Planning Installation Of The System Components - Rockwell Automation Allen-Bradley SynchLink 1756-DM Series Design Manual

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Planning Installation of the
System Components
To achieve maximum signal quality and cable protection in a specific
environment with minimum cable usage, follow these steps:
1. Determine how many nodes will be in the SynchLink system.
2. Select the topology.
3. Identify the actual location of the SynchLink nodes, hubs, and
bypass switches (if applicable) using an equipment floor plan.
4. Identify the preliminary cable route. Cable should be readily
accessible when new nodes are added, existing nodes are
moved to new locations, or maintenance is performed.
5. Identify the environmental conditions (e.g. temperature,
humidity, exposure to hazardous chemicals) in the cable route.
6. Determine how to bypass physical and environmental obstacles
(e.g. walkways, induction heat sources, caustic chemical
operations, steam and condensation lines) in the cable route.
7. Determine the best type of cable installation (conduit, raceway,
or equivalent) for all cable segments in the cable route.
8. Calculate the cable segment length. Note that the cable path
distances should be considered in three dimensions. Each
segment must be <300m.
9. Document the cable layout. This document should describe the
network cable system design and installation and should be
maintained throughout the life of the network.
The document should include charts showing routes of all cable
segments, as well as locations of nodes, hubs, and bypass
switches. This information should be detailed enough to trace a
signal path between any two points in the cable system in the
event of a network failure or suspected problem.
10. Calculate the number of required cable system components and
select their types. Refer to Table 7.1 on page 7-2 for a list of
available components.
11. Select the tools and instruments necessary to perform the cable
system installation.
12. Select the proper personnel to perform the cable installation.
The fiber optic cables specified in this manual are flexible type
cables which can be installed by a trained plant electrician.
Publication 1756-TD008A-EN-P - August 2002
6-3

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