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“KB” - “KM” SERIES LIMIT SWITCHES. “KB” - “KM” S ERIES LIMIT SWITCHES. FACTS.
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“KB” - “KM” SERIES LIMIT SWITCHES FACTS The LIMIT SWITCH is an electromechanical device, which can interact with the ambient by sensing an external movement and transforming it into an electric signal that can then be handled by an appropriate control system. It can be used to detect the position of mobile equipment and for safety applications.
“KB” - “KM” SERIES LIMIT SWITCHES FACTS Three fundamental parts compose the LIMIT SWITCH: Head Contact block • Operating head • Body (housing or container) • Contact block Body
“KB” - “KM” SERIES LIMIT SWITCHES LOVATO Electric has innovated the range of limit by designing the new K series with dimensions per EN50047: • KB series with plastic body • KM series with metal body
“KB” - “KM” SERIES LIMIT SWITCHES POSITION DETECTION VERSION SAFETY VERSION
“KB” - “KM” SERIES LIMIT SWITCHES AVAILABLE RANGE 19 operating heads Plastic Model Metal Model Incorporated auxiliary contacts Incorporated auxiliary contacts SPARE PARTS 9 types of contact blocks 2 auxiliary contacts 3 auxiliary contacts
“KB” - “KM” SERIES LIMIT SWITCHES MODULARITY PLASTIC AND METAL BODY KB plastic series KM metal series Product body made of double insulated, self-extinguishing thermoplastic polymer Product body made of Aluminium-zinc alloy (zama)
“KB” - “KM” SERIES LIMIT SWITCHES MODULARITY • 19 operating heads (metal) that are interchangeable and complementary
“KB” - “KM” SERIES LIMIT SWITCHES MODULARITY INTERCHANGEABLE AND REMOVABLE AUXILIARY CONTACTS 1NO+1NC 2NC 1NO+1NC 1NO+1NC 2NC 2NO Snap action Snap action Slow break Slow break (make before break) Slow break Slow break Slow break Slow break Slow break 1NO+2NC 2NO+1NC 3NC
“KB” - “KM” SERIES LIMIT SWITCHES ADVANTAGES SIMPLE ASSEMBLY Traditional switch • Operating head fixing by bayonet insert mechanism. • 4 screws • Internal components can pop out of their place
“KB” - “KM” SERIES LIMIT SWITCHES ADVANTAGES SIMPLE ADJUSTMENT Traditional switch 45° 45° 45° • Operating head can be adjusted at • 90° angles.
“KB” - “KM” SERIES LIMIT SWITCHES ADVANTAGES SIMPLE ADJUSTMENT
“KB” - “KM” SERIES LIMIT SWITCHES ADVANTAGES VERY SIMPLE WIRING Traditional switch • Cover fixed by only • one captive screw • and hinged on the • bottom by quick • removal • Removable auxiliary • contact block for • quick and easy • wiring • Cable entry in lower • contacts is indirect so • the user must bend • cables. • Direct cable entry in • lower contacts • Terminal screw • supplied open • Captive cover screw.
“KB” - “KM” SERIES LIMIT SWITCHES ADVANTAGES EXTREMELY SIMPLE WIRING Traditional switch
“KB” - “KM” SERIES LIMIT SWITCHES ADVANTAGES CABLE ENTRY COMPLIANT WITH RECENT INTERNATIONAL STANDARDS • Body with M20 cable • entry (PG13.5 cable • entry on request). • PG13.5 cable entry • invalidated by recent • standards
“KB” - “KM” SERIES LIMIT SWITCHES SUMMARY • Total modularity (better stock management) • Simple to install and adjust • Maximum cabling ease • Robust external parts (metal operators) • Better safety with the new blocks with 3 auxiliary • contacts • Comply with recent standards REQUIREMENTS • (M20 cable entry).
“KB” - “KM” SERIES LIMIT SWITCHES TECHNICAL FEATURES • Operating heads: Aluminium-zinc alloy (zama) • KB: Self-extinguishing double-insulated polymer • thermoplastic body housing • KM: Aluminium-zinc alloy (zama) body housing • Body degree of protection: IP65 • Terminal degree of protection: IP20 • Cable connection: Self-releasing screw terminal • Rated thermal current Ith: 10A • IEC/EN 60947-5-1 contact designation: A600 Q600 • Rated insulation voltage Ui: 690VAC • Rated impulse withstand voltage Uimp: 6kV • Cable entry: M20
“KB” - “KM” SERIES LIMIT SWITCHES CERTIFICATIONS - COMPLIANCE • COMPLIANT WITH: • EN50047 • IEC/EN60947-5-1 • IEC/EN60204-1 • EN81-1 • EN1088 • CERTIFICATIONS OBTAINED: • cULus (USA and CANADA) KB… series.
“KB” - “KM” SERIES LIMIT SWITCHES APPLICATION EXAMPLES
“KB” - “KM” SERIES LIMIT SWITCHES APPLICATION EXAMPLES
“KB” - “KM” SERIES LIMIT SWITCHES APPLICATIONS • Elevators and lifts • Mobile protections for machinery • Assembly lines • Wood-working machines • Food processing machines • Leather-working and shoe-making machines • Band saws • Packaging and packing machines • Filling and bottling machines • Labelling machines • Automated storage • …
STOCK MANAGEMENT Interpretation of the complete switch order codes Example: K B A 1 S 1 1 Limit switch, K series, EN 50047 standard Type of body B = Plastic housing M = Metal housing A1 = Top push rod plunger B1 = Plastic top roller push plunger B2 = Metal top roller push plunger C1 = Plastic roller centre push lever C2 = Metal roller centre push lever D1 = Plastic roller side push lever and so on Type of contact S = Snap action L = Slow-break action Contact numbering 11 = 1NO+1NC 02 = 2NC 20 = 2NO 12 = 1NO+2NC 21 = 2NO+1NC 03 = 3NC
STOCK MANAGEMENT Body complete with auxiliary contacts only Example: K X C B S 1 1 Limit switch, K series, EN 50047 standard X = Accessorial identification Type of body CB = Plastic housing CM = metal housing Type of contact S = Snap action L = Slow-break action Contact numbering 11 = 1NO+1NC 02 = 2NC 20 = 2NO 12 = 1NO+2NC 21 = 2NO+1NC 03 = 3NC
STOCK MANAGEMENT Operating heads Example: K X A A 1 Limit switch. K series, EN 50047 standard X = Accessorial identification A= Operator Type of operator A1 = Top push rod plunger B1 = Plastic top roller push plunger B2 = Metal top roller push plunger C1 = Plastic roller centre push lever C2 = Metal roller centre push lever D1 = Plastic roller side push lever and so on