1、BSI Standards PublicationBS EN 14908-3:2014Open Data Communication inBuilding Automation, Controlsand Building Management Control Network ProtocolPart 3: Power Line Channel SpecificationBS EN 14908-3:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14908-3:2
2、014.It supersedes BS EN 14908-3:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/16, Performance requirements for control systems.A list of organizations represented on this committee can beobtained on request to its secretary.This publication d
3、oes not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 79426 1ICS 35.240.99; 91.140.01; 97.120Compliance with a British Standard cannot confer
4、 immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedBS EN 14908-3:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14908-3 April 2014 ICS 35.2
5、40.99; 97.120; 91.140.01 Supersedes EN 14908-3:2006English Version Open Data Communication in Building Automation, Controls and Building Management - Control Network Protocol - Part 3: Power Line Channel Specification Rseau ouvert de communication de donnes pour lautomatisation, la rgulation et la g
6、estion technique du btiment - Protocole de contrle du rseau - Partie 3 : Spcifications des communications par courants porteurs Offene Datenkommunikation fr die Gebudeautomation und Gebudemanagement - Gebude-Netzwerk-Protokoll -Teil 3: Kommunikation ber die StromversorgungsleitungenThis European Sta
7、ndard was approved by CEN on 12 April 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning
8、such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its
9、own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany
10、, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NO
11、RMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14908-3:2014 EBS EN 14908-3:2014EN 14908-3: 2014 (E) 2 Contents Foreword 3 Introduction . 4 1 Scope 5 2 Nor
12、mative references 5 3 Terms and definitions . 5 4 General description . 6 4.1 Electrical safety 6 4.2 Functional partitioning of PL specification . 6 5 Power Line Medium specifications 6 5.1 Power 6 5.2 Data channel . 6 5.3 Physical and electrical specifications . 6 5.4 Connectors and coupling . 7 5
13、.5 Signal coupling between phases . 7 5.6 Surge protection and related devices . 7 6 PL Node specifications . 7 6.1 Compliance . 7 6.2 Interface to MAC sub-layer . 7 6.3 Word encoding . 8 6.4 PL packet timing 8 6.5 Transmitter characteristics . 8 6.5.1 Carrier modulation . 8 6.5.2 Waveform amplitude
14、 . 8 6.5.3 Device coupling . 9 6.5.4 Single phase coupling . 9 6.5.5 Multiple phase coupling 9 6.6 Receiver characteristics . 9 6.6.1 Receive mode effective input impedance . 9 6.6.2 Receiver performance . 10 6.6.3 Receiving on a quiet line . 11 6.6.4 Receiving with interference 11 6.6.5 Receiving t
15、hrough a distorted channel . 13 6.6.6 Receiving with impulsive noise 13 Bibliography 15 BS EN 14908-3:2014EN 14908-3: 2014 (E) 3 Foreword This document (EN 14908-3:2014) has been prepared by Technical Committee CEN/TC 247 “Building Automation, Controls and Building Management”, the secretariat of wh
16、ich is held by SNV. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2014 and conflicting national standards shall be withdrawn at the latest by October 2014. Attention is drawn to the poss
17、ibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14908-3:2006. This European Standard is part of a series of standards for open data tran
18、smission in building automation, control and in building management systems. The content of this European Standard covers the data communications used for management, automation/control and field functions. EN 14908-3 is part of a series of European Standards under the general title Control Network
19、Protocol (CNP), which comprises the following parts: Part 1: Protocol stack; Part 2: Twisted pair communication; Part 3: Power line channel specification; Part 4: IP-Communication; Part 5: Implementation; Part 6: Application elements. According to the CEN-CENELEC Internal Regulations, the national s
20、tandards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
21、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14908-3:2014EN 14908-3: 2014 (E) 4 Introduction This part of EN 14908 specifies the Control Network Power Line (PL) Channel and serves as a compan
22、ion document to EN 14908-1:2014. Its purpose is to present the information necessary for the development of a PL physical network and nodes to communicate and share information over that network. This is one of a series of documents covering the various media that comprise the CNP standard. This par
23、t of EN 14908 covers the complete physical layer (OSI layer 1) including the interface to the Medium Access Control (MAC) Sub-Layer and the interface to the medium. It includes parameters specific to the PL channel type, even though the parameters may be controlled at an OSI layer other than layer 1
24、. This part of EN 14908 also provides a set of guideline physical and electrical specifications for the power line environment as an aid in developing products for that environment. This part of EN 14908 has been prepared to provide mechanisms through which various vendors of building automation, co
25、ntrol and of building management systems may exchange information in a standardised way. It defines communication capabilities. This part of EN 14908 is used by all involved in design, manufacture, engineering, installation and commissioning activities. The CNP specification model is based on the OS
26、I 7-layer model Reference Model. There are also important extensions to the OSI Reference Model. Figure 1 shows the scope of this specification in reference to the entire CNP model. In this European Standard, only the parts of the model relevant to power line communication are specified. Anything ou
27、tside this boundary is covered in other parts of the standard. Similar specifications exist for other CNP media. Figure 1 Relationship of CNP 3 specification to the CNP 1 specification BS EN 14908-3:2014EN 14908-3: 2014 (E) 5 1 Scope This European Standard specifies all the information necessary to
28、facilitate the exchange of data and control information over the power line medium for networked control systems in commercial Building Automation, Controls and Building Management. This European Standard establishes a minimal set of rules for compliance. It does not rule out extended services to be
29、 provided, given that the rules are adhered to within the system. It is the intention of the standard to permit extended services (defined by users) to coexist. Certain aspects of this standard are defined in other documents. These documents are referenced where relevant. In the case where a referen
30、ced standard conflicts with this European Standard, this part of EN 14908 will prevail. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. Fo
31、r undated references, the latest edition of the referenced document (including any amendments) applies. EN 14908-1:2014, Open Data Communication in Building Automation, Controls and Building Management Control Network Protocol Part 1: Protocol Stack EN 50065-1, Signalling on low-voltage electrical i
32、nstallations in the frequency range 3 kHz to 148,5 kHz Part 1: General requirements, frequency bands and electromagnetic disturbances EN 50065-2-1, Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Part 2-1: Immunity requirements for mains communications eq
33、uipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in residential, commercial and light industrial environments EN 50065-2-2, Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Part 2-2: Immunity requirements f
34、or mains communications equipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in industrial environments 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14908-1:2014 and the following, specifically with t
35、he power line medium and physical layer shown in Figure 1, apply. 3.1 PL node user node attached to the power line medium at a tap that meets the requirements of this specification 3.2 line cord cable not part of the power line network that allows a node located away from the power line network to b
36、e connected to the network 3.3 power line network communication network based on power distribution lines (“power lines”), from the final distribution transformer to and including all homes served by that transformer, including all wiring in those homes 3.4 non-network-powered node compatible node t
37、hat attaches to the power line network but does not draw any power from the network BS EN 14908-3:2014EN 14908-3: 2014 (E) 6 4 General description 4.1 Electrical safety This clause gives several recommendations related to safety concerns with respect to this European Standard. This discussion is not
38、 complete, nor does it address all possible safety issues. The designer is urged to consult, among other things, the relevant local and national electrical codes for the country of intended use. Local codes may supplement national electrical codes and impose additional safety related requirements. P
39、roducts conforming to this European Standard shall be designed, constructed, assembled, tested and installed following recognised safety provisions appropriate to products covered by the standard. Power line network cables are subject to at least five direct electrical safety hazards during their us
40、e: high-energy transients coupled into the power line network from external environmental sources; possible differences between safety grounds to which network components are connected; possible high voltages on neutral or ground wiring; possible open safety grounds; high short-circuit current level
41、s available at interface. These electrical safety hazards should be alleviated for the network to perform properly. In addition to provisions for properly handling these faults in an operational system, special measures should be taken to maintain the intended safety features during changes of an ex
42、isting network. All wire and wiring to which nodes connect should conform to wiring standards of the appropriate national code for the country of intended use and should have been inspected to comply with that code. 4.2 Functional partitioning of PL specification This specification divides the compl
43、ete power line environment into two basic parts: the powerline medium and the node physical access specification. The medium specification concerns the capabilities and properties of the physical medium. This encompasses such items as its bandwidth, frequency allocation, electrical and physical spec
44、ifications, connectors etc. The node physical access specification deals with the physical properties of that part of the node that makes contact with the medium. Also described is the interface between the physical layer and the symbol-encoding sub-layer. 5 Power Line Medium specifications 5.1 Powe
45、r The nodes should not rely on the line frequency for timing or synchronisation to perform communications. AC power may be used to power the interface and application needs of a node. 5.2 Data channel The channel occupies bandwidth from 125 kHz to 140 kHz frequency band, as defined in EN 50065-1, as
46、 a Binary Phase Shift Keyed (BPSK) modulated carrier. This channel is used to send protocol messages containing control, status, configuration and diagnostic information. The rules established in the CNP Medium Access Control (MAC) Layers and above shall be followed. The signalling characteristics o
47、f the channel are described in Clause 6. BS EN 14908-3:2014EN 14908-3: 2014 (E) 7 5.3 Physical and electrical specifications Physical and electrical specifications for the PL medium are not formally given in this European Standard since: 1) the PL medium is assumed to already exist in any environmen
48、t using power line communications and; 2) this specification lacks control over the installation of the power line medium, its physical properties, topology, or other devices connected to the medium. 5.4 Connectors and coupling If a connector is used to attach a CNP node to the power line network (a
49、s opposed to a direct connection), then the connector shall meet the following requirements: the connector shall impose a negligible signal loss (less than 0,1 dB) from the power line network and the attached node; the connector shall not impose any signal or voltage loss (greater than 0,1 dB) to the power line network (with or without a node connected to the connector). Single-phase power line node connectors are assumed to fit standard electrical outlets appropriate for the country of use and may or may not include a connection to the protect
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