Inductive Limit Switches - Euchner-USA · Five different inductive multiple limit switch designs with 8 mm, 12 mm or 16 mm proximity switch spacing are available to cover a ... Inductive

More than safety.

InductiveLimit Switches

2

Quality, reliability, precision

Quality, reliability and precision are thehallmarks of our corporate philosophy.They represent concepts and valuesto which we feel totally committed. At EUCHNER, quality means that allour employees take personal respon-sibility for the company as a wholeand, in particular, for their own field ofwork. This individual commitment toperfection results in products whichare ideally tailored to the customers’needs and the requirements of themarket. After all: our customers andtheir needs are the focus of all ourefforts. Through efficient and effectiveuse of resources, the promotion ofpersonal initiative and courage in find-ing unusual solutions to the benefit ofour customers, we ensure a high levelof customer satisfaction. We familiar-ize ourselves with their needs, require-ments and products and we learnfrom the experiences of our cus-tomers’ own customers.

EUCHNER – More than safety.

Quality – made by EUCHNER

More than safety.Around the world – the Swabianspecialists in motion sequencecontrol for mechanical and sys-tems engineering.

EUCHNER’s history began in 1940 withthe establishment of an engineeringoffice by Emil Euchner. Since thattime, EUCHNER has been involved inthe design and development of switch-gear for controlling a wide variety ofmotion sequences in mechanical andsystems engineering. In 1953, EmilEuchner founded EUCHNER + Co., amilestone in the company’s history. In1952, he developed the first multiplelimit switch – to this day a symbol ofthe enterprising spirit of this family-owned company.

Automation – Safety – ManMachine

Today, our products range fromelectromechanical and electroniccomponents to complex system solu-tions. With this wide range of productswe can provide the necessary tech-nologies to offer the right solution forspecial requirements – regardless ofwhether these relate to reliable andprecise positioning or to componentsand systems for safety engineering inthe automation sector.EUCHNER products are sold through aworld-wide sales network of compe-tent partners. With our closeness tothe customer and the guarantee ofreliable solutions throughout theglobe, we enjoy the confidence of cus-tomers all over the world.

Emil Euchner, the company’s founder andinventor of the multiple

limit switch, circa 1928.

Automation

Table of Contents

3

General Information 4

Inductive Multiple Limit Switches

Type series RGBF..12/16... Upright housing according to DIN 43697 6Proximity switch spacing 12 and 16 mm

Type series SN..12/16... Upright housing with small flange 8Proximity switch spacing 12 and 16 mm

Type series GSBF..08... Upright housing 10Proximity switch spacing 8 mm

Type series GLBF..12/16... Horizontal housing 12Proximity switch spacing 12 and 16 mm

Type series GLBF..08... Horizontal housing 14Proximity switch spacing 8 mm

Technical data of the components 16

Inductive Single Limit Switches

Type series ENA... Housing according to DIN 43693 19

Type series ESN... Compact design 21

Inductive Limit Switches

Cable glands 24

Separate connector bridge 24

Plug connectors 25

Additional products 26

Accessories

Terms and explanations 27

Switching functions 28

Suppressor circuits 28

Customized versions 28

Appendix

Technical Status 03-03/06


4 Subject to technical modifications; no responsibility is accepted for the accuracy of this information.

Inductive multiple and single limit switches are used for positioning and control in all areas of mechanical and systems engineering.They are ideal for performing automation tasks in machines used in the wood, textile and plastics industries, as well as for areamonitoring in robot installations.

Thanks to their non-contact, wear-free principle of operation, inductive multiple and single limit switches are unaffected by strongvibrations or heavy soiling and have an above-average mechanical service life even under aggressive ambient conditions.

Five different inductive multiple limit switch designs with 8 mm, 12 mm or 16 mm proximity switch spacing are available to cover awide range of applications; these can be equipped in turn with a large number of different inductive switching elements. In additionto these multiple limit switches, the product range also includes single limit switches according to DIN 43693 and the particularlycompact ESN design. This flexibility ensures that a solution can be provided for practically any application.

Interchangeability with mechanical multiple and single limit switches means that machines can be converted without any problems.The switches can therefore be retrofitted on existing machine installations to take full advantage of the benefits of non-contactswitches.

The multiple limit switches can also be equipped with a mixed complement of mechanical safety switching elements and inductiveswitching elements for safety-relevant end of travel limit switching, EMERGENCY STOP functions or other safety-critical applications.In this way, the advantages of non-contact switching can be combined with positively driven NC contacts.

General Information


5Subject to technical modifications; no responsibility is accepted for the accuracy of this information.

Application examples for inductive multiple limit switches

Figu

re:

TRUM

PF G

mbH

+ C

o. K

G

Figu

re:

AUD

I AG

Figu

re:

VOLK

SWAG

EN A

G

Figu

re:

Voith

AG



Inductive multiple limit switches type series RGBF...

� Proximity switch spacing 12 or 16 mm� Upright housing according to DIN 43697� Degree of protection IP 67 according to IEC 60529

Dimension drawing

Proximity switch spacing 16 mm

Proximity switch spacing 12 mm nNumber of Housingproximity l materialswitches

2 703 804 90 Die-cast5 105 aluminum,6 120 anodized8 140

10 17012 200 Sand-cast14 240 aluminum,16 240 anodized

Note� Mixed assembly with electromechanical

safety switching elements according toIEC 60947-5-1 is possible for 12 mmproximity switch spacing on request.

1) Dimension onlyapplies forsteel (ST37) andfor EUCHNER tripdogs of type seriesUX.. / GX..

nNumber of Housingproximity l materialswitches

2 703 904 105 Die-cast5 120 aluminum,6 140 anodized8 170

10 200 Sand-castaluminum,

12 240 anodized

Actuator

Groove with sealing ring

M25 x 1,5

LED

l n

assu

red

oper

atin

gdi

stan

ce

M25 x 1,5

Actuator

Groove with sealing ring

M25 x 1,5

M25 x 1,5

l n

assu

red

oper

atin

gdi

stan

ce

LED




ACProximity Rated operating Output Switching Operating LED function Short-circuit Switching Wiringswitch distance sn function voltage indicator protection, element 1) diagramspacing [V] on the overload No.[mm] [mm] switching element protection

12 2NO 750 9

AC-2-wireNC

AC 20 - 250 yes -751 10

16 5NO on 9NC request 10

Switching elements according to NAMUR on request.

Switching elements (for technical data and wiring diagrams see page 16/17)DCProximity Rated operating Output PNP Switching Operating LED function Short-circuit Switching Wiringswitch distance sn (positive switching) function voltage indicator protection, element 1) diagramspacing Output NPN [V] on the overload No.[mm] [mm] (negative switching) switching element protection

PNPNO 777 1

NO + NC DC 10 - 55 781 312 2 NPN NO + NC 780 4

DC-2-wire NODC 15 - 55

790 7(NPN/PNP) NC

yes yes791 8

PNPNO 779; 779/2 2) 1

NO + NC DC 10 - 55 772; 772/2 2) 316 5 NPN NO + NC 771; 771/2 2) 4


on 7(NPN/PNP) NC request 8

Switching elements with increased operating distance on request.

Ordering code

Type series

Number of proximity switches

Proximity switch spacing (12 or 16 mm)

Switching element No.

Visible LED (L)

Cable entry with metric thread M25 x 1.5 (M)

Ordering example: RGBF..., 6 proximity switches, LED visible from the exterior, proximity switch spacing 12 mm,NO function, DC, positive switching,RGBF 06 X 12 - 777 L -M

Separate connector bridgeA separate connector bridge is available for making an electrical connection between individual switching elements with a commonoperating voltage. For ordering information see page 24.

R G B F X - - ML

1) When ordering single elements, please prefix the part number with ES. E.g. Switching element ES 781.2) Switching elements with 5 mm operating distance (proximity switch spacing 16 mm) are supplied with 2 different oscillator frequencies to avoid mutual interference.

Multiple limit switches must therefore be equipped alternately with these switching elements.



Inductive multiple limit switches type series SN...

� Proximity switch spacing 12 or 16 mm� Upright housing, small flange� Degree of protection IP 67 according to IEC 60529

Dimension drawing


Proximity switch spacing 12 mm nNumber of Housingproximity l a materialswitches

2 36 193 48 Die-cast4 60

24aluminum,

5 72 anodized6 84

Note� Mixed assembly with electromechanical

safety switching elements according toIEC 60947-5-1 is possible for 12 mmproximity switch spacing on request.


nNumber of Housingproximity l materialswitches

2 48 Die-cast3 72 aluminum,4 84 anodized

Actuator

assu

red

oper

atin

gdi

stan

ceM

20 x

1,5

l

LED

Actuator

assu

red

oper

atin

gdi

satn

ce

M20

x 1

,5

l

LED





12 2NO 750 9

AC-2-wireNC

AC 20 - 250 yes -751 10

16 5NO on 9NC request 10



PNPNO 777 1

NO + NC DC 10 - 55 781 312 2 NPN NO + NC 780 4


790 7(NPN/PNP) NC

yes yes791 8

PNPNO 779; 779/2 2) 1

NO + NC DC 10 - 55 772; 772/2 2) 316 5 NPN NO + NC 771; 771/2 2) 4


on 7(NPN/PNP) NC request 8

Switching elements with increased operating distance on request.

Ordering code

Type series




Visible LED (L)


Ordering example: SN..., 4 proximity switches, LED visible from the exterior, proximity switch spacing 16 mm,NO function, DC, positive switching,SN 04 X 16 - 779 L -M

Separate connector bridgeA separate connector bridge is available for making an electrical connection between individual switching elements with a commonoperating voltage. For ordering information see page 24.

S N X - - ML

1) When ordering single elements, please prefix the part number with ES. E.g. Switching element ES 781.2) Switching elements with 5 mm operating distance (proximity switch spacing 16 mm) are supplied with 2 different oscillator frequencies to avoid mutual interference.

Multiple limit switches must therefore be equipped alternately with these switching elements.



Inductive multiple limit switches type series GSBF...

� Proximity switch spacing 8 mm� Upright housing� Degree of protection IP 67 according to IEC 60529

Dimension drawing

Proximity switch spacing 8 mm nNumber of Housingproximity l materialswitches

2 483 644 645 806 80

Sand-cast8 96

aluminum,10 112

anodized12 12814 14416 16018 17620 192

Gray values on request


Actuator

assu

red

oper

atin

gdi

stan

ce

M20 x 1,5

l

M20 x 1,5




PNPNO 785 1

8 1NC

DC 10 - 30 yes yes786 5

NPNNO on 2NC request 6


1) When ordering single elements, please prefix the part number with ES. E.g. Switching element ES 785.

Ordering code

Type series


Proximity switch spacing (8 mm)



Ordering example: GSBF..., 12 proximity switches, NC function, DC, positive switching,GSBF 12 X 08 - 786 -M

G S B F X - - M0 8



Inductive multiple limit switches type series GLBF...

� Proximity switch spacing 12 or 16 mm� Horizontal housing� Degree of protection IP 67 according to IEC 60529

Dimension drawing

Proximity switch spacing 12 or 16 mm

n Proximity switch spacing l1 = 12 Proximity switch spacing l1 = 16 Housingproximity materialNumber of l2 l3 l4 M25x1.5 l2 l3 l4 M25x1.5switches

2 84 66 52 A 84 66 52 A3 84 66 52 A 100 82 68 A4 100 82 68 A 116 98 84 B + C5 116 98 84 B + C 132 114 100 B + C6 132 114 100 B + C 148 130 116 B + C Sand-cast8 148 130 116 B + C 180 162 148 B + C aluminum,

10 180 162 148 B + C 212 194 180 B + C anodized12 199 178 167 B + C 244 226 212 B + C14 228 210 196 B + C 276 258 244 B + C16 244 226 212 B + C 308 290 276 B + C18 276 258 244 B + C 340 322 308 B + C20 308 290 276 B + C - - - -



Act

uato

r

M25 x 1,5

assured operatingdistance

M25 x 1,5

l4

l3

l1

l2

LED



Ordering code

Type series




Visible LED (L)


Ordering example: GLBF..., 8 proximity switches, LED visible from the exterior, proximity switch spacing 12 mm,NO + NC switching function, DC, negative switching,GLBF 08 X 12 - 780 L -M

Separate connector bridge A separate connector bridge is available for making an electrical connection between individual switching elements with a commonoperating voltage. For ordering information see page 24.

G L B F X - - ML


PNPNO 777 1

12 NO + NC DC 10 - 55 781 3or 2 NPN NO + NC yes yes 780 416 DC-2-wire NO

DC 15 - 55on 7

(NPN/PNP) NC request 8


12 NO 750 9or 2 AC-2-wire AC 20 - 250 yes -16 751 10NC





Inductive multiple limit switches type series GLBF...

� Proximity switch spacing 8 mm� Horizontal housing� Degree of protection IP 67 according to IEC 60529

Dimension drawing



Act

uato

r

M20 x 1,5

assured operatingdistance

M20 x 1,5l2

l3

l1

nNumber of Housing proximity l1 l2 l3 materialswitches

2 64 50 393 80 66 554 80 66 55 Sand-cast5 96 82 71 aluminum,6 96 82 71 anodized8 112 98 87

10 128 114 10312 144 130 119





PNPNO 785 1

8 1NC

DC 10 - 30 yes yes786 5

NPNNO on 2NC request 6



Ordering code

Type series


Proximity switch spacing (8 mm)



Ordering example: GLBF..., 4 proximity switches, NO function, DC, positive switching,GLBF 04 X 08 - 785 -M

G L B F X - - M0 8



Technical data on the componentsParameter Value Unit

Switching element ES 785 786 787 788 777 781 780779 1) 772 1) 771 1)

779/2 772/2 771/2Proximity switch spacing 8 12 16 mmRated operating distance sn 1 2 5 mmAssured operating distance sa 0...0.8 0...1.6 0...4 mmSwitching function NO NC NO NC NO NO + NC NO NO + NCOutput PNP NPN PNP NPN PNP NPNWiring diagram 1 5 2 6 1 3 4 1 3 4LED function indicator yes

Operating voltage UB DC 10...30 DC 10...55 VPermissible residual ripple s ≤ 10 %Voltage drop Ud ≤ 2.5 VRated insulation voltage Ui DC 60 V

Rated operating current Ie 250 mAOff-state current Ir ≤ 0.05 ≤ 0.001 mANo-load current I0 ≤ 15 mA

Short-circuit andyesoverload protection, pulsed

Reverse polarity protection yesEMC compliance according to IEC 60947-5-2Differential travel H

≤ 0.1 ≤ 0.2 ≤ 0.5 mm(in installed state)Repeat accuracy R ≤ 5 %Switching frequency f ≤ 500 HzUtilization category according to

DC-13IEC 60 947-5-2

Housing material PBT glass-fiber reinforcedMaterial sensing face PBTAmbient temperature T -25 ... +70 °CConnection type Screw terminalConductor cross-section, max. 2 x 1.5 (per contact) mm²

1) Switching elements with 5 mm operating distance (proximity switch spacing 16 mm) are supplied with 2 different oscillator frequencies to avoid mutual interference.Multiple limit switches must therefore be equipped alternately with these switching elements.

When ordering single elements, please prefix the part number with ES. E.g. Switching element ES 781.

Gray values on request.

Wiring diagrams

Wiring diagram 1

DC NO, PNP

1

4

3

Wiring diagram 2

DC NO, NPN

1

4

3

Wiring diagram 3

DC NO + NC, PNP

1

4

3

2

Wiring diagram 4

DC NO + NC, NPN

1

4

3

2

Wiring diagram 5

DC NC, PNP

1

2

3

Wiring diagram 6

DC NC, NPN

1

2

3 On request versions of the switching elements for 12 mmproximity switch spacing are available for a mixed assembly withsafety switching elements according to IEC 60947-5-1.



Wiring diagrams

Wiring diagram 7

DC-2-wire, NO

4

3

Wiring diagram 8

DC-2-wire, NC

2

1

Wiring diagram 9

AC NO

3

4

L1

N

Wiring diagram 10

AC NC

1

2

L1

N

Wiring diagram 11

According to NAMUR

1

2

...N

Technical data on the componentsParameter Value Unit

Switching element ES 790 791700 1) 701 1)

750 751755 1) 756 1)

789 796797 1)

700/2 701/2 755/2 756/2 797/2Proximity switch spacing 12 16 12 16 8 12 16 mmRated operating distance sn 2 5 2 5 1 2 5 mmAssured operating distance sa 0...1.6 0...4 0...1.6 0...4 0...0.8 0...1.6 0...4 mmSwitching function NO NC NO NC NO NC NO NC - - -Output DC-2-wire 2) (PNP/NPN) AC-2-wire According to NAMURWiring diagram 7 8 7 8 9 10 9 10 11LED function indicator yes -

Operating voltage UB DC 15...55 AC 20...250 DC 7.7...9 VPermissible residual ripple s ≤ 10 - ≤ 10 %Voltage drop Ud ≤ 8 - VRated insulation voltage Ui DC 60 AC 250 DC 60 V

Rated operating current Ie 50 250 - mAOff-state current Ir ≤ 1 ≤ 3 - mAInrush current Ik (20 ms) - 1.5 - AOperating current, minimum Im 2 10 - mACurrent consumption,

- ≥ 2.5 mAsensing face not activatedCurrent consumption,

- ≤ 1 mAsensing face activated

Short-circuit andyes - -overload protection, pulsed

Reverse polarity protection yes - -EMC compliance according to IEC 60947-5-2 IEC 60947-5-6Differential travel H

≤ 0.2 ≤ 0.5 ≤ 0.2 ≤ 0.5 ≤ 0.1 ≤ 0.2 ≤ 0.3 mm(in installed state)Repeat accuracy R ≤ 5 %Switching frequency f ≤ 750 ≤ 300 ≤ 10 ≤ 2000 ≤ 1000 ≤ 500 HzUtilization category according to

DC-13 AC-140 DC-13IEC 60 947-5-2Rated line frequency - 50...60 - Hz

Housing material PBT glass-fiber reinforcedMaterial sensing face PBTAmbient temperature T -25 ... +70 °CConnection type Screw terminalConductor cross-section, max. 2 x 1.5 (per contact) mm²

1) Switching elements with 5 mm operating distance (proximity switch spacing 16 mm) are supplied with 2 different oscillator frequencies to avoid mutual interference.Multiple limit switches must therefore be equipped alternately with these switching elements.

2) DC-2-wire switching elements are not suitable for inductive loads.

When ordering single elements, please prefix the part number with ES. E.g. Switching element ES 781.

Gray values on request.



Application examples for inductive single limit switches

Figu

re:

VOLK

SWAG

EN A

G

Figu

re:

VOLK

SWAG

EN A

GFi

gure

: VO

LKSW

AGEN

AG

Figu

re:

Robe

rt B

osch

Gm

bH



Inductive single limit switches type series ENA...

� Housing according to DIN 43693�

�

Dimension drawing Wiring diagrams

M16

x1,5

Technical dataParameter Value UnitRated operating distance sn 5 mmAssured operating distance sa 0...4 mmSwitching function NO + NCOutput PNP or NPN (see Ordering table)LED function indicator See Ordering tableOperating voltage UB DC 10...55 VVoltage drop Ud ≤ 2.5 VRated insulation voltage Ui DC 60 VRated operating current Ie ≤ 250 mAOff-state current Ir ≤ 0.001 mANo-load current I0 ≤ 15 mAShort-circuit and overload protection, pulsed yesReverse polarity protection yesWire break safety yesEMC compliance according to IEC 60947-5-2Differential travel H ≤ 0.5 mmRepeat accuracy R ≤ 5 %Switching frequency f ≤ 500 HzUtilization category according to IEC 60 947-5-2 DC-13Housing material Die-cast aluminum, anodizedMaterial for the sensing face PBTAmbient temperature T - 25...+ 70 °CConnection type Screw terminalConductor cross-section, max. 2 x 1.5 (per contact) mm²Weight 0.2 kg

Ordering tableLED function indicator PNP NPN

with Item ENA10B050UP048LKK10-Mon requestOrder No. ENA 086 280

none Item ENA10B050UP048NKK10-M ENA10B050UN048NKK10-MOrder No. ENA 086 099 ENA 086 282

LED function indicator (optional)

Type of installation:flush (can be placed in a row)

DC NO + NC, PNP

1

4

3

2

DC NO + NC, NPN

1

4

3

2

Sensing face



Inductive single limit switches type series ENA...

�

�

�


M16

x1,5

Technical dataParameter Value UnitRated operating distance sn 5 mmAssured operating distance sa 0...4 mmSwitching function NO or NC (see Ordering table)Output ACLED function indicator on the switching element yesShort-circuit protection NoOperating voltage UB AC 20...250 VVoltage drop Ud ≤ 8 VRated insulation voltage Ui AC 250 VRated operating current Ie ≤ 250 mAInrush current Ik (20 ms) 1.5 AOff-state current Ir 110 V ≤ 1.5 230 V, ≤ 2.0 mAOperating current, minimum Im 5 mAEMC compliance according to IEC 60947-5-2Differential travel H ≤ 0.5 mmRepeat accuracy R ≤ 5 %Switching frequency f ≤ 10 HzUtilization category according to IEC 60 947-5-2 AC-140Rated line frequency 50 ... 60 HzHousing material Die-cast aluminum, anodizedMaterial for the sensing face PBTAmbient temperature T - 25...+ 70 °CConnection type Screw terminalConductor cross-section, max. 2 x 1.5 (per contact) mm²Weight 0.2 kg

Ordering tableLED function indicator NO NC

on the switching element Item ENA10B050AW250NNK10-M ENA10B050RW250NNK10-MOrder No. ENA 086 284 ENA 088 775

LED visible from the exterior on request.


Sensing face

AC NO

3

4

L1

N

AC NC

1

2

L1

N



Inductive single limit switches type series ESN...

�

�

�


Technical dataParameter Value UnitRated operating distance sn 5 mmAssured operating distance sa 0...4 mmOutput and switching function PNP NO or NO + NC (see Ordering table)LED function indicator yesOperating voltage UB DC 10...55 VVoltage drop Ud ≤ 2.5 VRated insulation voltage Ui DC 60 VRated operating current Ie ≤ 250 mAOff-state current Ir ≤ 0.05 mANo-load current I0 ≤ 15 mAShort-circuit and overload protection, pulsed yesReverse polarity protection yesWire break safety yesEMC compliance according to IEC 60947-5-2Differential travel H ≤ 0.5 mmRepeat accuracy R ≤ 5 %Switching frequency f ≤ 500 HzUtilization category according to IEC 60 947-5-2 DC-13Housing material Die-cast aluminum, anodizedMaterial for the sensing face PBTAmbient temperature T - 25...+ 70 °CConnection type NO PUR cable 3 x 0.25 mm²NO + NC PUR cable 4 x 0.25Weight 0.3 kg


Ordering tableConnection cable PNP NO PNP NO + NC

5 m PUR Irem ESN10B050AP048LK05P-M ESN10B050UP048LK05P-MOrder No. ESN 088 769 ESN 088 771

Other cable lengths on request. Output NPN NO + NC on request.

DC NO, PNP

BN

BK

BU

DC NO + NC, PNP

BN

BK

BU

WH

Sensing face




�

� 1)

�


Technical dataParameter Value UnitRated operating distance sn 5 mmAssured operating distance sa 0...4 mmOutput and switching function PNP NO or PNP NO + NC (see Ordering table)LED function indicator yesOperating voltage UB DC 10...55 VVoltage drop Ud ≤ 2.5 VRated insulation voltage Ui DC 60 VRated operating current Ie ≤ 250 mAOff-state current Ir ≤ 0.05 mANo-load current I0 ≤ 15 mAShort-circuit and overload protection, pulsed yesReverse polarity protection yesWire break safety yesEMC compliance according to IEC 60947-5-2Differential travel H ≤ 0.5 mmRepeat accuracy R ≤ 5 %Switching frequency f ≤ 500 HzUtilization category according to IEC 60 947-5-2 DC-13Housing material Die-cast aluminum, anodizedMaterial for the sensing face PBTAmbient temperature T - 25...+ 70 °CConnection type M12 plug connector 2)

Weight 0.1 kg1) Degree of protection only guaranteed on the usage of the plug connector on page 25.2) For the relevant plug connectors see page 25.


Ordering tablePlug connector system PNP NO PNP NO + NCPlug connector S01 Item ESN10B050AP048LKS01-M ESN10B050UP048LKS01-M

(M12, 4-pin) Order No. ESN 090 439 ESN 088 770

DC NO + NC, PNP

1

4

3

2

Sensing face

DC NO, PNP

1

4

3




�

�

�

Dimension drawing

Technical dataParameter Value UnitRated operating distance sn 5 mmAssured operating distance sa 0...4 mmSwitching function NO or NC (see Ordering table)Output ACLED function indicator yesShort-circuit protection NoOperating voltage UB AC 20...250 VVoltage drop Ud ≤ 8 VRated insulation voltage Ui AC 250 VRated operating current Ie ≤ 250 mAInrush current Ik (20 ms) 1.5 AOff-state current Ir 110 V ≤ 1.5 230 V, ≤ 2.0 mAOperating current, minimum Im 5 mAEMC compliance according to IEC 60947-5-2Differential travel H ≤ 0.5 mmRepeat accuracy R ≤ 5 %Switching frequency f ≤ 10 HzUtilization category according to IEC 60 947-5-2 AC-140Rated line frequency 50 ... 60 HzHousing material Die-cast aluminum, anodizedMaterial for the sensing face PBTAmbient temperature T - 25...+ 70 °CConnection type PVC cable 3 x 0.5 mm²Weight 0.3 kg

Ordering tableConnection cable NO NC

5 m PUR Item ESN10B050AW250LN05V-M ESN10B050RW250LN05V-MOrder No. ESN 088 773 ESN 088 774

Other cable lengths on request.


Wiring diagrams

AC NO

BN

BK

L1

NGNYE �

AC NC

BN

BU

L1

NGNYE �

Sensing face



Metric Outer cable A B E SWItem thread diameter [mm] [mm] [mm] [mm] Order No.

M [mm]EKVM12/04 M12 x 1.5 4 - 6.5 20 5 15.5 14 086 327EKVM16/04 M16 x 1.5 4 - 6.5 20 6 20 18 086 328EKVM16/05 M16 x 1.5 5 - 8 20 6 20 18 086 329EKVM16/06 M16 x 1.5 6.5 - 9.5 20 6 20 18 086 330EKVM20/06 M20 x 1.5 6.5 - 9.5 20 6 24.4 22 077 683EKVM20/09 M20 x 1.5 9 - 13 21 6 24.4 22 077 684EKVM25/09 M25 x 1.5 9 - 13 21 6.5 31.2 28 086 334EKVM25/11 M25 x 1.5 11.5 - 15.5 21 6.5 31.2 28 086 335

E M

BA

SW

Accessories

Cable glands

EUCHNER multiple limit switches are manufactured and supplied with the degree of protection IP 67 according to IEC 60529. High-quality cable glands must be used to maintain this degree of protection.The following table contains the cable glands suitable for the corresponding internal thread in the EUCHNER multiple limit switch andfor the outer diameter of the cable used.

Separate connector bridge

A separate connector bridge is available for making an electrical connection between individual switching elements with a commonoperating voltage.

n

l 1

l1 n Order No.(Number)

12 20 017 13016 16 017 131

Material: brass, nickel-plated



Plug connector type series SGLF and SWLF

�

�

�

Dimension drawing

Type seriesSGLF

Wiring diagrams

BN 1BN 1

WH

2

WH

2

3 BU3 BU

4

BK

4

BK

Type seriesSWLF

Pin assignment(view on the inserted end of the plug connector)

2

4

3

1 BN

WH

BK

BU

without LED

2

4

3

1 BN

WH

BK

BU

GNYE

with LED

inserted

inserted

Technical dataParameter Value UnitLED version without LED with operation and

function indicatorNumber of poles 4Housing material

TPU, self-extinguishinggrip/contact carrierDegree of protection according to IEC 60529 IP 67 (in the inserted and locked state)Ambient temperature - 25 to + 80 °CContact material CuZn nickel plated, 0.3 µm gold platedConnection type PUR cable, moldedConductor cross-section 4 x 0.25 mm2

Rated voltage 250 10 - 30 VRated operating current Ie 4 3 AWeight 0.2 kg

Ordering tableVersions Item Order No.Straight plug, without LED, cable 5 m PUR SGLF4-5000P 035 613Elbow plug, without LED, cable 5 m PUR SWLF4-5000P 035 618Elbow plug, with 2 LEDs, cable 5 m PUR SWLF4P-5000P 041 091

2 LEDs (option)



Precision multiple limit switches for high swit-ching point accuracy and safety

EUCHNER offers precision multiple limit switches as an alterna-tive to inductive multiple limit switches. There are four functio-nally different plunger ends available for various areas of appli-cation with 8, 12 or 16 mm plunger spacing respectively. Theprecision multiple limit switches can be assembled with snapand safety switching elements, or also in combination with in-ductive switching elements.A type series with an external membrane which is designed toresist the effect of resinous cooling lubricants is also available.This version prevents the plungers from sticking.

Technical dataHousing material anodized aluminumDegree of protection IP67Actuator chisel, roller, ball and

dome plungersSwitching point accuracy, max. ± 0.002 mmApproach speed, max. 120 m/minMechanical life up to 30 x 106 mech.operations

Trip rails / trip dogs

U-trip railsenable the adjustment of the trip dogs from the switch side. Thetrip dogs can be installed and adjusted quickly and easily in anylocation.

U-trip dogsare designed for use in U-trip rails. They have an expansion plateclamp and enable precise adjustment, even when the limit switchis activated.

G-trip railsenable the adjustment of trip dogs from the side opposite theswitch. They are made of steel and are protected from corrosionby a special surface treatment. Trip rails can be ordered pre-assembled or as a component for self-assembly.

G-trip dogsare designed for use in G-trip rails. The trip dogs are clamped inthe trip rail by a hexagon socket screw with spring washer. Thiswasher locks the trip dog in place even when the trip rail is invertical position, and allows precise adjustment.

Additional Products



Terms and explanations

Appendix

Rated operating distance sn

The rated operating distance is a generalvariable used for measurement of opera-ting distances. It does not take into ac-count either the production tolerances orchanges caused by external effects suchas voltage and temperature.

Assured operating distance sa

The assured operating distance is theoperating distance at which correct ope-ration of the inductive switching elementis guaranteed within the permissible ope-rating conditions (temperature and volta-ge).The actuation distance lies between 0 and81 % of the rated operating distance sn.

1,21 sn1,21 sn

0,81 sn0,81 sn

1,1 sn1,1 sn

0,9 sn0,9 sn

Test plate

Manufacturingtolerance

Sensing face

Inductiveswitchingelement

Totaltolerancerange sn

Differential travel HThe differential travel is the difference indistance terms between the ON point asthe test plate approaches and the OFFpoint as it moves away from the sensingface of the inductive switching element.

Differential travel

Axial approach

Opening curve

Closing curveRadialapproach

Repeat accuracy RThe repeat accuracy is the accuracy withwhich the real operating distance sr isreproducedr for two switching actions insuccession within 8 hours at an operatingtemperature of 23 ±5 °C and an operatingvoltage of UB ±5 %.

Operating voltage UB

The operating voltage defines the voltagerange in which the inductive switching ele-ment functions reliably. The specified va-lues represent limits without any toleran-ces. The values can be obtained by refer-ring to the technical data for the switchingelement. In the case of two-wire switchingelements, this is applicable only in seriesconnection with the load.

Voltage drop Ud

The voltage drop is measured across theactive output of the inductive switchingelement when the output is in the „through-connected“ condition and when the ratedoperating current Ie flows.

Rated operating current IeThe rated operating current is the nomi-nal current which can load the inductiveswitching element in continuous operation.

Off-state current IrThe off-state current is the current whichflows in the load circuit of an inductiveswitching element in the non-conductingcondition. In practical terms, this currenthas to be taken into account only for two-wire switching elements.

Operating current, minimum ImThe minimum operating current is the mi-nimum current required for the functioningof a 2-wire switching element in activeenergized condition.

Inrush current IKThe inrush current is the maximum currentwhich can flow in an AC-2-wire switchingelement for a particular period at themoment it is switched on. The details inthe technical data are valid for 20 ms.

Switching frequency fThe switching frequency is the maximumpossible number of switching operationsper second. This is determined accordingto IEC 60947-5-2 and is based on a mark-space ratio of 1:2. The switching frequen-cy is a switch-specific variable and canbe obtained by referring to the technicaldata for the switching element.

Ambient temperature TThe ambient temperature is the temperaturerange in which the reliable operation of theinductive switching element is guaranteed.This range is between - 25 and + 70°C.

Temperature drift ∆∆∆∆∆sThe temperature drift defines the offset inthe switching point in µm/K on a change inthe ambient temperature from -25 to +70 °Cunder otherwise constant measurement con-ditions.



Inductive switching elements accordingto NAMURThese switching elements fulfill the speci-fication IEC 60 947-5-6 and IEC 61 934.The current consumption at UB = 8.2 V isgreater than 2.5 mA when the oscillatorface is not activated and less than 1.0mA when the oscillator face is activated. The current consumption characteristicis linear during the transition from theinactivated to the activated state of theoscillator face, i.e. these switches do nothave a snap action.

Customized versions

DC-2-wire switching elementsTwo-wire switching elements can be usedin principle instead of mechanical swit-ches. Their low off-state current makesthem especially suitable for use in con-junction with programmable logic control-lers.Compared with three-wire switching ele-ments they have the advantage of requi-ring less wiring.

The inductive switching elements are lar-gely protected against external interferenceby use of various circuit techniques (sup-pressor circuits).For utilization category DC-13 the outputmust be protected with a free-wheelingdiode for inductive loads.

Short-circuit and overload protectionThe inductive switching elements aredesigned so that short circuits cannotdamage the outputs. Pulsed short-circuit protection is used.This means that the output transistor isswitched off and on again in quicksuccession in the event of overloading ora short-circuit. In this way, it is possible toestablish whether the fault is still presentor has been rectified.

Suppressor circuits

Transient protectionEUCHNER proximity switches are protectedagainst interference caused by the occur-rence of inductive voltage peaks in accor-dance with IEC 801-4. The respective va-lues are specified in the technical data.Testing is performed in accordance withthe stipulations in DIN VDE 0660, Part 208and IEC 947-5-2.

Wire break safetyEUCHNER proximity switches with wirebreak protection are designed so that theswitch does not output spurious signalsin the event of a break in any connectingwire.

Reverse polarity protectionProtection against reverse polarization ofthe operating voltage.

NO functionThe NO function means that the load cur-rent flows when the sensing face of theinductive switching element is activatedand that no current flows when the sen-sing face is undamped.

NO + NC functionThe NO + NC function incorporates bothan NO function and an NC function.Associated circuit diagrams and wiringdiagrams are given in the technical data.

NC functionThe NC function means that the load cur-rent does not flow when the sensing faceof the inductive switching element is acti-vated and that current flows when the sen-sing face is undamped.

Switching functions

DC NO + NC, PNP

1

4

3

2

1

2

3

DC NC, PNPDC NO, PNP

1

4

3

Increased operating distanceFor designs with 12 mm proximity switchspacing, switching elements with increa-sed operating distance are available onrequest (sn = 5 mm).Due to their technical characteristics, the-se switching elements can be used bothwith a pulsed operating voltage and anoperating voltage that is not pulsed.


29

For your notes

30

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Inductive Limit Switches - Euchner-USA · Five different inductive multiple limit switch designs with 8 mm, 12 mm or 16 mm proximity switch spacing are available to cover a ... Inductive