Allen-Bradley ControlNet 1786-6.2.1 Скачать руководство пользователя страница 19

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2-6

Planning A ControlNet Cable System

Publication 1786-6.2.1 - April 1988

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Example

If your segment requires 3 taps using 1786-RG6F/B cable, the maximum segment length is:

([20.29 db - 3*.32 db] / 7.18 db] * 1000)
(19.33 db / 7.18 db) * 1000 = 820 m (2692 ft)

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Determining How Many
Terminators You Need

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maximum allowable segment length of high-flex cable =

(20.29 db - number of taps in segment * .32 db)

cable attenuation @ 10MHz per 304 m (1000 ft)

Note: Cable attenuation is defined as the signal loss measured at 10 MHz per

1000 ft (304 m) of cable. Cable attenuation for ControlNet cables are
listed in publication AG-2.2, ControlNet Cable Systmems Component
List.

1786-XT

Содержание ControlNet 1786-6.2.1

Страница 1: ...Planning and Installation Manual ControlNet Coax Cable System Cat No 1786 6 2 1 Allen Bradley...

Страница 2: ...nes for the Application Installation and Maintenance of Solid State Control available from your local Allen Bradley office describes some important differences between solid state equipment and electr...

Страница 3: ...ing of electronics and electrical codes Abbreviations To Read chapter Understand the ControlNet Coax cable system 1 Plan a ControlNet Coax cable system 2 Install a ControlNet Coax cable system 3 For r...

Страница 4: ...85 7 1 ControlNet PLC 5 Programmable Controllers Quick Start 1785 7 4 ControlNet PLC 5 Quick Start 1785 10 6 ControlNet Coax Tap Installation Instructions 1786 2 3 ControlNet Network Access Cable Inst...

Страница 5: ...e Of Cable You Need 2 3 Determining Trunk Cable Section Lengths 2 4 Determining How Many Terminators You Need 2 5 Determining If You Need Repeaters 2 6 Configuring Your Link With Repeaters 2 7 Install...

Страница 6: ...stalling a Repeater 3 4 European Union Directive Compliance 3 5 EMC Directive 3 5 Low Voltage Directive 3 5 Selecting Where To Mount The Repeater s 3 5 Mounting The Repeater 3 6 Grounding The Repeater...

Страница 7: ...1786 6 2 1 April 1998 Appendix A Mounting Dimensions Contents A 1 Taps A 1 Universal Mounting Bracket A 2 Repeater A 2 Appendix B Adjusting The Cable Strip Tool Contents B 1 Calibrating The Cutting Bl...

Страница 8: ...yer component that reconstructs and retransmits all traffic it hears on one segment side to another segment side link a collection of nodes with unique addresses in the range of 1 99 tapr the connecti...

Страница 9: ...WUXQN FDEOH FDEOH FRQQHFWRUV WHUPLQDWRUV VHJPHQWV UHSHDWHUV OLQNV EULGJHV QHWZRUN Nodes 1RGHV DUH GHILQHG DV SK VLFDO GHYLFHV FRQQHFWLQJ WR WKH RQWURO1HW FDEOH V VWHP WKDW UHTXLUH D QHWZRUN DGGUHVV L...

Страница 10: ...PDWLRQ RQ WDSV Trunk Cable 7KH WUXQN FDEOH LV WKH EXV RU FHQWUDO SDUW RI WKH RQWURO1HW FRD FDEOH V VWHP 7KH WUXQN FDEOH LV FRPSRVHG RI PXOWLSOH VHFWLRQV RI FDEOH 7KH VWDQGDUG FDEOH WKDW FDQ EH XVHG WR...

Страница 11: ...FRQILJXUDWLRQ 6HH SDJH IRU DYDLODEOH FRQQHFWRUV Terminators WHUPLQDWRU FDW QR 7 PXVW EH LQVWDOOHG RQ WKH WDS DW HDFK HQG RI D VHJPHQW Segments VHJPHQW LV D FROOHFWLRQ RI FRD WUXQN FDEOH VHFWLRQV WDSV...

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Страница 14: ...IRU WKHVH DGGLWLRQDO QRGHV ZKHQ RX LQVWDOO WKH LQLWLDO QHWZRUN 7KLV ZLOO PLQLPL H GLVUXSWLRQ WR WKH QHWZRUN GXULQJ RSHUDWLRQ Important GLVFRQQHFWHG GURS FDEOH FDQ FDXVH QRLVH RQ WKH QHWZRUN HFDXVH RI...

Страница 15: ...HVVRUV FRPPXQLFDWLRQ LQWHUIDFHV DQG DGDSWHUV WKURXJK QHWZRUN DFFHVV SRUWV 1 3V DQG DOORZV RX WR JDLQ IXOO DFFHVV WR WKH QHWZRUN dust cap screws tap 1786 TPS TPR TPYS TPYR For noise suppression ferrite...

Страница 16: ...DWHG ZLWK RXU DSSOLFDWLRQ DQG LQVWDOODWLRQ VLWH Using a 1784 KTCX15 communication card on coax media Using a 1784 KTCX15 communication card and NAP Using a 1770 KFD15 communicaton intrafce on coax med...

Страница 17: ...GLPHQVLRQV RX VKRXOG DOZD V FDOFXODWH WKH WKUHH GLPHQVLRQDO URXWLQJ SDWK GLVWDQFH ZKHQ GHWHUPLQLQJ FDEOH OHQJWKV 6HOHFW WKH VKRUWHVW SDWK IRU URXWLQJ WKH FDEOH WR PLQLPL H WKH DPRXQW RI FDEOH RX QHHG...

Страница 18: ...OHQJWK RI P IW Example If your segment requires 10 taps the maximum segment length is 1000m 3280ft 16 3m 53 5ft x 10 2 1000m 3280ft 130 4m 427 7ft 869 6m 2852 3ft 7KH DPRXQW RI KLJK IOH 5 FDEOH 5 RX F...

Страница 19: ...2 ft 7KH WRWDO WUXQN FDEOH OHQJWK RU QXPEHU RI WDSV FDQ EH LQFUHDVHG E LQVWDOOLQJ UHSHDWHUV RQ WKH VHJPHQW 7KLV FUHDWHV DQRWKHU VHJPHQW Determining How Many Terminators You Need RX PXVW XVH WHUPLQDWRU...

Страница 20: ...URXEOHVKRRWLQJ D IDXOW UHO FRQWDFW IRU VWDWXV LQGLFDWLRQ RU VZLWFKLQJ WR D EDFNXS UHSHDWHU KHQ ZLUHG WR H WHUQDO FLUFXLWU WKLV FRQWDFW FRXOG EH XVHG WR WXUQ RII D OLJKW RU DFWLYDWH D EDFNXS UHSHDWHU 1...

Страница 21: ...WLPH GLVUXSWV FRPPXQLFDWLRQ RQ WKH QHWZRUN 8VH WKH IDXOW UHOD FRQWDFW RI WKH SULPDU UHSHDWHU WR FRQWURO SRZHU WR WKH EDFNXS UHSHDWHU This diagram shows a possible configuration for powering a backup...

Страница 22: ...OH FRQILJXUDWLRQ 7KH V VWHP VL H LV EDVHG RQ WKH PD LPXP QXPEHU RI UHSHDWHUV LQ D VHULHV DQG OHQJWK RI WKH PHGLD XVHG EHWZHHQ DQ WZR QRGHV Example segments 1 and 4 each have 2 taps and each 1000 m 328...

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Страница 24: ...segments 1 2 and 4 can contain up to 31 nodes each since they already contain one tap for a repeater segments 5 6 and 7 can contain up to 30 nodes since they already contain 2 taps for repeaters the m...

Страница 25: ...s that have yet to be connected to a node 1786 TCAP right angle jack to plug provide a 90 bend in your cable prevent bending your cable excessively See Chapter 3 for the bend radius specification See...

Страница 26: ...QRGHV IRU UHGXQGDQW PHGLD LWK UHGXQGDQW PHGLD QRGHV VHQG VLJQDOV RQ WZR VHSDUDWH VHJPHQWV 7KH UHFHLYLQJ QRGH FRPSDUHV WKH TXDOLW RI WKH WZR VLJQDOV DQG DFFHSWV WKH EHWWHU VLJQDO WR SHUPLW XVH RI WKH E...

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Страница 28: ...LFDO QRLVH LQSXWV WR FRQWUROOHUV IURP H WHUQDO VRXUFHV LQ VWDQGDUG KHQ SODQQLQJ RXU FDEOH V VWHP WKHUH DUH FHUWDLQ LQVWDOODWLRQ FRQVLGHUDWLRQV GHSHQGLQJ RQ RXU DSSOLFDWLRQ 7KHUH DUH WKUHH FDWHJRULHV R...

Страница 29: ...WHQWLDO QRLVH FRQGXFWRUV RX VKRXOG URXWH RXU FDEOH IROORZLQJ WKHVH JXLGHOLQHV LULQJ QVLGH QFORVXUHV DEOH VHFWLRQV WKDW UXQ LQVLGH SURWHFWLYH HTXLSPHQW HQFORVXUHV DUH UHODWLYHO VKRUW V ZLWK ZLULQJ H WH...

Страница 30: ...UHTXLUH VXUJH VXSSUHVVLRQ RZHYHU LQGXFWLYH ORDGV RI DF RXWSXW PRGXOHV WKDW DUH LQ VHULHV RU SDUDOOHO ZLWK KDUG FRQWDFWV UHTXLUH VXUJH VXSSUHVVLRQ WR SURWHFW WKH PRGXOH RXWSXW FLUFXLWV DV ZHOO DV WR V...

Страница 31: ...EOH P IW ZLWK WDSV PD LPXP WUXQN FDEOH OHQJWK RI KLJK IOH 5 WUXQN FDEOH P IW ZLWK WDSV WHUPLQDWRUV DUH UHTXLUHG RQ ERWK HQGV RQH WDS ZLWK DQ XQFRQQHFWHG GURS FDEOH PD EH LQVWDOOHG IRU PDLQWHQDQFH SXUS...

Страница 32: ...50 Two cable connectors areshipped witheach tap you need to order additional cable connectors for each bullet and isolated bulkhead connector you will be using number of bullet connectors x 2 number...

Страница 33: ...coax cable is being pulled through multiple conduit bends follow these specifications Wiring Inside Enclosures When the RG 6 type coax cable is not being pulled through conduit follow these specifica...

Страница 34: ...le bend radii to exceed the limits listed on page 3 1 Do not mount the tap in a position that routes the drop cable over any ac power terminals on nearby modules Mounting The Taps You can mount your C...

Страница 35: ...ly the screws that are packaged with the tap They are the proper length and head style 20084 m Y Tap T Tap dust cap dust cap Mount the universal mounting bracket on specified Allen Bradley mountingrai...

Страница 36: ...ety of screw types 20083 m body holes body holes tie wrap screws and flat washers ATTENTION Do not over tighten the screws Over tightening the screws can damage the tap The applied torque should be 0...

Страница 37: ...uct is also designed to meet Council Directive 73 23 Low Voltage by applying the safety requirements of EN 61131 2 Programmable Controllers Part 2 Equipment Requirements and Tests For specific informa...

Страница 38: ...lly or vertically in the area you selected Grounding The Repeater Use a 14 AWG wire to connect the repeater to the ground bus 20753 m 38 1mm 1 50 9 1mm 0 36 215 9mm 8 5 197 6 mm 7 78 12 77 mm 0 50 50...

Страница 39: ...ting Power And Relay Circuitry 1 Remove the terminal strip cover 2 Connect power to the repeater If you are using high voltage DC to power the 1786 RPT L1 is positive and L2 N is negative 20743a m L1...

Страница 40: ...ControlNet Cable System Publication 1786 6 2 1 April 1998 3 Connect your relay circuitry to the fault relay terminals 4 Replace the terminal strip cover L1 L2 N 20145 m contact held closed in normal o...

Страница 41: ...14 attach the cable connectors 3 15 test for electrical shorts and continuity 3 17 wire cutters crimp tool knife calibration tool ControlNetNetwork Component List AG 2 2 ControlNet Network Coax Cable...

Страница 42: ...type of cable you are using PVC CL2 or FEP CL2P If you need to change the memory blade holder see appendix B 2 Insert the cable into the cable strip tool s cutting chamber so that extra cable approxim...

Страница 43: ...tool glides easily around the cable Important On your last repetition of steps 3 and 4 apply sufficientpressureonthechambergaugeringtomake sure the ring has reached the last stage This guage moves tw...

Страница 44: ...trip the cable exposing these layers of the cable Important If you do not see the three distinct layers of cable snip off the exposed end with the wire cutters and repeat the entire cable stripping pr...

Страница 45: ...7mm 4 0 mm 20076a 1786RG6calibrationtool PVC CL2 FEP CL2P center conductor The center conductor should be 4 0 mm exactly If the center conductor is too long cut off the excess with the wire cutter fro...

Страница 46: ...e an ohmmeter or continuity tester to test for electrical continuity Important Replace the trunk cable section if problems persist with the cable after completing these tests If resistance reading ind...

Страница 47: ...slips onto the center conductor completely The back shoulder of the center pin should be up against the white insulation If it is not recheck the length of the center conductor 3 With the center pin...

Страница 48: ...oulder on the connector 7 Using the crimp tool crimp the ferrule Position the crimp tool on the ferrule as close as possible to the connector base and ferrule meeting line Press the tool tightly aroun...

Страница 49: ...ontinuity Important Replace the trunk cable section if problems persist with the cable after completing these tests 20166 ohmmeter connector body pin 20166 connector body pin If resistance reading ind...

Страница 50: ...along the cable will reflect off these unterminated ends and interfere with transmission To eliminate signal reflections from the ends of the segment you must attach a 75 terminator to the first and...

Страница 51: ...on a ControlNet link through the network access port NAP 1 Connect one end of the 1786 CP cable to the NAP on the front of the ControlNet node To connect a See programming terminal through the NAP pa...

Страница 52: ...ming terminal ATTENTION Do not use the 1786 CP cable as shown below These connections could result in network failures do not use the 1786 CP cable to connect your programming device to ControlNet two...

Страница 53: ...tor on the repeater ATTENTION Do not allow any metal portions of the tap to contact any conductive material This contact can cause noise on the network If you disconnect the tap from the repeater plac...

Страница 54: ...ove and save thedustcap locatedon thestraightorright angle connector of the designated tap on the second segment segment 2 5 Connect this tap s straight or right angle connector to the BNC connector o...

Страница 55: ...dimensionstomountyourtaps universalmounting brackets and repeaters Taps Make copies of these templates as necessary to help you mark placement for your taps T tap Y tap 35 66 mm 1 40 15 24 mm 0 60 33...

Страница 56: ...ersal Mounting Bracket Repeater 58 42 mm 2 30 49 53 mm 1 95 15 47 mm 0 609 9 53 mm 0 375 30 94 mm 1 128 19 05 mm 0 75 20170 m 50 8 mm 2 0 12 7 mm 0 5 197 6 mm 7 78 215 9 mm 8 5 9 1 mm 0 36 38 1 mm 1 5...

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Страница 58: ...RO 7KH EODGHV VKRXOG QRW EHQG VKLIW RU SHQHWUDWH WKH FDOLEUDWLRQ WRRO all 4 shield layers braid tape braid tape whiteinsulation or 1st tape center conductor 1 2 3 2 3 The first cut should cut the oute...

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Страница 60: ...H VWULS WRRO R WR VWHS OLJQ WKH PHPRU EODGH FDUWULGJH WKH VLGH ZLWK WKH UDLVHG QRWFKHV WR WKH UDLVHG DUHD RQ WKH LQVLGH RI WKH VWULS WRRO DQG VOLGH WKH QHZ PHPRU EODGH FDUWULGJH LQ WKH EODGHV VKRXOG E...

Страница 61: ...IRU SOHQXP 3 3 FDEOH RX QHHG WR LQVWDOO WKH DSSURSULDWH PHPRU EODGH KROGHU IRU WKH W SH RI FDEOH RX DUH VWULSSLQJ 39 RU 3 LIW WKH ODWFKHV RQ WKH PHPRU EODGH KROGHU DQG VZLQJ LW EDFN 6QDS WKH PHPRU EOD...

Страница 62: ...tors 1 4 2 11 2 18 optional 1 4 Coax Toolkit 3 9 component definitions 1 1 connecting cable sections 3 18 connecting devices 3 19 connecting programming termi nals through NAP 3 19 determine cable nee...

Страница 63: ...ition 1 1 planning 2 17 M media redundant 2 12 guidelines 2 13 memoryblade holder 3 10 mounting dimensions repeater 3 6 tap A 1 universal mounting bracket A 2 N NAP 2 2 2 18 3 19 network access cable...

Страница 64: ...g the memory blade hold er B 5 reversing replacing cutting blades B 3 surge suppression 2 16 T tap 1 1 1 3 2 18 determine number needed 2 1 mounting 3 2 to a universal mounting brack et 3 3 using the...

Страница 65: ...l accessibility info not in manual text illustration Technical Accuracy Completeness What information is missing Clarity Sequence What is not in the right order What is unclear Other Comments Use back...

Страница 66: ...E NECESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST CLASS MAIL PERMIT NO 18235 CLEVELAND OH POSTAGE WILL BE PAID BY THE ADDRESSEE 1 ALLEN BRADLEY DR MAYFIELD HEIGHTS OH 44124 9705 3 6...

Страница 67: ...entation Argentina Australia Austria Bahrain Belgium Brazil Bulgaria Canada Chile China PRC Colombia Costa Rica Croatia Cyprus Czech Republic Denmark Ecuador Egypt El Salvador Finland France Germany G...

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