1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21860-7 SANS 53149-2:2009 Edition 1 EN 13149-2:2004 Edition 1SOUTH AFRICAN NATIONAL STANDARD Public transport Road vehicle scheduling and
4、control systems Part 2: WORLDFIP cabling specifications This national standard is the identical implementation of EN 13149-2:2004 and is adopted with the permission of the CEN, rue de Stassart 36,B-1050 Brussels. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pret
5、oria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS. SANS 53149-2:2009 Edition 1 EN 13149-2:2004 Edition 1 Table of changes Change No. Date Scope National foreword This South A
6、frican standard was approved by National Committee SABS SC 71H, Information technology Intelligent transport systems, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in February 2009. This standard ma
7、y only be used and printed by approved subscription and freemailing clients of the SABS.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN131492 July2004 ICS35.240.60;43.080.20;45.060.01 SupersedesENV131492:2000 Englishversion PublictransportRoadvehicleschedulingandcontrolsystems Part2:WORLDFIPcablin
8、gspecifications ffentlicherVerkehrPlanungsundSteuerungssysteme frStraenfahrzeugeTeil2:WORLDFIPSpezifikationfr dieVernetzung ThisEuropeanStandardwasapprovedbyCENon1April2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropean Standardthesta
9、tusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcerningsuchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytranslation
10、undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Lu
11、xembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanyme
12、ansreserved worldwideforCENnationalMembers. Ref.No.EN131492:2004:E SANS 53149-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 2 Contents page Foreword3 1 Scope4 2 Normative references4 3 Cabling specifications4 3.1 Gen
13、eral remarks.4 3.2 Characteristic impedance5 3.3 Polarity5 3.4 Signal conductors5 3.5 Connections between devices 5 3.6 Connection/disconnection of a device 5 3.7 Spur length6 3.8 Connectors7 3.9 Branch cable polarity:7 3.10 Cable jointing.8 3.11 Clustered connections to the bus8 3.12 Multiple clust
14、ers.9 3.13 Shield ground connection10 3.14 Shield connections at a device10 3.15 Noise from additional circuits 11 3.16 Trunk terminating load resistance.11 3.17 Test tap connection.12 3.18 Test device13 3.19 Power circuit initialisation13 3.20 Continuous power conditions 13 3.21 Power circuit distr
15、ibution and protection .13 3.22 Cabling inside a vehicle 13 3.22.1 General.13 3.22.2 Electrical isolation.13 3.22.3 Vehicle cable ducts.13 Annex A (informative) Cable specifications 14 Annex B (informative) Data transmission trunk cable installation guidelines.15 Bibliography 17 SANS 53149-2:2009Thi
16、s standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 3 Foreword This document (EN 13149-2:2004) has been prepared by Technical Committee CEN/TC 278, “Road Transport and Traffic Telematics“, the secretariat of which is held by NEN. T
17、his 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 February 2005, and conflicting national standards shall be withdrawn at the latest by February 2005. This document supersedes ENV 13149-2:2000 Accord
18、ing to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuani
19、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SANS 53149-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 4 1 Scope This document defines
20、 the cabling specifications for an onboard data transmission bus between the different parts of equipment for service operations and monitoring of the fleet. This document is applicable to equipment installed onboard buses, trolley buses and tramways only as part of a bus fleet operation. This equip
21、ment include operations aid systems, automatic passenger information systems, fare collection systems, etc. Equipment directly related to the functioning of the vehicle (e.g. driver dashboard, engine management, brake systems, door opening systems) are excluded from the scope of this document and ar
22、e dealt with in other standardisation bodies. This document is not applicable to tramways operated as part of a train, subway or metro operation. Two alternative transmission buses will be accepted. This document refers to one of them (known as WORLFIP and specified in EN 50170). A second set of sta
23、ndards will be published for the other solution (so called CAN). The selected bus system, between the two standardised alternatives, shall be subject to an agreement between each transport operating organisation and its equipment providers. This document covers the link between equipment inside a si
24、ngle vehicle. Although it could be applied to multiple vehicles, this application is not explicitly covered by this document. This document is the second part of a set of standards related to the onboard transmission bus, which will define the following aspects for each allowed transmission bus: cho
25、ice of the bus and general applications rules (EN 13149-1) cabling specifications (EN 13149-2, this document) message content specifications (prCEN TS 13149-3, under development) 2 Normative references The following referenced documents are indispensable for the application of this document. For dat
26、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50170 General purpose field communication system EN 61158-2:1994 Fieldbus standard for use in industrial control systems; part 2: physical layer
27、 specification and service definition (IEC 61158-2:1993) 3 Cabling specifications 3.1 General remarks The principles for the coupling of devices to the data transmission bus focus upon the longer term objectives which are to achieve the least necessary number of variants, rather than to allow for th
28、e profusion of interim and migratory solutions which may occur initially. This is especially important for public transport road vehicles, which are generally equipped in different non-correlated stages (for example, first the fare collection system, then the radio and automatic location system some
29、 months or years later, etc.) SANS 53149-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 5 It is important to understand that electrical connections onto the bus have some impact upon the network performance, and that
30、the practice is dependant upon the principles relevant to transmission lines rather than simple electrical power circuits. Since one of the main objectives is to provide the minimum amount of cabling on vehicles the basic power concepts are also covered with flexibility to suit different circumstanc
31、es. 3.2 Characteristic impedance The main trunk circuit shall be a single pair twisted and shielded cable of nominal characteristic impedance of 150 Ohms at 1Mhz with overall braided shield. This shall not be connected in the form of a ring. 3.3 Polarity The polarity of the signal conductors shall b
32、e maintained throughout the trunk: Pair 1 Wire 1 (White) - Data + Wire 2 (Black) - Data - 3.4 Signal conductors The signal conductors shall not be used for powering any devices. 3.5 Connections between devices The one pair cable can be run between devices in a daisy chain fashion but shall be termin
33、ated with a 150 resistor at each end. Key A device 1 B device 2 C device N X Data + White Y Data - Black Figure 1 Connection between devices 3.6 Connection/disconnection of a device To avoid the disruption to the trunk continuity when a device is removed, the cable shall be joined on the trunk side
34、of the device connector. This will allow removal of a device without causing a failure to the remaining network. SANS 53149-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 6 Key A device 1 D data Figure 2 Connection/di
35、sconnection of a device 3.7 Spur length To minimise the mismatch caused by a spur, the cable connection at the device shall be within 2,5 cm of the coupling transformer. Key A coupling transformer B connector D data Figure 3 Spur length SANS 53149-2:2009This standard may only be used and printed by
36、approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 7 3.8 Connectors Types of connectors are not mandatory but the following conventions are recommended: Cable Side - Socket (receptacles) Device Side - Plug (pins) Four way connectors Nine way connectors Terminal 1 a Data +
37、Terminal 1 Screen 2 b D a t a - 2 3 c DC + ve 3 4 d D C - v e 4 5 6 D a t a + 7 D a t a - 8 D C + 9 D C - When a connection that breaks into the trunk circuit is required a tap connection can be provided. This could be provided using a two pair branch cable. 3.9 Branch cable polarity: The polarity o
38、f the signal conductors shall be maintained. Pair 1 Wire 1 White Data + W i r e 2 B l a c k D a t a - Pair 2 Wire 1 Red Data + Wire 2 Green Data - See additional tables in annex, A which refers to cables for up to six pairs for additional circuits. Key A device 1 D+W data+white D-B data-black W whit
39、e B black R red G green 1 Data+ 2 Branch cable 3 Drain wire connections to shields 4 Tap box Figure 4 Branch cable polarity SANS 53149-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 8 3.10 Cable jointing The wires sha
40、ll be joined to maintain the data polarity. These shall be crimped and insulated to maintain the circuit integrity. The screen continuity shall be maintained by the drain wire. The cable sheath shall be clamped to provide strain relief. See Figures 5 and 6. Key A ground terminal (only when required)
41、 B trunk C insulated screened box D branch Figure 5 Cable tap with branch cable Key B trunk Figure 6 Cable join with a connector (CC1) 3.11 Clustered connections to the bus Provided that individual devices are not less than 8kOhms input impedance, and up to 2,5 cm length spur as required in 3.6, the
42、n up to a maximum of four devices may be clustered within a minimum trunk length of 4 metres. EXAMPLE: To comply with the above branch cables of 0,7 m could be applied where devices are clustered onto the trunk. This would provide six lengths of 0,7 m = 4,2 m which exceeds the 4 m minimum. SANS 5314
43、9-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 9 Key 1 device 1 2 device 2 3 device 3 4 device 4 A branches B trunk C multiple tap box Figure 7 Clustered connections to the bus 3.12 Multiple clusters The minimum dis
44、tance between clusters shall be not less than 4 metres, as shown in Figure 8. Figure 8 Multiple clusters Where there is a requirement to cluster devices, for example within an equipment rack, and connections to the trunk are made via a wired backplane, then active multi-port couplers (see Figure 9)
45、or matching devices such as passive attenuators (see Figure 10) should be applied either side of the cluster. See EN 61158-2:1994, section 12.2.2, Network Configuration rule No. 8. Key A active multiport coupler B trunk Figure 9 Application of an active multiport coupler SANS 53149-2:2009This standa
46、rd may only be used and printed by approved subscription and freemailing clients of the SABS.EN 13149-2:2004 (E) 10 Key 1 trunk 2 attenuator Figure 10 Application of an attenuator 3.13 Shield ground connection The trunk cable shield shall be connected directly to the vehicle ground at one point only
47、. It is recommended that this shall be close to the vehicle power supply. The tail connection shall not be common to other power return circuits and the resistances shall be as shown in Figure 11: Key A vehicle battery B power feeds C trunk shield D tail E vehicle chassis F other power returns Figur
48、e 11 Shield ground connection The tail connection shall be installed in a manner that minimises inductive or electrostatic coupling from other circuits or equipment on the vehicle. The tail connection shall be crimped onto a ring terminal, which shall be connected onto the ground terminal of one of
49、the tap boxes. 3.14 Shield connections at a device The cable shield connections at devices shall remain insulated from the vehicle chassis except as above and devices should be connected as follows: SANS 53149-2:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.
