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ControlNet Coax Media Planning and Installation Guide

1. IP67 tap 58 4 2 30 gt 228 360 142 gt 0 90 124 0 49 12 4 0 49 A i f A A 30 7 y Y mg U 1 21 il 1 65 O O D 11 4 0 45 Y y 15 2 0 60 Front View Side View Back View Note All dimensions are in mm in 31289 M Universal Mounting The illustrations show a universal mounting bracket Bracket 58 42 a 2 30 a m 49 53 1 95 a D TS oe ND ND 15 47 O yoso 30 94 19 05 g 1 128 D 1 0 75 _ T7 t 953 AP O A 035 JJ WD Note All dimensions are in mm in 20170 m 20084 66 Publication CNET INO02B EN P June 2010 Mounting Dimensions Appendix A Transition Plate The illustration shows a transition plate For additional information on how to use the plate refer to the tap kit instructions Threaded Screw Coarse Self tapping Screw Mounting Bracket Publication CNET INO02B EN P June 2010 67 Appendix A Mounting Dimensions Notes 68 Publication CNET INO02B EN P June 2010 Appendix B Maintain the Cable Strip Tool Introduction This appendix provides instructions to perform maintenance tasks on the cable strip tool supplied with the ControlNet Coax Toolkit 1786 CTK ATTENTION Use care when using the cable strip tool to avoid personal injury A Reve
2. 30012 M Item Description Item Description 1 ControlNet cable labels 5 Screws 2 TNC or BNC connector kits 6 Ferrite beads see page 37 molded on the drop cable for noise suppression 3 Transition plate available only 7 Dust cap with T tap 4 Universal mounting bracket 8 1786 TPS 1786 TPR 1786 TPYS 1786 TPYR or 1786 TCT2BD1 tap Taps contain passive electronics and must be used for the network to function properly Other methods of connecting to coax trunk cable will result in reflected energy that will disrupt communication Publication CNET IN002B EN P June 2010 19 Chapter2 Plan a ControlNet Coax Media System Choose the Connection Programming devices can be connected to the ControlNet cable system including personal computers and HMIs Some devices have a built in for Programming Devices ControlNet interface while other devices require an intermediate device to interface with the ControlNet communication protocol See page 21 for illustrations of intermediate devices such as a USB cable You can connect a computer to your network by using any of the following components e A tap on a segment e The ControlNet access cable catalog number 1786 CP This connects yout programming devices to ControlNet nodes through network access ports NAP for full access to the network Use the 1786 CP cable when connecting a programming terminal to the network throu
3. 1786 RPA 1786 RPCD 1786 RPCD 1786 RPCD 27 Chapter2 Plan a ControlNet Coax Media System Install Repeaters in a Combination of Series and Parallel You can install repeaters in a combination of series and parallel connections to form a link Follow the guidelines listed for each type For mixed topologies series and parallel you can verify the maximum number of repeaters and media by using RSNetWorx for ControlNet software TIP If your network is configured using repeaters in combination of series and parallel you need to count the taps and repeaters in all segments IMPORTANT If the network is redundant each redundant network A or B must have the same number of repeaters configured in the same topology The illustration shows an example of repeaters installed in series and in parallel Spomen 7 Repeaters D E and F are installed in parallel Repeater D Ta 1786 RecD 1786 RPCD RPCD CH1 E CH2 oo cH1 E cH2 ET a T 0 1 Segment 2 4 i A Repeater B 1786 RPA_ 1786 RPCD 1786 RPA k 786 RPCD oo cH1 H cH2
4. TIP Many network problems are due to improperly installed connectors You should have tight fitting connectors on the ends of all of your cables Pull the connector to verify that it is attached If it is loose or comes off snip off the connector and install a new one The connector should withstand a minimum 27 kg 60 Ib pull force if properly installed 9 If your installation requires IP67 rated cabling and you plan to use the IP67 rated taps complete the following steps Slide the heat shrink tubing onto the cable a b Place the crimp ring on to the cable c Strip the cable using the 1786 CTK stripper tool d Remove an extra 25 mm 1 8 in of the jacket from the cable being careful not to cut the braid e Trim the center conductor to the required length as directed on the connector bag IMPORTANT ATTENTION A Use only the ACUM heat shrink tubing provided in the IP67 Tap and Cable Kit Do not substitute other types of heat shrink tubing Substitutions may cause a loss of the IP67 rating Be careful when using heat guns High temperatures can lead to burns risk of fire or other property damage 57 Chapter3 Install a ControlNet Coax Media System 10 Follow these guidelines when heating the tubing a Place the tubing against the shoulder of the TNC connector b Allow the heat gun to come to a temperature between 10 160 C 230 320 F c Hold the cable assembly approximately 50 mm 2 in
5. installing 48 bridge 10 bullet connector 4 C cable bend radius 18 35 37 45 52 60 determine type 22 cable connector 31 barrel 41 bullet 41 installing 48 isolated bulkhead 41 catalog number 1756 CN2R 20 1770 KFC15 21 1784 U2CN 1784 PCIC 1784 PCICS 1784 PKTCS 20 1786 BNCP 45 1786 CP 20 62 1786 CTK 49 50 1786 XT 18 25 60 categories of conductor 35 coax cable 22 codes country 22 municipal 22 National Electric 22 continuity tester 59 ControlNet cable system application considerations 35 cable connectors 31 41 choosing the cable type 22 Coax Toolkit 49 connecting cable sections 60 connecting devices 61 Publication CNET INCO2B EN P June 2010 Index connecting programming terminals through NAP 62 determine number of repeaters 25 number of taps 18 number of terminating resistors 25 trunk cable section lengths 22 type of cable connectors needed 31 ferrite beads 37 installing cable connectors 48 trunk cable 44 link 10 15 40 repeater configurations 26 mounting taps 45 network access cable 20 41 node 11 ordering components 40 planning guidelines 40 redundant media 31 repeater 14 25 41 connecting to a link 63 segment 40 stripping trunk cable 52 surge suppression 37 tap 10 18 41 mounting dimensions 65 terminating resistors 25 41 terminating segments 60 testing for electrical continuity 59 trunk cable 12 41 testing 59 wiring 35 wiring external to enclosures 36 wiring inside enclosures
6. 2460 1000 m 3280 ft 16 3 m 53 4 ft X number of taps 2 gt EE ee Psal 00 16407 Allowable amp 250 820 1 Region gt B 2 16 32 48 Number of Taps 30014 m Publication CNET INO02B EN P June 2010 23 Chapter 2 24 Plan a ControlNet Coax Media System If your segment requires 10 taps the maximum segment length is 1000 m 3280 ft 16 3 m 53 4 ft x 10 2 1000 m 3280 ft 130 4 m 427 7 ft 869 6 m 2852 3 ft Although you can use high flex RG 6 cable catalog number 1786 RGGF in your system the amount of cable you can use is less than the amount of standard RG 6 cable that can be used You should keep the amount of high flex RG 6 cable use to a minimum Use BNC bullet connectors to isolate areas that require high flex RG 6 cable from areas that require standard RG 6 cable this allows the high flex RG 6 section to be replaced before flexture life is exceeded You can determine the allowable total length of high flex RG 6 cable in your application by using the equation below Each additional tap decreases the maximum length of a segment The maximum number of taps allowed on a segment is 48 Max allowable segment length of high flex cable 20 29 db number of taps in segment 32 db Cable attenuation 10 MHz per 304 m 1000 ft Cable attenuation is defined as the signal loss measured at 10 MHz per 1000 ft 304 m of cable Cable attenuation is listed in the Contro
7. Publication CNET INO02B EN P June 2010 After terminating your segments connect your devices by e programming terminals through the NAP e the repeater to a ControlNet link To connect the ControlNet processor adapter or programming terminal via a communication interface follow these procedures 1 Remove and save the tap s dust cap on the straight or tight angle connector 2 Connect the tap s straight or right angle connector to your device If your node supports Connect the tap s straight or right angle connector Non redundant media To the channel A connector on the device channel B is not used Redundant media From trunk cable A to channel A on the your device From trunk cable B to channel B on the your device 1 While both channels are active Allen Bradley recommends using channel A for non redundant media 61 Chapter3 Install a ControlNet Coax Media System Connect Programming Terminals Through the NAP Use the ControlNet access cable catalog number 1786 CP to connect a programming terminal to any intelligent device such as a PLC processor or adapter 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 2 Connect the other end of the 1786 CP cable to the NAP on the ControlNet communication interface installed in
8. T 0 50 100 150 200 250 300 350 400 450 Allowable Coax Cable Length Difference meters Allowable Cable Length Difference vs Repeaters in Series for Fiber Media 6 Worst Case s 5 Typical Case 2 y 4 g 35 20 2 x 1 0 T T T T T T T T 50 100 150 200 250 300 350 400 450 Allowable Fiber Cable Length Difference meters For redundant cabling to function properly the data transmission skew between channel A and channel B must be 1 6 us or less Skew is defined as the signal delay difference between channel A and channel B To keep the skew at a minimum you must keep all lengths of fiber and coax as similar as possible You must also design the cable paths such that the signal passes through the same number and types of repeaters on both channels Publication CNET INO02B EN P June 2010 33 Chapter 2 Plan a ControlNet Coax Media System Decide Whether You Need IP67 Media IP67 media components are sealed ControlNet taps and connectors suitable for use in harsh environments The sealed tap contained in the ControlNet IP67 Tap and Connector Kit catalog number 1786 TCT2BD1 protects the taps connection to the trunk with an IP67 rating The 1786 TCT2BD1 connection to the node via a 1 meter drop cable is a BNC type connector and is rated at only IP20 The BNC drop cable connects to an IP20 rated device which requires a protected enclosure in a non hazardous environment Therefore the
9. Taps The maximum number of nodes per link not counting repeaters is 99 Since repeaters do not require an address they do not count against the total of 99 If each segment is less than 250 m 820 ft each segment could contain up to 47 nodes 48 connections are allowed on a 250 m 820 ft segment 1 tap for the repeater Publication CNET IN002B EN P June 2010 25 Chapter 2 26 Plan a ControlNet Coax Media System Configuring Your Link with Repeaters When you configure your link using repeaters you can install them in series parallel and a combination of series and parallel TIP When using the 1786 RPFM module we recommend horizontal mounting if cabinet temperatures are expected to approach 60 C 140 F If your expected temperatures are much lower than 60 C 140 F vertical mounting is acceptable If using vertical mounting we recommend that the 1786 RPA module be mounted at the top Install Repeaters in Series When you install repeaters in series use the RSNetWorx for ControlNet software to verify that the system is an allowable configuration The system size is based on the maximum number of repeaters in a series and length of the media used between any two nodes e 20 repeaters in series if using 1786 RPA B repeater adapters e 5 repeaters in series if using 1786 RPA A repeater adapters Repeaters add delay in the network The delays between redundant cabling at any point in the network should be e
10. away from the heat exhaust area of the heat gun while shrinking the tubing d Continuously rotate the cable assembly around the heat exhaust area of the heat gun The entire process should take about four minutes e Inspect the heat shrink tubing to ensure that there are no voids where the glue has incompletely melted noting that voids could cause a loss of the IP67 rating The tubing uses a heat activated glue to help seal around the cable and connector body Some glue may be visible after the heating process Caution as this glue is hot Shoulder of TNC Connector Total Length of Heat Shrink Tubing 31297 M 58 Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 Test for Electrical Shorts 1 Using the NetLinx Media Checker catalog number 1788 MCHKR as ani the preferred method for continuity testing attach the connector end of and Continuity the cable to the port on top of the Media Checker a Mediachecker Q Alen Bradiey WIRE MAP 31195 m 2 As a secondary method you can also use an ohmmeter or continuity tester to test for a short between the connector body and pin 3 Use shorting clips to connect a temporary short between the pin and the connector body at one end of the cable Shorting Clip 20166 Shorting Clip 4 At the other end of the cable use the NetLinx Media Checker an ohmmeter or continuity tester to test for electrical co
11. cable Number of repeaters x 2 straight T tap ControlNet Media nodes and repeaters number of nodes straight Y tap System Each tap kit contains two BNC connector trunk plugs right angle T tap Components List one dust cap one universal mounting bracket right angle Y tap publication ControlNet cable labels and two screws Repeaters AG PA002 Use a repeater to Follow guidelines on page 25 Terminating resistors Network access cable Cable connector Optional bullet and barrel connectors Isolated bulkhead e increase the number of nodes attached e extend the network by adding segments You need a terminating resistor for each end of each segment Number of segments x 2 Use this cable to temporarily connect programming devices to ControlNet nodes Number of programming devices Two cable connectors are shipped with each 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 of isolated bulkhead connectors x 2 number of taps x 2 any Spares Use these as specified on page 31 Depends on your network requirements Trunk cable Use the ControlNet Media System Components List p ublication AG PA002 to order your required length of cable See page 22 to select your cable type and determine cable length Tap dummy load 1786 TCAP Us
12. oo cH1 H CH2 ET EE Me D ok Repeaters A B and C are installed in series and connected to the repeaters in parallel via segment 7 28 Repeater F 786 RPA 1786 RPCD 1786 RPCD oo g cH1 E CH2 HE i mY nt 3 Segme Repeater C Node 3 D 1786 RPA k 1786 RPCD oo cH1 E CH2 E Y 31509 M Publication CNET IN002B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Publication CNET INO02B EN P June 2010 Install Repeaters in a Ring For a ring topology you must use the ControlNet long distance fiber repeater catalog number 1786 RPFRL or extra long distance fiber repeater catalog number 1786 RPFRXL The illustration shows an example of a ring topology om J 1786 RPA 1786 RPFRx o 1786 RPA ss 1786 RPFRX LA 1786 RPFRy 1794 ACNR15 pars ogo 5 ES Bi 1786 RPFRx a 29 Chapter2 Plan a ControlNet Coax Media System Determine Propagation Delay 30 The ControlNet maximum propagation delay specific
13. or connected to your programming terminal WARNING O The network access port is intended for temporary local programming purposes only and not intended for permanent connection If you connect or disconnect the NAP cable with power applied to any device on the network an electrical arc can occur This could cause an explosion in hazardous location installations Be sure that power is removed or the area is nonhazardous before proceeding To avoid connections that could result in network failures do not use the 1786 CP cable to connect your programming device to the ControlNet network in two ways simultaneously to connect a scanner or adapter module to a PLC processor to connect two separate ControlNet network segments 62 Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 Connect the Repeater to a ControlNet Link Follow these instructions to connect a repeater adapter to a ControlNet link 1 Remove and save the dust cap on the straight or right angle connector of the designated tap on the first segment segment 1 ATTENTION Do not allow any metal portions of the tap to contact any conductive material This contact can cause noise on the A network If you disconnect the tap from the repeater place the dust cap back on the straight or right angle connector to prevent the connector from accidentally contacting a metallic grounded surface Right angle Connect
14. sealed tap containing a 1 meter TNC to BNC drop cable is protected to a IP67 rating The illustration shows how you can use IP67 media components to protect non sealed media in a harsh environment 7 LAN ID 4 woo C J 31290 M Item Description Item Description 1 1786 TPS 8 1786 TNCLXT4 2 1786 BNC2TNC 9 Wire gland not supplied by Rockwell Automation 3 1786 TCT2BD1 10 TNC to TNC drop cable 4 1786 TNCJI4 11 IP67 compliant device 5 TNC to BNC drop cable 12 1786 RG6 6 1786 TNCLP4 13 1786 BNC 7 1786 TNCL10 Refer to the ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions supplied with the kit publication 1786 IN017 for more information 34 Publication CNET IN002B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Follow Applic ation and The following guidelines coincide with the guidelines for the installation of ali electrical equipment to minimize electrical noise inputs to controllers from Installation Guidelines external sources in IEEE standard 518 1982 The categories of conductors are shown in the table Category Includes 1 e AC power lines High power digital AC 1 0 lines High power digital DC 1 0 lines Power connections conductors from motion drives to motors N e Analog 1 0 lines and DC power lines for analog circuits Low power digital AC DC 1 0 lines Low power digital 1 0 lines ControlNet c
15. the ControlNet media system ControlLogix System User Manual publication 1756 UM001 Detailed description of how to use your ControlLogix operating system ControlNet Modular Repeater Adapter Installation Instructions publication 1786 IN013 Instructions for installing a repeater adapter ControlNet Modules in Logix5000 Control Systems User Manual publication CNET UMO001 Describes how your Logix5000 controller communicates with different devices on the ControlNet network ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions publication 1786 IN017 Installation instructions for a tap with an IP67 rating ControlNet Fiber Media Planning and Installation Guide publication CNET IN001 Describes the media that comprises a fiber cable system If you need more information on these products contact your local Rockwell Automation distributor or sales office The documentation is available at http www rockwellautomation com literature Preface Notes 8 Publication CNET INO02B EN P June 2010 Chapter 1 Introduction To Generic Cabling System According to AO ISO IEC 24702 ControlNet Cable System Overview The ControlNet cable system gives you the flexibility to design a communication network for your particular application This chapter provides an overview of the parts comprising the network so you have a better understanding of how to configure your applicati
16. 36 trunk cable section 22 universal mounting bracket mounting dimensions 66 wiring guidelines 35 ControlNet Coax Toolkit crimp tool 56 knife 54 strip gauge 55 strip tool 52 changing the memory blade holder 71 crimp tool 56 F FEP cable 22 44 52 71 ferrite beads 37 117 Index 78 installing cable connectors stripping the cable 54 isolated bulkhead connector 41 link 15 definition 10 planning 40 media redundant 31 memory blade holder 52 mounting dimensions tap 65 universal mounting bracket 66 NAP connecting devices to nodes 20 NetLinx Media Checker 59 network access cable 20 network access port See NAP node 11 0 ohmmeter 59 P programming terminal connecting through NAP 62 ways to connect to a ControlNet link 20 PVC cable 22 44 52 71 redundant media 31 repeater 14 25 configure link with 26 connecting to a ControlNet link 63 determine if you need 25 European Union directive compliance 48 installed in parallel 27 installed in series 26 installed in series and parallel 28 repeater configuration installed in parallel 27 installed in series 26 repeater configurations installed in series and parallel 28 RG 6 cable 22 44 S segment planning 40 terminating 60 strip tool adjusting the cutting blades 50 changing the memory blade holder 71 surge suppression 37 T tap 11 41 determine number needed 18 mounting 45 to a universal mounting bracket 46 using the body holes 4
17. 8 mounting dimensions 65 tap description 10 terminating resistor 25 description 10 determine how many 25 testing for electrical shorts and continuity 59 trunk cable 12 bend radius 44 installing 44 pull strength 44 section lengths 22 terminating 60 testing for shorts and continuity 59 wiring external to enclosures 36 44 wiring inside enclosures 36 44 U universal mounting bracket mounting dimensions 66 W wiring external to enclosures 36 44 guidelines 35 inside enclosures 36 44 Publication CNET INO02B EN P June 2010 Rockwell Automation Support Rockwell Automation provides technical information on the Web to assist you in using its products At http www rockwellautomation com support you can find technical manuals a knowledge base of FAQs technical and application notes sample code and links to software service packs and a MySupport feature that you can customize to make the best use of these tools For an additional level of technical phone support for installation configuration and troubleshooting we offer TechConnect support programs For more information contact your local distributor or Rockwell Automation representative or visit http wwwrockwellautomation com support Installation Assistance If you experience an anomoly within the first 24 hours of installation review the information that is contained in this manual You can contact Customer Support for initial help in getting your product
18. 86 BNCP barrel to connect the taps together e Consider trunk routing cable bend radius and device location when locating and mounting the tap The bend radius is 1 5 in for all fixed tap drop cables and 3 in for drop cables pulled through conduit e Be sure the location where you are going to mount a tap does not cause any cable bend radii to exceed the limits listed on page 44 e Do not mount a tap in a position that routes the drop cable over any AC power terminals on nearby modules ATTENTION Do not allow any metal portions of the tap connectors or cable shields to contact any conductive surfaces This contact could cause noise on the ControlNet network Mounting the Taps You can mount your ControlNet taps Y tap and T tap in several ways e Use a universal mounting bracket and then mount the tap and bracket as an assembly e Use the body holes in the tap to mount with screws and flat washers or a tie wrap See Appendix A for universal mounting bracket and tap TIP T l mounting dimensions Publication CNET IN002B EN P June 2010 45 Chapter3 Install a ControlNet Coax Media System Install a Tap Using a Universal Mounting Bracket Follow these instructions for installing a tap with a universal mounting bracket 1 Align the universal mounting bracket with the mounting holes on the tap 2 Using only the screws provided with the tap as they are the proper length and head style follow one of the example
19. ControlNet Coax Media Planning AB _ and Installation Guide Allen Bradley Catalog Number 1786 series Installation Instructions we Rockwell Allen Bradley Rockwell Software Automation Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment Safety Guidelines for the Application Installation and Maintenance of Solid State Controls publication SGI 1 1 available from your local Rockwell Automation sales office or online at http www rockwellautomation com literature describes some important differences between solid state equipment and hard wired electromechanical devices Because of this difference and also because of the wide variety of uses for solid state equipment all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable In no event will Rockwell Automation Inc be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment The examples and diagrams in this manual are included solely for illustrative purposes Because of the many variables and requirements associated with any particular installation Rockwell Automation Inc cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Rockwell Automation Inc with respect to use of inf
20. Information Publication CNET INO02B EN P June 2010 Summary of Changes This release of this document contains updated information and illustrations New information is marked by change bars in the side column as shown to the right See the table for the section that contains the information Section Changes Chapter 1 Updated illustrations that show how components configure a cable system Chapter 2 Equation for determining a segment with an attenuation value Chapter 2 Repeaters are shown in different topologies such as series and parallel Chapter 2 Considerations for choosing the correct tap connections Chapter 3 Instructions for mounting a tap assembly to a DIN rail or another surface with a transition plate Glossary Definitions of terms used in this manual Summary of Changes Notes 4 Publication CNET INO02B EN P June 2010 Preface ControlNet Cable System Overview Plan a ControlNet Coax Media System Install a ControlNet Coax Media System Publication CNET IN002B EN P June 2010 Table of Contents TREO CMO joy yi Fh 6 ANG rte MARNE LR aetna awed 7 Who Should Use This Manual fs ins monitor T Additional Resoureesas tc c0cb roa oe oie walt eae haa he 7 Chapter 1 ASC HO sesse mn ete een Se one Ry ES TE Er 9 Basic Cable Merminolooy ins t ding ed tie eae Caw eee ae ee 40 10 Elements Comprising the Coax Media System 11 Chapter 2 DOAN MOM isn SSSR et haz arh od
21. Net Coax Media System Chapter 3 4 Lock the cable into place by moving the chamber gauge ting forward until it meets the cable with slight resistance noting that the gauge moves two rollers toward the cable and regulates the depth of the cut clicks as it moves from one gauge to the next 5 Holding the cable in one hand place the index finger of your other hand inside the chamber gauge ring and turn the strip tool 360 degrees around the cable i S Sa 20074 6 Turn four or five full rotations until the strip tool glides easily around the cable IMPORTANT On your last repetition of steps 5 and 6 apply sufficient pressure on the chamber gauge ring to make sure the ring has reached the last stage The chamber gauge should read stop for the last repetition 7 Repeat steps 5 and 6 moving the chamber gauge ring forward one notch for each time you repeat the steps until you reach the last notch noting that each time you move the chamber gauge ring forward a notch the strip tool makes a deeper cut into the cable 8 After you move the chamber gauge ring to the last position and turn the strip tool the final time complete these steps a Move the chamber gauge ring backward to release the strip tool and remove it from the cable b If you are installing IP67 connectors slide the heat shrink tubing over the cable c Slip the crimp ferrule onto the cable pushing it back to the sheath area of the cable to kee
22. acts Push button or selector switches are examples of hard contacts These wiring guidelines assume you guard your system against the effects of transient EMI by using surge suppressors on these devices to suppress transient EMI at its source Inductive loads switched by solid state output devices alone do not require surge suppression However inductive loads of AC output modules that are in series or parallel with hard contacts require surge suppression to protect the module output circuits as well as to suppress transient EMI Ferrite Beads Ferrite beads provide additional suppression of EMI Each tap has three beads integral to the tap drop cable In rare instances where EMI is extremely high it may be necessary to install additional ferrite beads on the trunk cable When necessary secure the ferrite beads with heat shrink tubing or tie wraps When using tie wraps be careful not to deform or crush the coax cable Do not loop the coax cable through the ferrite bead as this will exceed the minimum bend radius of the cable and cause permanent damage to the cable Publication CNET INO02B EN P June 2010 37 Chapter2 Plan a ControlNet Coax Media System Plan the Tap Connections 38 After you mount your taps you need to connect the taps Choose the tap connection procedure that best suits your installation requirements Make sure that taps and bartels are well aligned and DIN rail clips can freely slide over the rail Yo
23. allic wireway or Route your cable at least From noise sources of this strength conduit Yes 0 08 m 3 in Category 1 conductors of less than 20A 0 15 m 6 in AC power lines of 20A or more up to 100 KVA 0 3 m 12 in AC power lines greater than 100 KVA No 0 15 m 6 in Category 1 conductors of less than 20A 0 3 m 12 in AC power lines of 20A or more up to 100 KVA 0 6 m 24 in AC power lines greater than 100 KVA Wiring Internal to Enclosures Cable sections that run inside protective equipment enclosures are relatively short As with wiring external to enclosures you should maintain maximum separation between your ControlNet cable and Category 1 conductors When you are running cable inside an enclosure route conductors external to all raceways in the same enclosure or in a raceway separate from Category 1 conductors Cable Routing Distance Wiring Internal to Enclosures Route your cable at least this distance From noise sources of this strength 0 08 m 3 in Category 1 conductors of less than 20 A 0 15 m 6 in AC power lines of 20 A or more up to 100 KVA 0 6 m 24 in AC power lines greater than 100 KVA 36 Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Surge Suppression Transient electromagnetic interference EMI can be generated whenever inductive loads such as relays solenoids motor starters of motors ate operated by hard cont
24. ansmitted from one station and replayed through each subsequent station in the network Signal can travel in either direction of the ring so it creates network redundancy if the ring breaks in one place the nodes can still communicate Components connected in series are connected along a single path so the same current flows through all of the components The event or electrical quantity that conveys information from one point to another The process of absorbing and clipping voltage transients on an incoming AC line or control circuit MOVs Metal Oxide Varistors and specially designed R C networks are usually used to accomplish this A connection to a trunk cable The tap allows part of the signal on the trunk to be passed to a station and the signal transmitted by the station to be passed to the trunk A device that terminates an unused tap A 75 Qresistor ControlNet mounted in a BNC plug to absorb electrical energy of the signal at the end of the cable to prevent reflections Ethernet uses a 50 Q resistor There also are TNC terminating resistors The way a network is physically structured A Universal Serial Bus USB establishes communication between device and a host controller 75 Glossary Notes 76 Publication CNET INO02B EN P June 2010 Numerics 1786 TCAP 18 A application considerations 35 barrel connector 4 basic configuration 9 bend radius 18 35 37 38 39 40 44 45 60 BNC cable connector 31
25. ation refers to the worst case signal delay between any two nodes on a network You need to figure out the worst case scenario based on distances and the number of repeaters through which the signal has to travel Network delays include the delays through coax and fiber media coax repeaters fiber repeater adapters and fiber modules In order for a network to operate the sum of the network s delays must be equal to or less than the maximum propagation delay of 121 us The total network allowable delay each way is 121 us Listed below are delay values for ControlNet media ControlNet Media Items Delay Value 1786 RPCD 100 ns 1786 RPA 901 ns 1786 RPFS 94 ns 1786 RPFRL 100 ns 1786 RPFRXL 100 ns 1786 RPFM 153 ns 62 5 125 Micron fiber 5 01 ns meter 200 Micron fiber 5 01 ns meter Coax cable 4 17 ns meter 9 125 Micron fiber 5 01 ns meter For more information see Chapter 2 in the ControlNet Fiber Media Planning and Installation Guide publication CNET INO01 Publication CNET INO02B EN P June 2010 Choose Connectors Decide Whether to Use Redundant Media Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 There are BNC TNC and FLEX Ex connectors and adapters available to meet your system requirements For descriptions and illustrations of these components see the ControlNet Media System Components List publication AG PA002 IMPORTANT If you are i
26. ber of taps 48 with 111 m 365 2 ft of RG6F high flex trunk cable Maximum trunk cable length of standard RG 6 trunk cable 1000 m 3280 ft with two taps Maximum trunk cable length of high flex RG6F trunk cable 443 m 1455 ft with two taps 75 Q terminating resistors are required on both ends of each segment One tap with an unconnected drop cable may be installed for maintenance purposes Use dummy loads catalog number 1786 TCAP for all other unconnected drop cables Use BNC bullet connectors at future tap locations Do not mix redundant and non redundant nodes Avoid high noise environments when routing cables see the MICE concept in IEC 61918 Link Planning Maximum is 99 nodes excluding repeaters Repeaters require a tap but are not counted as nodes they are included in the number of devices allowed per segment 48 Repeaters may be installed at any tap location along a segment Only one path can be between any two points on a link The configuration of both sides of a redundant segment must be the same 40 Publication CNET INO02B EN P June 2010 Media Catalog Numbers and Quantities Plan a ControlNet Coax Media System Chapter 2 Item Cat No Guidelines Quantity Needed Tap See the You need a tap for each connection to the trunk
27. ce purposes The maintenance tap may be un terminated all other taps must either be connected to a node or to a tap dummy load catalog number 1786 TCAP All taps installed in a segment must not exceed the maximum allowable segment length for the number of installed taps as detailed on page 23 IMPORTANT A disconnected drop cable can cause noise on the network Because of this a 1786 TCAP is recommended at all unconnected drop cables The tap dummy load matches the impedance of an operating device to limit noise entering the system through an unconnected tap This component is different from a trunk cable terminating resistor In addition a disconnected trunk terminating resistor can have unpredictable effects to the network including the inability to communicate due to reflections Each segment must be terminated with a 1786 XT unit at each end of the segment TIP You may want to use a BNC bullet connector in place of a tap if you plan to install additional nodes in the future The bend radius is 1 5 in for all fixed tap drop cables The illustration below shows available tap kits The IP67 T tap includes a drop cable that is removable from the tap body Available Tap Kits Straight T tap Straight Y tap Right angle T tap Right angle Y tap IP67 T tap 20094 M Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Tap Kit Contents
28. cut Publication CNET IN002B EN P June 2010 51 Chapter3 Install a ControlNet Coax Media System Strip the Cable Follow these steps to strip the cable Check the outer braid of cable for cut or scored braid wire after stripping the cable If the braid is damaged strip the cable again If needed adjust the appropriate striper blade by backing the set screw out 1 8 of a turn Do not crimp the BNC to a damaged braid This type of mistake accounts for most of the connectivity problems that occur Precise clean connections will reduce network errors When cutting cable sections make them long enough to route from one tap to the next with sufficient length so that the bend radius is not less than e 76 2 mm 3 in for wiring external to enclosures e 38 1 mm 1 5 in for wiring inside enclosures 1 Verify that you have the proper memory blade holder installed for the type of cable you are using catalog number PVC CL2 or FEP CL2P If you need to change the memory blade holder see Appendix B B Cable Catalog Number CE 20165 2 Straighten out the end of the cable 3 Insert the cable into the cable strip tool s cutting chamber so that approximately 25 4 mm 1 in of extra cable extends beyond the edge of the tool 25 4 mm 1 in 52 Publication CNET INO02B EN P June 2010 Install a Control
29. e blades should not bend shift or penetrate the calibration tool 6 Retract the handle of the cable strip tool 7 Remove the calibration tool from the cable strip tool 8 When you are finished the blade should make a cut of the following Item dimensions in your cable 3 7mm 40mm 8 3mm 0 15in 0 16 in 0 33in A SY PVC CL2 1 2 3 30030 m Description First Cut All four shield layers braid tape braid tape The first cut should cut the outer sheath without cutting the outer wire braid If the braid is frayed scored or cut by the blade adjust the blade outward slightly to eliminate the fraying Second Cut White insulation or first tape The second cut should cut the sheath three outer shields and possibly the inner tape shield The insulation can be scored slightly but should not have a deep cut Third Cut Center conductor The third cut should cut all layers of the cable down to the center conductor This cut should not score the center conductor If the blade leaves a mark on the conductor adjust the blade slightly so to eliminate marking the conductor M f any adjustments are made during the cable stripping procedure to meet items 1 2 or 3 cut the end of the cable off and start over IMPORTANT The first and second cut adjustments need to be precise Adjustments as small as 1 12 to 1 8 of a turn can make the difference between a perfect and an imperfect
30. e nn 60 Cennecr Devices n earan E Se A O EET 61 5 Table of Contents Mounting Dimensions Maintain the Cable Strip Tool Glossary Index Appendix A INGOUUCHON s sepi Cth Grae aia de E en BENEA E 65 ADS DD te ava ees NS CS ee me Ne 65 Universal Mounting Bracket sise nine ae 66 Transiton Platero ee nn ne ne A nee ye ey 67 Appendix B OU LO ss de se Los Res eme ORAE de 69 Reverse or Replace the Cutting Blades 69 Change the Memory Blade Holdet 0 ns ae nine 71 Publication CNET INO02B EN P June 2010 Introduction Who Should Use This Manual Additional Resources Publication CNET IN002B EN P June 2010 Preface This manual describes the required components of a ControlNet coax media system The information is useful in determining your system and for installing the required components You must have an understanding of the fundamentals of electronics and electrical codes to use the procedures in this document If you need additional information refer to the related documentation listed below These documents provide additional information related to products and documentation Resource Industrial Automation Wiring and Grounding Guidelines publication 1770 4 1 Description General guidelines for wiring an Allen Bradley automation system ControlNet Media System Components List publication AG PA002 Category numbers and specifications for the components that comprise
31. e the dummy load to plug into drop cables that are One for every drop cable that is quantity of 5 not attached to a node not attached to a node Coax tool kit 1786 CTK Use the tool kit to create your create your trunk cable One to your specifications 1 You need to double your quantities when ordering components for a redundant cable system Publication CNET INO02B EN P June 2010 41 Chapter2 Plan a ControlNet Coax Media System Notes 42 Publication CNET INO02B EN P June 2010 Chapter 3 Introduction Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System This section provides instructions for installing your ControlNet coax media system You should already have a plan which is detailed in Chapter 2 IMPORTANT To keep the integrity of your ControlNet network connection use only Rockwell Automation cables and connectors as well as the ControlNet coax toolkit catalog number 1786 CTK The cables connectors and toolkit work together to provide the most reliable connection The table is a quick reference tool for locating the components that you want to install Topic Page Install the Trunk Cable 44 Plan the Taps Installation 45 Install a Repeater 48 Install Cable Connectors 48 Obtain the Toolkit 49 Calibrate the Cutting Blades 50 Strip the Cable 52 Attach the Connectors to the Cable 55 Test for Electrical Shorts and Continuit
32. el 14 Core F Cyberport 3 100 Cyberport Road Hong Kong Tel 852 2887 4788 Fax 852 2508 1846 Publication CNET INO02B EN P June 2010 PN 72106 Supersedes Publication CNET INO02A EN P December 2001 Copyright 2010 Rockwell Automation Inc All rights reserved Printed in the U S A
33. el any node is listening to some nodes could be listening on channel A and some could be listening on channel B When planning a redundant media system route the two trunk cables A and B such that damage to one cable will not damage the other cable to reduce the chance of both cables being damaged at the same time Also be certain that both cables routing is similar in distance and duplicate nodes for proper redundant cable operation IMPORTANT Redundant cabling can tolerate one or more faults on a single channel If a fault were to occur on both channels the network operation would be unpredictable 31 Chapter 2 Plan a ControlNet Coax Media System 32 Redundant Media Example 5 1788 RPA A 766 RPCD 5 CH1 CH 1788 RPA 788 RPCD ca CHI gCH2 Oo H 20135 M Item Description 1 Segment trunk sections and taps between terminating resistors Trunk cable A Terminating resistor Trunk cable B Repeater moj o A Wy N Node supporting redundant media Each node on a redundant cable link must support redundant coax connections and be connected to both trunk cables at all times Any nodes connected to only one side of a redundant cable link will result in media errors on the unconnected trunk cable A node supporting redundant trunk cable connections will function even
34. ength of trunk cable sections make sure you measure the actual cable path as it is routed in your network Consider vertical dimensions as well as horizontal dimensions You should always calculate the three dimensional routing path distance when determining cable lengths If your cable has foot or meter markers as part of the cable legend the length used may be determined by reading the legends at both ends of the section Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Tap Trunk cable Section and Terminating Resistors 2 n9 3 3 eng 2 30094 m Item Description 1 Tap 2 Terminating resistors 3 Trunk cable section Select the shortest path for routing the cable to minimize the amount of cable you need The specific details of planning such a cable route depends upon the needs of your network and environments There is no minimum trunk cable section length limit The maximum allowable total length of a segment is 1000 m 3280 ft with two taps connected Each additional tap decreases the maximum length of the segment by 16 3 m 53 4 ft The maximum number of taps allowed on a segment is 48 with a maximum length of 250 m 820 ft Segment Length and Number of Taps 1000 8280 Max allowable segment length 750
35. for a signal A hardwate assembly that houses devices such as I O modules adapter chassis processor modules and power supplies Coaxial cable A transmission line in which one conductor is centered inside and isolated from a metal tube that serves as the second conductor Control of plant floor devices such as I O chassis robots and other intelligent devices A unit such as a programmable controller or relay panel that controls machine or process elements An open control network that uses the producer consumer model to combine the functionality of an I O network and peer to peer network while providing high speed performance for both functions A nonconductor of electricity A switching circuit that has only two states on and off Connects a device to a tap Typically drop cables are shorter in length than compated to the trunk 73 Glossary environment FEP cable ferrule fiber cable IEC IEEE 1 0 link MICE modular NAP network node parallel 14 In a systems context the environment is anything that is not part of the system itself Knowledge about the environment is important because of the effect it can have on the system or because of possible interactions between the system and the environment Fluorinated ethylene propylene cable is high voltage wire that offers dielectric strength Tip or termination of a fiber optic bundle Cable that uses light rather than electric
36. gh a NAP port Using a commercially available Ethernet cable could result in possible network failures The 1786 CP cable has two RJ 45 8 pin connectors When you connect a personal computer through this cable it is counted as a node and must have a unique address e The USB port of a 1756 CN2 R series B communication module e The USB to ControlNet cable catalog number 1784 U2CN that lets you connect a notebook or laptop computer to the network This product replaces the 1784 PCC communication card for computers that do not have PCMCIA slots e A ControlNet communication interface card catalog numbers 1784 PCIC 1784 PCICS or ControlNet universal scanner catalog number 1784 PKTCS 20 Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Example Node Connections to a Personal Computer 1756 CN2R B 1784 PCIC 1784 PCICS 1784 PKTCS Cr a Pia ae ni Redundant Media ae Optional 1770 KFC15 Serial Connection 1784 U2CN ool USB Connection 30013 M The 1770 KFC15 communication interface module has a RS 232 connection for standalone devices such as modems Publication CNET INO02B EN P June 2010 21 Chap
37. ght When using screws and flat washers any suitable hardware can be used provided the diameter is less than 4 mm 0 15 in The illustration on the left shows a tie wrap threaded through the body holes Do not over tighten the screws Over tightening the screws can damage the tap The applied torque should be 0 2 0 4 Ne m 1 2 Ibe ft To install a repeater adapter see the ControlNet Modular Repeater Adapter Installation Instructions publication 1786 IN013 See the following instructions to attach cable connectors to the ends of your trunk cable sections e Obtain the Toolkit e Calibrate the Cutting Blades e Strip the Cable e Attach the Connectors to the Cable e Test for Electrical Shorts and Continuity Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 Obtain the Toolkit To install the cable connectors we recommend that you use the tools in the ControlNet coax toolkit catalog number 1786 CTK The tools include those in the illustration Item Description Item Description 1 Cable strip tool with two blade 5 Calibration flare holder cassettes one for PVC and one for FEP 2 Terminating resistors and 6 Knife extra connectors 3 Memory blade cartridges that 7 Crimp tool contain two sets of memory blades 4 Memory blade holder 8 Wire cutters If you are installing IP67 connectors you need a local purchase heat gun as i
38. gments together and boosts the signal section being a length of cable between passing from one segment to the other any two taps Each node is connected to the trunk cable with a tap Bridge A device that provides a communication Terminating A 75 Qresistor mounted in a BNC plug to 2 connection between networks resistor absorb electrical energy of the signal at the end of the cable to prevent reflections Each end of a segment must be terminated Node or Any physical device connecting to the Passive tap The connection between any device and device ControlNet cable system that requires a with drop the cable system The length of the drop network address to function on the na cable cable is 1 m 3 28 ft network The illustrations throughout this section show how each of the components identified in the above table forms an efficient deterministic and repeatable communication network ec CR ControlNet Coax Media Cable System Link Trunk Cable with BNC TNC Connectors Network Trunk Line Drop Line 44984 10 Publication CNET INO02B EN P June 2010 ControlNet Cable System Overview Chapter 1 Elements Comprising the The ControlNet coax media system consists of components such as the trunk Coax Me dia System drop cables taps cable connectors terminating resistors nodes and repeaters to create segments links and bridges for network communication For information on p
39. he center pin 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 in place use the crimp tool to crimp the pin into place noting the following guidelines e The smaller hexagonal crimping notch is for crimping the center pin onto the center conductor e Check for any braid strands that could cause a short to the center conductor Smaller Crimping Notch 4 Slide the ControlNet connector body onto the cable noting the illustration that shows the braid and tape shields and connector base Connector Se Braid and Tape of Connector Base 20077 5 Slide the crimp ferrule over the three outer shields and connector base until it meets the shoulder on the connector a a 20077e 6 Using the crimp tool crimp the ferrule The large hexagon opening is used for this crimp 56 Publication CNET INO02B EN P June 2010 Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 7 Position the crimp tool on the ferrule as close as possible to the connector base and ferrule meeting line 45001 Crimp Ferrule in Larger Crimping Notch 8 Press the tool tightly around the ferrule until the crimp tool allows release noting that the larger hexagonal crimping notch is for crimping the ferrule that holds the connector to the cable
40. ie Leen he Peu de 17 Determine the Number of Taps You N d nsxsss2 ses awa 18 Choose the Connection for Programming Devices 20 Choose the Cable IL pes sn tetas RTS SES 22 Determine Trunk Cable Section Lengths 22 Decide the Number of Terminating Resistors 25 Determine Repeater Requirements 2 ten rererere 25 Determine Propagation Deby hice peer ee baad oh 30 Choose C onneciors asie tases oo deserted oa ee baw ees 31 Decide Whether to Use Redundant Media 31 Decide Whether You Need IP67 Media cs isis hee eme 34 Follow Application and Installation Guidelines 35 Plan the Tap Connections din ed wk ae ee Re ee da 38 Review the Plan Order Components ss names 40 Chapter 3 Iytroduc ot de pe dw aan tne ehaeds garnet ay tees OSes eee ten 43 Instalithe Tronk Cable nisce de ae esate poe Pea ahd te arte 44 Plan the Taps Saone ph Lis Gite Tieden ae Oia ened 45 This AI Repeater A rene Nana os bens er na 48 Install Cable Connectors 9 cna hin ied as nt Daa Dee 48 Obiain the TOME starts auth A a ent ols ales 49 Calibrate the Cutting Blades css aug2s cade bead he ee aaa wees 50 Strip the Cable Hoc aa ous ras ens ao Eo Drea ENE 52 Attach the Connectors to the Gables ous 2 dais ia oo bade ak 55 Test for Electrical Shorts and Continuity 59 Connect Cable SECHE sadn bra oer nl nays 20 fuer nse ote 60 Terminate S RIE san E E E E O Cd n
41. if trunk cable A is connected to the B connector on the node and vice versa This makes cable fault indications on the hardware or in software difficult to interpret and makes locating a bad cable segment very difficult so be certain to properly label the trunk and taps with the provided channel A and channel B labels Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Follow these installation guidelines e Install the cable system so that the trunk cables at any physical node location can be easily identified and labeled with the appropriate icon or letter Each redundant ControlNet node is labeled so you can connect it to the corresponding trunk cable e Avoid connecting a single node s redundant trunk cable connections on different segments this causes erratic operation e Install the redundant cable such that the path on both channels is similar in length node order and nodes connected Follow the charts for series A repeaters for the total difference in length between the two trunk cables of a redundant cable link which decreases as the number of repeaters increases If you are using series B repeaters you ate allowed to have a total skew of 1 6 us between channels Allowable Cable Length Difference vs Repeaters in Series for Coax Media 6 e Worst Case s 5 m Typical Case 2 y 4 5 34 o 2 ao 2 a 14 0 T T T T T T
42. ity to transmit data therefore immune to electrical noise and can span larger distances than copper coax cable International Electrotechnical Commission IEC 61918 defines standards for the installation of coax and fiber media Acronym for Institute of Electrical and Electronic Engineers which specifies a family of standards for data communications over local and metropolitan area networks Inputs and outputs See data link An acronym that stands for Mechanical Ingress Climatic Chemical and Electromagnetic MICE tables define environmental conditions for industrial facilities to determine the levels of harshness for the implementation of components The four primary elements are mechanical characteristics M ingress protection I climatic chemical C electromagnetic E Being made up of smaller units or modules each of which can be developed tested and finished independently before being combined with the others in the modular unit Modularity provides the ability to be reconfigured by easily replacing one module type with another Modularity also provides the ability to correct a failure by easily replacing a faulted module with a known good module Refers to Network Access Port a phone jack style connector on a device that allows temporary network access A series of stations nodes connecting multiple devices together for the purposes of exchanging information A network can be made up of a single link or multiple link
43. lNet Standard and High flex Coax Cable Installation Instructions publication 1786 IN009 Using the formula described above if your segment requires three taps using 1786 RGG6F cable which has an attenuation of 13 5 dB the maximum segment length is 20 29 db 3 32 db 13 5 db 304 19 33 db 13 5 db 304 435 2 m 1427 8 ft The total trunk cable length or number of taps can be increased by installing repeaters on the segment This creates another segment Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 Decide the Number of You must use 75 Q terminating resistors catalog number 1786 XT at the end ff Terminating Resistors of each segment to absorb electrical energy and prevent reflections of signals Terminating Resistor 1786 XT LI After you have determined how many segments will be in your network multiply this number by two to figure out how many terminating resistors you will need for your network Determine Repeater You need to install repeaters if your system requires more than Requirements 48 taps per segment or a longer trunk cable than the specifications allow The following graph is based on the standard ControlNet cable If you are using other cables such as high flex this graph does not apply g Repeater 1000 3280 E 3280 i Required 2 750 2460 s 500 1640 Repeater Not S 250 820 Required A r m 32 48 30016 m Number of
44. nclosure for electrical equipment Rugged IP67 equipment is typically priced higher so you must plan accordingly to stay within budget See page 34 for more information IMPORTANT The ControlNet cable system is a ground isolated coaxial network Proper selection of cable connectors accessories and installation techniques is necessary to make sure it is not accidentally grounded The table outlines what you should consider when designing your system Topic Page Determine the Number of Taps You Need 18 Choose the Connection for Programming Devices 20 Choose the Cable Type 22 Determine Trunk Cable Section Lengths 22 Decide the Number of Terminating Resistors 25 Determine Repeater Requirements 25 Determine Propagation Delay 30 Choose Connectors 31 Decide Whether to Use Redundant Media 31 Decide Whether You Need IP67 Media 34 Follow Application and Installation Guidelines 35 Plan the Tap Connections 38 Review the Plan Order Components 40 17 Chapter2 Plan a ControlNet Coax Media System Determine the Number of Taps You Need The number of taps you need depends on the number of nodes you want to connect to the network You need a tap for each node and repeater on a segment If you plan to add nodes at a later date you should order and install the cable and taps for these additional nodes when you install the initial network An additional tap may be installed on a segment for maintenan
45. nstalling a bullet connector for future tap installations count the bullet as one of the tap allotments on your segment and decrease the maximum allowable cable length by 16 3 m 53 4 ft This helps you avoid reconfiguring your network when you install the tap You can run a second trunk cable between your ControlNet nodes for cable redundancy Media redundancy is achieved by installing devices with redundant ports and installing a second cabling system In the event of a cable failure or degraded cabling the redundant network is used by the system Trunk cables on a redundant cable link are defined by the segment number and the redundant trunk cable letter Actual ControlNet products are labeled with these icons 7 4 the shaded icon representing redundant media In the illustration on page 32 the nodes support redundant media and the redundant cable trunk cable is trunk cable B 7 When configured for redundant cabling all nodes will simultaneously transmit and teceive on both channel A and channel B There is no distinction on the network between packets on channel A and channel B Each node will independently decide which channel A or B it will listen to this is based on historical counters that ate internal to each node There is no overall network parameter that says which channel to use each node decides on its own At any time whether a network has valid or invalid redundant cabling there can be a mix of which chann
46. ntinuity 5 If the resistance reading indicates a short exists use your wire cutters to cut off the connector install a new connector and begin testing again otherwise proceed to the next section IMPORTANT Replace the trunk cable section if problems persist with the cable after completing these tests Publication CNET INO02B EN P June 2010 59 Chapter3 Install a ControlNet Coax Media System Connect Cable Sections Connect the cable sections to the tap s BNC connectors 20078 Terminate Segments The taps on the ends of the segment have only one cable connector attached to them This leaves an open or un terminated end on the segment Signals transmitted along the cable reflect off these un terminated ends and interfere with transmission To eliminate signal reflections from the ends of the segment you must attach a 75 Q terminating resistor to the first and last taps on the segment The terms first and last refer to the physical location of the node along the trunk cable 1 Connect one end of the trunk cable section to one of the tap s BNC connectors as shown in the above illustration 2 Install a 75 Q terminating resistor onto the tap s other BNC connector 20079 3 Repeat steps 1 and 2 at the other end of the segment TIP The bend radius is 1 5 in for all fixed tap drop cables 60 Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 Connect Devices
47. ommunication cables ow e Low voltage DC power lines Communication cables to connect between system components within the same enclosure General Wiring Guidelines Follow these guidelines for wiring all ControlNet cables e If cable must cross power feed lines it should do so at right angles Route at least 1 5 m 5 ft from high voltage enclosures or sources of rf microwave radiation e The bend radius for all fixed tap drop cables is 1 5 in e If the conductor is in a metal wireway or conduit each section of the witeway ot conduit must be bonded to each adjacent section so that it has electrical continuity along its entire length and must be bonded to the enclosure at the entry point See the table for more information on general wiring guidelines Publication Pub No Industrial Automation Wiring and Grounding Guidelines 1770 4 1 System Design for Control of Electrical Noise GMC RMO01 Publication CNET INO02B EN P June 2010 35 Chapter2 Plan a ControlNet Coax Media System Wiring External to Enclosures Cables that run outside protective enclosures can be relatively long To minimize cross talk from nearby cables it is good practice to maintain maximum separation between the ControlNet cable and other potential noise conductors You should route your cable by using these guidelines Cable Routing Distance Wiring External to Enclosures Cable in a contiguous met
48. on We strongly recommend that you spend sufficient time on planning your network installation requirements before assembling any of the hardware The table lists the essential components for a ControlNet coax cable system Topic Page Basic Cable Terminology 10 Elements Comprising the Coax Media System 11 Node 11 Tap 11 Trunk Cable and Connectors 12 Segment 13 Repeater 14 Link 15 Bridge 15 The illustration provides an overview of NetLinx architecture including the ControlNet network that operates in conjunction with international standards HMI 1 0 EtherNet IP PLC Linking Device Linking device ControlNet Coupling Linking Potentially Explosive Area Adaptor HMI 170 PLC Device Coupling Isolation Adaptor Barrier ControlNet IS DeviceNet HMI 1 0 PLC HMI 1 0 PLC Components Must Be IS rated Publication CNET INO02B EN P June 2010 45097 Chapter 1 ControlNet Cable System Overview l Basic Cable Terminology The table defines some of the basic ControlNet network terminology HE Item Term Description Item Term Description Trunk line The trunk cable is the bus or central part Repeater A two port component that connects of a cable system with a trunk cable R se
49. ontrolNet Coax Media System Chapter 2 The illustrations show typical mounting configurations for mounting taps on a DIN rail Typical DIN Rail Mounting Configurations Mount Using Example Requirement Vertical T tap and The minimum bend 1786 TJPR Eea radius of the jumper S f N ff 1786 TJPR jumper is 38 mm 1 5 in Nb ofa dello 45005 Y tap and 1786 TJPR aS ie A A 45006 Horizontal T tap and Taps must be on the transition same DIN rail plate shipped with each Taps must not be T tap 4 bolted down to a cabinet 45004 Publication CNET INO02B EN P June 2010 39 Chapter2 Plan a ControlNet Coax Media System Review the Plan i Now that you are ready to order components use the checklists to make sure that your system plan follows these guidelines Refer to the table on page 41 to Order Components ae gues g page 41 select components IMPORTANT The ControlNet cable is isolated from earth and must be protected from inadvertent ground connections Segment Planning All connections to the trunk cable require a tap Taps can be installed at any location on the trunk cable Tap drop cable length must not be changed Bend radius is 1 5 in Maximum number of taps 48 with 250 m 820 ft of standard RG 6 trunk cable Maximum num
50. or 11 44 mm 3 7 mm 4 0 mm 0 45 in 0 15 in 0 16 in 20076 54 Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 10 Concerning the center conductor note the following guidelines e Be sure the center conductor is 4 0 mm 0 16 in by using the imprint guide on the back of the ControlNet tap or the calibration tool for verification e You should use the FEP CL2P end of the calibration flare tool to verify proper measurement for FEP cable Koo qe e If the center conductor is too long cut off the excess with the wire cutter from the cable kit If the center conductor is too short repeat the entire cable stripping process Check for any braid stranding not cut to the proper length lf one strand comes in contact with the center conductor it could short out the cable If you find any such strands cut them to the correct length Attach the Connectors Do these steps to install standard BNC or IP67 rated TNC connectors to the Cable 1 Push the calibration flare tool onto the cable and with a slight twisting motion with sufficient inward pressure to expand the braid 2 Place the center pin over the center conductor Be sure the center conductor is clean noting that sometimes strands of insulation remain on the center conductot Center Pin 20077b Publication CNET INO02B EN P June 2010 55 Chapter3 Install a ControlNet Coax Media System IMPORTANT Be sure t
51. or with Dust Cap 20093 i 2 Connect the designated tap s straight or right angle connector to the BNC connector on the repeater 3 Remove and save the dust cap on the straight or right angle connector of the designated tap on the second segment segment 2 4 Connect this tap s straight or right angle connector to the BNC connector on the repeater Publication CNET INO02B EN P June 2010 63 Chapter3 Install a ControlNet Coax Media System Notes 64 Publication CNET INO02B EN P June 2010 Appendix A Mounting Dimensions Introduction The illustrations in this appendix provide dimensions to help you with mounting taps universal mounting brackets and repeaters Taps The illustrations show dimensions for BNC connectors These are examples drawings are not to scale IP20 T tap IP20 Y tap 30 23 35 66 1 19 gt lt 1 40 gt gt a gt 15 24 lt f 0 60 25 44 A 4 33 02 1 00 1 30 39 37 31 37 1 55 1 235 D MD ar WY l LD LD C7 LD 20168 20169 Lo Note All dimensions are in mm in Publication CNET INO02B EN P June 2010 65 Appendix A Mounting Dimensions The illustrations show dimensions for a TNC connectot
52. ormation circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Automation Inc is prohibited Throughout this manual when necessary we use notes to make you aware of safety considerations Identifies information about practices or circumstances that can cause an explosion in a hazardous environment which may lead to personal injury or death property damage or economic loss IMPORTANT Identifies information that is critical for successful application and understanding of the product ATTENTION Identifies information about practices or circumstances that can lead to personal injury or death property damage or economic loss Attentions help you identify a hazard avoid a hazard and recognize the consequence SHOCK HAZARD Labels may be on or inside the equipment for example a drive or motor to alert people that dangerous voltage may be present BURN HAZARD Labels may be on or inside the equipment for example a drive or motor to alert people that surfaces may reach dangerous temperatures o A A A A Allen Bradley Rockwell Automation Rockwell Software RSLinx Logix5000 RSLogix5000 RSNetWorx for ControlNet and TechConnect are trademarks of Rockwell Automation Inc Trademarks not belonging to Rockwell Automation are property of their respective companies Introduction New
53. p it out of the way for the moment Crimp Ferrule D Le 418874 d Strip away the appropriate portion of the cable without using the strip tool e Clean the remaining cable parts from the strip chamber after each use Publication CNET INO02B EN P June 2010 53 Chapter3 Install a ControlNet Coax Media System This procedure should appropriately strip the cable exposing these layers of the cable as shown in the illustration e All four shield layers braid or tape braid or tape e White foam dielectric core or first tape if tape bonded e Center conductor Dielectric Braid or Tape Boar Cot Sheath NN Jas Conductor PVC CL2 E D 8 3 mm 3 7 mm 4 0 mm 20076a 0 33 in 0 15in 0 16 in TIP If you do not see the three distinct layers of cable or if the outer braid was scored or cut snip off the exposed end with the wire cutters and repeat the entire cable stripping process It is very important that the outer braid be intact before crimping the connector If stripping problems persist the strip tool may need adjustment Refer to Appendix B for instructions on how to adjust the strip tool 9 If you are terminating plenum FEP cable cut off an additional 3 1 mm approximately 1 8 in of the outer sheath with the knife from the toolkit 3 1 mm 0 12 in Braid or Tape Sheath 7 Dielectric ao Foam Core FEP CL2P RS amp amp SAN Center Conduct
54. qually maintained See page 30 for limits A repeater can be connected to a segment at any tap location For redundant networks the repeaters of each segment must be in the same cable section between taps See page 32 for an example The illustration shows an example of 1786 RPCD repeaters wired in series 1786 RPA eae 1786 RPA 1786 RPCD oo Oo c O 2 31484 M Publication CNET IN002B EN P June 2010 Plan a ControlNet Coax Media System Chapter 2 32041 M Publication CNET INO02B EN P June 2010 Install Repeaters in Parallel When you install repeaters in parallel you create smaller isolated segments that have less signal noise than larger segments You can install a maximum of 48 repeaters the maximum number of taps per 250 m 820 ft segment on any one segment If your link is configured using repeaters in parallel you count one of the repeater taps for one segment and the other repeater tap for the parallel segment that the repeater is connecting to the backbone network IMPORTANT Under no circumstances can delay exceed 121 us each way ina network For more information see page 30 The illustration shows an example of repeaters used in parallel
55. re available from third party vendors Choose the cable type based on the application and or environment where your system is being installed A cable connector catalog number 1786 BNC attaches coax trunk cable sections to a tap s BNC connector Standard BNC connectors twist and lock onto the cable However these connectors are not designed for rugged conditions such as vibration water and so forth Use IP67 media connectors catalog number 1786 TNC that have screw threads for harsh environmental conditions Terminating Tap Tap Tap Terminating Resistor Trunk cable Section Trunk cable Section Resistor 44988 12 Publication CNET INO02B EN P June 2010 ControlNet Cable System Overview Chapter 1 Trunk Line Terminating Resistors A 75 Q terminating resistor must be installed on the tap at each end of a trunk cable section Terminating resistors absorb the electrical energy of the signal at the ends of the cable to prevent reflections which interfere with signals that are being sent Two types of terminating resistors are available depending on the connectors and taps that are being used on a trunk line There is a BNC terminating resistor catalog number 1786 XT and a TNC terminating resistor catalog number 1786 TNCLXT4 KB 1786 XT 1786 TNCLXT4 Segment A segment is a collection of coax trunk cable sections and taps bounded by terminating resistors at each end of the
56. rod and snap the holder into place Publication CNET INO02B EN P June 2010 n AppendixB Maintain the Cable Strip Tool 4 Swing the memory blade holder closed 20069 m 72 Publication CNET INO02B EN P June 2010 analog circuit attenuation bending radius bridge bus bus topology channel chassis coax control network controller ControlNet network dielectric digital circuit drop cable Publication CNET INO02B EN P June 2010 Glossary The following terms and abbreviations are used throughout this manual For definitions of terms not listed here refer to the Allen Bradley Industrial Automation Glossary publication AG 7 1 A circuit in which the signal can vary continuously between specified limits The decrease in magnitude of a signal The total attenuation on a fiber optic cable is a function of the material and the length of the cable The minimum radius to which a cable can be bent without damage An interface between links in a communication network that routes messages from one link to another when a station on one link addresses a message to a station on another link A single path or multiple parallel paths for power or data signals to which several devices may be connected at the same time A link topology in which all stations are connected single path or multiple parallel paths for power or data signals to which several devices may be connected at the same time A path
57. rse or Replace the Follow these steps to reverse or change the cutting blades Cutting Blades 1 Use a screwdriver to lift the memory blade holder and swing it back 20182 m 2 Slide the memory blade cartridge out of the strip tool Publication CNET IN002B EN P June 2010 69 AppendixB Maintain the Cable Strip Tool 3 If you are reversing the memory blade cartridge to use the second set of blades go to step 4 replacing the memory blade cartridge go to step 6 7 V 4 PNY Z 4 ff f TANA TZN Z 5 Align the memory blade cartridge the side with the raised notches to the raised area on the inside of the strip tool and slide the new memory blade cartridge in The blades should be on top as you slide the cartridge in 3003 1a m 70 Publication CNET INO02B EN P June 2010 Maintain the Cable Strip Tool Appendix B 6 Swing the memory blade holder closed 20069 m Change the Memory BI ade You received two memory blade holders with your cable strip tool one is for Holder PVC CL2 cable and the other is for plenum FEP CL2P cable You need to install the appropriate memory blade holder for the type of cable you are stripping PVC cable or FEP cable 1 Lift the latches on the memory blade holder and swing it back 20182 m 2 Snap the memory blade holder off the rod and remove it from the strip tool 20070 m 3 Position the appropriate memory blade holder on the
58. s The connection point at which media access is provided A configuration of two or more two terminal components connected between two points in a circuit with one terminal of each connected to each of the two points The same voltage is applied to each component Publication CNET IN002B EN P June 2010 Glossary physical link protocol PVC cable redundancy reflections repeater ring topology series signal sutge suppression tap tap dummy load terminating resistor topology USB Publication CNET INO02B EN P June 2010 A set of cables and ports that provides a channel of communication between stations A set of conventions governing the format and timing of data between communication devices Polyvinyl cholride cable is a common plastic cable insulation Special additives are available to make PVC cable flame retardant to meet Plenum specifications The duplication of devices for the purpose of enhancing the reliability or continuity of operations The bounce back of signals at the end of the cable A two port component that connects coax cable segments together and amplifies the signal passing from one segment to the other segment There are two types of repeaters amplifying and regenerating An amplifying repeater boosts a signal including noise and retransmits it down the network A regenerating repeater also boosts a signal but without noise A network where signals are tr
59. s below to attach the tap to a universal mounting bracket 20084 M Item Description 1 Universal mounting bracket provided with tap 2 Optional transition plate 3 T tap 4 Dust cap 5 Y tap TIP The T taps ship with two sets of screws machine and course thread self tapping The machine screws always screw into the tap Use only the self tapping screws if you mount the transition plate to the DIN rail bracket 46 Publication CNET INO02B EN P June 2010 Publication CNET INO02B EN P June 2010 31643 M Install a ControlNet Coax Media System Chapter 3 3 Mount the tap and bracket assembly to e a DIN rail Use the universal mounting bracket on specified Allen Bradley mounting rails as shown in the illustration on the left This illustration also shows the optional transition plate other mounting surface Use four screws to attach the universal mounting bracket to another mounting surface as shown in the illustration to the right This illustration also shows the optional transition plate 2 E 44993 Rail Type Cat No A B rail 1492 N1 1492 N22 1492 N44 DIN rail 3 1492 DR1 1492 DR5 1492 DR6 1492 DR7 47 Chapter3 Install a ControlNet Coax Media System Install a Repeater Install Cable Connectors 48 Install a Tap Through the Body Holes Mount the tap to a suitable fixture by threading the screws through the body holes as shown in the illustration on the ri
60. segment The total allowable length of a segment depends upon the number of devices attached to the segment via the taps You cannot have more than 48 active devices and taps on a single coax segment A repeater see page 14 lets you extend the allowable cable distance for additional nodes maximum of 99 on a ControlNet network Segment Trunk Line Drop Line 44987 Publication CNET INO02B EN P June 2010 13 Chapter 1 ControlNet Cable System Overview Repeater When you insert a repeater into the cable system a new segment is created The same restrictions on the number of taps and cable length apply to this new segment as explained on page 13 Segment A Segment B Trunk Line Drop Line 44989 IMPORTANT A repeater counts as a device on a segment but does not require a node address Therefore repeaters do not count against the 99 available node addresses on a ControlNet network ControlNet repeaters are connected to a repeater adapter catalog number 1786 RPA that provides current to the repeaters connects to the coax media and repeats signals from the coax media to the repeater modules You can attach up to four repeater modules to one repeater adapter There are two channels on each repeater module Media modules can be mixed on a single starter module to create mixed media repeaters that is coax and fiber Because you cannot attach nodes directly to fiber cables fiber repeaters are
61. t is not supplied in the kit Publication CNET IN002B EN P June 2010 49 Chapter3 Install a ControlNet Coax Media System Calibrate the Cutting Follow these procedure to calibrate your cable strip tool to cut FEP Blades ot PVC cable Be sure to perform the calibration procedure the first time you use the tool and every time you change the blade for both memory cartridges Due to slight differences between coax cables calibration should be performed when changing e part numbers e one cable manufacturer to another manufacturer 1 Turn the three screws outward to back the blades out to prevent the calibration tool from bottoming out 2 Place the calibration tool into the cable strip tool with the narrow end installed and facing forward for FEP cable and use the wider end for PVC cable 3 Turn the adjusting screw clockwise to increase the cut depth e counterclockwise to decrease the cut depth Calibration Tool Adjusting Screw 20088 M 4 Tighten the chamber gauge ring so that the calibration tool is locked in place closing all the way to the chamber gauge stop When aligned properly the grooves of the calibration tool should align with the blades 50 Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 5 Adjust the screws of the memory clip so that the blades just touch the calibration tool Do not over tighten the screws of the cable strip tool Th
62. ter2 Plan a ControlNet Coax Media System Choose the Cable Type Determine Trunk Cable Section Lengths 22 There are several types of RG 6 quad shield cable that are appropriate for your installation Choose the appropriate cable with environmental factors associated with your application and installation site in mind You can use the Mechanical Ingress Climatic Chemical and Electromagnetic MICE concept in the IEC 61918 standard to help determine your environmental conditions You should install all wiring for your ControlNet cable system in accordance with the regulations contained in the National Electric Code or applicable country codes state codes and applicable municipal codes For this application Use this cable type Industrial applications Standard PVC CM CL2 Heavy industrial applications Lay on armoured and interlocking armour High and low temperature applications Plenum FEP CMP CL2P corrosive areas harsh chemicals fire safety Festooning or flexing applications High flex Moisture resistant applications direct Flood burial burial with flooding compound fungus resistant See the ControlNet Media System Components List publication AG PA002 for information on part numbers A segment is comprised of several sections of coax trunk cable taps and two terminating resistors See page 23 to determine the number of devices and allowable cable length IMPORTANT When determining the cable l
63. u can connect Y taps and T taps by using a 1786 TJPR plug to plug jumper with a 38 mm 1 5 in bend radius You can connect T taps installed on one DIN rail by using barrel plug to plug connectors T taps connected with 1786 BNCP barrel connectors require horizontal mounting of the taps on one DIN rail by using a tap transition plate IMPORTANT When connecting taps follow these considerations for proper installation e While taps are electrically isolated from the DIN rail many Rockwell Automation products are grounded through the DIN rail to chassis ground Any Rockwell Automation product that is grounded through the DIN rail must use zinc plated yellow chromate steel DIN rail Do not use non conductive or aluminum DIN rails for devices that obtain their ground through the DIN rail Taps may be mounted to any suitable DIN rail as they are ground isolated Do not use barrel connectors to connect taps on separate DIN rails Barrel connectors should be used only if taps are securely mounted on the same DIN rail or same surface Insecure mounts or use of barrel connectors between multiple DIN rails results in loose connections and tap failure Observe the minimum bend radius for interconnecting coaxial cables For the 1786 TJPR bend radius see page 39 for an example The 1786 TJPR jumper has an attenuation that is approximately double that of standard 1786 RG 6 coax cable Publication CNET INO02B EN P June 2010 Plan a C
64. up and running United States or Canada 1 440 646 3434 Outside United States or Use the Worldwide Locator at htto Awww rockwellautomation com support americas phone_en html Canada or contact your local Rockwell Automation representative New Product Satisfaction Return Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from the manufacturing facility However if your product is not functioning and needs to be returned follow these procedures United States Contact your distributor You must provide a Customer Support case number call the phone number above to obtain one to your distributor to complete the return process Outside United States Please contact your local Rockwell Automation representative for the return procedure Documentation Feedback Your comments will help us serve your documentation needs better If you have any suggestions on how to improve this document complete this form publication RA DU002 available at http wwwrockwellautomation com literature www rockwellautomation com Power Control and Information Solutions Headquarters Americas Rockwell Automation 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Europe Middle East Africa Rockwell Automation Vorstlaan Boulevard du Souverain 36 1170 Brussels Belgium Tel 32 2 663 0600 Fax 32 2 663 0640 Asia Pacific Rockwell Automation Lev
65. urchasing components see the ControlNet Media System Component List publication AG PA002 Node Nodes are the physical devices that require an address to function on the ControlNet network You can use ControlNet media system components such as repeaters to extend your network for a maximum of 99 nodes on a ControlNet network es MUNK Line Drop Line 44985 Tap A tap connects each node via a drop cable on a network to the coax media system The taps are fixed at 1 meter in length so each device is within 1 meter 3 28 ft of the trunk cable ees Jrunk Line 44986 Spare taps can be installed to add future devices You must put a tap dummy load catalog number 1786 TCAP on each spare tap to prevent noise in the system Publication CNET INO02B EN P June 2010 11 Chapter 1 ControlNet Cable System Overview Taps ate available with the following connector configurations e T or Y placement of BNC connectors IP20 T tap Y tap e T placement of TNC connector IP67 e Straight or right angle connector on the drop cable a 7 Orman Trunk Cable and Connectors The trunk cable catalog number 1786 RG6 is a low loss RG 6 quad shield coaxial cable It s the bus or central part of the coax media system The trunk cable is composed of multiple sections of cable You can use several types of special use cables such as flexible 1786 RG6F direct burial or plenum rated that a
66. used to link coax segments See Determine Repeater Requirements on page 25 for more information 14 Publication CNET INO02B EN P June 2010 ControlNet Cable System Overview Chapter 1 Link A link is a collection of one or more segments connected together by repeaters Each node in a link must have a unique address ranging from 1 99 to function on the network Link Segment A Segment B es UNK Line Drop Line 44990 Bridge A bridge is a device that acts as a communication connection between networks Multiport bridges selectively forward packets of network information from one linked segment to another segment I O cannot be controlled across a bridge only unscheduled messaging is possible Trunk Line Drop Line Publication CNET INO02B EN P June 2010 15 Chapter 1 ControlNet Cable System Overview Notes 16 Publication CNET INO02B EN P June 2010 Chapter 2 Introduction Publication CNET INO02B EN P June 2010 Plan a ControlNet Coax Media System The information in this chapter will help you determine your network requirements Along with this data consult engineering drawings of your facility for specific information concerning the best location for installing your network For example dusty indoor or harsh outdoor conditions will determine whether you need IP20 or IP67 components IP means Ingress Protection a rating based on IEC 60529 standard to determine the strength of an e
67. y 59 Connect Cable Sections 60 Terminate Segments 60 Connect Devices 61 43 Chapter3 Install a ControlNet Coax Media System Install the Trunk Cable 44 Install your trunk cable observing your cable suppliet s installation instructions and these guidelines Wire External Enclosures When you pull the RG 6 type coax cable through multiple conduit bends follow these specifications For this Pull strength should not exceed Bend radius should not exceed coax cable PVC 42 75 kg 95 Ib 76 2 mm 3 0 in FEP 61 65 kg 137 Ib 69 9 mm 2 75 in Tap drop cable 42 75 kg 95 Ib 76 2 mm 3 0 in DS 3 4 tap drop cable can be used as trunk cable in a protected area where space or small bending radius is needed The maximum length in a segment is limited to 30 m 98 43 ft Wire Internal Enclosures When the RG 6 type coax cable is not passed through conduit follow these specifications For this coax cable Bend radius should not exceed PVC cable 38 1 mm 1 5 in FEP cable 35 6 mm 1 4 in Tap drop cable 38 1 mm 1 5 in Publication CNET INO02B EN P June 2010 Install a ControlNet Coax Media System Chapter 3 Plan the Taps Installation Follow these guidelines when selecting where to mount the taps based on your topology design Protection of the tap should always be considered when selecting a location to mount the tap e If minimum spacing between taps is desired use a 17

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