Rockwell Automation 1786-RPFRXL User Manual

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 topolog y. 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

http://www.rockwellautomation.com/literature/

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.

available from your local Rockwell Automation sales office or online at

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.

) describes some important differences between

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

• NEMA Standard 250 and IEC 60529, as applicable, for explanations

of the degrees of protection provided by enclosures.

, for additional installation requirements

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.

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.

WARNING: Explosion Hazard -

•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.

Informations sur l’utilisation de cet équipement en environnements dangereux.

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.

AVERTISSEMENT: Risque d’Explosion –

•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

TIP

IMPORTANT

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

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

21 for more information.

on page 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

Relay Contact Connector (not shown)

42546

Right-side Backplane Connector with Protective Cover

Both sides of the module contain a backplane connector.

Channel 2 Fiber Port

Module Locking Tab

Channel 1 Fiber Port

Protective Caps

Indicators

The 1786-RPFRL/B and 1786-RPFRXL/M modules provide the following:

• Two f ib er cha nne ls

• Activity status indicators for each fiber channel

• Relay contact connector for communication and system status

Figure 1- Module Components

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

In addition, a relay contact connector on the 1786-RPFRL/B and 1786-RPFRXL/B modules indicates a remote faulty link. See page 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

28 for more information.

32 for more

Rockwell Automation Publication 1786-IN003D-EN-P - April 2011

ControlNet Fiber-optic Ring Repeater Modules 9

IMPORTANT

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

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

TIP

1786-RPA

1786-RPFR(X)L

1786-RPA

CH1 CH2

1786-RPA

1786-RPFR(X)L

1786-RPA

1786-RPFR(X)L

CH1 CH2

RxTxRx

1794-ACNR15

31237-M

On all fiber repeater modules, the leftmost connector is the RX (Receive) port; the rightmost connector is the TX (Transmit) port.

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

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

)

Rockwell Automation Publication 1786-IN003D-EN-P - April 2011

ControlNet Fiber-optic Ring Repeater Modules 11

TIP

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.

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

IMPORTANT

Dimensions are in mm (in.).

31532-M

107 (4.20)

(2.76)

100 (4.0)

(3.6)

108

(4.25)

Figure 3 - Mounting Dimensions

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

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

+ 28 hidden pages