Elan Schaltelemente GmbH & Co. KG SHGV safety … · SHGV safety door inter-locking system Catalogue SHGV E n v i r o n m e n t a ly c o m p a t i b l e m a d e f r o m 1 00% r e

SHGV safetydoor inter-locking systemCatalogue SHGV

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ironmentally compatible

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f rom100% recyc l e

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Elan Schaltelemente GmbH & Co. KG

In the interests of a sustainable use of our world’s resources,this catalogue has been printed on 100% recycled paper

on the basis of the latest environmental technology.

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Protecting safety doors without wiring:

The SHGV safety door interlockingsystem enables cost economies to bemade in the protection of movingguards without affecting the safetylevel.

Costs economies are achieved byeliminating the wiring betweenmoving guard and switch cabinet.

The function of electrical interlock-ing is achieved by means of anintelligent key transfer between alocking device with key fitted to the

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-PRÜFZER

T.

Cost savings guard and a key-operated selectorswitch as control element.

In view of the fact that the SHGVsafety door interlocking system hasa locking function too electromag-nets to keep the safety doors lockedare not needed if overtravel motionsare expected, and, depending on theapplication, there will be no need forzero motion monitors or safe timermodules.

Example of a safety door interlockingsystem of the type series SHGV in atextiles production system.

Systemclassification

In the language of standardisation,systems which fall within the scopeof the SHGV safety door interlock-ing system are also referred to askey transfer systems or “trapped keysystems”.

Whilst not particularly prevalent incontinental Europe, but enjoyingwidespread popularity in the United

Kingdom and USA, key transfersystems are not a locallytolerated feature. InEuropean machinelegislation they are arecognised and fullyaccepted protectivedevice in terms of theprotective objectivesaspired to with the use ofinterlocking devices*.

Furthermore, the SHGV type serieshas been BG prototype tested

by the Berufsgenossen-schaftliche Institut fürArbeitssicherheit BIA,St. Augustin (No.953038 dated 28. 8.

2000).

* Refer here to EN1088 – Interlockingdevices with andwithout guard locking– General principlesand provisions fordesign – Informativeannex E: Interlockingdevices with keytransfer system

Application The SGHV type series is particularlysuitable in more complex productionsystems and plants to protect dividedmaintenance and service doorswhich are used only rarely.

Other applications include situationsin which an electrical shock ispossible, applications with higherambient temperatures, specific usesin tough ambient conditions and inchemical and process engineering in

view of the explosion protectionfeature*. By contrast, because of thekey transfer, the system is lesssuitable for charging doors ormoving guards with more frequentaccess.

* The suitability of thesystem for explosion-protected applicationsmust be checked bythe customer in eachindividual case.

Function The fundamental functional charac-teristic of a key transfer system isthat, depending on the operatingstate of the machine control system,the key is trapped and cannot bewithdrawn either

– in automatic mode (with the guardlocked) in a control element(usually in a key-operated selectorswitch)

or

– in the guard locking device,namely in a lock, if the guard isopen (in an electrically de-energised state).

In other words, a principle feature ofthe system is that the removable keyis trapped either in the guard lockingdevice or in the switch lock.

The locking device of the guard isdesigned in such a way that the keytransfer can only be enabled if theguard is closed and locked (fail-safe). Only in this way can the keybe transferred from here to the key-operated selector switch.

When the machine control system isswitched on the key is trapped andcannot be removed for as long as theswitch is set to ON.

If the transfer time between theopening of the key-operated selectorswitch and the locking of the guardis not sufficient for a hazardousmachine motion to come to astandstill, a key-operated selectorswitch interlocking device may alsobe required.

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Functionalsequence

The automatic mode of the machinecontrol system is enabled when theNC contact(s) of a 2-positionselector switch is/are closed. Thiscorresponds to the position of thekey-operated selector switch inwhich the key is trapped.

1. For interruption/shutdown ofautomatic mode, the key in thekey-operated selector switch isturned from the trapped positionto the removable position. TheNC contact(s) are positivelyopened and the automatic modeof the machine control system isautomatically disconnected.

Deactivating automatic mode

Key can be withdrawn

Key trapped

2. This enables the key to betransferred from the key-operatedselector switch to the guard.

Key transfer

3. The locking device on the guardis unlocked by turning the lockbarrel to trapped position.

Key can be withdrawn

Key trapped

4. The guard can be opened.

Guard open Key trapped

5. A mechanical fail-safe deviceprevents the key being switchedback when the guard is open.

6. If the guard is closed again it islocked once again by turning thekey back from trapped position tothe position in which it can bewithdrawn.

7. The key which is now back in thekey-operated selector switch isused to reactivate the machinecontrol system, i.e. by turning itback from the removable positionto the trapped position.

SHGV safety door interlocking system

4

Versions supplied

Scopeof delivery

The standard SHGV system consists of the following assemblies:

� Guard locking device (typeSHGV, see page 8), the design ofwhich is based on that of aposition switch with separateactuator, but the function of theposition monitoring and lockingis based exclusively on amechanical principle of operationusing the integrated lock barreland the positively connectedmechanism as well as theinteraction between actuator andthe articulating mechanism in thedevice head.

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M 5

1

SHGV/B1/..

FP

E

G

Z

R

-B

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RBIA

954040

� Version with two operatingheads (see page 10), using whichdivided gates, for example, canbe protected.

� Version with a second lockbarrel (see page 12), usingwhich the operation of lock barrel1 can be blocked if an operatorneeds to access a room andwishes to protect himself fromunintentional start-up of themachine control system by a thirdparty.

� Key (with individual cut) and amatching lock barrel in the guardlocking device and in the key-operated selector switch,withdrawal of the key only beingpossible in the safety relevantposition in each individual case.

� Optionally: key-operatedselector switch interlockingdevice with electromagneticprinciple of operation (typeSVE, see page 14) and control-lable key release (for 1 to 3 key-operated selector switches).

� Optionally: key-operatedselector switch interlockingdevice with mechanical prin-ciple of operation (type SVM,see page 18) and controllable keyrelease (for 6 or 10 keys).

� Key-operated selector switch(type SHGV/ESS, see page13), as control element if theaccess time to the guard isgreater than the stopping timeof a hazardous machinemotion.

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Applications

Use in applications without hazard-ous overtravel motions, i.e. forovertravel time < time for keytransfer.

Here: one SHGV/ESS key-operatedselector switch locks one movingguard.

Use in applications without hazard-ous overtravel motions, i.e. forovertravel time < time for keytransfer.

Here: one SHGV/ESS key-operatedselector switch locks several movingguards by means of the SVMinterlocking device.

Use in applications with hazardousovertravel motions, i.e. overtraveltime > time for key transfer.

Here: one SVE key-operatedselector switch interlocking devicelocks up to 3 moving guards.

Use in applications with hazardousovertravel motions, i.e. overtraveltime > time for key transfer.

Here: one SVE key-operatedselector switch interlocking devicelocks several moving guards bymeans of SVM interlocking device.

Applications forplants withoutovertravelmotions

Application forplants withoutovertravelmotions

Application forplants withovertravelmotions

Application forplants withovertravelmotions

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Reliablesecondaryprotectivecircuit

The scope of supply does notcontain a suitable follow-upprotective circuit for the processingof signals from the key-operatedselector switch (type SHGV/ESS) orfrom the key-operated selector

switch interlocking device (typeSVE), e.g. via a safety relay moduleof the make ELAN.-SRB.

The signals must be processed in thesame way as an electrical interlock-

ing device, i.e. depending on controlcategory, the positively opening NCcontact(s) must be open in the OFFposition of a machine control systemand vice-versa.

Frameworkconditions

When using the SHGV safety doorinterlocking system it must beensured that

– the time between switching off atthe control panel and access to theguard is greater than the stoppingtime of any hazardous motion, orthat the key-operated selectorswitch interlocking device of thetype SVE is used;

– only one key is used in the keytransfer system and any spare keysavailable are stored carefully;

– the separate actuators of theSHGV guard locking devices arefitted to the guard in such a way,e.g. with the non-reusable screwssupplied with the equipment, thatthey cannot be released by simplemeans;

– the entry throat for the separateactuator is fitted in the guardlocking device in a concealedposition where at all possible.This recommendation appliesgenerally to interlocking deviceswith separate actuator.

Please note:

• Owing to the key transfer systemthe systems are less suited tocharging doors or moving guardswith more frequent access.

• Even if key and lock barrel have200 individual cuts/tumblerarrangements, a key can be copiedin the same way as a separateactuator. Any damage caused as aresult of such wilful manipulation

of a guard no longer falls withinthe protection of statutory accidentinsurance (otherwise there wouldalso be no BG test certificate forthe SHGV system) for example.

• Every SHGV system comes with aspare key should the original onebe lost under the strict conditionthat it is kept carefully and notused in the operational keytransfer procedure.

Installation The separate actuator is mounted onthe moving guard and the SHGVlocking device on the closing edgeof the guard. When the guard isclosed the separate actuator isinserted into the entry throat of theoperating head.

The funnel shaped entry throat in theoperating head automatically centresthe actuator when the moving guardis closed. This function is supportedby rubber buffers within integratedspacer sleeves in the mounting boresof the actuator. These designfeatures thus permit tolerancesbetween the guides of the moving

guard and the entry throat of theoperating head.

The separate actuators of the devicesare always to be located in such away that they do not run out in front

of the closing edge and thus presentan additional hazard to the operators.

SHGV devices may not be used asmechanical end stops.

User information

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Design The key-operated selector switchesavailable for the SHGV system havebeen taken from the traditional Elanrange of control devices and signallamps for equipment installationwith 22.3 mm single hole mountingto DIN 50 007.

The devices consist of the assem-blies

– operating head with mountingflange

and

– contact element.

The degree of protection of the frontside is IP 65.

Only single plunger key-operatedselector switch operating heads ofthe type series SHGV/ESS21S2 withkey positions S1 (key trapped) andS2 (key removable) are available forthe SHGV system.

The standard scope of supply foreach key-operated selector switchfurther includes a contact elementEF 103 with one NC contact 11-12and one NO contact 23-24, withscrew type terminals, or optionallywith slip-on terminals.

In key withdrawal position S2, theplunger in the operating headpositively acts on the contactelement and thus positively openscontact 11-12. Two additionalcontact elements can also be snapfitted to the mounting flange and anycontact configurations can beselected.

There must, however, be at least oneNC contact 11-12 incorporated inthe safety circuit of the machinecontrol system, such that positiveopening of this contact brings aboutthe shutdown of automatic mode inthe machine control system.

Key-operated selector switches

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Safety door interlocking system –SHGV type series –version with 1 operating head

Functional anddesign features

– Key transfer system according toEN 1088

– Functionality of an interlockingdevice with guard locking

– No wiring to moving guard

– Operating head offset 4 x 90°

– Funnel-shaped entry throat foractuator*

Dimensions

* Standard actuator BO(supplied): see page22; other versions:see page 22 et seq.

EK

M 5

1

EK

M 5

1

EK

M 51

30

5,5

43

4020

47

103

25,2

31

71

31

22

40

SHGV/B1/..SHGV/R1/..

SHGV/L1/..

16 24

Basis of measurement for actuator

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R

-B

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RBIA

95

40

40

40

Control head set to front by factory2610

,5

20

32

60

9

Technical data Degree of protection Enclosure: IP 67 (1 m wg/30 m.)Operating head: IP 00

Actuating forces Insertion of actuator – 15 NWithdrawal of actuator – 5 N

Ambient temperature range –25° C ... +70° C

Storage temperature range –40° C ... +80° C

Materials used Enclosure: AlSi 12 painted signal red (RAL 3000)SHG cover: steel, passivatedPerbunan seals: oil and petrol resistant

Mechanical life 2 x 106 switching cycles

Shock resistance > 30 g/18 ms

Vibration resistance > 15 g/10 ... 200 Hz

Climatic resistance 40/91 to DIN 50 015, FW24 to DIN 50 016

Key-operated selector switch See Elan catalogue D-22.G

Supply table Brief description, function Type designation Part no.

SHGV guard locking device with standard actuator BO,key-operated selector switch ESS21S2 and contact element EF 103.1(1 NC contact/1 NO contact with screw type terminals):

– lock barrel left/locking device SHGV/L1/.(*)./ESS21S2/103 134 5400

– lock barrel right/locking device SHGV/R1/.(*)./ESS21S2/103 134 5401

– lock barrel back/locking SHGV/B1/.(*)/ESS21S2/103 134 5402

(*) Entry of the individual tumbler arrangement number at the works or by the customer

Additional text in orders required for: – additional contact elements or contact elements with other terminal types (seeElan catalogue D-22.G), – other actuators (see page 22 et seq.), – supply of key-operated selector switch interlockingdevices SVE (see page 14 et seq.)

Individual device Type designation Part no.

– Key-operated switch SHGV/ESS21S2/.(*)./103 134 5430

– Locking device SHGV/(**).1/.(*).+BO 134 5410

(*) Entry of the individual tumbler arrangement number at the works or by the customer(**) When ordering, please specify the position of the lock barrel (L, R or B).

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Safety door interlocking system –SHGV type series –versions with 2 operating heads







– with 2 operating heads for doubledoors

Dimensions


30

20

47

5,5

43

40

103

25,2

71 60

31

40

EK

M 51

22

31

SHGV/R1.1/...

SHGV/B1.1/...

SHGV/L1.1/...

135

110,

4

16 24


60

40

2610

,5

20

32Control head set to front by factory

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Actuating force Insertion of actuator – 15 NWithdrawal of actuator – 5 N










SHGV guard locking device mit 2 standard actuators BO,key-operated selector switch ESS21S2 and contact element EF 103.1(1 NC contact/1 NO contact with screw type terminals):

– lock barrel left/locking device SHGV/L1.1/.(*)./ESS21S2/103 134 5377

– lock barrel right/locking device SHGV/R1.1/.(*)./ESS21S2/103 134 5378

– lock barrel back/locking device SHGV/B1.1/.(*)/ESS21S2/103 134 5379





– Locking device SHGV/.(**).1.1/.(*).+BO 134 5381


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Safety door interlocking system –SHGV type series –version with additional lock barrel







– with additional lock barrel toprevent unexpected machine startby third party

Dimensions


EK

M 5

1

EK

M 5

1EK

M 51

30 20

47

5,5

43

40

103

25,2

31

71

60

31

2222

40

16 24


Lock barrel 1

Lock barrel 1

Lock barrel 2

Lock barrel 1 to lock the guard

Lock barrel 2 to lock lock barrel 1 when guard open

60

40

2610

,5

20

32

Control head set to front by factory

13


Actuating force Insertion of actuator – 15 NWithdrawal of actuator – 5 N










SHGV guard locking device with 2 lock barrels,standard actuator BO, key-operated selector switchESS21S2 and contact element EF 103.1(1 NC contact/1 NO contact with screw type terminals):

– lock barrel 1 left/lock barrel 2 in cover SHGV/LD1/.(*)./.(*)ESS21S2/103 134 5370

– lock barrel 1 right/lock barrel 2 in cover SHGV/RD1/.(*)./.(*)ESS21S2/103 134 5371





– Locking device SHGV/(**)D1/.(*)./.(*)+BO 134 5372


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Actuators for SHGVsafety door interlocking system


– Scope of delivery including non-reusable screws

Type designation: BORPart no.: 134 9005

– Balancing of tolerances betweenthe guide of the moving guard andthe entry throat of the operating

heads by means of rubber buffersand integrated spacing sleeves

Actuator steel, galvanised

Auxiliary stop glass fibre reinforced thermoplastic with self-extinguishing propertiesto UL 94-V-0, signal red

Rubber buffers Perbunan, oil and petrol resistant

Technical data

Actuatorfor radiuses>250 <500 mm

Type designation: BOPart no.: 134 9000

* Belongs to standardSHGV scope ofdelivery

Actuatorfor radiuses> 500 mm*

23

Bent actuatorfor radiuses> 500 mm

Bent actuatorfor radiuses>250 <500 mm

Type designation: BOWPart no.: 134 9010

Type designation: BOWRPart no.: 134 9015

24

Telescopicactuator, fixedfrom the rear

Telescopicactuator, fixedfrom the top

Type designation: BOF/HIS.1Part no.: 134 9020

Type designation: BOF/HIS.2Part no.: 134 9025

54–50

47–43

Documents

Elan Schaltelemente GmbH & Co. KG SHGV safety … · SHGV safety door inter-locking system Catalogue SHGV E n v i r o n m e n t a ly c o m p a t i b l e m a d e f r o m 1 00% r e