Pneumatic logic elements, MEMORY, Techno-polymer, DN 2.7 - Riegler 106709

Pneumatic logic elements, MEMORY, Techno-polymer, DN 2.7, Temperature range -10 °C to 60 °C, Working pressure 0 to 8 bar Pneumatic logic elements are available with five different functions: OR, AND, NOT, YES, MEMORY. All elements have an adapter for the Ω-rail (DIN EN 50022) integral with the body.

Technical data

Standards and origin

• Customs tariff number: 84818099
• Country of origin: AT

About Logic elements

Pneumatic logic elements combine pressure signals in the air itself, without a detour through electrical wiring and a controller. The group provides the OR, AND, NOT, YES, MEMORY and timer functions at flow rates from 100 to 1300 Nl/min. It suits simple sequence control wherever electrical signals are unwanted or not permitted.

What matters when choosing

• Function: OR, AND, NOT, YES, MEMORY or timer. It defines how the inputs are linked. On the timer the delay is infinitely adjustable via a selector and can be extended further by connecting an external reservoir.
• Flow rate: 100 to 1300 Nl/min. It has to match the downstream valve or cylinder, otherwise the logic element itself acts as a restrictor and switching times increase.
• Working pressure: depending on the version the lower limit is between 0 and 2.5 bar, the upper limit between 6 and 8 bar. The aluminium OR valves are rated at 2 to 10 bar operating pressure and are the most pressure resistant option here.
• Material: techno-polymer, or anodised aluminium combined with techno-polymer. The plastic version is lighter and more compact, the aluminium version takes more mechanical load. Sealing is NBR throughout.
• Length: 38.5 to 107 mm. This dimension governs the space required when several elements sit side by side on one rail.

Typical applications

• Two-hand controls and enabling logic on manually loaded fixtures
• End position signals combined by an OR function into a single output
• Delayed step-on in pneumatic sequences using the timer element
• Latching a short push-button signal where no electrical relay may be used
• Control tasks in wet or hazardous areas that must stay free of electrical components on site

The techno-polymer elements carry an adapter for the Ω rail to DIN EN 50022 integrated in the body, so they can be lined up inside a control box. The sealing material is NBR, and production takes place in Austria, Italy and Germany.