Hand-held Pendant Stations - EUCHNER GmbH + Co. KG

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Hand-held Pendant StationsFunction and technology used in hand-held pendant stationsThe most important machine functions can be monitored, e.g. axis selectionand axis movement, can be controlled decentrally using hand-heldpendant stations. The freedom of movement of the machine operator isincreased, and the operator can monitor and control processes withoutbeing tied to a fixed control panel.In addition to the control function, hand-held pendant stations can alsohave a safety function. For this purpose, the hand-held pendant stationsare equipped with emergency stop buttons and enabling switches.Hand-held pendant stations with enabling functionHand-held pendant stations with enabling function are essentially similarto classic enabling switches.Enabling switches are manually operated control devices that, togetherwith other control switches, enable commands related to potentially hazardousconditions to be run, as long as the enabling switches are actuatedcontinuously. These switches are used wherever personnel must workdirectly in the danger area on machines and systems. This is necessary,e.g. during setting up, programming, testing or servicing work. As perannex 1 of the Machinery Directive, the protective action of movable safetyguards can be disabled in these operating modes. The Machinery Directiveplaces the condition that these operating modes must be secured using alockable device (e.g. key-operated rotary switch) and machine operation isonly allowed to be triggered by a second, separate action. To enable theoperator in the danger area of a machine to trigger a machine movement,an enabling device should also be actuated.The operator must also be able to stop the machine movement usingthe enabling device. This task is performed by the enabling switch. Everyperson who is in the hazardous area must carry an enabling device sothat suitable action can be taken in case of danger.Two-stage or three-stage enabling switch?The operator can only start a machine movement if he/she actuates theenabling device and keeps it in the actuated position. The movement isstopped again when the switch is released. All pushbuttons and all 3-stageenabling switches feature this two-stage function (OFF-ON).However, experience shows that the operator often clenches the enablingdevice in an emergency.In this case a three-stage enabling switch is better and is specificallyrequested in many C standards. This switch has three switch positions(OFF-ON-OFF) and, if the operator clenches the switch, it is actuatedbeyond the enabling position (middle position) and the machine is shutdown as a result.If a 2-stage pushbutton is used, it must also be ensured that, in an emergency,the operator is in a position to activate an emergency stop devicein close proximity (VDI 2853). To identify the type of enabling device inthe catalog, the following symbols are used:Function sequence of two-stage pushbuttonZSG andpushbutton for HBA(2-stage with1 NO contact)ZSG(2-stage with2 NO contacts)NO E1Not actuatedContactopenclosedclosed, enablingStage 1Not actuatedNO1122NO E1, E2NONot actuatedActuating point2E1E1E22-stage pushbuttonFunction sequence of three-stage enabling switchZXE(3-stage with2 NO contacts)ZSE 2-2(3-stage with2 NO contacts and 1 positivelydriven contact)ZSE 2-4(3-stage with2 NO contactsand 2 positivelydriven contacts)EnablingStage 1Not actuatedE1E2E1E3E2E1E3E2E4ZXE123NO/NC E1, E2NO/NCNot actuated12Stage 2EnablingE1E1E2EnablingStage 2(actuating point)EnablingE1E2E1E3E2E1E3E2E431231 1Actuating point1231E1E2E1E112E3E2E3E2E422Actuating pointStage 3PressedthroughNO/NC12Not actuated1232 2Enabling32123123NCNOZSE 2-2 ZSE 2-4E3E1, E2Not actuatedE3, E4E1, E2NCNOPanic function31 1Actuating point123RestartprotectionNot actuatedNCNOSymbol for a2-stage pushbuttonSymbol for a3-stage enabling switchContactopenclosedclosed, enablingEnabling2 23Panic functionRestartprotection3-stage enabling switch6Subject to technical modifications; no responsibility is accepted for the accuracy of this information. Devices supplied may vary slightly from the illustration in the catalog.
Hand-held Pendant StationsAs can be clearly seen in the figure, the enabling function can only beachieved at stage 2. This function is provided by the closing of the normallyopen contacts (NO = E1 and E2).If the button is released, that is back from stage 2 to stage 1, the normallyopen contacts are opened again. The 2-stage pushbuttons and 3-stageenabling switches are identical in this function.If, in this example, the button on a 3-stage enabling switch is pressedpast the actuating point (stage 2) in panic (to stage 3), then not only thenormally open contacts (NO) are reset, but also the safe positively drivencontacts (NC ) in case of the ZSE series.The patented switch system ensures that the enabling function does notbecome active at stage 2 on the resetting of the pushbutton from stage3 to stage 1. In this example, the enable can only be given if normallyopen and normally closed contacts are closed at the same time. This situationis only possible on actuation from stage 1 to stage 2. In the otherdirection, from stage 3 to stage 1, stage 2 is skipped and unintentionalre-starting prevented.Once the pushbutton has reached stage 1, the function sequence canbe started again.Due to its design, the switch unit also provides a wear-free, constantactuating point (stage 2).Ergonomic housingTo make the operation of machines even easier and safer for the user,EUCHNER is the first manufacturer of hand-held pendant stations to havedesigned the housing taking into account ergonomic aspects. This meansthe HBA, HBM and HBL housings have been developed such that they fitoptimally in the hand. Well-known manufacturers of machine tools andcontrol systems all over the world are already using EUCHNER hand-heldpendant stations. The wide product range extends from standard housingsto custom-built hand-held pendant stations, e.g. with LCD displays,membrane keypads and serial communication ports.Hand-held pendant stations from EUCHNERHand-held pendant stations from EUCHNER are characterized by theirrobust, ergonomic and attractive design. They are used to control axismovements of machines in setup mode, for example. The modular designof every unit permits an individual combination of safety components andfunctions as required by the customer. Depending on the size requiredand the functions to be integrated, EUCHNER offers three different typesof hand-held pendant stations:ffHBAThe HBA is the smallest and handiest of the hand-held pendant stationsfrom EUCHNER. Its compact size allows the HBA to be fastened on themachine without taking up much space. Its low weight permits comfortableworking and operation, even over extended periods.ffHBMThe HBM is based on the ergonomic shape of the HBA. It additionally offersmore space and greater flexibility for integrating more componentsand functions.ffHBLThe HBL is the largest hand-held pendant station from EUCHNER. It isespecially robust and offers maximum flexibility for custom combinationof components, even components with a larger depth.Kits for hand-held pendant stationsTo enable you to use ergonomically designed housings even for smallquantities, e.g. prototypes or special versions, EUCHNER provides kitsfor hand-held pendant stations. As a result you can assemble a hand-heldpendant station in a user-friendly housing to suit your requirements.Explanation of symbols and notationSymbols and specific notation related to the switches or the switchingcontact are used time and again in the catalog.The following example is intended to explain these aspects:ffNotation 1 NC + 1 NODesign prize for hand-held pendant station HBAExplanation:Normally closed contacts are termed NC, normally open contacts NO.The number indicates how many contacts are available. The symbolbehind the NC defines that the NC contact is a positively driven contact.This switch therefore has one normally closed contact and one normallyopen contact; the normally closed contact is a positively driven contact.Custom hand-held pendant stationsCustomized hand-held pendant stations based on the standard devices canalso be produced in small quantities. In order to use these ergonomicallydesigned housings for the various requirements, EUCHNER offers theoption of customized solutions. In the Appendix, you will find forms whichcan be used to describe your requirements. We will be happy to draw upa quotation based on your requirements.Subject to technical modifications; no responsibility is accepted for the accuracy of this information. Devices supplied may vary slightly from the illustration in the catalog.7
Page 5: GeneralStandards and approvalsStand
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Accessory Kit for Hand-held Pendant
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Holders for Hand-held Pendant Stati
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Electronic HandwheelsFunction and t
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Electronic HandwheelsHandwheel HKBf
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Electronic HandwheelsHandwheel HKCf
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Electronic HandwheelsHandwheel HKDf
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Electronic HandwheelsHandwheel HWAf
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Electronic HandwheelsHandwheel HWBf
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fElectronic HandwheelsAccessoriesFr
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∅ 8AppendixDimension drawing - HB
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AppendixRequest form for hand-held
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AppendixRequest form for hand-held
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AppendixHand-held pendant stations
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Item IndexItem Order no. Page Item
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Item IndexOrder no. Item Page Order
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RepresentativesInternationalAustral
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ENEUCHNER GmbH + Co. KGKohlhammerst
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Hand-held Pendant Stations - EUCHNER GmbH + Co. KG

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