channel 1 (working valve): 5/3 exhausted, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
Channel 2 (operation pressure): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
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, characteristics of suitable products and a product list of suitable products from Festo.

STO, up to category 1, up to PL c;
PUS, up to category 3, up to PL e;
Channel 1 (working valve): 5/3 exhausted, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
Channel 2 (operation pressure ): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
Channel 2 (pilot pressure ): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
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, characteristics of suitable products and a product list of suitable products from Festo.

STO, up to category 1, up to PL c;
PUS, up to category 3, up to PL e;
Channel 1 (working valve): 2x3/2 exhausted, electrically actuated, pilot actuated, overlap, mechanical spring, monitoring by pressure switch
Channel 2 (operation pressure): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
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, characteristics of suitable products and a product list of suitable products from Festo.

STO, up to category 1, up to PL c;
PUS, up to category 3, up to PL e;
Channel 1 (working valve): 2 x 3/2 exhausted, electrically actuated, overlap, pilot actuated, mechanical spring, limit switch drive
Channel 2 (operation pressure ): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
Channel 2 (pilot pressure ): 3/2 closed, electrically actuated, pilot actuated, mechanical spring, monitoring by pressure switch
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, characteristics of suitable products and a product list of suitable products from Festo.

Safety Application Note with the definitions of the safety sub-functions "Safe Torque Off (STO)" and the related safety sub-function "Prevention of Unexpected Start (PUS)" for pneumatic circuits and their safe condition. For practical implementation, additional notes are given which should be observed depending on the application.

Safety Application Note with the definitions of the safety sub-functions "Safe De-energization (SDE)" and the related safety sub-function "Prevention of Unexpected Start (PUS)" for pneumatic circuits and their safe condition. For practical implementation, additional notes are given which should be observed depending on the application.

Safety Application Note with the definition of the safety sub-function "Prevention of Unexpected Start (PUS)" for pneumatic circuits and their safe condition. For practical implementation, additional notes are given which should be observed depending on the application.

Safety Application Note with the definitions of the safety sub-functions "Safe Blocking with Friction Locking (SB-f)" and the related safety sub-function "Prevention of Unexpected Start (PUS)" for pneumatic circuits and their safe condition. For practical implementation, additional notes are given which should be observed depending on the application.