Operation instruction - Asennustuotteet

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ABB i-bus ® KNXCommissioningCapacitive screeningOptions: up to 10 nF (standard)up to 20 nFup to 30 nFup to 40 nFThis parameter defines the degree of capacitive screening.Transmission errors can occur on extended cable lengths under certainconditions, e.g. in a 5 x 1.5 mm 2 cable, where two conductors are used as asignal line and one conductor is used for switching loads, it may result inmutual interference. If this proves to be the case in an installation, thesensitivity of the input is increased. It should be noted that the signalevaluation also slows down.Debounce timeOptions: 10/20/30/50/70/100/150 msDebouncing prevents unwanted multiple operations of the input, e.g. due tobouncing of the contact.What is the debounce time?If an edge is detected at an input, the input will react immediately tothis edge, e.g. by sending a telegram. At the same time, the durationof the debounce time T D starts. The signal on the input is notevaluated within the debounce time duration.The following example clarifies this:After detection of an edge on the input, further edges are ignored forthe debounce time T D .© 2011 ABB STOTZ-KONTAKT GmbH 86
ABB i-bus ® KNXCommissioningDistinction between short andlong operationOptions: yesnoUsing this parameter, you set if the input differentiates between short andlong operation.• yes: After opening/closing of the contact, first of all it is necessaryto ascertain whether a short or long operation has occurred here.Only thereafter will a possible reaction be triggered.NoteWith Distinction between short and long operation, two communicationobjects are visible for each input. One communication object onlytransmits during short operation, the other communication object onlyduring a long operation.The following drawing shows the function in detail:T L is the time duration, from which a long operation is detected.© 2011 ABB STOTZ-KONTAKT GmbH 87
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kgABB i-bus ® KNXBinary Inputs BE/
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ABB i-bus ® KNXGeneral1 GeneralAll
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ABB i-bus ® KNXGeneral1.2 Product
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ABB i-bus ® KNXDevice technology2
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ABB i-bus ® KNXDevice technology2.
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ABB i-bus ® KNXCommissioning3 Comm
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ABB i-bus ® KNXCommissioning3.1.1.
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ABB i-bus ® KNXAppendixA.2 Input4
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ABB i-bus ® KNXAppendixA.6 Notes©
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ABB i-bus ® KNXAppendixA.8 Notes©
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Operation instruction - Asennustuotteet

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