Home

Planning and Installation Manual

Contents

1. 1 Cutthe required lengths from reels of trunk line using a sharp cable cutter providing sufficient length in each segment to reduce tension at the connection Important Cover the bare drain wire in the enclosure with the insulating tubing supplied in the accessory kit 2 Insert conductors into the terminal block clamping cavities following the color coding specified for the terminal blocks at the incoming and outgoing thick cables and as many as eight thin cables thick cable terminal blocks Tweet BEEZS blue 10 O drain 0 0 drain gt white O 10 red 10 0 black 225 8 black 10 red blue 10 0 white trunk line 557 trunk line 10 drain thick cable ie 9 thick cable white 0 0 blue HN chu red O 10 black alll 3 LH Lea aee ae black Q Q dh dh blue Q o white Bj B n drain 0 10 drain 9 white Q 0 blue D red 0 10 drop line plug TUN o n drop line black 0 0 thin cable and nut il D thin cable blue Q 0 white Le dain Q 0 drain UH lug and nut white O 0 blue 12 09 5 E red 0 0 black locking nut hex flange gland nut 3 Tighten all clamping screws to secure conductors to the terminal blocks 4 Seal unused ports with nylon plugs and nuts in the accessory kit
2. terminator _ n generic sealed device T Pottap JEL ii B amp B DevicePort tap dc power 8 port supply N thick cabe ee SWS PowerTap generic sealed device tap UN thick cable thin cable generic Bef sealed device thick cable i open style tap e gn 1 S terminator leeooo T Port tap See TTT 20479 Component Description Component Description Trunk line The cable path between terminators that T Port tap A single port connection with sealed represents the network backbone connectors itis made up of thick or thin cable connects to taps or directly to devices Drop line The drop line is made up of thick or thin cable DeviceBox tap A junction box that allows 2 4 or 8 drop lines connects taps to nodes on the network to connect to the trunk line Node device An addressable device that contains the DevicePort tap A junction box with sealed connectors that DeviceNet communication circuitry allows 4 or 8 drop lines connect to the trunk line Terminating resistor The resistor 121W 196 1 4W or larger attaches only to the ends of the trunk line PowerTap tap The physical connection between the power supply and the trunk line Open style connector Used with devices not exposed to harsh environments Open style tap Screw terminals that connecta drop line to the trunk line Sealed style connector Used with devices ex
3. Publication DN 6 7 2 August 1997 Right keyway Left keyway Female Connector End View white 1485P P1N5 MN5R1 1485P P1N5 MN5L1 blue drain 7 red black drain black white blue 1485P P1R5 DR5 Overview of the DeviceNet Cable System About the T Port Tap The T Port tap connects to the drop line with a mini or micro quick disconnect style connector Mini T Port taps provide right or left keyway for positioning purposes Mini T Port Tap Keying Information drain blue Male Connector tH End View white black dran red in mm Micro T Port Tap 0 70 0 39 17 10 0 92 23 1 58 40 Y Y 30164 M Publication DN 6 7 2 August 1997 1 6 Overview of the DeviceNet Cable S ystem About the DeviceBox Tap DeviceBox taps are a direct connection to the trunk line providing terminal strip connections for up to 8 nodes using thin cable drop lines They have a removable gasket cover and cable glands to provide a tight sealed box that can be mounted on a machine 8 Port DeviceBox Tap 1485P P8T5 T5 2 Port DeviceBox Tap 1485P P2T5 T5 4 Por
4. 5 pin fixed internal thread 5 Dia 0 22 micro female connector us 1 gt Y 1 1 9 2 3 thin cable 2m A Se Meu 1 2 1 7 98 3 9 mm inches 8 Port DevicePort Tap with 2m Drop Line 1485P P8R5 C2 5 pin fixed internal thread Ne 35 5 5 Dia 0 22 Ji A Dr CHA L s 99 1 9 23 thin cable 2m r r SE O Cie sl YY 44 30 1 7 1 2 187 7 4 mm inches Overview of the DeviceNet Cable System 1 9 Using Connectors Connectors attach cables to other components of the DeviceNet cable system Connector Description Open plug in Uses screws to attach cable wires to the removable connector fixed Uses wires to attach directly to screw terminals Sealed mini style Attaches to taps and thick and thin cable micro style Attaches to thin cable only has a reduced current rating These are the field installable connection options Mini Micro field installable quick disconnect male plug female plug ip Screw terminals connect to the cable of the connector with male or female threaded plugs Thin Thick Micro male 871A TS5 DM1 n a Micro female 871A TS5 D1 n a Mini male 871A TS5 NM1 871A TS5 NM3 Mini female 871A TS5 N1 871A TS5 N3 10 pin linear plug with probe holes and jack screws 1787 PLUG10R 12345 1 Black c 2 Bl
5. Attaching DeviceBox Attaching DevicePort Connecting Drop mes Connecting Grounding the Cable 5 Terminating the Cable 5 Applying Appendix A What s in this lee Adjusting the Using the One Power Supply Example of Thick One Power Supply Example of Thick Appendix What s in this 1 Specifying Section 725 B 1 Chapter 1 Overview of the DeviceNet Cable System What s in this Chapter Read this chapter to familiarize yourself with the DeviceNet cable system For information on See page Understanding the DeviceNet cable system 1 1 Referring to cables 1 1 Understanding the cable system components 1 2 Co
6. Using Preterminated About Thick About Thin Cable i e icr ecc ee e de geen d Connecting to T PortTap from a Sealed Device Connecting to a T PortTap from an Open Device Connecting to a DevicePort Tap from a Sealed Device Connecting to a DeviceBox Tap from a Sealed Device Connecting to Micro T PortTaps Using Terminating Restsiore nee Whats Next e seem ier KEEN mh ba ek iieri Chapter 2 Planning a Whats in this DeviceNet Cable System Understanding Topologies Guidelines for Supplying Determining the Maximum Cable Distance Determining the Cumulative Drop Line About PowerRatings Determining Power Supply Using the Look Up Maximum Allowable One Power Supply End Segment Thick Cable Segment Between Two Power Supplies Thick Cable End Segment in Two Power Supply System Thick Cable One Power Supply End Segment Thin Cable
7. bare drain wire Rear View Rear View Trim the conductors to the same length Slide the connector hardware onto the trunk line rubber washer in the order shown grommet enclosure rear nut i slide Cet THILL 9mm Strip between 9mm 0 374in of bevelled side 0 374in insulation from the ends of all conductors except the bare Do not nick the drain wire conductor strands Important Do not twist or pull the cable while tightening the gland nut Publication DN 6 7 2 August 1997 Installing a DeviceNet Cable System 3 5 8 Attach wires to connector using screw terminals as seen in the following diagram Female Connector Male Connector power conductors black power V black power V red power V signal CAN H WEE Geng signal H red power V SLT I amp signal drain drain wire 0146 Signal CAN 1 signal De are drain wire conductors wire Rear View conductors wire blue signal 1 pe View 9 Screw the enclosure body to the connector 10 Screw the rear nut into the connector enclosure Important Do not twist or pull the cable while tightening the rear nut Installing Hard Wire Taps Cable preparation and attachment is the same for PowerTap taps and DeviceBox taps which use hard wire connections To install your taps perform the following steps and then proceed to the appropriate secti
8. One Power Supply One Power Supply Adjusting the Publication DN 6 7 2 August 1997 toc ii Table of Contents DeviceNet Cable System Planning and Installation Manual Installing a DeviceNet Cable System Using the Full Calculation Method Understanding Select NEC Topics Publication DN 6 7 2 August 1997 NEC CECode Current Boost Configuration Two Power Supplies 4 Two Power Supplies Not End Connected Choosing a Sizing a Grounding the Cable Terminating the Cable 5 negl LT Chapter 3 What s in this Chapnter I Installing a DeviceNet Cable 5 Using the Quick Checker Preparing Kei TEE Using tid pence beds Attaching Attaching Open Style Attaching Mini Micro Closed Style Connectors Installing Hard Wire Installing PowerTap
9. bh AMNEM Allen Bradley DeviceNet ub Sra Planning and Installation Manual Important User Information Because of the variety of uses for the products described in this publication those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements including any applicable laws regulations codes and standards The illustrations charts sample programs and layout examples shown in this guide are intended solely for purposes of example Since there are many variables and requirements associated with any particular installation Allen Bradley does not assume responsibility or liability to include intellectual property liability for actual use based upon the examples shown in this publication Allen Bradley publication SGI 1 1 Safety Guidelines 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 electromechanical devices that should be taken into consideration when applying products such as those described in this publication Reproduction of the contents of this copyrighted publication in whole orin part without written permission of Allen Bradley Company Inc is prohibited Throughout this manual we use notes to mak
10. August 1997 Using Terminating Resistors Overview of the DeviceNet Cable System 1 13 The resistor reduces reflections of the communication signals on the network connects the two signal conductors may be sealed when the end node uses a sealed T Port tap or open when the end node uses an open style tap Important The trunk line of your DeviceNet network must have resistor attached to each end that terminates the two signal lines The DeviceNet network will not operate without these terminating resistors When using the open style terminating resistor connect a 1210 190 1 4W resistor to the CAN CAN between blue and white data pair wires BE 1 23 4 5 X V 5 SES resistor Publication DN 6 7 2 August 1997 1 14 Overview of the DeviceNet Cable S ystem Terminating Resistors Part Number Female Side Male Side Sealed Male 1485A T1M5 Sealed Female 1485A TIN5 1485 2 sealed male _ Sealed female e mini T Port tap What s Next Now that you have seen the basic components of a DeviceNet cable system you can begin planning the layout for your network components and the distribution of power to the network Read the next chapter for requirements and considerations Publicatio
11. Whatis notin the right order Other Comments Use back for more comments Your Name Location P hone Return to Marketing Communications Allen Bradley Co 1 Allen Bradley Drive Mayfield Hts OH 44124 6118P hone FAX 216 646 3176 216 646 4320 Publication ICCG 5 21 August 1995 PN 955107 82 PLEASE FASTEN HERE DO NOT STAPLE Other Comments PLEASE FOLD HERE BUSINESS REPLY POSTAGE WILL BE PAID BY THE ADDRESSEE Rockwell Automation Allen Bradley 1 ALLEN BRADLEY DR MAYFIELD HEIGHTS OH 44124 9705 NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES PLEASE REMOVE Allen Bradley a Rockwell Automation Business has been helping its customers improve Rockwell productivity and quality for more than 90 years We design manufacture and supporta broad Allen Bradley range of automation products worldwide They include logic processors power and motion control devices operator interfaces sensors and a variety of software Rockwellis one ofthe world s leading technology companies Worldwide representation Argentina e Australia e Austria e Bahrain e Belgium e Brazil Bulgaria e Canada Chile China PRC Colombia e Costa Rica e Croatia e Cyprus e Czech Republic e Denmark Ecuador e Egypt e Salvador e Finland e France e Germany Greece e Guatemala e Honduras Hong Kong Hungary e Iceland India
12. you may 120m 2 474 Important either do the full calculation method described in Appendix A move the power supply to somewhere in the middle of the cable system and reevaluate per the following section Publication DN 6 7 2 August 1997 Planning a DeviceNet Cable System 2 13 One Power Supply Middle Connected The following example uses the look up method to determine the configuration for one middle connected power supply One middle connected power supply provides the maximum current capability for a single supply power supply section 2 section 1 122m 122m 4008 4008 91 91 300ft 300ft 37m 49m 2 1208 160 TR T T T PT T T EN 01 02 03 04 05 06 1 10A 1 25A 0 50A 0 25A 0 25A 0 25A TR terminating resistor T T Port tap PT PowerTap tap D device 1 Add each device s current together in section 1 1 10 1 25 0 50 2 85A 2 Add each device s current together in section 2 0 25 0 25 0 25 0 75A Results Find the value next largest to each section s length using Section 1 140m 2 144 figure A on page 2 8 to determine the maximum current Section 2 140m 2 144 allowed for each section approximately Important Section 1 Section 2 lt 3 6 This is lt 4A for NEC CECode compliance Section 1 is overloaded because the total current exceeds
13. 0 0045 x 0 005 x I lt 4 65V D1 50 x 0 0045 1 x 0 005 x 1 00 0 23V 1 0A 102 100 0 0045 2 0 005 x 0 50 0 23V 0 50 D3 400 x 0 0045 3 x 0 005 x 0 50 0 91V 0 50A D 800 x 0 0045 4 x 0 005 x 0 25 0 91V 0 25A 2 Add each device s voltage together to find the total voltage 0 23V 0 23 0 91V 0 91V 2 28V Results Since the total voltage does not exceed 4 65V the system will operate properly 2 28V 4 65V The percent loading is found by dividing the total voltage by 4 65 V 2 28 4 65 49 Publication DN 6 7 2 August 1997 4 Using the Full Calculation Method One Power Supply Middle Connected Example of Thick Cable This example is used to check loading on both sides of a middle connected supply on a thick cable trunk line Keep the loads especially the higher ones close to the power supply If the device location is fixed put the power supply in the center of the highest current concentration power section 1 suppl section 2 M 244m 244m 800f0 152m 122m 8000 400ft 4008 30 60m T d __ 1008 Gomm H E 0 25 0 25A 0 25A 0 25A 1 5A 0 5A TR terminating resistor T T Port tap PT PowerTap tap D device According to the look up method
14. 5 Tightly secure the cover to the enclosure Publication DN 6 7 2 August 1997 3 10 Installing a DeviceNet Cable System Connecting Drop Lines Publication DN 6 7 2 August 1997 Attaching DevicePort Taps The DevicePort tap connects as many as eight micro quick disconnect thin cables to the trunk line 2m 6 568 J5 96 J7 J8 Drop lines made up of thick or thin cable connect devices to taps Connections at the device can be open style pluggable screw connectors hard wired screw terminals soldered sealed style mini quick disconnect connectors micro quick disconnect connectors Important Connect drop lines when the cable system is inactive If you must connect to an active cable system make all other connections before the connection to the trunk line ATTENTION Although it is possible to make a screw terminal connection while the cable network is active you should avoid this if at all possible To connect drop lines 1 Attach contacts as described earlier in this section 2 Connect the cable to the device 3 Make any intermediate connections 4 Make the connection to the trunk line last Important Follow the wiring diagrams for each connection and make sure you do
15. August 1997 6 Publication DN 6 7 2 August 1997 Index mini male to mini female 1 11 description 1 11 diagram size 1 1 spool size time drift 2 19 topology overview drawing 1 1 2 1 connecting to 1 11 definition 1 2 description 11 5 diagram 1 5 keying information 1 5 trunk line sealed style terminating resistor 2 22 T Port tap trunk line attaching connectors open style 3 3 sealed style cable placement 3 1 connecting to via direct connection 1 4 definition 1 2 maximum cable distance 2 1 2 2 rating 2 4 terminating 1 4 2 1 2 22 V maximum drog 2 4 1 2 range testing 3 W voltage wiring installing guidelines 3 1 wy Publication Problem Report If you find a problem with our documentation please complete and return this form Pub Name DeviceNet Cable System Planning and Installation Manual Cat No DN Pub DN 6 7 2 Pub Date August 1997 PartNo 955127 66 Check Problem s Type Describe Problem s Internal Use Only Technical Accuracy tex illustration Completeness procedure step illustration definition info in manual What information is missing example guideline feature accessibility explanation other info not in manual Clarity What is unclear Sequence
16. D5 supply 2 power supplies atthe ends M power 02 D4 ps Power suppl suppl next to each other R HT FI TR DU D2 powem ipower D3 D4 D5 supply supply at the end and middle ml er T T BW I See 1 D2 D3 D4 D5 3 or more anywhere on the trunk line power supplies Publication DN 6 7 2 August 1997 Planning a DeviceNet Cable System 2 7 Using the Look Up Method To determine if you have adequate power for the devices in your cable system refer to the following examples and figures You have enough power if the total load does not exceed the value shown by the curve or the table In a worst case scenario all of the nodes are together at the opposite end of the power supply E RW Important This method may underestimate capacity of your network by as much as 4 to 1 Use appendix to do the full calculation method if your supply doesn t fit under the curve For this configuration example See page Thick cable Thin cable uses figure uses figure One power s
17. Indonesia e Ireland e Israel e Italy e Jamaica Jordan e Korea e Kuwait e Lebanon e Malaysia e Mexico Netherlands e New Zealand e Norway e Pakistan e Peru Philippines e Poland e Portugal e Puerto Rico Qatar e Romania e Russia CIS e Saudi Arabia e Singapore e Slovakia e Slovenia e South Africa Republic e Spain e Sweden Switzerland e Taiwan e Thailand Turkey United Arab Emirates e United Kingdom e United States e Uruguay e Venezuela e Yugoslavia Allen Bradley Headquarters 1201 South Second Street Milwaukee sWI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Publication DN 6 7 2 August 1997 PN955127 66 Supercedes Publication 1485 6 7 1 May 1995 Copyright 1997 Allen Bradley Company Inc Printed in USA
18. in the cable system This sum cannot exceed the maximum cumulative length allowed for the given communication rate used Communication rate Cumulative drop line length 125k bit s 156m 512ft 250k bit s 78m 2568 500k bit s 39m 128ft The following example uses four T Port taps and two DevicePort taps to attach 13 devices to the trunk line The cumulative drop line length is 42m 139ft where no node is more than 6m 20ft from the trunk line tap This allows you to use a communication rate of 250k bit s or 125k bit s TR n T 2m 6 6ft 3m 10ft 5m 4m 168 138 4 138 im 2m 6 68 8 38 4m 1390 3m 108 DevicePort tap m 6 6 4 ports pp 3m 10 61 am 108 im 2m 6 6ft d oan 3m 108 DevicePort tap 8 ports trunk line U line device or node TR terminating resistor Publication DN 6 7 2 August 1997 2 4 Planning DeviceNet Cable System About the Power Ratings Publication DN 6 7 2 August 1997 The power capabilities of the DeviceNet cable system include power supplies rated at 24V dc see page 2 19 for specifications power supply taps that optionally prevent back feeding of current between multiple power supplies if supplied with Schottky diode provide overcurrent pro
19. 1 26 60 197 1 06 70 230 0 91 80 262 0 80 90 295 0 71 100 328 0 64 3 0 2 5 2 0 1 5 1 0 0 5 Planning a DeviceNet Cable System 2 11 E Power Supply End Segment Thin Cable Publication DN 6 7 2 August 1997 2 12 Planning a DeviceNet Cable System One Power Supply End Connected The following example uses the look up method to determine the configuration for one end connected power supply One end connected power supply provides as much as 8A near the power supply power supply 106m 53m 350ft 175 23m 1008 758 T TH mp D T 02 D3 04 0 10A 0 30A 0 10A TR terminating resistor T T Port tap PT PowerTap tap D device 1 Determine the total length of the network 106m 2 Add each device s current together to find the 0 10 0 15 0 30 0 10 total current 0 65A Important Make sure that the required power is less than the rating of the power supply You may need to derate the supply if it is in an enclosure 3 Find the value next largest to the network length using figure A on page 2 8 to determine the maximum current allowed for the system approximately Since the total current does not exceed the maximum allowable Results gt current the system will operate properly 0 65A lt 2 47A If your application doesn t fit the curve
20. 200k bit s to 250k bit s New procedure for attaching mini micro closed style connectors New procedure for installing PowerTap taps We use revision bars to call your attention to new or revised information A revision bar appears as a thick black line on the outside edge of the page as indicated here Publication DN 6 7 2 August 1997 Whats in this Manual Much of the information provided in this manual is representative of the capability of a DeviceNet network and its associated components The National Electric Code NEC in the United States and the Canadian Electric Code CECode in Canada places limitations on configurations andthe maximum allowable power current that can be provided Important Be sure that all national and local codes are thoroughly researched and adhered to during the planning and installation of your DeviceNet network Who Should Read this Manual Preface Using This Manual Use this manual to plan and install a DeviceNet cable system This manual describes the required components of the cable system and how to plan for and install these required components Overview of the DeviceNet Cable System Planning a Full Calculation DeviceNet MP Method Cable System Installing Selected DeviceNet NEC Topics Cable System Complete We assume that you have a fundamental understanding of electronics and electrical codes basic w
21. L male connector Attaching Connectors Publication DN 6 7 2 August 1997 If you are an experienced installer you can use the following check list when installing your DeviceNet network Network current draw does not exceed power supply current limit Common mode voltage drop does not exceed limit Number of DeviceNet nodes does not exceed 64 No single drop over 6m 20ft Cumulative drop line budget does not exceed network baud rate limit Total network trunk length does not exceed network baud rate Terminating resistors are on each end of the trunk line connections are inspected for loose wires or coupling nuts Opens and shorts check if any field wiring was done Network is grounded at only one location System is powered on Both the programmable controller and DeviceNet scanner module are in run mode Important If your DeviceNet system does not run properly refer to the scanner module s display and network and status LEDs to aid in troubleshooting 00660600 0000 In Chapter 2 you determined the required lengths of trunk line and drop line segments for your network To cut these segments from reels of thick cable and thin cable use a sharp cable cutter and provide sufficient length in each segment to reduce tension at the connector Select an end of the cable segment that has been cleanly cut The positions ofthe color coded conductors should match the positions at the face of the connector Impo
22. at only one place at the PowerTap tap that is Signal closest to the physical center of the network if am possible to maximize the performance and V minimize the effect of outside noise L2 i grd typical class 2 power supply Two Power Supplies signal signal trunk line crain p V black V Br E Be SE V these V power fuses power supply supply ground Description Grounding Recommended near center of cable system attached to PowerTap tap and earth ground PT T T TR power 02 D3 54 05 supply supply Acceptable internal grounding between V and drain conductors TR PT THT TR GE power 101 02 D3 L 04 05 ower 7 pg II per To ground the network connect the network shield and drain wire to an earth or building ground using a 25mm lin copper braid or a 8 AWG wire up to 3m 10ft maximum in length use the same ground for the V conductor of the cable system and the dc ground of the power supply If possible this should be at th
23. copper stranded drain wire blue amp white data pair foamed PE PE insulation 24 AWG 19 x 36 tinned amp stranded copper conductors red amp black dc power pair 22 AWG 19 x 34 tinned amp stranded copper conductors Publication DN 6 7 2 August 1997 1 4 Overview of the DeviceNet Cable S ystem Connecting to the Trunk Line The cable system design allows replacement of a device without disturbing operation of the cable system Important The trunk line must be terminated on each end with a 1210 190 1 4W resistor See page 1 13 for more information You can connect to the trunk line through a Trunk line connection See page Trunk line connection See page T Port tap 1 5 DeviceBox tap 1 6 SS m S CH Al D Ev mira B B PowerTap tap 1 6 DevicePort tap 1 8 V BI i TN EE 21 WE Sve 9 YR Oh open style 1 7 1 7 E Y 90900 pe device with device with plug in fixed open style open style connector connector
24. devices on each Publication DN 6 7 2 August 1997 A 2 Using the Full Calculation Method Using the Equation A supply that is not end connected creates two sections of trunk line Evaluate each section independently SUM L x RO N x 0 005 x Ip lt 4 65V Term Definition L The distance m or ft between the device and the power supply excluding the drop line distance n The number of a device being evaluated starting with 1 for the device closest to the power supply and increasing by 1 forthe next device The equation sums the calculated drop for each device and compares it to 4 65V Thick cable Metric 0 015 Q m English 0 0045 Thin cable Metric 0 069 Q m English 0 021 The number of taps between the device being evaluated and the power supply For example when a device is the firstone closestto the power supply this number is 1 when a device has one device between it and the power supply this number is 2 when 10 devices exist between the evaluated device and the power supply this number is 11 For devices attached to a DeviceBox tap or DevicePorttap treat the tap as one tap The currents for all devices attached to one of these taps should be summed and used with the equation only once 0 005 The nominal contact resistance used for every connection to the trunk line The current drawn from the cable system by the device For currents within 9
25. examples in this manual are based on Class 2 power supplies Important Be sure that all national and local codes are thoroughly researched and adhered to during the planning and installation of your DeviceNet network Accessing the Web Sites You can find out more information about the DeviceNet network by visiting the Allen Bradley web site at http www ab com Information on additional DeviceNet products can be found at the Rockwell Software web site at http www rockwellsoftware com Publication DN 6 7 2 August 1997 Table of Contents Chapter 1 Overview of the What s in this DeviceNet Cable System Understanding the DeviceNet Cable Referring to Cables Understanding the Cable System Components About Thick About Thin Cable Connecting to the Trunk Aboutthe Mini Tbortfapn Hm Micro About About About Direct About DevicePot Tan Using
26. female contacts of the pluggable connector 6 4mm 0 25 Ke braided shield 65mm 2 6in 38mm jacket 1 5in shrink wrap jacket 2 shrink wrap Su 0 32in clamping cavities red AN H white rain bare CAN L blue V black pluggable connector female contacts 123 45 a a n AS I device connector male contacts gt pluggable connector female contacts Publication DN 6 7 2 August 1997 Installing a DeviceNet Cable System Attaching Mini Micro Closed Style Connectors To attach a mini micro closed style connector to the trunk line Prepare the cable jacket by cleaning loose particles from the jacket Strip 29mm 1 165in of the cable jacket from the end of the cable Cut the braided shield and the foil shields surrounding the power and signal conductors Position the five trunk line conductors to match the 70mm jacket emn 29 clean jacket 1 165in corresponding positions at the back end of the molded insert for the male or female connector twisting them if necessary Male Connector power conductors black power V SET I signal drain bare drain wire blue signal L conductors wire Female Connector black power V power conductors white signal CAN H S Signal conductors iir rain blue signal CAI ire 3
27. for all nodes on the drop line As shown in the example on page 2 3 the drop line length refers to the maximum cable distance from any node to the trunk line not the cumulative drop line length high maximum common mode voltage drop on the V and V4 conductors the voltage difference between any two points on the V conductor must not exceed the maximum common mode voltage of 5V voltage range between V and at each node within 11 to 25V Publication DN 6 7 2 August 1997 2 6 Planning a DeviceNet Cable System Determining Power The DeviceNet cable system allows several options for supplying Supply Locations power To determine which option meets your needs consider the distribution of the loads power supply location and the number of supplies used Power supplies must be 24V in the United States and Canada the power supply must also be Class 2 See page 2 19 for more information Important Whenever two or more power supplies are connected to the same segment no break in V a diode must be used at the PowerTap tap to prevent back feeding If you re using Location can be 1 power supply at the end in the middle or anywhere but the end or middle PT T T T TRI power D1 D2 D3 D4 D5 supply Ton pc Maur pm D1 D2 D3 power 04
28. gland wrench during tightening Publication DN 6 7 2 August 1997 3 8 Installing a DeviceNet Cable System 5 Firmly twist the bare wire ends to eliminate loose strands ATTENTION Make sure you use insulating tubing included with the accessory kit on bare drain wire 6 Loop each bare wire as shown below so you may insert the terminal block into the clamping cavity PowerTap Tap 1485T P2T5 T5 o Of O ONG IT 0 H power supply trunk RN 7 Firmly tighten the terminal block screw to clamp the bare wire end in place 8 After all cables are terminated secure the cover and tighten the screws to obtain the washdown rating 9 Tighten all wire glands Publication DN 6 7 2 August 1997 Installing a DeviceNet Cable System 3 9 Attaching DeviceBox Taps The DeviceBox tap contains terminal blocks that connect the trunk line and as many as eight drop lines Gland nuts secure the cables entering the ports of the DeviceBox tap To attach a DeviceBox tap
29. power supply end connected example 2 12 one power supply end segment figure 2 8 one power supply middle connected example 2 13 segment between two power supplies figure 2 91 Publication DN 6 7 2 August 1997 2 Index Publication DN 6 7 2 August 1997 two power supplies end connected example 2 16 two power supplies not end connected example 2 17 maximum drop line 2 4 equation 2s name plate setting 2 19 2 20 power supplies limit protection A 1 minimum continuous current 2 20 thick cable thin cable 2 4 0 data signaling 3 1 definitions device 1 2 DeviceBox tap DevicePort tap 1 2 drop line node open syle connector 1 2 open style tap PowerTap tap 1 2 sealed style connector terminating resistor thick cable 1 1 thin cable 1 1 T Port tap 1 2 trunk line 1 2 derating factor 2 20 power supply 3 1 A 1 PowerTap tap device definition 1 2 non isolated grounding 2 21 3 11 DeviceBox tap connectin to 1 12 definition description 1 6 1 6 diagram 1 6 3 9 installing 3 9 DevicePort tap connecting to 1 12 definition description 1 8 1 9 diagram FE sl installing 3 diagrams components 1 2 1 6 6 3 9 DevicePort tap 1 8 8 3 10 direct connection 1 7 PowerTap tap 1 6 3 8 preterminated thick cable 1 10 thin 1 11 connecting to Devic
30. the maximum current 2 85A gt 2 14 Section 2 is operational since the total current does not exceed the maximum current 0 75A 2 14A Balance the system by moving the power supply toward the overloaded section section 1 Then recalculate each section Publication DN 6 7 2 August 1997 2 14 Planning a DeviceNet Cable System power supply section 2 section 1 86m 158m 282ft 55m 127m 5188 1809 4178 im 85m 3ft 279ft EN E TRH T T T PT T T T HTRJ D le D1 02 03 04 05 D6 1 10A 1 25A 0 50A 0 25A 0 25A 0 25A TR terminating resistor T T Port tap PowerTap tap D device Add each device s current together in section 1 1 10 1 25 0 50 2 85A Add each device s current together in section 2 0 25 0 25 0 25 0 75 Publication DN 6 7 2 August 1997 Results D Find the value next largest to each section s length using Section 1 100m 2 93A figure A on page 2 8 to determine the maximum current Section 2 160m 1 89A allowed for each section approximately Important Section 1 Section 2 lt 3 6A This is lt 4A for NEC CECode compliance However if due to derating of the power supply you had to use over a 4A power supply you would exceed the NEC CECode maximum allowable current Section 1 is operational since the total current does not exceed the m
31. 096 of the maximum use the nominal device current Otherwise use the maximum rated current of the device For DeviceBox taps or DevicePorttaps sum the currents of all the attached devices and count the tap as one tap n The number of a device being evaluated starting with 1 for the device closest to the power supply and increasing by 1 for the next device 4 65V The maximum voltage drop allowed on the DeviceNet trunk line This is the total cable system voltage drop of 5 00V minus 0 35V reserved for drop line voltage drop Publication DN 6 7 2 August 1997 Using the Full Calculation Method A 3 One Power Supply End Connected Example of Thick Cable The following example uses the full calculation method to determine the configuration for one end connected power supply on a thick cable trunk line Device and Device 2 cause the same voltage drop but Device 2 is twice as far from the power supply and draws half as much current Device 4 draws the least amount of current but it is furthest from the power supply and causes the greatest incremental voltage drop power suppl 244m 800ft 122m 4008 30m 5m ooft 50ft KEE 1 0A 0 50A 0 50A 0 25A TR terminating resistor T T Port tap PowerTap tap D device 1 Find the voltages for each device using the equation for thick cable SUM L x
32. 1485R P1M5 C 2m 6 56ft 1485R P2M5 C 3m 9 84ft 1485R P3M5 C Overview of the DeviceNet Cable System About Thin Cable Preterminated thin cable assemblies for use as drop lines are available with various connectors in lengths of 1 2 3 and 4m Preterminated thin cable assemblies can also be used as trunk lines Connecting to a T Port Tap from a Sealed Device specified length product male plug female plug n E 3 O ESL thin cable T Port tap specified length product male plu female plu S thin cable L g Connecting to a T Port Tap from an Open Device 4 d 00000 Publication DN 6 7 2 August 1997 1 12 Overview of the DeviceNet Cable S ystem Connecting to a DevicePort Tap from a Sealed Device Micro Male 90 to Micro FemalePart Number male plug Specified length female plu product 1m 3 28ft 1485R P1R5 F5 Y O 2m 6 56ft 1485R P2R5 F5 thin cable mg O to DevicePort ta
33. 19 1 10 819 300 984 1 03 i6 320 1050 0 97 14 mm 340 1116 0 91 10 360 1181 0 86 0 6 H 04 380 1247 0 82 02 400 1312 0 78 420 1378 0 74 co c OO OO EH CN st oO OCH CN st CO OO CO CN st oO CO CH 480 1575 0 65 500 1640 0 63 Exceeds NEC CECode limit Publication DN 6 7 2 August 1997 Planning a DeviceNet Cable System 2 9 B Segment Between Two Power Supplies Thick Cable 50 wc Network Length Maximum 7 6 m ft Current A 9 0 0 8 00 70 20 66 8 00 6 8 40 131 8 00 D 60 197 8 00 6 0 80 262 8 00 58 100 328 8 00 24 120 394 8 00 2a 140 459 723 4 6 160 525 6 41 14 180 591 5 76 ay 200 656 5 23 3 6 220 722 4 79 34 240 787 442 2s 260 853 410 56 280 919 3 83 2 2 300 984 3 59 e 320 1050 3 37 1 6 340 1116 3 18 13 360 1181 3 02 08 380 1247 2 86 0 4 400 1312 273 0 2 420 1378 260 ee tee a 440 1444 2 49 ene ts See Sel else eee 460 1509 2 38 e af eS eae eee eee EE 500 1640 2 20 Exceeds NEC CECode limit Publication DN 6 7 2 August 1997 Planning a DeviceNet Cable System 2 10 LK End Segment in Two Power Supply System Thick Cable Ei OXXO SE CN OCONI O CO SEO CS OKO SEN C
34. 3 4 definition micro styld L9 3 10 mini style 19 3 10 terminating resistor 3 12 T Port tap 2 22 signaling data 3 1 spare capacit equation 2 18 spool size thick cable 1 3 thin cable 1 3 system current A 2 fusing 1 grounding d 2 21 113 11 making operational 2 14 overloaded guidelines 1 T DeviceBox connecting to diagram 3 9 installing 3 9 open style terminating ml 2 22 DevicePort 2 1 8 connecting 401 12 diagram taps 13 10 installing 3 10 hard wire DeviceBox 3 installing PowerTap open style PowerTap 1 5 Index NEC CECode current pa pipes pos 1 Pon 25 connecting to 1 11 sealed style terminating resistor temperature drift 2 19 terminating trunk 1 4 1 4 2 13 02 terminating E definition description is diagram 3 13 sealed style E thick cable A definiti 1 1 3 diagram preterminated description 1 10 diagram 1 10 rating size 1 T spool size 13 thin cable eer definiti 1 description 11 3 diagram preterminated connecting to a DeviceBox tap stripped conductors to micro female stripped Sonar er mini male 1 12 connecting to a DevicePort tap micro male 90 to micro female 1 12 micro male 90 to mini female 1 12 connecting to a T Port tap mini male to micro female 1 11 mini male to micro male 90 1 12 Publication DN 6 7 2
35. 4008 76m 76m 2500 2500 1008 100 EE XL o Bec uu D1 02 03 04 05 06 0 25A 0 50A 0 10A 0 25A 1 00 0 10A TR terminating resistor T T Port tap PT PowerTap tap D device 1 Determine the total length of the network 274m 2 Add each device s current together to find the total current 0 25 0 50 0 10 0 25 1 00 0 10 2 20A 3 Find the value next largest to each section s length using 280m 3 83A figure B on page 2 8 to determine the maximum current allowed for each section approximately Results e Since total current does not exceed maximum current system will operate properly 2 20A lt 3 83A Important Place the Schottky diodes in series with each power supply to keep back feeding of current to power supplies The total capabilities of both supplies must be less than or equal to 4A in North America and supplies must be listed for parallel operation Publication DN 6 7 2 August 1997 TR terminating resistor PT PowerTap tap Planning a DeviceNet Cable System 2 17 Two Power Supplies Not End Connected The following example uses the look up method to determine the configuration for two power supplies that are not end connected This configuration provides the most power to the cable system You must use diodes at the power taps to prevent back feeding of the power supplies Check your national and local codes for any restrictions on the use of p
36. 8 1 13 1 81V Since total voltage does not exceed 4 65 in either section system will operate properly section 1 2 59V 4 65V section 2 1 81V 4 65V The percent loading is found by dividing the total voltage by 4 65 V Section 1 Loading 2 59 4 65 56 Section 2 Loading 1 81 4 65 39 Publication DN 6 7 2 August 1997 Appendix B Understanding Select NEC Topics What s in this Appendix The following topics from the National Electric Code NEC section 7725 revision 1993 are known to impact the configuration and installation of DeviceNet systems in the United States There may also be additional NEC sections and local codes that must be met Other codes exist outside of the United States that may also affect your installation Specifying Section 725 Topics power limitations of Class 2 circuits the power source for Class 2 circuits must be either inherently limited thus requiring no overcurrent protection or limited by a combination of a power source and overcurrent protection marking Class 2 power supplies must be durably marked where plainly visible to indicate the class of the supply and its electrical ratings interconnection of power supplies Class 2 power supplies must not be paralleled or otherwise interconnected unless listed for such applications Publication DN 6 7 2 August 1997 adjusting configuratio B baud rate 2 1 C cables 1 11 14 maximu
37. OSE Co COLON NT NNNN OOO cOLOLOLOLOLO SF TOD 0909 Ie AINA Maximum Network Length m ft Current A 8 00 8 00 6 52 5 18 3 68 2 85 2 32 1 96 1 70 1 50 1 34 1 21 1 10 1 02 0 94 0 88 0 82 0 77 0 72 0 69 0 65 20 66 30 98 40 131 60 197 80 262 100 328 120 394 140 459 160 525 180 591 200 656 220 722 240 787 260 853 280 919 300 984 ESSE NEC CECode Maximum Current Limit GEESS EE SE pese ues f ES EE RET EE 320 1050 340 1116 360 1181 380 1247 400 1312 420 1378 440 1444 460 1509 480 1575 500 1640 0 91 006 9 91 087 6091 097 pvr 1 Ory 8 61 0c 2161 007 291 086 1811 096 9111 078 0601 08 796 006 616 08 82 Ove 6 081 6 091 969 002 L6 66 SC 76 8z 8z 292 08 461 09 86 06 99 02 0 62 0 59 0 56 0 54 0 52 0 50 Exceeds NEC CECode limit Publication DN 6 7 2 August 1997 Network Length Maximum m ft Current A 0 0 3 00 10 33 3 00 20 66 3 00 30 98 2 05 40 131 1 57 50 164
38. Once you ve moved the power supply try the calculations again power section 1 supply section 2 335m 1100ft 213m 700ft 122m 152m 4008 5008 30m 30m 100ft 1008 mp dm 0 25A 0 25A 0 25A 0 25A 1 5A 0 5A TR terminating resistor T T Port tap PowerTap tap D device 1 Find the voltages for each device in section 1 using the equation for thick cable SUM L x 0 0045 0 005 x I lt 4 65V 100 x 0 0045 1 0 005 x 0 25 0 11V 0 25 D2 400 x 0 0045 2 x 0 005 x 0 25 0 45V 0 25A 03 0700 0 0045 3 x 0 005 x 0 25 0 79V 0 25A Publication DN 6 7 2 August 1997 6 Using the Full Calculation Method D4 0 25A 05 1 5A D6 0 5A Results ub D 1100 x 0 0045 4 x 0 005 x 0 25 1 24V Add each device s voltage together to find the total voltage for section 1 0 11 0 45 0 79 1 24 2 59V Find the voltages for each device in section 2 using the equation for thick cable SUM L x 0 0045 0 005 x I lt 4 65V A 100 x 0 0045 1 x 0 005 x 1 5 0 68V 500 x 0 0045 2 x 0 005 x 0 5 1 13V Add each device s voltage together to find the total voltage for section 2 0 6
39. PowerTap tap 12 211 hard wire taps installing DeviceBox tap 3 5 PowerTap tap 3 5 1 3 Index installing DeviceBox tap 3 9 DeviceNet network guidelines cable placement 3 1 codes 3 1 voltage testing 3 1 wiring 3 1 DevicePort tap 3 10 hard wire taps DeviceBox tap 3 5 PowerTap tap 3 5 power supplies 3 11 PowerTap taps K keying information T Port tap 1 5 L line regulation 2 19 load regulation 12 19 loading percentages 2 18 A 6 locations grounding 2 21 power supplies using one 2 6 using three or more 2 6 using two 2 6 look up method examples NEC CECode current boost configuration 2 15 power supply one end connected 2 12 middle connected two end connected 2 16 not end connected figures power supply one end segment 2 8 two middle segment 2 9 two end segment 2 10 making system operational 2 14 Publication DN 6 7 2 August 1997 Index Publication DN 6 7 2 August 1997 N name plate setting 2 19 2 20 NEC 1 55 2 2 19 B 1 current boost configuration maximum current limit 2 8 section 725 B 1 node definition 1 2 0 open style connector attaching to trunk line 3 3 definition fixed 1 4 1 9 3 10 hard wire plug in tap definition 1 2 terminating resistor 3 13 DeviceBox tap 2 22 overloaded system adjusting the configuration 1 overview topology 1 1 2 1 P parallel application po
40. arallel power supplies fid 1 section 2 section 3 power power suppl supply 274m 122m 900ft 400ft 152m 61m 500ft 200ft 76m 122m 30m 250ft 400ft 1009 TR T PT T T T TR 1 FOR 1 E 0 1 m D device eem r 1 Determine the trunk line length of one end section 122m for this example we will use section 3 2 Add each device s current together in section 3 0 25 1 00 0 30 1 55A Real gt Real gt 3 Find the value next largest to the length of section 3 using 140m 1 70 figure C on page 2 10 to determine the maximum current allowed approximately Important If the total current in the section exceeds the maximum current move the power supply closer to the end and repeat steps 1 3 until the total current in the section is less than the maximum allowable current Since the total current does not exceed the maximum current section 3 will operate properly 1 55A lt 1 70A Loading is 9190 1 55 1 70 4 Determine the trunk line length of the other end section section 1 76m 5 Add each device s current together in section 1 2 25A 6 Find the value next largest to the length of section 1 using 80m 2 85A figure C on page 2 10 to determine the maximum current allowed approximately Important If the total current in the section exceeds the
41. aximum Cable Distance it is greater than the distance from the tap to the nearest terminating resistor then the drop line length must be included as part of the cable length Communication Maximum distance Maximum distance rate thick cable thin cable 125k bit s 500m 1640ft 100m 328ft 250k bit s 250m 820ft 100m 3288 500k bit s 100m 3288 100m 3288 The distance between any two points must not exceed the maximum cable distance allowed for the communication rate used Maximum Cable Distance 3m 5 50 12 67m 15m 108 som 12 1648 TR2 408 5m 168 208 trunk line drop line TR terminating resistor Drop A is not included in the approximate maximum cable length 1 5m 1m The trunk line s distance from the tap to the terminating resistor exceeds the length of Drop A Drop is included in the approximate maximum cable length 3m 5m The trunk line s distance from the tap to the terminating resistor does not exceed the length of Drop B Drop C is notincluded in the approximate maximum cable length 12m 6m The trunk line s distance from the tap to the terminating resistor exceeds the length of Drop C Publication DN 6 7 2 August 1997 Planning a DeviceNet Cable System 2 3 Determining the Cumulative The cumulative drop line length refers to the sum of all drop lines thick Drop Line Length or thin cable
42. aximum current 2 85A lt 2 93A Section 2 is operational since the total current does not exceed the maximum current 0 75A lt 1 89A Adjusting the Configuration Some ways to make your system operational include move the power supply in the direction of the overloaded section move higher current loads as close to the supply as possible move devices from the overloaded section to another section shorten the overall length of the cable system perform the full calculation method for the segment described in Appendix A for the non operational section add a second power supply to the cable system do this as a last resort as shown in the following three examples Planning a DeviceNet Cable System 2 15 NEC CECode Current Boost Configuration If the national or local codes limit the maximum rating of a power supply the following configuration can be used to replace a single higher current power supply section 1 power power section 2 91m supply supply 152m 300ft 500ft TRH T T T PT PT T TJ TR protection devices D3 D2 D1 04 05 06 removed from center 1 10A 1 25A 0 50A section 0 25A 0 25A 0 85A supplies are isolated TR terminating resistor T T Port tap V section is continuous PT PowerTap tap D device This configuration effe
43. ctively doubles the available current It has the following characteristics no loads are allowed between the PowerTap taps fuses between the two PowerTap taps must be removed to segment the conductor in the trunk line between the taps Also cut V red flush with cable jacket These are the PowerTap tap modifications signal signal trunk line drain zm V black V re y n remove V V these V power b fuses power supply aoi supply essentially two independent segments each of which is a power supply end connected system use figure on page 2 8 for each segment each power supply can be rated up to 4A and still meet NEC CECode Class 2 current restrictions Publication DN 6 7 2 August 1997 2 16 Planning a DeviceNet Cable System Two Power Supplies End Connected The following example uses the look up method to determine the configuration for two end connected power supplies Diodes must be used at the power taps to prevent back feeding of the power supplies Check your national and local codes for any restrictions on the use of parallel power supplies The NEC CECode requires that the power supplies must be listed for parallel operation power power supply 274m suppl 122m 122m 4008
44. ding terminals of additional PowerTap taps or additional power supplies to an earth ground Foranon isolated physical layer device make sure that additional grounding does not occur due to mounting of the device or external connections to the device Check each manufacturer s product instructions carefully for device grounding information Follow the manufacturer s guidelines for installing and derating the power supply including how to wire fuse and ground ac side of the supply mount the supply Publication DN 6 7 2 August 1997 3 12 Installing a DeviceNet Cable System Terminating the Cable System Publication DN 6 7 2 August 1997 To ground the cable system 1 Connect the network shield and drain wire to an earth or building ground using a 25mm lin copper braid or an 8 AWG wire up to 3m 10ft 2 Use the same ground for the V conductor of the cable system and the ground of the power supply If possible this should be at the PowerTap tap Important If you have multiple power supplies only ground one of the power supplies To function properly the cable system must have terminating resistors at the ends of the trunk line Important Do not puta terminating resistor on a node Doing so risks network failure if you remove the node The resistor must be at the end of the trunk line These terminating resistors provide connection to taps and the trunk line sealed style terminating res
45. e PowerTap tap Publication DN 6 7 2 August 1997 2 22 Planning a DeviceNet Cable System Terminating the Cable System What s Next Publication DN 6 7 2 August 1997 Important For a non isolated device make sure that additional network grounding does not occur when mounting the device or through external connections to the device Check the device manufacturer s instructions carefully for grounding information Install terminating resistors at the end of the trunk line Important Do not put the terminating resistor a node Doing so risks network failure if you remove the node The resistor must be at the end of the trunk line Use a n sealed terminating resistor when the trunk line ends at a T port tap open style terminating resistor when the trunk line ends in an enclosure or a DeviceBox tap Refer to page 3 12 for details Now that you have determined the layout of your cable system and how to supply enough power to the devices read the next chapter to learn how to connect devices attach cables to connectors and taps and ground and terminate the cable system Chapter 3 Installing a DeviceNet Cable System What s in this Chapter To complete the installation of your DeviceNet cable system follow the instructions in this chapter For mounting dimensions and wiring diagrams for all taps refer to Appendix A For information on See page Installing a Devic
46. e you aware of safety considerations ATTENTION Identifies information about practices or circumstances that can lead to personal injury or death property damage or economic loss Attention statements help you to e identify a hazard avoid the hazard recognize the consequences Important Identifies information that is critical for successful application and understanding of the product Important We recommend you frequently backup your application programs on appropriate storage medium to avoid possible data loss DeviceNet is a trademark of Open DeviceNet Vendor Association ODVA DeviceBox DevicePort and PowerTap are trademarks of Allen Bradley Company Inc a Rockwell International Company New Information Updated Information Revision Bars Summary of Changes The information below summarizes the changes to the manual since the last release The table below lists sections that document new features and additional information about existing features and shows where to find this new information For this new information See page 10 pin linear plug 1787 PLUG10R 1 9 Look up method graph and table for thin cable 2 11 Changes from the previous release that require you to perform a procedure differently or that require different equipment are listed below For this new information See page Communication rate for cumulative drop line length and maximum cable distance changed from
47. eBox tap 1 12 connecting to DevicePort tap 1 12 connecting to T Port tap terminating resistorg 1 13 3 12 thick cable 1 3 thin cable topology 1 1 2 1 T Port 1 5 diode Schottky 1 direct connection connecting to trunk line 1 4 description 1 7 diagram open style fixed 1 plug i in 1 distance maximum cable 2 1 determining 2 2 drift temperature 2 19 time drop line allowable current cable placement 3 1 connection types open style hard wire screw terminals 3 10 pluggable screw connectors sealed style quick disconnect connectors cumulative length 2 1 definition 2 3 determining communication rate 2 3 Ze part of cable length 2 2 mE equation current maximum drop line 2 5 full calculation method metric A 2 spare capacity 2 18 examples NEC CECode current boost configuration 2 15 power supply one end segment middle connected 2 13 middle segment o end connected 2 16 not end connected expansion determining spare capacity 2 18 F tw figures power supply two end segment 2 10 segment between 2 9 full calculation method description A 1 equations A 2 examples power supplies one end connected 3 middle connected making system operational 1 full calculation method 2 12 fusing cable system 1 PowerTap tap 3 1 G grounding cable system 2 21 3 11 device non isolated 2 21 3 11
48. eNet cable system 3 1 Using the quick start check list 3 2 Preparing cables 3 2 Using pinouts 3 2 Attaching connectors 3 2 Installing hard wire taps 3 5 Installing PowerTap taps 3 7 Connecting drop lines 3 10 Connecting power supplies 3 11 Grounding the cable system 3 11 Terminating the cable system 3 12 Applying power 3 13 Installing a DeviceNet For your safety and the successful installation of your DeviceNet Cable System network follow these guidelines Cable placement When determining placement of the trunk lines and drop lines consider cable rating As the cable rating is 300V do not put a cable in a cable tray or conduit that contains higher voltage cables unless you can physically isolate them data signaling Both trunk and drop lines carry data and should be kept at least 76mm 2 99in from power cables Put the cable in a separate conduit or cable tray or isolate it from other cables in a cable tray Codes Follow local codes and the standards such as NEC and CECode where applicable Wiring Do not install wires on an active network if possible Voltage testing After installation make sure that the minimum voltage and maximum voltage drops at each node meet the system requirements Publication DN 6 7 2 August 1997 3 2 Installing a DeviceNet Cable System Using the Quick Check List Preparing Cables Using Pinouts End View black power V white signa CAN H blue signal CAN
49. iring techniques ac and dc power specifications load characteristics of the devices attached to the DeviceNet network Publication DN 6 7 2 August 1997 P 2 Preface About the Related Publications Refer to the following publications for more information Title Publication Number Industrial Automation Wiring and Grounding Guidelines 1770 4 1 DeviceNet Product Overview DN 2 5 Terms for Use of the DeviceNet Specification AG 9 16 DeviceNet Media System Component List DN 2 1 DeviceNet Communication Interface System DN 2 2 Component List 1747 SDN Scanner Module Installation Instructions 1747 5 8 DeviceNet Scanner Configuration Manual 1747 SDN 1747 6 5 2 DeviceNet RS 232 Interface Module 1770 5 6 Installation Instructions 1771 SDN Scanner Module Installation Instructions 1771 5 14 DeviceNet Scanner Configuration Manual 1771 SDN 1771 6 5 118 DeviceNet Manager Software User Manual 1787 6 5 3 DeviceNet Adapter User Manual 1794 6 5 5 1794 ADN DeviceNet Adapter Installation Instructions 1794 5 14 About the National Electric Code Much of the information provided in this manual is representative of the capability of a DeviceNet network and its associated components The National Electric Code NEC in the United States and the Canadian Electric Code CECode in Canada places limitations on configurations and the maximum allowable power current that can be provided The instructions and
50. istors Male or female connections attach to trunk line ends T Port taps Female Side Male Side sealed male sealed female 0 iji Se 1485A T1M5 1485A T1N5 T Port tap Installing a DeviceNet Cable System 3 13 open style terminating resistors 121Q 1 1 4W resistors connecting the CAN_H and CAN_L conductors in mini or micro style attach to DeviceBox taps open style T Port taps trunk lines using terminator blocks Powertap taps Looooogd 123 4 5 V 28 DW EE resistor Applying Power Apply power only after you have made all connections installed terminating resistors connected devices Publication DN 6 7 2 August 1997 What s in this Appendix Supplying Power Adjusting the Configuration Appendix A Using the Full Calculation Method Use the full calculation method if your initial evaluation in Chapter 2 indicates that one section is overloaded or if the requirements of your configuration cannot be met by using the look up method For information on See page Supplying power A 1 Adjusting the configuration 1 Using the equation A 2 Important Before constructing the cable system repeat all calculations to avoid errors Follow these guidelines to protect your devices and achieve the best resu
51. lts when supplying power to the DeviceNet cable system Use power supplies rated at 24V X196 Selectapower supply that provides sufficient current for all attached devices sure you derate the PowerTap tap and the power supply using the manufacturer s guidelines Provide fuse protection for each segment of the cable system any section leading away from a power supply must have protection unless the power supply is inherently limiting to less than the cable rating Usea Schottky diode coupled to the V line with a power supply when power supplies are used in parallel can be part of the PowerTap tap Usea power supply that has its own current limit protection When the sections have a voltage drop less than 4 65 V your configuration will operate properly Ideally the voltage drops for each section should be within 1046 of each other If one section has a substantially greater voltage drop than the other you should attempt to balance the load of the cable system by moving the power supply or devices Some ways to make your system operational include shorten the overall length of the cable system move the power supply in the direction of the overloaded section move devices from the overloaded section to the another section move higher current loads as close to the supply as possible add a second power supply to the cable system breakthe network into two separate networks to reduce the number of
52. m distance 2 1 determining placement 3 1 preterminated thick thin 1 11 rating 3 1 system current fusing i grounding 2 21 3 11 overloaded guidelines A 1 ECode Class 2 2 19 current boost configuration example 2 15 maximum current limit circuit Class 2 2 4 limitations B 1 power source Pa Ce communication rate 2 1 2 2 determining 2 3 CH components diagram conductors configuration adjusting 2 14 2 14 1 connecting drop lines 3 10 power supplies to a DeviceBox tap preterminated thin cable stripped conductors to micro female stripped conductors to mini female to a DevicePort tap preterminated thin cable Index micro male 90 to micro female 1 12 micro male 90 to mini female 1 12 to a T Port tap from open device preterminated thin cable mini male to conductors to a T Port tap from sealed device preterminated thin cable mini male to micro female 1 11 mini male to mini female to the trunk line via direct connection 1 4 to trunk line using connectors open style sealed style connectors open style 1 2 attaching to trunk line fixed wire 3 10 Dee sealed 9 attaching d to trunk line micro style 1 9 3 10 mini style 1 9 3 10 1 2 18 boost example 2 15 cable system maximum A nominal maximum allowable 12 18 end segment two Bram supply system 2 10 one
53. maximum current move the power supply closer to the end and repeat steps 4 6 until the total current in the section is less than the maximum allowable current Since the total current does not exceed the maximum current section will operate properly 2 25A lt 2 85A Loading is 80 2 25 2 85 Publication DN 6 7 2 August 1997 2 18 Planning a DeviceNet Cable System Publication DN 6 7 2 August 1997 Results 7 Determine the length of the middle section section 2 274m 8 Add each device s current together in section 2 1 50 2 00 3 50A 9 Find the value next largest to the length of section 2 using 280m 3 83A figure B on page 2 9 to determine the maximum current allowed approximately Important If the total current in the section exceeds the maximum current move the power supplies closer together and repeat steps 7 9 until the total current in the section is less than the maximum allowable current Since the total current does not exceed the maximum allowable current section 2 will operate properly 3 50A lt 3 83A Loading is 9146 3 50 3 83 If the middle section is still overloaded after moving the power supplies closer together add third power supply Then recalculate each segment Important Section Section 2 Section 3 7 3A This is gt 4A and does not comply with the NEC CECode Important To determine spare capacity for future expansion subtract the actual current from the maxi
54. mum allowable current To determine the percentage loading for each segment divide the maximum allowable current into the actual current Segment Maximum Current Actual Current Spare Capacity Loading Segment 1 2 85A 2 25 0 60A 80 2 25 2 85 2 3 83A 3 50 0 33A 9190 3 50A 3 83A 3 1 70 1 55 0 15 91 1 55A 1 704 Choosing a Power Supply Planning a DeviceNet Cable System 2 19 The total of all the following factors must not exceed 3 25 of the nominal 24V needed for a DeviceNet cable system initial power supply setting 1 0096 line regulation 0 30 temperature drift 0 60 total e time drift 1 0596 load regulation 0 30 Use a power supply that has its own current limit protection Important The dc output of all supplies must be isolated from the side of the power supply and the power supply case If a single power supply is used add up the current requirements of all devices drawing power from the network This is the minimum name plate current rating that the power supply should have Your national and local codes may not permit the full use of the power system capacity For example in the United States and Canada the power supplies used must be Class 2 listed per the NEC and CECode respectively The total current available to the system must not exceed 4 In addition if multiple power supplies are used they must be listed for pa
55. n DN 6 7 2 August 1997 Chapter 2 Planning a DeviceNet Cable System What s in this Chapter To plan your cable system you need to know the specifications of your devices including how much current each node requires from the cable system This chapter will show you how to calculate your power requirements and determine power distribution maximum current curves current calculations effects of device distribution on your cable system power components needed to assemble a DeviceNet cable system For information on See page Understanding topologies 2 1 Guidelines for supplying power 2 2 Determining the maximum cable distance 2 2 Determining the cumulative drop line length 2 3 About the power ratings 2 4 Determining power supply locations 2 6 Using the look up method 2 7 Choosing a power supply 2 19 Grounding the cable system 2 21 Terminating the cable system 2 22 What s next 2 22 Understanding Topologies The maximum cable distance from any device on a branching drop line to the trunk line is 6m 20ft The trunk line must be terminated at both ends with a 1210 terminating resistor lt See page 1 13 for more information E 0 The maximum cable distance is not necessarily just the trunk line length It is trunk line the maximum distance between any two drop line devices or
56. nductors and the input from a power supply Gland nuts secure cables to the PowerTap enclosure Important As you make the attachments inside the tap make sure that conductors inside the enclosure loop around the fuses for easy access to the fuses the bare conductor is insulated in the enclosure with the insulating tubing supplied in the accessory kit the blue plastic covers are firmly attached to the fuse assemblies before applying power Important The two fuses used in the PowerTap tap are 7 5A fast acting automotive type which can be acquired from your local fuse supplier ACT type To attach a PowerTap tap 1 Cut and strip the gray PVC trunk cable back approximately 100mm 4in bo o 100mm 4in 2 Loosen the gland nut Fe 6 red 10 D Tw EY biack ldrain lt 1 O 3 Insert the cable into PowerTap tap through large cable gland until approximately 3mm 0 1211 of the cable jacket protrudes Important Trunk cable used for input from a power supply should have white and blue leads cut off short 4 Firmly tighten the gland nut to provide strain relief and sealing ATTENTION You must hold the hex flange with the cable
57. nnecting to the trunk line 1 4 Using connectors 1 9 Using preterminated cables 1 10 Using terminating resistors 1 13 What s next 1 14 Understanding the This cable system uses a trunk drop line topology DeviceNet Cable System TR Terminating Resistor trunk line TR 9 M9 __1 __1 m drop line node node node node node Trunk line and drop line lengths are determined by the communication rate used For information on multiple nodes and branching on the drop line see page 2 1 Referring to the Cables Connect components using two cable sizes This cable Is used Thick Generally as the trunk line on the DeviceNet network with an outside diameter of 12 2mm 0 48in You can also use this cable for drop lines Thin Generally as the drop line connecting devices to the main line with an outside diameter of 6 9mm 0 27in This cable has a smaller diameter and is more flexible You can also use this cable for the trunk line Publication DN 6 7 2 August 1997 Overview of the DeviceNet Cable S ystem Understanding the Cable System Components cable system Use the following diagram and table to understand the DeviceNet
58. not exceed the maximum allowable length from the device connection to the trunk connection Connecting Power Supplies Grounding the Cable System Installing a DeviceNet Cable System 3 11 To supply power you will need to install and ground the power supplies as well as connect all PowerTap taps If you haven t determined power supply placement see page 2 6 To install a power supply Important Make sure the ac power source remains off during installation 1 Mount the power supply securely allowing for proper ventilation connection to the ac power source and protection from environmental conditions according to the specifications for the supply 2 Connect the power supply using acable that has one pair of 12 AWG conductors or the equivalent or two pairs of 15 AWG conductor a maximum cable length of 3m 10ft to the PowerTap tap the manufacturer s recommendations for connecting the cable to the supply You must ground your DeviceNet cable system at only one location preferably near the physical center ofthe network using a PowerTap tap Important Do not puta terminating resistor on a node Doing so risks network failure if you remove the node You must place the resistor at the end of the trunk line The shield of the cable system and the V ground conductor of the power supply should be grounded at the same location Only one location on the cable system should be grounded Do not connect the groun
59. on for wiring the specific tap Important Before beginning make sure that the DeviceNet cable system is inactive all attached devices are turned off any attached power supply is turned off 1 Remove the cover from the tap 2 Prepare the ends of the cable sections A Strip 65mm 2 6in to 76mm 3in of the outer jacket So and braided shield from end of cable jacket Leave no more than 6 4mm 0 25 in of the braided Moe 6 4mm shield exposed mE 0 25in braided shield B Strip 8 1mm 0 32in of the insulation from the N end of each of the insulated conductors heat shrink Publication DN 6 7 2 August 1997 3 6 Installing a DeviceNet Cable System 3 Attach cables to the enclosure A Loosen the large gland nuts B Insert cables through the large cable glands so that about 3 3mm 0 13in of the cable jackets extend beyond the locking nut toward the inside of the enclosure C Hold the hex flange in place with the cable gland wrench and firmly tighten the gland nut 1485A AccKit cable gland wrench 4 Proceed to the appropriate section For information about See page Attaching PowerTap taps 3 7 Attaching DeviceBox taps 3 9 Attaching DevicePort taps 3 10 Publication DN 6 7 2 August 1997 Installing PowerTap Taps Installing a DeviceNet Cable System 3 7 The PowerTap tap contains terminal blocks that connect the trunk line co
60. p or micro T Port tap de Micro Male 90 to Mini FemalePart Number specified length product 1m 3 28ft 1485R P1N5 F5 male plug female plu J 2m 6 56ft 1485R P2N5 F5 e thin cable iio to DevicePort tap or micro T Port tap Connecting to a DeviceBox Tap from a Sealed Device Stripped Conductors to Mini Female Part Number specified length Sech 1m 3 28ft 1485R P1N5 C stripped conductors pigtails female plug H 2m 6 56ft 1485R P2N5 C eme iji m2 ag 3m 9 840 1485R P3NS C io DeviceBox tap thin cable Stripped Conductors to Micro Female PartNumber specified length product im 3 28ft 1485R P1 R5 C stripped conductors pigtails female plug m 2m 6 56 1485 2 5 0 3m 9 848 1485R P3R5 C to DeviceBox tap thin cable Connecting to Micro T Port Taps Micro Taps Part Number product 1m 3 28ft 1485R P1R5 D5 product 2m 6 56ft 1485R P2R5 D5 Ded 3m 9 84ft 1485R P3R5 D5 Am 13 128 1485R P4R5 D5 S tr thin cable 3 7 specified length Publication DN 6 7 2
61. posed to harsh environments Publication DN 6 7 2 August 1997 Spool Size 50m 164ft 150m 4928 300m 984ft 500m 1640ft Spool Size 50m 164ft 150m 4928 300m 984ft 600m 1968ft Part Number 1485C P1 A50 1485C P1 A150 1485C P1 A300 1485C P1 A500 Part Number 1485C P1 C50 1485C P1 C150 1485C P1 C300 1485C P1 C600 Overview of the DeviceNet Cable System 1 3 About Thick Cable Thick cable with an outside diameter of 12 2mm 0 48in is generally used as the trunk line on the DeviceNet network Thick cable can be used for trunk lines and drop lines 12 2mm 0 48in outside diameter 65 coverage tinned copper braid shield polypropylene fillers blue amp white data pair foamed insulation 18AWG aluminum polyester shield 19 x 30 tinned amp stranded over each pair copper conductors 18 AWG 19 x 30 tinned copper red amp black dc power pair 15 AWG 19 stranded drain wire x 28 tinned amp stranded copper conductors light gray PVC jacket overall mylar tape About Thin Cable Thin cable with an outside diameter of 6 9mm 0 27in connects devices to the DeviceNet trunk line via taps Thin cable can be used for trunk lines and drop lines 6 9mm 0 27in outside diameter 65 coverage tinned copper braid shield polypropylene fillers yellow resistant jacket overall mylar tape aluminum polyester shield over each pair 22 AWG 19 x 34 tinned
62. rallel applications These are some recommended 24V dc power supplies with NEC CECode Class 2 characteristics Brand Phone Number Part Number Description Acopian 610 258 5441 B24G350 3 5A linear A24MT350 3 5A linear Astec 619 757 1880 ACV24N3 6 3 6A linear LPS65 2 5A switcher Lambda 800 526 2325 LFS 41 24 3 8A switcher Power General 617 828 6216 FLU1 100 4 4 2 FLU1 80 4 3 3A Publication DN 6 7 2 August 1997 2 20 Planning a DeviceNet Cable System Sizing a Power Supply Follow the steps below to determine the minimum continuous current rating of a power supply servicing a common section Repeat these steps for each power supply common section end section power power supply 1 supply 2 122m 400ft 152m 60m gt 5008 2008 122m 30m 30m 400ft 100ft 100ft gt TRI PT T T T T TR D1 D2 D3 D4 D5 TR terminating resistor T T Port tap 150A 1 05A 0 25A 100 0 10A PT PowerTap tap D device Power Supply 1 1 Add each device s current together the common section 1 50 1 05 2 55 that are more than 20m 65ft from the other power supply in most cases the current for devices in the middle of a common section is included in both power supply capacities Re sults _ gt 2 55A is the minimum name plate current rating that power s
63. rrent limiting and inherent protection fuses overcurrent devices may not be necessary at the PowerTap tap Publication DN 6 7 2 August 1997 Overview of the DeviceNet Cable System 1 7 About the Direct Connection Devices can be connected directly to the trunk line only if later removal of the device will not disturb communications on the cable system Important If a device provides only fixed terminal blocks for its connection it must be connected to the cable system by a drop line This allows removal of the device at the tap or device end of the drop line without disturbing communications on the cable system 8 P eg device with fixed Open style connector Publication DN 6 7 2 August 1997 Publication DN 6 7 2 August 1997 Overview of the DeviceNet Cable S ystem About the DevicePort Tap DevicePort taps are multiport taps that connect to the trunk line via drop lines Only a micro male right angle connector with rotating coupling nut can connect to each port Add ms to these part numbers to get a mini male connector at the end of a 2m cable 4 Port DevicePort Tap with 2m Drop Line 1485P P4R5 C2
64. rtant Follow the manufacturer s instructions for stripping crimping and or tightening These pinouts are available with the DeviceNet network Notice that the pinout for the male End View connector is the opposite of the black power V female connector white signal red power V red power V CAN_H bare wire drain bare wire drain O O blue signal 1 female connector To attach See page Open style connectors 3 3 Mini micro closed style connectors 3 4 Installing a DeviceNet Cable System 3 3 Attaching Open Style Connectors To attach a pluggable screw connector to a trunk line Strip 65mm 2 6in to 75mm 2 96in of the outer jacket from the end of the trunk line leaving no more than 6 4mm 0 25in of the braided shield exposed Wrap the end of the trunk line with 38mm 1 5in of shrink wrap covering part of the exposed conductors and part of the trunk line insulation Strip 8 1mm 0 32in of the insulation from the end of each of the insulated conductors Tin the last 6 5mm 0 2610 of the bare conductors so that the outside dimension does not exceed 0 17mm 0 045in Insert each conductor into the appropriate clamping cavity of the pluggable screw connector or the screw terminal on the device according to the color of the cable insulation Tighten the clamping screws to secure each conductor The male contacts of the device connector must match the
65. section 1 is operational while section 2 is overloaded Value of Section 1 Section 2 Total maximum current 1 25A approximately 1 25A approximately Total current required 0 75A 2 25A 1 Findthe voltages for each device in section 1 using the equation for thick cable SUM L x 0 0045 0 005 x I lt 4 65V Di 100 x 0 0045 1 x 0 005 x 0 25 0 12V 0 25A 02 400 x 0 0045 2 x 0 005 x 0 25 0 45V 0 25A DS 800 0 0045 3 x 0 005 x 0 25 0 90V 0 25A 2 Add each device s voltage together to find the total voltage for section 1 0 12 0 45V 0 90V 1 47V Publication DN 6 7 2 August 1997 0 5A Using the Full Calculation Method A 5 3 Findthe voltages for each device in section 2 using the equation for thick cable SUM L x 0 0045 x 0 005 x I lt 4 65V 200 x 0 0045 1 x 0 005 x 0 25 0 23V B 400 x 0 0045 2 x 0 005 x 1 5 2 72V C 800 x 0 0045 3 0 005 x 0 5 1 81 4 Add each device s voltage together to find total voltage for section 2 0 23 2 72 1 81 4 76V Resu ee the total voltage in section 2 exceeds 4 65 V the system will not operate properly 4 76V 4 65V Attempt to correct this overload by moving the power supply 91m 300ft toward the overloaded section Now there are 4 devices in section 1 and 2 devices in section 2
66. t DeviceBox Tap 1485P P4T5 T5 67 67 2 6 26 Hn 2 M Aal 209 7856 2 of ol About the PowerTap al 18 67 2 6 E 48 um a 197 E ES jb 6 209 8 de 18 08 Gils JB P o 3 9 mm inches The PowerTap tap can provide overcurrent protection to the thick cable 7 5 for each trunk Country and or local codes may prohibit the use of the full capacity of the PowerTap tap The PowerTap tap with fuses can also be used to permit the connection of multiple power supplies to the trunk line without back feeding between supplies PowerTap Tap 1485T P2T5 T5 screw 5 16 Ib 4 sub assy 98 3 9 PG16 cable grips WW enclosure 111 4 4 schematic signal signal drain V e Ve VU V V mm inches In cases where the power supply provides cu
67. tection for the trunk line thick cable trunk line rating of 8A Important Check your national and local codes for additional information In the United States and Canada the DeviceNet cable system must be installed as a Class 2 circuit This requires limiting the current to 4A The rating of the power conductors is 8A Although the thick cable rating is 8A the cable system can support a total load of more than 8A For example a 16A power supply located somewhere in the middle of the cable system can supply 8A to both sides of the PowerTap tap Very large loads can be handled as long as no more than is drawn through any single segment of the trunk line Due to cable resistance voltage drops may limit your application to less Details are provided later in this chapter thin cable drop line rating of 3A Resistance losses may limit your application to less Details are provided later in this chapter drop line rating of 3A depending on the drop line length The maximum current decreases as the drop line length increases This applies to both thick and thin cable Drop line length Allowable current 1 5m 5ft 3A 2m 6 6ft 2A 3m 10ft 1 5A 4 5m 158 1A 6m 20ft 0 75A Planning a DeviceNet Cable System 2 5 You may also determine the maximum current in amps I by using T 15 L L drop line length ft 1 4 570 L drop line length m The maximum allowable current applies to the sum of currents
68. terminating resistors device or node TR terminating resistor Communication Maximum distance Maximum distance Cumulative drop rate thick cable thin cable line length 125k bit s 500m 1640ft 100m 3288 156m 512ft 250k bit s 250m 820ft 100m 3288 78m 256ft 500k bit s 100m 3288 100m 3288 39m 1288 Publication DN 6 7 2 August 1997 2 2 Planning a DeviceNet Cable System Guidelines for Supplying Power Follow these guidelines to protect your devices and achieve the best results when supplying power to the DeviceNet cable system Use power supplies rated at 24V 190 e Selectapower supply thatprovides sufficient current for all attached devices In the U S and Canada be sure to adhere to NEC and CECode limits respectively The power supply should only power the DeviceNet network Use a power supply that has its own current limit protection Make sure you derate the supply for temperature using the manufacturer s guidelines Provide fuse protection for each segment of the cable system Any section leading away from a power supply must have protection part of the PowerTap tap Important See page 2 19 for details on selecting a power supply Important The DeviceNet system requires a power supply to have rise time of lt 250ms to within 5 of its rated output voltage Determining the If the distance from a trunk line tap to the farthest device connected to M
69. ue QOO OO 3 Gray 4 White 5 5 Red These plugs come in a package of 10 Publication DN 6 7 2 August 1997 1 10 Overview of the DeviceNet Cable S ystem Using Preterminated Cables Mini Male to Mini Female Part Number 1m 3 28ft 1485C P1N5 M5 2m 6 56ft 1485C P2N5 M5 3m 9 84ft 1485C P3N5 M5 5m 16 41 ft 1485C P5N5 M5 10m 32 81 ff 1485C P10N5 M5 Publication DN 6 7 2 August 1997 Using preterminated cable assemblies saves you the effort of stripping and wiring connectors to the cable ends and reduces wiring errors About Thick Cable You can order thick cables in five lengths with mini connectors at each end Thick cable shorter than 6m 20ft can also be used as drop lines PT specified length mini T Port ta Lis Port tap male plug female plug l o 1 thick cable Tm rotating coupling nut rotating coupling nut 7 thick cable Mini Male to Mini Female Part Number 1m 3 28ft 1485R P1N5 M5 2m 6 56ft 1485R P2N5 M5 3m 9 84ft 1485R P3N5 M5 Mini Male to Micro Female Part Number 1m 3 28ft 1485R P1M5 R5 2m 6 56ft 1485R P2M5 R5 3m 9 84ft 1485R P3M5 R5 Mini Male to Conductors Part Number 1m 3 28ft
70. upply 1 should have Remember to consider any temperature or environmental derating recommended by the manufacturer Important This derating factor typically does not apply when considering maximum short circuit current allowed by your national and local codes Power Supply 2 2 Add each device s current together in the end section 0 25 1 00 0 10 1 35A 3 Add each device s current together in the common 1 50 1 05 2 554 section that more than 20m 658 from the other power supply In most cases the current for devices in the middle of a common section is included in both power supply capacities 4 Add the results from Steps 1 and 2 1 35 2 55 3 90A Been gt 3 90 is minimum name plate current rating that power supply 2 should have Remember to consider any temperature or environmental derating recommended by the manufacturer Important In the United States and Canada this configuration would not be allowed as the total current from power supply 1 and power supply 2 is 2 55 3 90 6 45 This is greater than the 4A maximum current allowed Publication DN 6 7 2 August 1997 Planning a DeviceNet Cable System 2 21 Grounding the Cable System You must ground your DeviceNet cable system at only one location One Power Supply Important If you use more than one PowerTap tap only one of them should be attached to an earth schematic ground Ground the V conductor shield and drain signal wire
71. upply end connected 2 12 A D One power supply middle connected 2 13 A NEC CECode current boost configuration 2 15 A D Two power supplies end connected 2 16 B A Two power supplies not end connected 2 17 Up to 3A can be drawn from a thin cable trunk line if the power supply separation is below 70m 2308 Publication DN 6 7 2 August 1997 2 8 Planning a DeviceNet Cable System Maximum Allowable Current Find the value next largest to your network length using the appropriate figure below to determine the maximum current allowed for the system approximately One Power Supply End Segment Thick Cable Important Assumes all nodes are at the opposite end of the cable from the power supply Network Length Maximum 2 m ft Geert E ES EH ES ES EE E SET DG ER DN FE LE E ER SS ERE E PEE 74 DEEL 0 0 8 00 7 2 H m 20 66 8 00 Ge 30 98 8 00 40 131 6 53 s 60 197 4 63 58 80 262 3 59 100 328 2 93 120 394 2 47 18 140 459 2 14 44 160 525 1 89 en 35 OS S praes 200 656 1 53 34 tp at NEC CECode Maximum Current Limit T 33 nc psa ers 220 722 1 39 SEH EE EK oen ve pe pe n een Dena vac e ues va e ps van ESA e n 55 240 787 1 28 58 Ge me 260 853 1 19 24 280 9
72. wer supplies 2 19 power applying guidelines determining using look up method 2 7 limitations B 1 supplying pal power conductors rating 2 4 power supplies 2 14 A 1 connecting 3 11 current limit protection A 1 derating 3 11 A 1 initial setting 2 19 locations determining 2 6 marking B 1 minimum continuous current multiple parallel applications 2 19 one end connected example exam end segment figure 2 8 middle connected rating 12 13 rating 2 4 A 1 sizing description 2 20 example 2 20 taps 2 4 two end connected example 2 16 end segment 2 10 not end connected example segment between PowerTap tap definition 1 2 derating 1 description diagram 1 6 13 8 fusing 3 7 NEC CECode current boost confi guration 2 15 schematic preterminated cables thick cable 1 10 thin cable 1 connecting to a DeviceBox tap stripped conductors to micro female stripped conductors to mini female connecting to a DevicePort tap micro male 90 to micro female micro male 90 to mini female connecting to a T Port tap mini male to micro female 1 11 mini male to mini female 1 11 R rating cables 3 1 drop line 2 4 1 current 2 19 regulation line 2 19 load 2 19 resistance contact 2 resistor 1 14 5 Schottky diode 1 sealed style connector attaching to trunk line

Download Pdf Manuals

Related Search

Related Contents

  Philips 42PF9831/69 User's Manual  Datasheet - Invictus Networks  5418 Manual  Beko WMB 91242 LC washing machine  V7 Messenger Notebook Case  LGW50621  IRIScan Anywhere 3  Business Voucher  Instructions pour l`utilisation Dessus de cuisinière en  

Copyright © All rights reserved. Failed to retrieve file