1771-2.94, Preterminated Fiber-Optic Cables and Splice Connector
Contents
1. 5 cm Radius 2000 Cycles Attenuation 850nm 5dB Km ALLEN BRADLEY WU 94 ROCKWELL INTERNATIONAL COMPANY With offices in major cities worldwide WORLD EUROPE MIDDLE HEADQUARTERS EAST AFRICA Allen Bradley HEADQUARTERS 1201 South Second Street Allen Bradley Europe B V Milwaukee WI 53204 USA Amsterdamseweg 15 Tel 1 414 382 2000 1422 AC Uithoorn Telex 43 11 016 The Netherlands FAX 1 414 382 4444 Tel 31 2975 43500 Telex 844 18042 FAX 31 2975 60222 Publication 1771 2 94 August 1986 As a subsidiary of Rockwell International one of the world s largest technology companies Allen Bradley meets today s challenges of industrial automation with over 85 years of practical plant floor experience More than 11 000 employees throughout the world design manufacture and apply a wide range of control and automation products and supporting services to help our customers continuously improve quality productivity and time to market These products and services not only control individual machines but integrate the manufacturing process while providing access to vital plant floor data that can be used to support decision making throughout the enterprise ASIA PACIFIC CANADA LATIN AMERICA HEADQUARTERS HEADQUARTERS HEADQUARTERS Allen Bradley Hong Kong Allen Bradley Canada Allen Bradley Limited Limited 1201 South Second Street Room 1006 Block B Sea 135 Dundas Street Milwaukee WI 53204 USA View Estate2. Use the following procedure Figure 2 Typical Preterminated Fiber Optic Cable Pulling Grip Foam packing and heat shrink tubing Pull grip Electrical tape Base Fiber optic cable and connectors 13397 Kellems Fiber Optic Pulling Grip Harvey Hubbel Inc Kellems Division Route 1 Lords Hill Stonington CT 06278 203 535 1250 1 Place the cable in the braided portion of the pulling device either a Kellems Fiber Optic Pull Grip or equivalent Leave the cable connectors and approximately four to six 4 6 inches of cable extending beyond the braid 2 Using the attached needle and cord enclose the cable with the braid by lacing it 3 Wrap the cable connectors with foam packing material or equivalent Leave the dust cover caps on the cable connectors 4 Position a piece of heat strink tubing over the connectors Heat the tubing with a hot air gun 5 Using electrical tape and beginning at the base spirally overwrap the pull grip where the fiber cable connectors protrude Be sure you cover the fiber optic connectors completely 6 Lubricate the cable with conventional cable lubricant 7 Monitor the cable tensile force while pulling the cable Product Dta Preterminated Fiber Optic Cables and Splice Connector 8 When the cable enters a pull box at an angle use at least a 12 inch pulley if the cable is under tension If the cable is not under tension use at least a four inch pulley 9 As you pull ca
3. 3 Typical PLC 2 Fiber Optic Installation PLC 2 30 one Converter 1772 SD2 ea NS T Twinaxial Cable 10 000 teet max Fiber Optic Cable 6 500 feet max Remote 1 0 Processor Scanner Remote I O Adapter Module Interconnect Cable Adapter Module Cat No 1771 AS Cat No 1772 CS Cat No 1771 AS Fiber Optic Converter Module Cat No 1771 AF e u LX Twinaxial Cabte 10 000 feet max Termination Resistor 2500 1 2W Ground Tweinaxial Shield at the I O Chassis Twinaxial Cable Cat No 1770 CD Beiden 9463 or Equivalent Maximum distance using continuous 100 140um fiber optic cable 13190 Figure 4 Typical PLC 3 Fiber Optic Installation I O Seanner Programmer interface Module Cat No 1775 S4A y Fiber i gt Optic OT e Remote I O Convenes my Adapter Module Module 7 Cat No 1771 AS Cat No Ly 1771 AF Py Twinaxial Cable E 10 000 feet max LT Remote 1 0 Adapter Module Fiber Cat No 1771 AS Optic Converter viigi Module i Cat No Remote I O VEE OE Adapter Module 1 Cat No 1771 AS Twinaxiat cavie 10 000 feet max Termination Resistor 2600 1 2W Ground Tweinaxial Shield at the I O Chassis Twinaxial Cable Cat No 1770 CD Belden 9463 or Eq
4. B Introduction Cable Description ALLEN BRADLEY Preterminated Fiber Optic Cables and Splice Connector Cat No 1771 PT1 PT2 PT3 PT4 CPR Product Data r ar ar L JL JL This data sheet describes a the fiber optic cables available from Allen Bradley a how to install the cables in a PLC 2 and PLC 3 system Indoor rated duplex fiber optic cables are available from Allen Bradley in four 4 lengths You use these preterminated and pretested cables to interconnect 1771 AF fiber optic converter modules into a complete fiber optic link The following table lists these cable assemblies and their catalog numbers Product Dta Preterminated Fiber Optic Cables and Splice Connector Cat No Cable Length 1771 PT1 30 Meters 98 Feet 1771 PT2 75 Meters 246 Feet 1771 PT3 150 Meters 492 Feet 1771 PT4 300 Meters 984 Feet Splice Connector Decription The Allen Bradley Splice Connector cat no 1771 CPR allows you to connect at maximum two preterminated fiberoptic cables together Refer to figure 1 You must use two 2 splice connectors for each duplex fiber optic cable splice You can calculate the dB loss of each splice connector by adding the losses of both cable terminations Figure 1 Splice Connector lt mfn Fiber optic cable Fiber optic cable 13398 To install the splice connector simply screw the SMA style cable connectors into the splice connector until seated Hold the cable body while t
5. Cambridge Ontario NIR Tel 1 414 382 2000 28 Watson Road 5X1 Telex 43 11 016 Hong Kong Canada FAX 1 414 382 2400 Tel 852 887 4788 Tel 1 519 623 1810 Telex 780 64347 FAX 1 519 623 8930 FAX 852 510 9436 PN 955099 08 Printed in USA
6. be constructed of a soft material such as plastic or rubber Cable in Ducts Observe the following guidelines when you install fiber cable in ventilation ducts Do not place fiber cables in ventilation ducts unless the cables are plenum rated Be sure there are no sharp edges in any ductwork that could cut the cable Be sure that other heavy wire cables in the ducts do not exceed the maximum crush resistance of the fiber Cable in Conduit The following guidelines apply when you install fiber cables in conduit Be sure bends in the conduit do not cause the fiber cable to exceed its minimum bend radius Use corner elbow fittings for right angle bends such as Crouse Hinds elbows type BUB of the Mogul series or equivalent These fittings reduce the amount of stress applied to the fiber when pulling cable Be sure the cable does not kink as you pull it CAUTION Do not pull a fiber cable that contains a splice A connector through conduit The splice connector will separate during installation Cables that contain a splice connector are intended solely for lay in wire tray installation and repairs Product Dta Preterminated Fiber Optic Cables and Splice Connector a Place pull boxes every 200 300 feet to reduce the amount of cable that needs to be pulled at any one time a Use pull boxes if the conduit makes several bends which total more than 180 a Pull box openings should be at least four times the minimu
7. ble from a pull box coil it in a figure eight with one foot loops This helps prevent the cable from twisting as you continue pulling Connecting Cables to the To connect the fiber optic cables to the 1771 AF module refer to figures 3 Fiber Optic Module and 4 Use the following procedure a Remove the dust cover caps from the module s fiber ports Do not discard the dust cover caps They are required for module storage and shipment a Remove the dust covers from the ends of the cable Do not discard the cable dust cover caps Important Do not scratch the ends of the cable by touching them or dropping them on hard surfaces Also do not use factory compressed air to clean the transmitter receiver ports Contaminants in the air can scratch or cloud the ports a Attach the cable to the modules by screwing the cable connectors onto the appropriate fiber port Hold the cable body while tightening the connector Be sure you do not kink the cable during installation so the fiber core does not crack Note that during installation you must criss cross one end of the fiber cable leads as shown in figures 3 and 4 WARNING Never look into the ends of an active fiber optic cable or the fiber optic module transmitters Harmful optical radiation may be present Permanent eye damage could result Use a fiber optic power meter to determine if a signal is present Product Data Perterminated Fiber Optic Cables and Splice Connector Figure
8. ightening the connector Be sure you do not kink the cable during installation in order to avoid cracking the fiber core Important Exercise special care in calculating the dB loss budget when using splice connectors These connectors increase the fiber optic link s dB losses Refer to the Fiber Optic Converter Module User s Manual publication 1771 6 5 36 Cable Location You can route fiber cables in the same conduits and wireways that contain conventional wiring Consult the current edition of the National Electrical Code Article 770 covers the installation of fiber optic cables with electrical conductors Product Data Perterminated Fiber Optic Cables and Splice Connector Fiber cables are dielectric They are non conductive and are not affected by electromagnetic signals emitted from conventional wire cables Below are some general physical installation guidelines to follow Do not install the cable where objects may drop and crush it Place underground rated cable in polyethylene or PVC conduit if the installation is underground Be sure the inside diameter of the pipe is at least four times larger than the outside diameter of the cable Be sure aerial rated cable can support its own weight and any additional weight imposed by wind ice or snow Use a messenger cable if necessary Follow the manufacturer s hanging guidelines Secure the cable every six feet minimum during long vertical runs The clamp bushings should
9. m bend radius of the cable a Refer to the current edition of the National Electrical Code for the appropriate article covering cable installation in conduit Cable Pulling Guidelines Pulling fiber cable is similar to pulling conventional copper wire cable There are two factors however which you must consider fiber optic tensile strength and minimum bend radius Fiber cable has a lower tensile strength than copper wire cable of the same outer diameter i e you cannot exert the same pulling force on a fiber cable as you can on a copper wire cable Too much fiber cable stretching can cause increased attenuation You can also cause the fiber optic connectors to separate from the cable CAUTION A fiber optic splice connector is designed to A optically connect two fiber optic cables The connector cannot withstand the tensile load of a cable pull in installation Do not install a fiber optic cable that contains a splice the way you would a one piece cable Spliced cables are intended solely for lay in installation The fiber cable s minimum bend radius is the smallest radius the cable can accommodate without being damaged Straining a cable beyond its minimum bend radius may permanently damage it Product Data Perterminated Fiber Optic Cables and Splice Connector To reliably pull a pre terminated fiber cable you must attach the cable to a pulling device that protects the fiber optic connectors Refer to figure 2
10. ted Publications Specifications Product Data Perterminated Fiber Optic Cables and Splice Connector 10 Repeat steps 5 through 8 for the preterminated cable s other fiber Both fibers must have low loss connections for proper fiber optic communication If the cable loss is higher than expected the cause may be a break in the cable or a lossy connection For additional information on Allen Bradley s fiber optic products refer to the following publications a Fiber Optic Converter Module Product Data Sheet Publication 1771 2 90 a Fiber Optic Converter Module User s Manual Publication 1771 6 5 36 Core Diameter 100m Cladding Diameter 140m Number of Fibers 2 Termination Connector Style SMA 905 Screw Type Strength Member Kevlar Bandwidth 850nm 100 MHz Km Numerical Aperture NA 0 29 Jacket Material PVC Cable Configuration Tight Buffer Outside Cable Diameter 4x7 mm 0 157 x 0 275 in 1986 Allen Bradkey Company PLC is a registered trademark of Allen Bradkey Company Weight 26 5 Kg Km 17 7 lbs 1 000 ft Installation Tensile Load 1000 N 224 8 lbs Tensile Load 300 N 67 4 lbs Minimum Bend Radius No Load 3 Cm 1 182 in Crush Resistance 220 N Cm 250 lbs ft Impact Resistance 2 5 N M 1 845 ft lbs Storage Temperature 40 to 80 C 40 to 176 F Operating Temperature 20 to 70 C 4 to 158 F Flex and Twist Resistance
11. uivalent Maximum distance using continuous 100 140 m fiber optic cable 413191 Product Dta Preterminated Fiber Optic Cables and Splice Connector Fiber Optic Cable Loss Test This test allows you to measure the amount of optical loss in the cable To test preterminated cables you will need an optical power source and power meter along with a fiber optic test cable Refer to figure 5 Figure 5 Fiber Optic Cable Loss Test Splice Connector Optical Power Meter Fiber Optic Source 13396 Use this procedure to test the cable 1 Attach one end of the test cable to the fiber optic power source WARNING Never look into the ends of an active fiber optic cable or the fiber optic module transmitters Harmful optical radiation may be present Permament eye damage could result Use a fiber optic power meter to determine if a signal is present 2 Attach the other end of the test cable to the optical power meter 3 Adjust the source power until the optical power meter registers 0 dBu 4 Turn the fiber optic source off 5 Disconnect the test cable from the optical power meter 6 Use a fiber optic splice connector to connect one end of the preterminated cable to the test cable 7 Connect the other end of the preterminated cable to the optical power meter 8 Turn the fiber optic source on and read the optical power in dBu This value is the optical loss of the cable 9 Turn the fiber optic source off Rela
Download Pdf Manuals
Related Search