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 t
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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-IN
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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, Unp
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 Con
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.
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 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
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