Installation Instructions ControlNet Fiber-optic Ring Repeater Modules Catalog Numbers 1786-RPFRL/B, 1786-RPFRXL/B Topic Page Important User Information 2 Environment and Enclosure 3 North American Hazardous Location Approval 4 Fiber-optic Safety Statements 5 About Fiber Topology 8 Mount the Fiber Modules 11 Choose Fiber-optic Cable for the Module 19 Connect the Cable Between the Repeater Modules 24 Interpret the Status Indicators 28 Specifications 33 Additional Resources 37 About the Module The ControlNet Fiber-optic Ring Repeater module supports fiber media redundancy by using a ring topology. The fiber-optic technology permits long (1786-RPFRL/B module) or very long (1786-RPFRXL/B module) transmission ranges. Both modules provide optimum protection against EMI effects along the transmission link and at the repeaters themselves. The fiber link provides ground isolation between nodes and is less susceptible to noisy environments than traditional copper media. 2 ControlNet Fiber-optic Ring Repeater Modules Important User Information Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable. In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams. No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual. Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited. Throughout this manual, when necessary, we use notes to make you aware of safety considerations. WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss. ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard and recognize the consequences. SHOCK HAZARD: Labels may be on or inside the equipment, for example, drive or motor, to alert people that dangerous voltage may be present. BURN HAZARD: Labels may be on or inside the equipment, for example, drive or motor, to alert people that surfaces may reach dangerous temperatures. IMPORTANT Identifies information that is critical for successful application and understanding of the product. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 3 Environment and Enclosure ATTENTION: This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating. This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR 11. Without appropriate precautions, there may be difficulties with electromagnetic compatibility in residential and other environments due to conducted and radiated disturbances. This equipment is supplied as open-type equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The enclosure must have suitable flame-retardant properties to prevent or minimize the spread of flame, complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if non-metallic. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications. In addition to this publication, see the following: • Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1, for additional installation requirements • NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 4 ControlNet Fiber-optic Ring Repeater Modules North American Hazardous Location Approval The following information applies when operating this equipment in hazardous locations. Informations sur l’utilisation de cet équipement en environnements dangereux. Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest "T" number) may be used to help determine the overall temperature code of the system. Combinations of equipment in your system are subject to investigation by the local Authority Having Jurisdiction at the time of installation. Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent qu'à une utilisation en environnements de Classe I Division 2 Groupes A, B, C, D dangereux et non dangereux. Chaque produit est livré avec des marquages sur sa plaque d'identification qui indiquent le code de température pour les environnements dangereux. Lorsque plusieurs produits sont combinés dans un système, le code de température le plus défavorable (code de température le plus faible) peut être utilisé pour déterminer le code de température global du système. Les combinaisons d'équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au moment de l'installation. WARNING: Explosion Hazard - AVERTISSEMENT: Risque d’Explosion – • Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous. • Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product. • Substitution of components may impair suitability for Class I, Division 2. • If this product contains batteries, they must only be changed in an area known to be nonhazardous. • Couper le courant ou s'assurer que l'environnement est classé non dangereux avant de débrancher l'équipement. • Couper le courant ou s'assurer que l'environnement est classé non dangereux avant de débrancher les connecteurs. Fixer tous les connecteurs externes reliés à cet équipement à l'aide de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit. • La substitution de composants peut rendre cet équipement inadapté à une utilisation en environnement de Classe I, Division 2. • S'assurer que l'environnement est classé non dangereux avant de changer les piles. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 5 Prevent Electrostatic Discharge ATTENTION: This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment: • Touch a grounded object to discharge potential static. • Wear an approved grounding wriststrap. • Do not touch connectors or pins on component boards. • Do not touch circuit components inside the equipment. • Use a static-safe workstation, if available. • Store the equipment in appropriate static-safe packaging when not in use. Fiber-optic Safety Statements ATTENTION: Laser light can damage your eyes. Laser light is invisible. Looking at it directly does not cause pain. The iris of the eye will not close involuntarily as when you view a bright light. Consequently, serious damage to the retina of the eye is possible. Never look into the end of a fiber when it may have a laser coupled to it, or directly into fiber ports. Should accidental eye exposure to laser light be suspected, get an eye examination immediately. ATTENTION: Class 1 laser product. Laser radiation is present when the system is open and interlocks bypassed. Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 6 ControlNet Fiber-optic Ring Repeater Modules WARNING: Hazardous areas require the use of specially designed products. Only when the product is marked accordingly (see the product ID label) it may be used in Class I Division 2 hazardous environments. Rockwell Automation provides similar products that are intrinsically safe and are suitable for more hazardous environments. Use the appropriate products that are designed for the specific hazardous environments that your installation requires. In intrinsically-safe applications, consult with your local safety coordinator because you need specific products on both ends of the fiber link. Refer to the ControlNet EX Media Planning and Installation Manual, publication CNET-IN003. TIP IMPORTANT You must use an adapter module (1786-RPA/B) with the 1786-RPFRL/B or 1786-RPFRXL/B modules to provide power to all repeaters, and control the flow of data from one repeater to the next. The distance between repeaters that can be supported is dependent on the quality of the fiber, number of splices, and connectors. The total loss of the fiber link must be less than 15 dB for the 1786-RPFRL/B module and 10.5 dB for the 1786-RPFRXL/B module. The total size of the ring or length of the copper and fiber ControlNet network is limited by the ControlNet protocol to 20 km or less. Refer to Determine Maximum Network Length on page 21 for more information. To determine the maximum distance between any two fiber modules, refer to the table on page 19. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 7 The 1786-RPFRL/B and 1786-RPFRXL/M modules provide the following: • Two fiber channels • Activity status indicators for each fiber channel • Relay contact connector for communication and system status Figure 1- Module Components Relay Contact Connector (not shown) Indicators Protective Caps Channel 1 Fiber Port Module Locking Tab Channel 2 Fiber Port Both sides of the module contain a backplane connector. Right-side Backplane Connector with Protective Cover 42546 Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 8 ControlNet Fiber-optic Ring Repeater Modules About Fiber Topology The 1786-RPFRL/B or 1786-RPFRXL/B long or extra-long modules can be used to create a redundant optical link between segments. When used in a ring topology, a single media failure between any two repeater modules in a ring will not impact the communication link. The repeaters detect the failure of an optical link. When a failure occurs, the affected channel port status indicator will be one of the following: • Red, indicating a faulty link • Flashing green/off, indicating no network activity is present Refer to Interpret the Status Indicators on page 28 for more information. In addition, a relay contact connector on the 1786-RPFRL/B and 1786-RPFRXL/B modules indicates a remote faulty link. See page 32 for more information on the relay contact connector. We recommend that you install the duplex optical cables of the two optical channels along different routes. For more information on cabling, refer to the ControlNet Fiber Media Planning and Installation Guide, publication CNET-IN001. The fiber repeater consists of the following: • A 1786-RPA/B repeater adapter • Up to two 1786-RPFRL/B or 1786-RPFRXL/B long or extra-long fiber repeater modules • Up to four 1786-RPCD copper fiber repeater modules • Up to four 1786-RPFS or 1786-RPFM short- or medium-distance fiber repeater modules Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 9 The maximum number of repeater modules (in any combination) you can use in a configuration is dependent on the current draw of each repeater module. Total current draw supplied by the 1786-RPA/B repeater adapter cannot exceed 1.6 A @ 5V DC. In addition to using the fiber repeater in a ring topology, you can do the following: • Extend the total length of your segment • Create a point-to-point or star configuration (multiple directions from one point) • Provide electrical isolation and immunity to interference • Use in hazardous areas The number of fiber repeaters and cable length total limit depends on your network topology. Example Topology Application See page 10 for an example topology. For more information on topology application rules in relation to fiber rings, refer to the ControlNet Fiber Media Planning and Installation Guide, publication CNET-IN001. IMPORTANT You cannot have media redundancy if you have a closed loop ring installation anywhere in the network. You may use the 1786-RPFRL/B, 1786-RPFRXL/B, 1786-RPFM, or 1786-RPFS modules in a linear fiber topology. Do not mix fiber repeater modules to achieve a ring topology and 1786-RPFM modules to achieve a redundant media topology in one configuration. For additional topology configurations, refer to Allowable Configurations When Using Repeaters in a Ring Topology on ControlNet, Knowledgebase Technical Note ID 32215. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 10 ControlNet Fiber-optic Ring Repeater Modules Fiber-optic Ring Topology Use this configuration for long distances. A fiber-optic ring may contain as many as 20 member modules. These member modules (four shown in Figure 2) include the following: • 1786-RPA/B repeater adapter module • 1786-RPFRL/B long-distance ring repeater module • 1786-RPFRXL/B extra long-distance ring repeater module TIP You cannot exceed 20 repeater modules in a series. If a ring is broken, whether accidentally or on purpose for testing, the configuration then becomes linear and the number of repeaters depends on where the ring is broken. Most likely you will have as many repeaters as in the original ring, such as the four shown in Figure 2. Figure 2 - Fiber Ring Topology Example 1786-RPFR(X)L 1786-RPA 1794-ACNR15 CH1 Rx 1786-RPA CH2 Tx Rx Tx 1786-RPFR(X)L CH1 Rx Tx Rx 1786-RPFR(X)L 1786-RPA CH1 CH2 Tx Rx 1794-ACNR15 CH2 Tx Rx Tx 1786-RPFR(X)L 1786-RPA CH1 CH2 1794-ACNR15 Rx Tx Rx Tx 31237-M On all fiber repeater modules, the leftmost connector is the RX (Receive) port; the rightmost connector is the TX (Transmit) port. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 11 ATTENTION: Be certain that the adapter and repeater modules are secured together with DIN rail anchors. Failure to do so may result in the loss of communication and/or cause damage to the modules. The total number of modules that can be attached to the 1786-RPA/B repeater adapter cannot exceed four or the total power consumption of the modules cannot exceed 1.6 A @ 5V DC, whichever comes first. The 1786-RPFRL/B and 1786-RPFRXL/B modules require 570 mA each, therefore you can attach only two of these modules to a 1786-RPA/B repeater module. If you exceed the module or power limit, you may cause damage to the modules and repeater adapter. Mount the Fiber Modules This section explains how to mount the module. TIP Horizontal mounting is preferred. Vertical mounting is allowed. We recommend that the 1786-RPA/B module be mounted at the top if vertical mounting is chosen. ATTENTION: This product is grounded through the DIN rail to chassis ground. Use zinc plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding. Secure DIN rail to mounting surface approximately every 200 mm (7.8 in.) and use end-anchors appropriately. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 12 ControlNet Fiber-optic Ring Repeater Modules Figure 3 - Mounting Dimensions 107 (4.20) 100 (4.0) 90 (3.6) 69 (2.76) 108 (4.25) Dimensions are in mm (in.). 31532-M Horizontal mounting requirements are determined by using the following formula: RPA/B width + (4.2 inches x number of RPFR(X)L + 2 inches For more information, see the ControlNet Modular Repeater Adapter Installation Instructions, publication 1786-IN013. IMPORTANT Maintain adequate separation from other equipment to guarantee that ambient temperature is within the operating range of this module. You must follow applicable separation codes for safe operation. Do these steps to mount a module. 1. Position the module on a 35 x 7.5 mm (1.38 x 0.30 in.) DIN rail, Allen- Bradley part number 199- DR1; 46277- 3; EN 50022). Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 13 2. Hook the lip on the rear of the module onto the top of the DIN rail, and rotate the module onto the rail. 42542 3. Press the module onto the DIN rail until flush. The locking tab should snap into position and lock the module to the DIN rail. 4. If the module does not snap into position, use a screwdriver or similar device to retract the locking tab while pressing the module flush onto the DIN rail. 5. Release the locking tab to lock the module in place. If necessary, push the locking tab to lock. 42543 Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 14 ControlNet Fiber-optic Ring Repeater Modules WARNING: Removal and insertion under power (RIUP) is not supported. These modules must be powered down while connecting and disconnecting them from any interconnected modules. If you insert or remove the module while backplane power is on, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding. 6. Remove the protective backplane cap as shown on page 18. WARNING: When you connect or disconnect the removable terminal block (RTB) with field side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding. 7. Once the modules are attached to the DIN rail, slide them together to mate the repeater adapter with the repeater module. 42632 Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 15 Install the Ferrites This procedure explains how to set up a ferrite to reduce EMI interference. The ferrite will be connected to the module’s relay contact connector. TIP If you are not planning to use the relay contact connector on the module for system status, you do not need to install the ferrites. 1. Obtain 0.25... 2.5 mm2 (22...14 AWG) wire in a length sufficient for your application. TIP You may want to choose a smaller wire gauge (for example, 0.25…0.823 mm2 (22…18 AWG) with sufficient size and rating to handle amperage requirements of the power supply to aid in installation of the ferrite. 2. Twist the wires. Use the key to open the ferrite. Remove the key and close the ferrite. Loop the Wire Around the Ferrite Twist the Wires 31530 Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 16 ControlNet Fiber-optic Ring Repeater Modules Install the Ferrite at the Power Supply Do these steps to attach the ferrite to the power supply of the 1786-RPA/B module. 1. Use the key supplied with the ferrite to open it. Be careful not to damage the wires. 2. Form a loop with both wires (+ and -) approximately 100 mm (4 in.) away from the power supply connector of the 1786-RPA/B module. 3. Loop the wires through the ferrite. 4. Close the ferrite. Be careful not to damage the wires. 5. Strip approximately 6 mm (0.24 in.) of wire from the end that will connect to the power supply connector on the 1786-RPA/B module. 6. Remove the power supply connector from the 1786-RPA/B module. 7. Install the stripped ends of the wires in the power supply connector on the 1786-RPA/B module as shown below. Connect Power Supply Wires 31528 IMPORTANT Do not use more than one ferrite per 1786-RPA/B module. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 17 8. Reinsert the power supply connector into the 1786-RPA/B module. Install the Ferrite at the Relay Contact Connector 1. Use the key to open the remaining ferrite. 2. Form a loop with both wires (+ and -) approximately 100 mm (4.0 in.) away from the relay contact connector of the 1786-RPFRL/B or 1786-RPFRXL/B module. 3. Loop the wires through the ferrite. 4. Close the ferrite. Be careful not to damage the wires. 5. Strip approximately 6 mm (0.24 in.) of wire from the end that will connect to the relay contact connector on the 1786-RPFRL/B or 1786-RPFRXL/B module. 6. Remove the relay contact connector from the 1786-RPFRL/B or 1786-RPFRXL/B module. 7. Install the stripped ends of the wires in the relay contact connector on the fiber repeater module as shown below. Connect the Ferrite Here 8. Reinsert the relay contact connector into the 1786-RPFRL/B or 1786-RPFRXL/B module. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 18 ControlNet Fiber-optic Ring Repeater Modules 9. Connect the fiber cable as described on page 26. 10. If you plan not to use a channel, attach a small section of fiber cable (or a Simplex fiber loop) between the Receive port (RX) and the Transmit Port (TX) of any unused fiber port to create a jumper. Although not required for module operation, the jumper turns the status indicators green and prevents the relay contact connector from opening and indicating a failure. Protective Backplane Cap Protective Cap Remove the Protective Caps 1. Remove the protective caps from the fiber ports that you are going to use. 2. Save the caps for future use. The left side of the module (not shown here) also contains a backplane connector. If you plan Then To place the module in storage Keep the protective caps on the channels to protect the unit from dust. To connect another module to the right backplane connector Remove the protective backplane cap and save the cap for future use. Not to connect to the right backplane connector Leave the backplane cap on. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 19 ATTENTION: Do not discard the end cap. Use this end cap to cover the exposed interconnections on the last repeater module on the DIN rail. Failure to do so could result in equipment damage or injury from electric shock. Choose Fiber-optic Cable for the Module The type of fiber cable you choose to use depends on the network environment. Consult your installation professional to determine the best type of cable to use for your environmental conditions. Refer to the ControlNet Fiber Media Planning and Installation Guide, publication CNET-IN001, for details. Understand the Maximum Optical Power Budget This table shows the maximum optical power budget available for different cable types. Note that the 1786-RPFRL/B module cannot be used with single-mode fiber. Module Cable Type Optical Power Budget Termination Type 1786-RPFRL/B 62.5/125 µm, multimode, 1300 nm, graded index 15 dB 1786-RPFRXL/B 62.5/125µm, multimode, 1300 nm, graded index 10.5 dB ST connectors, plastic or ceramic; no metal connectors 9/125 µm, single mode, 1300 nm, graded index See page 20 for formulas to determine your optical power budget. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 20 ControlNet Fiber-optic Ring Repeater Modules The sample formulas in the example illustrate how you can determine the total loss for fiber-optic cables in your system configuration. The values we use in the formulas are typical: yours may vary, depending on your application. EXAMPLE Determining total loss for fiber-optic cables The total loss of the fiber-optic cable between two modules must not exceed the optical power budget. The total loss is the sum of each connector loss plus the loss of the fiber plus the loss associated with the splices in the system, if any. The total loss can be determined as follows: Total loss = [(loss per connector) x (the number of connectors)] + [(loss per km of fiber) x (km of fiber)] + [(other losses)] For example, with 2 connectors, each having 0.3 dB of loss, 10 km of multimode fiber with a loss of 1 dB/km, and no splices, the total loss is 10.6 dB. See the following formula: Total loss = [(0.3 dB x 2) + (1 dB/km x 10 km)] Total loss = 10.6 dB This fiber-optic cable is acceptable for use between two 1786-RPFRL/B modules because the total loss is less than the optical power budget of 15 dB. However, this cable could not be used with the 1786-RPFRXL/B module because the total loss exceeds the optical power budget of 10.5 dB. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 21 Determine Maximum Network Length The quality of the fiber cable determines the maximum distance between modules in a networked system. The delay in the system (described in the following table) determines the maximum length you can achieve with your network. The worst-case delay (between any nodes) must be less than 121 μs. This table lists worst-case delays for physical layer components. Table 1 -Worst-case Delay Component Delay Coaxial cable 4.17 ns/m Fiber 5.01 ns/m 1786-RPA/B module 901 ns 1786-RPFM module 153 ns 1786-RPFS module 94 ns 1786-RPCD module 100 ns 1786-RPFRL/B 1786-RPFRXL/B modules 100 ns TIP When determining the worst-case delay for your system, consider how many components you want to use. You can use as many as twenty fiber repeater modules in a ring or series as long as you do not exceed the maximum network length, as determined by the worst-case delay. The maximum cable distance (that is, the longest route between any two adjacent or non-adjacent nodes) is limited by the ControlNet protocol to 20 km or less. Refer to Determine Maximum Network Length on page 21 for more information. See Figure 4 on page 22 and the example on page 23 to understand how to determine the worst-case delay for your system. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 22 ControlNet Fiber-optic Ring Repeater Modules Figure 4 -Determine Worst-case Delay Node 1 1786-RPFR(X)L 1786-RPA 1794-ACNR15 CH1 Rx CH2 Tx Rx Tx B A Node 2 Node 3 H 1786-RPA 1786-RPFR(X)L CH1 Rx G Tx Rx F 1786-RPFR(X)L 1786-RPA CH1 CH2 Tx Rx D 1786-RPFR(X)L 1786-RPA CH1 1794-ACNR15 CH2 Tx Rx Tx C CH2 1794-ACNR15 Rx Tx Rx Tx Node 4 E 31237-M Segment Length A 200 m B 2 km C 10 m D 1 km E 20 m F 5 km G 20 m H 200 m Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 23 EXAMPLE Determining worst-case delay To determine the worst-case delay in a ring topology, first disregard the shortest fiber segment in the system. In Figure 4 on page 22, the shortest segment is segment H, with the 200 m fiber. Remove segment H. You will see that the worst-case delay is now between nodes 1 and 2. You must account for worst-case delays introduced by physical media when setting up the media configuration screen in RSNetWorx software. If too many components with too great a delay are entered into RSNetWorx for ControlNet software, the delay becomes too great for the bandwidth RSNetWorx software has available. This affects system performance and limits network length. If you do not account for all media components in the worst-case delay path, erratic network operation will result. Refer to the documentation supplied with RSNetWorx for ControlNet software for more information. This example shows you in a simple way how to account for system delays. In this example, you enter the total length of all media components between nodes 1 and 2 into RSNetWorx for ControlNet software. The totals of the components between nodes 1 and 2 are as follows, as specified in Table 1 on page 21: Coax media delay: 200 m (A) + 20 m (G) = 220 m x 4.17 ns Fiber media delay: 2 km (B) + 1 km (D) + 5 km (F) = 8 km x 5.01 ns 1786-RPA/B module delay: 1 (at node 1) + 1 (at node 3) + 1 (at node 4) +1 (at node 2) = 4 x 901 ns 1786-RPFRL/B or 1786-RPFRXL/B module: 1 (at node 1) + 1 (at node 3) + 1 (at node 4) +1 (at node 2) = 4 x 100 ns In summary: Worst-case delay = 220 x 4.17 + 8000 x 5.01 + 4 (901) + 4 (100) = 45 µs This delay is acceptable because 45 µs is less than the maximum allowable delay of 121 µs. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 24 ControlNet Fiber-optic Ring Repeater Modules Set up the Network SMAX Parameter in RSNetWorx Software You must set up the SMAX parameter in RSNetWorx for ControlNet software to use with the 1786-RPFRL/B or 1786-RPFRXL/B module. The SMAX parameter sets the maximum scheduled node address on a ControlNet network. Refer to the documentation supplied with the RSNetWorx for ControlNet software. You must set the SMAX parameter at least one node number higher than the highest used scheduled node number. For example, on a network with 49 scheduled nodes (with 49 being the highest used scheduled node number), you must set SMAX to at least 50. In this example, node number 50 is an unused scheduled node number. IMPORTANT When setting the SMAX parameter, you must allow one unused scheduled node address. This unused node address must be the highest available scheduled node number. Therefore, the maximum usable node address when using the 1786-RPFRL/B or 1786-RPFRXL/B module is 98. Connect the Cable Between the Repeater Modules The following pages explain instructions for properly and safely connecting fiber cable. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 25 Terminate the Cable Termination is the process of attaching connectors to the ends of fiber cable. Follow these general instructions when terminating fiber cable. ATTENTION: Safety glasses are required to protect your eyes when you handle chemicals and cut fiber. Pieces of glass fiber are very sharp and can easily damage the cornea of your eye. Cleaved glass fibers are very sharp and can pierce the skin easily. Do not let cut pieces of fiber stick to your clothing or drop in the work area where they can cause injury later. Use tweezers to pick up cut or broken pieces of the glass fibers and place them on a loop of tape kept for that purpose alone. Keep your work area clean. IMPORTANT Be certain to follow the instructions that are provided by your fiber termination kit manufacturer. 1. Organize your termination kit materials. 2. Reference your plan to be certain that you have enough supplies to make the fiber connections and to terminate all used fiber cable ends. 3. Make a schedule for performing the connections. 4. Follow the assembly and safety procedures for your termination kit. 5. Place a dust cap (supplied in fiber cable kits) on the end of the connector. ATTENTION: If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 26 ControlNet Fiber-optic Ring Repeater Modules Connect the Cable This section describes how to connect cables by using the tracer on the cable to identify and follow the cable throughout your system. A tracer is one of the two wires on the duplex cable that is one of the following: • Printed with the cable legend • Ribbed For further information on choosing cables and wiring your system, refer to the ControlNet Fiber Media Planning and Installation Guide, publication CNET-IN001. TIP RX RX TX TX The instructions explain how to connect the cable between the fiber modules by making a simple ‘criss-cross’ connection. To do this, you will connect the cables between modules from the receive (RX) end of one channel to the transmit (TX) end of the other module, as shown in the following diagram. Channels 1 and 2 on the module are identical. Channel 1 of a module can be connected to either channel of another module. Do these steps to connect the cable. 1. Use the tracers on the cable to identify which cable is connected to the receive (RX) port and which one to the transmit port (TX). Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 27 2. Connect the receive port (RX) and transmit port (TX) at the starting module. 3. Do the following to attach the cable connector to the module connector. 42550 a. Align the key of the cable connector with the slot in the module connector, and insert the connector into the RX port. b. Push and twist the locking cap until the bayonet lug is locked into place. 4. At the second module, connect the cables in reverse. For example, tracer to TX port on module 1, non-tracer to RX port on module 1: tracer to RX port on module 2, non-tracer to TX port on module 2. ATTENTION: Under certain conditions, viewing the optical port may expose the eye to hazard. When viewed under some conditions, the optical port may expose the eye beyond the maximum permissible exposure recommendations. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 28 ControlNet Fiber-optic Ring Repeater Modules Interpret the Status Indicators Fiber repeaters receive status information from the repeater adapters. Because of this, you should use the fiber repeater status indicators in conjunction with the 1786-RPA/B status indicators to diagnose an anomaly. For status indicators for this module See 1786-RPA/B Table 2 1786-RPFRL/B and 1786-RPFRXL/B Table 3 TIP In general, if the status indicators on the 1786-RPA/B module are green, the fiber repeater module is operating properly. For more information on the 1786-RPA/B module, refer to the ControlNet Modular Repeater Adapter Installation Instructions, publication 1786-IN013. 1786-RPA/B Status Indicators The status indicators on the repeater adapter can be interpreted singly or together. The following three tables list different combinations of status indicators and their interpretations. 1786-RPA/B 1786-RPFRL/B Repeater Module Status Indicators Repeater Adapter Status Indicators Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 31216 ControlNet Fiber-optic Ring Repeater Modules 29 Table 2 -1786-RPA/B Repeater Adapter Module Status Indicators If repeater adapter indicator is This means You should Alternating red/green The repeater adapter is being powered or reset. Do nothing. The repeater adapter is operating properly. Solid red A jabber condition has occurred. Another node or repeater on the network is transmitting constantly. Check the network and components for proper operation. Off The repeater adapter is not powered or has failed. Check the power input to the repeater adapter for correct voltage and polarity. Solid green Error-free data is being recovered at the coax port of the repeater adapter. Do nothing. The repeater adapter is operating properly. Flashing green/off Data with errors is occasionally being recovered at the coax port of the repeater adapter. This situation will normally correct itself. If the situation persists check the following: • All BNC connector pins are seated properly. • All taps are Rockwell Automation taps. • All terminators are 75 Ω and are installed at both ends. • The coax cable has not been grounded. Flashing red/off Either no data is being received at the coax port of the repeater adapter, or data with a large number of errors is being received at the coax port of the repeater adapter. Check for the following: • Broken cables. • Broken taps. • Missing segment terminators. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 30 ControlNet Fiber-optic Ring Repeater Modules 1786-RPFRL/B or 1786-RPRFRXL/B Status Indicators Channel 1 Status Indicator Channel 2 Status Indicator Table 3 - Fiber Repeater Module Status Indicators If the fiber repeater module indicator is This means You should Off Fiber repeater module is not connected to the power supply. Connect the repeater to the power supply. Green Fiber repeater module is running without network errors. Do nothing. The fiber repeater module is operating properly. Flashing green/off No data activity on network. If the cable is attached, do the following: • Ensure that the receive (RX) channel is connected to the transmit (TX) channel on both modules. • Check for broken fiber. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 31 Table 3 - Fiber Repeater Module Status Indicators If the fiber repeater module indicator is This means You should Flashing red/off Module is powered, but not ready for operation. This state should also occur during module reset and last for approximately 5 seconds. Do nothing. The fiber repeater module is operating properly. Intermittent red As more data errors are detected the frequency of the flashing red increases until a solid red displays. Check for proper operation. Red Excessive receive signal distortion. Review these items: • Be certain that you are using the correct fiber type for your module. • Check fiber length and attenuation to make sure that it is within specification. • Replace the downstream 1786-RPFRL module on the channel that is having the intermittently flashing red status indicator. • Be certain that your total network length is not out of specification. • Be certain that SMAX is correctly defined in the RSNetWorx for ControlNet software. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 32 ControlNet Fiber-optic Ring Repeater Modules 1786-RPFRL/B or 1786-RPFRXL/B Relay Contact Connector The fiber repeater module contains a single electromechanical relay for communication and system status. Relay Contact Connector 31531-M Table 4 -Relay Contact Connector Diagnostics If Then • No receive data is present at one or both fiber-optic ports for more than 1300 ms (that means if either Channel 1 or Channel 2 status indicators are not solid green, the fault relay will open.) The relay contact is open. • The repeater is not connected to the power supply. Neither of the above two conditions are met. The relay contact is closed. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 33 Specifications Technical Specifications - 1786-RPFRL/B, 1786-RPFRXL/B Attribute 1786-RPFRL/B, 1786-RPFRXL/B All supply voltages or voltage ranges Input: 570 mA @ 5V DC, max Relay: 900 mA @ 30V DC, max resistive Backplane power requirements 2.8 W (3.02 W, max)(1) Communication rate 5 Mbps Mounting orientation Any mounting orientation Relay contact connector voltage 30V DC, max Relay contact connector current consumption 1 mA, min; 900 mA, max Relay contact load type Resistive only Isolation voltage 50V (continuous), Basic insulation type, Relay contacts to system Optical power budget See the optical power budget table on page 19 Wire size 0.25... 2.5 mm2 (22...14 AWG) solid or stranded copper wire rated at 75 °C (167 °F ), or greater, 1.2 mm (3/64 in.) insulation max for relay connections Wiring category 2 - on signal ports(2) Enclosure type rating None (open-style) North American temp code T5 (1) Operational power is provided from the 1786-RPA/B module. For application within the U.S., supply the 1786-RPA/B module from a power supply that is appropriately certified Class 2 per the definition in the National Electrical Code, ANSI/NFPA 70, Article 725. For applications outside the U.S., supply the 1786-RPA/B module from a safety extra low voltage (SELV) power supply. SELV output is built with appropriate isolation to withstand single fault conditions. The output cannot exceed 30V rms, 42.4V peak, or 60V DC under fault conditions. (2) Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 34 ControlNet Fiber-optic Ring Repeater Modules Environmental Specifications - 1786-RPFRL/B, 1786-RPFRXL/B Attribute 1786-RPFRL/B, 1786-RPFRXL/B Temperature, operating 0…60 °C (32…140 °F) IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock) Temperature, surrounding air, max 60 °C (140 °F) Temperature, nonoperating -40…85 °C (-40…185 °F) IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold), IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock) Relative humidity 5...95% noncondensing IEC 60068-2-30 (Test Db, Unpackaged Damp Heat) Vibration 5 g @ 10...500 Hz IEC60068-2-6 (Test Fc, Operating) Shock, operating 30 g IEC60068-2-27 (Test Ea, Unpackaged Shock) Shock, nonoperating 50 g IEC60068-2-27 (Test Ea, Unpackaged Shock) Emissions Group 1, Class A CISPR 11 ESD immunity 6 kV contact discharges 8 kV air discharges IEC 61000-4-2 Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 35 Environmental Specifications - 1786-RPFRL/B, 1786-RPFRXL/B Attribute 1786-RPFRL/B, 1786-RPFRXL/B Radiated RF immunity IEC 61000-4-3 10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz 10V/m with 200 Hz 50% Pulse 100% AM at 900 and 1890 MHz 1V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz EFT/B immunity ±4 kV at 5 kHz on signal ports IEC 61000-4-4 Surge transient immunity ±1 kV line-line (DM) and ±2 kV line-earth (CM) on signal ports IEC 61000-4-5 Conducted RF Immunity 10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz IEC 61000-4-6 Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 36 ControlNet Fiber-optic Ring Repeater Modules Certifications(1) - 1786-RPFRL/B, 1786-RPFRXL/B Certification(2) c-UL-us (3) CE(4) 1786-RPFRL/B, 1786-RPFRXL/B UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and Canada. See UL File E194810. European Union 2004/108/EC EMC Directive, compliant with: • EN 61326-1; Meas./Control/Lab., Industrial Requirements • EN 61000-6-2; Industrial Immunity • EN 61000-6-4; Industrial Emissions • EN 61131-2; Programmable Controllers (Clause 8, Zone A & B) C-Tick Australian Radiocommunications Act, compliant with: • AS/NZS CISPR 11; Industrial Emissions (1) When product is marked. (2) See the Product Certification link at http://www.ab.com for Declarations of Conformity, Certificates, and other certification details. (3) To comply with UL restrictions, the relay connection must be powered from a source compliant with Class 2 or Limited Voltage/Current. (4) To comply with the CE Low Voltage Directive (LVD), the relay connection must be powered from a source compliant with safety extra low voltage (SELV) or protected extra low voltage (PELV). Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 37 Additional Resources These documents contain additional information concerning related Rockwell Automation products. Resource Description ControlNet Coax Taps Installation Instructions, publication 1786-IN007 Document contains procedures and specifications for the installation of ControlNet coaxial taps. ControlNet Coax Media Planning and Installation Guide, publication CNET-IN002 Document describes the components and topologies for creating a ControlNet coax media system. ControlNet Fiber Media Planning and Installation Guide, publication CNET-IN001 Document describes the components and topologies for creating a ControlNet fiber media system. Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1 Document contains more information on proper wiring and grounding techniques. You can view or download publications at http://www.rockwellautomation.com/literature/. To order paper copies of technical documentation, contact your local Rockwell Automation distributor or sales representative. Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 38 ControlNet Fiber-optic Ring Repeater Modules Notes: Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 ControlNet Fiber-optic Ring Repeater Modules 39 Notes: Rockwell Automation Publication 1786-IN003D-EN-P - April 2011 Rockwell Automation Support Rockwell Automation provides technical information on the Web to assist you in using its products. At http://www.rockwellautomation.com/support/, you can find technical manuals, a knowledge base of FAQs, technical and application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools. For an additional level of technical phone support for installation, configuration, and troubleshooting, we offer TechConnect support programs. For more information, contact your local distributor or Rockwell Automation representative, or visit http://www.rockwellautomation.com/support/. Installation Assistance If you experience a problem within the first 24 hours of installation, please review the information that's contained in this manual. You can also contact a special Customer Support number for initial help in getting your product up and running. United States or Canada 1.440.646.3434 Outside United States or Canada Use the Worldwide Locator at http://www.rockwellautomation.com/support/americas/phone_en.html, or contact your local Rockwell Automation representative. New Product Satisfaction Return Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from the manufacturing facility. However, if your product is not functioning and needs to be returned, follow these procedures. United States Contact your distributor. You must provide a Customer Support case number (call the phone number above to obtain one) to your distributor to complete the return process. Outside United States Please contact your local Rockwell Automation representative for the return procedure. Documentation Feedback Your comments will help us serve your documentation needs better. If you have any suggestions on how to improve this document, complete this form, publication RA-DU002, available at http://www.rockwellautomation.com/literature/. Allen-Bradley, Rockwell Software, Rockwell Automation, RSNetWorx for ControlNet, RSNetWorx, and TechConnect are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies. Rockwell Otomasyon Ticaret A.Ş., Kar Plaza İş Merkezi E Blok Kat:6 34752 İçerenköy, İstanbul, Tel: +90 (216) 5698400 Publication 1786-IN003D-EN-P - April 2011 Supersedes Publication 1786-IN003C-EN-P - February 2002 PN-92666 Copyright © 2011 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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