“kb” - “km” series limit switches

““KB” - “KM” SERIES LIMIT SWITCHESKB” - “KM” SERIES LIMIT SWITCHES

2M22 GB 14 10 03

““KB”KB” - - “KM” S“KM” SERIES LIMIT SWITCHESERIES LIMIT SWITCHESFACTS

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.

3M22 GB 14 10 03

““KB”KB” - - “KM” S“KM” SERIES LIMIT SWITCHESERIES LIMIT SWITCHESFACTS

Three fundamental parts compose the LIMIT SWITCH:

Head

Contact block

Body

• Operating head

• Body (housing or container)

• Contact block

4M22 GB 14 10 03

• KB series with plastic body

• KM KM series with metal body

““KB”KB” - - “KM” S“KM” SERIES LIMIT SWITCHESERIES LIMIT SWITCHES

LOVATO Electric LOVATO Electric has innovated the range of limit by designing the has innovated the range of limit by designing the new K series with dimensions per EN50047: new K series with dimensions per EN50047:

5M22 GB 14 10 03

POSITION DETECTION VERSION


SAFETY VERSION

6M22 GB 14 10 03

AVAILABLE RANGE

Metal Model

19 operating heads

9 types of contact blocks

Plastic Model

2 auxiliary contacts 3 auxiliary contacts

SPARE PARTSIncorporated

auxiliary contacts

Incorporated auxiliary contacts


7M22 GB 14 10 03


KB plastic series

Product body made of double insulated, self-extinguishing

thermoplastic polymer

KM metal series

Product body made of Aluminium-zinc alloy (zama)

MODULARITY

PLASTIC AND METAL BODY

8M22 GB 14 10 03

““KB”KB” - - “KM” S“KM” SERIES LIMIT SWITCHESERIES LIMIT SWITCHESMODULARITY

• 19 operating heads (metal) 19 operating heads (metal) that are interchangeable and that are interchangeable and complementarycomplementary

9M22 GB 14 10 03

1NO+1NC 2NC 1NO+1NC 1NO+1NC

2NC2NO

1NO+2NC2NO+1NC 3NC

INTERCHANGEABLE AND REMOVABLE AUXILIARY CONTACTS


Snap actionSnap actionSlow breakSlow break(make before break)

Slow breakSlow break

Slow breakSlow breakSlow break

MODULARITY

10M22 GB 14 10 03

• Operating head fixing by bayonet insert mechanism.

SIMPLE ASSEMBLY

ADVANTAGESADVANTAGES


Traditional switchTraditional switch

• 4 screws• Internal components can pop out of their place

11M22 GB 14 10 03

45°

45°

45°

SIMPLE ADJUSTMENT

““KB”KB” - - “KM” S“KM” SERIES LIMIT SWITCHESERIES LIMIT SWITCHESADVANTAGESADVANTAGES

• Operating head can be adjusted at 90° angles.


12M22 GB 14 10 03


SIMPLE ADJUSTMENT


13M22 GB 14 10 03

VERY SIMPLE WIRING


• Removable auxiliary contact block for quick and easy wiring


• Cable entry in lower contacts is indirect so the user must bend cables.


• Captive cover screw.

• Cover fixed by only one captive screw and hinged on the bottom by quick removal

• Direct cable entry in lower contacts

• Terminal screw supplied open

14M22 GB 14 10 03


EXTREMELY SIMPLE WIRING



15M22 GB 14 10 03


• Body with M20 cable entry (PG13.5 cable entry on request).


CABLE ENTRY COMPLIANT WITH RECENT INTERNATIONAL STANDARDS

• PG13.5 cable entry invalidated by recent standards

16M22 GB 14 10 03

• 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).

SUMMARY SUMMARY


17M22 GB 14 10 03

• 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

TECHNICAL FEATURESTECHNICAL FEATURES


18M22 GB 14 10 03

CERTIFICATIONS - COMPLIANCECERTIFICATIONS - COMPLIANCE


COMPLIANT WITH:• EN50047• IEC/EN60947-5-1• IEC/EN60204-1• EN81-1• EN1088

CERTIFICATIONS OBTAINED:• cULus (USA and CANADA) KB… series.

19M22 GB 14 10 03

APPLICATION EXAMPLESAPPLICATION EXAMPLES


20M22 GB 14 10 03

APPLICATION EXAMPLESAPPLICATION EXAMPLES


21M22 GB 14 10 03


• 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• …

APPLICATIONSAPPLICATIONS

22M22 GB 14 10 03

K B A 1 S 11

Limit switch, K series, EN 50047 standard

Type of bodyB = Plastic housingM = Metal housing

A1 = Top push rod plungerB1 = Plastic top roller push plungerB2 = Metal top roller push plungerC1 = Plastic roller centre push leverC2 = Metal roller centre push leverD1 = Plastic roller side push leverand so on

Type of contactS = Snap actionL = Slow-break actionContact numbering11 = 1NO+1NC02 = 2NC20 = 2NO12 = 1NO+2NC21 = 2NO+1NC03 = 3NC

STOCK MANAGEMENTSTOCK MANAGEMENTInterpretation of the complete switch order codes

Example:

23M22 GB 14 10 03

K X C B S 11

Limit switch, K series, EN 50047 standardX = Accessorial identificationType of bodyCB = Plastic housingCM = metal housing

Type of contactS = Snap actionL = Slow-break action

Contact numbering11 = 1NO+1NC02 = 2NC20 = 2NO12 = 1NO+2NC21 = 2NO+1NC03 = 3NC

STOCK MANAGEMENTSTOCK MANAGEMENTBody complete with auxiliary contacts only

Example:

24M22 GB 14 10 03

K X A

Limit switch. K series, EN 50047 standard

X = Accessorial identificationA= OperatorType of operatorA1 = Top push rod plungerB1 = Plastic top roller push plungerB2 = Metal top roller push plungerC1 = Plastic roller centre push leverC2 = Metal roller centre push leverD1 = Plastic roller side push leverand so on

STOCK MANAGEMENTSTOCK MANAGEMENTOperating heads

Example:

1A

Thank you and goodbye

“kb” - “km” series limit switches

Documents

series limit switches

range of limit

head body housing

operating heads metal

m20 cable entry pg13

removable auxiliary

metal bodykb

ip20 cable connection