Minute lecture pulse_switches

Pulse switches for houses and apartments

Greater flexibility and more possibilities

Guy KasierE&D SystemsJanuary 2011

LeonardoENERGY www.leonardo-energy.org

What are pulse switches?

• Bistable relay• DIN-rail mounting• Operated by pushbutton• Often low safety driving current voltage• Used in controlling lights

Source: EltakoLeonardoENERGY

Conventional installation

Pulse switches

• We want an extra switch for light point 1, next to switch 2.

• To do this, we need to:– Add two wires between switches 1 and 2– Replace switch 2 with a double single-pole one

• Problems:– If cable is used between 1 and 2: it is not possible– If tube with wire: sometimes possible (depending

on type of tube and number of wires already present)

Pulse switches

• We want an extra pushbutton for light point 1, next to pushbutton 2.

• To do this, we need to:– Replace pushbutton 2 with a double pushbutton– Connect pushbutton 3 using the same wire as for

pushbutton 1

• Problems:– None

Pulse switches

Additional pulse switches options (1)

• Central on/central off• Group control on/off

Source: EltakoLeonardoENERGY www.leonardo-energy.org

Additional pulse switches options (2)

• Combined with timed relay– Short push: timed relay on– Push > 1 sec.: switch on– Push > 2 sec.: switch off– Possibility of warning before lamp goes out

• 30 sec. before time runs out• Example:

– ES position: pulse switch– ER position: monostable relay– ESV position: timed relay

Source: Eltako

Advantages• Increased flexibility of installation

– Easy to adapt and extend• More options

– Local control– Group controls– Central controls– Timed controls

• Driving circuit usually low safety voltage– e.g. with 24V AC transformer

• Less grinding and cutting work in the walls• Ceilings need not be perforated• Installation can be converted to an integrated home system with

star topology

Disadvantages

• A little bit more installation work• A little bit more expensive – To be considered in relation to advantages and

options

• Catalogues from various manufacturers (Schneider Electric, ABB, Siemens, Legrand, Hager, etc.)

• Website Eltako: www.eltako.com

Minute lecture pulse_switches

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