precision switches euchner - teknic · switching element, but by the plunger return spring. the...

PRECISION SWITCHESPRECISION SWITCHES

CONTENTS

Single and Multiple Limit Switches

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are outstanding controls which have beendeveloped and perfected in close cooperationwith the machine tool industryover the last 40 years, by EUCHNER Germany.

The use of high-grade materials, an excellencein technology resulting in the reliableco-ordination of all necessary functions,guarantees trouble free operationunder the most arduous conditions.

TEKNIC EUCHNER precision singleand multiple limit switches are used for thecontrolling and positioning ofmachines and industrial equipment.

The main advantages of these highly accurateand reliable positioning switches are:Minimum space requirements due tocompact design,low cost connection through the use of a common wiring cable, reduction in the number ofsealing glands for cable entry, cross connection of switch elements without additional terminalboxes, and easy access to all switch stations for test, adjusting and service purposes.The following pages of this catalogue give details of the design and full technical data of thestandard range of TEKNIC EUCHNER precision single and multiple limit switches. Specialrequirements for specific control problems can be solved to your satisfaction by our designdepartment.

The system drawing shows in clear detail, the perfected design features of the TEKNICEUCHNER precision limit switch. The material used byTEKNIC EUCHNERfor the enclosure isa special aluminium alloy. The enclosure surface and thus the plunger guide are transformedby, a special surface coating into an aluminium oxide layer. This surface, combined with thehardened & polished plunger, offers particularly high wear and corrosion resistance.A variety ofenclosure designs and sizes, three different plungers for specific actuation from various direc-tions, together with switching elements for many electrical applications, offer a high degree offlexibility. The final testing of all precision multiple limit switches ensures that our customersreceive a product of excellence, which has been perfected with the EUCHNER know-how.

Have confidence in TEKNIC EUCHNER,with the back up of EUCHNER,

the oldest and most experienced manufacturer of Precision Limit Switches.

Precision and know-how,the basis for your confidence

PRECISION SINGLE & MULTIPLELIMIT SWITCHES

TEKNIC EUCHNER Precision Single and Multiple Limit Switches

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Details – Solutions with outstanding features:

The perfected technology, the use of high-grade materials for manufacturing the high precisionparts and the clever attention to details are used together to make TEKNIC EUCHNER multiplelimit switches a uniformly high quality unit which is complemented by the use of high qualityseals. The seals, made from NBR elastomer (Nitro Rubber), have a high degree of elasticity,very good mechanical properties and are resistant to all known coolant and lubricating agents.The Diaphragm SealThe diaphragm seal separates the plunger area fromthe switch chamber of the enclosure.Due to the high demands made upon the seals, theyhave a designed minimum life of 50 million opera-tions and are therefore practically undestructable .

The seal is firmly fixed to the plunger and is returnedto the free position after each operation, not by theswitching element, but by the plunger return spring.The switching element is actuated by a metal cappressed on to the seal. Switching point displace-ments (a logical consequence due to the high elastic-ity of the seal) are therefore completely eliminated.

The Cable Glands.

All cable entries are sealed with metal screw plugswhich have captive sealing rings.The main advantage of this is that the seals cannot belost or pushed out. The diameter and type of cableentry correspond to the types of cable normally usedin practice.

The Enclosure Cover.

The accurately machined cover is equipped with acaptive seal and is easily removable by screws fortesting or service purposes.

The Protection .

Each TEKNIC EUCHNER precision single or multiplelimit switch is tested before dispatch to the customer.It must comply with protection class IP 67. In order to satisfy this protection class, only highquality TEKNIC EUCHNER cable connectors with captive sealing rings should be used.

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The Plunger – Outstanding Perfectionwith High Switching Accuracy.

The high precision plungers are made from stainless steel and are lubricated for life. Thespecial telescopic design eliminate any damage to the switching element when the plungeris actuated, even if pushed in as far as the reference surface. In a single or multiple limitswitches with safety switching elements the telescopic plunger is replacedby a ‘rigid’ plunger which at overload in an emergency will open the safety circuit,even when the contact have been welded together.Three functionally different plunger designs are available in 8 or 12mm plunger spacings.

Chisel Plunger : Hardened and polished. Operating pointreproductibility up to ± 0,002mm. Max. approach speed40m/min.

Roller Plunger :Hardened roller, Operating points reproducibility up to±0,01mm. The limit switches to DIN 43697(RG type) have needle bearings. This permits problemfree approach and plunger speeds of up to 120m/min.

Ball Plunger :Hardened ball. Plunger can be actuated from variousdirections. Operating point reproducibility ±0,01mm. Maxapproach speed 40 m/min. This plunger must not be usedfor safety switch applications.

Plunger Travel Path :The schematic illustration indicates the variouspositions and terms of the plunger action. The differentvalues are determined by the type and size of thevarious multiple limit switches, and are detailed in thetechnical specifications.

Path Ratio – Plunger – Trip Dog

All the information in the technical specifications relat-ing to the plunger path refers to the axial actuation (S).When using TEKNIC EUCHNER trip dogs, all switchpoint travel date are doubled on the trip rail path (2S).

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The Switching Elements –modern technique for reliable control commands.

The TEKNIC EUCHNER precision single and multiple limit switches,shown in the catalogue are all equipped with snap-action elements.The snap – action mechanism is designed so that the switching speed is,to a great extent, independent of the actuating speed.The well proven switching systems and the high-grade materialused guarantee trouble free operation of the switching elementsfor up to 50 million mechanical operating cycles.

Switching Element ES 552 :Snap action switch with one CO-contact.Screw type connection.Used with allmultiple limit switches with 8 mm plungerspacing.

Switching Elements ES 502E :Snap action switch according to DIN 43695page 2, with 1 NC and 1 NO contact and electri-cally separated double break contacts. Captivescrew connections with self lifting clamp wash-ers. Used with all multiple limit switches with12mm plunger spacing.

For special applications different switching elements are available:For particularly low currents and voltages; mechanically actuated switching elementswith electronic output. For safety applications,switching elements with positive openingoperation according to DIN 57113/VDE 0113.Our experts welcome the opportunity to advise you in the selection of controls for yourspecific needs.

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MULTIPLE LIMIT SWITCHES. RGBF

Ordering Code R G B F

-

Type

Number of plungers (see technical data)

Plunger form (D-Chisel, R= Roller, K= Ball)

Plunger spacing (12mm)

Switching element 502

Ordering example: Multiple limit switch to DIN 43697/04 Chisel plungers/Plunger

spacing 12mm/Switching element ES 502E-RGBF 04 D 12-502

Type : RGBF

Design : DIN 43697

Plunger Spacing : 12mm

R4 R4

Plunger Forms

D=Chisel R=Roller K=Ball

120-5

nNumber ofPlungers

l1=12

l2 Pg

02 70 16

168003

169004

1610505

1612006

4072

80

6.6

Ø10

22

8

6

50

100

37

70

45

8M

AX

.

6±0.

1O

per

atin

gP

oint

Free

Pos

itio

n30 MAX.o

Pg5-

1

Trip DogReference Surface

Groove with Sealing Ring

14

l2

120

Pg

50

50

80

30n

l1

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1) The Operating Point reproducibility refers to axial operation after approx. 2000 operations.

2) Approach speed refers to a 30 Deg.angle of the trip dog. For smaller angles this speed can be exceeded.

3) All plunger travel data applies to axial actuation. When plungers are actuated by our standard trip dogs all travel data doubles on the trip rail.

TECHNICAL DATA

Enclosure Material Environmental Protection to DIN 40050Mechanical Operations to VDE 0660 part2Ambient Temperature (Deg.C)Mounting Position Plunger Material Plunger GuidePlunger Spacing (mm)Number of PlungersPlunger Form D= Chisel R=Roller (Needle Bearing) K= Ball

Operating Point Reproducibility (mm)1) – 0.002 – 0.01 – 0.01

Approach Speed max (m/min) 2) 40 120 10Approach Speed min (m/min)Plunger Travel (mm)Operating Force (N)Switching ElementSwitching Principle

Switch Contacts

Contact Material

Connections

Cable Cross Section max (mm)2)Movement Differential (mm)

Operating Point 3)Closing Times (ms)Bounce Time (ms)

Switching Frequency max (mm-1)Insulating Group to VDE 0110Nominal isolating Voltage (V) ≅Rated Breaking Capacity 250V,40-60HzRated Breaking Capacity =Switching Voltage min (V)Switching Current min at 12V(mA)Short Circuit Protection (Fuse) 10A time lag-20A quick action

60.01

15

12220V/0.5A 24V/6A

cosϕ 0.7/10A cosϕ 04/6A250

Terminals with captive screws and self-lifting clamping disc

see drawing< 4

300< 3

C

10

02 - 06

ES 502ESnap Action

1NO + 1NC, electrically separated contact bridge

Silver alloy AgNi 10-Gold, electroplated

1.50.8

OptionalStainless Steel

Maintenance Free12

Die Cast Aluminium, anodizedIP67

E3(3X107 Operations)-5 to + 80

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MULTIPLE LIMIT SWITCHES SN

Ordering Code S N 0 8 - 5 5 2

Type

Number of plungers (see technical data)

Plunger form (D= Chisel, R= Roller, K= Ball)

Plunger spacing (8mm)


Ordering example: Multiple limit switch / 03 Roller plunger/ Plunger spacing 8mm/

Switching element ES 552 – SN 03 R 08 – 552

Type : SN

Design : Without Flange

Plunger Spacing : 8mm

R2.5 R2120-5

Plunger Forms


9.5

4

Ø64.

2M

AX

3O

pera

ting

Poi

nt

Free

Pos

ition

30 MAX.O

2±0.

5

Trip DogReference Surfacel1

4.5Ø8

40

Ø4.525

2642

138

n

Pg

nNumber ofPlungers L1 Pg

02 34 9

94203

95004

95805

96606

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1) The Operating Point reproducibility refers to axial operation after approx. 2000 operations.

2) Approach speed refers to a 30 Deg. angle of the trip dog. For smaller angles this speed can be exceeded.

3) All plunger travel data applies to axial actuation. When plungers are actuated by our standard trip dogs all travel data doubles on the trip rail.

TECHNICAL DATA

Enclosure Material Environmental Protection to DIN 40050Mechanical Operations to VDE 0660 part2Ambient Temperature (Deg.C)Mounting Position Plunger Material Plunger GuidePlunger Spacing (mm)Number of PlungersPlunger Form D= Chisel R=Roller (Plain Bearing) K= Ball

Operating Point Reproducibility(mm)1) –0.02 –0.05 –0.03

Approach Speed max (m/min)2) 20 50 8Approach Speed min(m/min)Plunger Travel (mm)Operating Force (N)Switching ElementSwitching Principle Switch ContactsContact Material Connections

Cable Cross Section max (mm2)Movement Differential (mm)

Operating Point 3)Closing Time (ms)Bounce Time (ms)

Switching Frequency max (mm-1)Insulating Group to VDE 0110Nominal isolating Voltage (V) ≅Rated Breaking Capacity 250V,40-60HzRated Breaking Capacity =Switching Voltage min (V)Switching Current min at 12V(mA)Short Circuit Protection (Fuse)

1210

6A time lag 10A quick action

B250

cosϕ 0.7/4A cosϕ 04/2.5A220V/0.025A 24V/2A

See drawing<5<3200

Silver, Gold electroplatedScrew Terminals

10.2

15ES 552

Snap Action1CO

802-06

0.013

OptionalStainless Steel

-5 to +80


Maintenance Free

E3(3X107 Operations)

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LIMIT SWITCH SG 01

Ordering Code S G 0 1 - 5 5 2

Type

Plunger form ( D= Chisel, R= Roller, K= Ball )


Ordering example: Limit switch / Roller plunger / Switching element ES 552

SG 01 R- 552

Type : SG 01

Design : Without Flange

R2.5 R2120-5

Plunger Forms


9.5

4

Ø6

4.2

MA

X

3O

per

atin

gP

oint

Free

Posi

tion

2±0.

5

Trip DogReference Surface

30 MAX.o

25

26

Ø8

4.5

40

4.5

Pg

26

42

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1) The Operating Point reproducibility refers to axial operation after approx. 2000 opera-tions.

2) Approach speed refers to a 30 Deg. angle of the trip dog. For smaller angles this speed can be exceeded

3) All plunger travel data applies to axial actuation. When plungers are actuated by ourstandard trip dogs all travel data doubles on the trip rail.

TECHNICAL DATA

Enclosure Material Environmental Protection to DIN 40050Mechanical Operations to VDE 0660 part 2Ambient Temperature (Deg.C)Mounting Position Plunger Material Plunger GuideNumber of Plungers Plunger Form D= Chisel R=Roller (Plain Bearing) K= Ball

Operating Point Reproducibility (mm )-1) –0.02 –0.05 –0.03

Approach Speed max (m/min)2) 20 50 8Approach Speed min (m/min)Plunger Travel (mm)Operating Force (N)Switching Element Switching Principle Switch Contacts Contact Material Connections

Cable Cross Section max (mm 2)Movement Differential (mm)


Switching Frequency max (mm-1)Insulating Group to VDE 0110Nominal Isolating Voltage (V) ≅Rated Breaking Capacity 250V,40-60HzRated Breaking Capacity =Switching Voltage min (V)Switching Current min at 12V(mA)Short Circuit Protection (Fuse) 6A time lag-10A quick action

1012

220V/0.025A 24V/2Acosϕ 07/4A cosϕ 0.4/2.5A

250B

200< 3< 5

See drawing0.21

Screw TerminalsSilver, Gold electroplated

1 COSnap Action

ES 552


E3(3X107 Operations)-5 to + 80Optional

Stainless SteelMaintenance free

01

0.01315

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RPrecision Switches

SINGLE PLUNGER LIMIT SWITCH N1A

Ordering Code N 1 A 5 0 2

Type

Plunger form (D= Chisel, R= Roller, K= Ball)


Ordering example: Single plunger limit switch with roller plunger and switching

element ES 502E - N1A R 502

R4 R4120-5

Plunger Forms


18

12+

1

Trip Dog

30 MAX.o

Ø10

26±0.1

4H128

76

16

Ope

ratin

gP

oint

Free

Posi

tion

39

60

28 Pg 9

6.8

Ø11

Ø6.6

35

14

22

13

21

Switch diagram

Type : N1A

Design : DIN 43693

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1) The Operating Point reproducibility refers to axial operation after approx.2000 operations.

2) Approach speed refers to a 30deg angle of the trip dog. For smaller angles this speed can be exceeded.

3) All plunger travel data applies to axial actuation. When plungers are actuated by ourstandard trip dogs all travel data doubles on the trip rail.

TECHNICAL DATA

Enclosure Material Environmental Protection to DIN 40050Mechanical Operations to VDE 0660 part 2Ambient Temperature (Deg.C)Mounting Position Plunger Material Plunger GuidePlunger Form D= Chisel R=Roller (Needle Bearing) K= Ball

Operating Point Reproducibility(mm)1) –0.002 –0.01 –0.01

Approach Speed max (m/min)2) 40 80 10Approach Speed min (m/min)Plunger Travel (mm)Operating Force (N)Switching ElementSwitching Principle

Switch Contacts

Contact Material

Connections

Cable Cross Section max (mm2)Movement Differential (mm)


Switching Frequency max (mm-1)Insulating Group to VDE 0110Nominal Isolating Voltage (V) ≅Rated Breaking Capacity 250V,40-60HzRated Breaking Capacity =Switching Voltage min (V)Switching Current min at 12V(mA)Short Circuit Protection (Fuse)

Die Cast Aluminium, anodizedlP67

E 3(3x107 Operations)-5 to +80Optional

Stainless SteelMaintenance free

0.016

15ES 502E

Snap Action

See drawing<4<3

1 NO+1NC, electrically separated contact bridge

Silver alloy-AgNi 10, Gold, electroplated

1.5

10A time lag 20A quick action

Terminals with captive screws and self-lifting Clamping disc.

220V/0.5A, 24V/6A1210

300C

250cosϕ 0.7/10A cosϕ 0.4/6A

0.8

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RPrecision Switches

CABLE GLAND

Pg E

A B

A/F

TYPE LIMIT SWITCH PG E A/F A B CABLE O.DMODEL

KV 09/04 SG 9 9 17 20 6 4-6.5 SNN1A

KV 09/06 SG 9 19 17 20 6 6.5-9.5SN

N1AKV 16/06 RGBF 16 26.7 24 21 6.5 6.5-9.5KV 16/09 RGBF 16 26.7 24 21 6.5 9-13KV 16/11 RGBF 16 26.7 24 21 6.5 11.5-15.5

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Ordering Code - -

Type

Number of slots (see table above )

Slot spacing ( 8&12mm)

Length ( mm )

Ordering example: Trip rail with 4 slots, slot spacing 8mm, Length 275

UFO4-08-0275

TRIP RAIL SYSTEM - U

5

15

416 8

A

14

A

123 6

9

Type UF12

Spot spacing 8mm / 12mmMaterial Aluminium alloyLength 2000mm

Type UF8

Dimension A (mm) 60 76Number of slots. 4 6

Dimension A (mm) 24 36 48 72Number of slots. 2 3 4 6

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TRIP DOGS SYSTEM TYPE - U1216

I1 I2 Fig DIN/form 0 20.5 1 UA 4 24.5 2 UA 6.3 26.8 2 - 10 30.5 2 UA 16 41 3 UB 25 50 3 UB 40 65 3 UB 63 88 3 UB 100 125 3 UB 125 150 3 UB

Ordering Code U 1 2 1 6

Type

Length ( I1 )

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TRIP DOGS SYSTEM TYPE - U8

17

6

3

AF2.514

Fig. 13

6 l1 AF 2.5

14

Fig. 2

6

3

l1

l2

14

AF 2.5

Fig. 3

l1 l2 Fig.0 20.5 14 24.5 2

6.3 26.8 2 10 30.5 2

16 41 325 50 340 65 363 88 3

100 125 3125 150 3

Ordering Code U 8 -

Type

Length ( I1 )

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Accessories - Spare Parts

Trip Rails - Trip Dogs

Switching ElementsES 502 E

ES 552

Cable Connectors

TEKNIC EUCHNER offers a large range oftrip dogs and trip rails as operating elementsfor their multiple limit switches, described inthis catalogue. U-trip rails are available andG-trip rails. For special applications, such assafety functions for multiple limit switches, wecan supply trip dogs with special fixings onspecial request. Detailed information is givenin this catalogue under section Trip Dogs -Trip Rails.

Switching elementsES 502 E can be supplied for multiple limitswitches with 12 mm plunger spacing andsingle limit switches N1A. ES 552 for multiplelimit switches with 8mm plunger spacing, andsingle limit switches SN01.Switching elements ES 508 and ES 514 mustnot be interchanged for safety reasons.

TEKNIC EUCHNER multiple limit switches are manufac-tured and supplied in accordance with DIN 40050 andenviromental protection IP 67. In order to maintain thishigh environmental protection only high quality connec-tors must be used. Different types can be selecteddepending on the conduit thread cable entries. Pleaserefer to section on cable gland in this catalogue.

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precision switches euchner - teknic · switching element, but by the plunger return spring. the...

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