Rockwell Automation 57C329 Remote I/O Communications, AutoMax - Manual (Page 33)

3Ć7
3.2 Installation Planning
The Remote I/O system is designed to be userĆconstructed and
installed. This enables the system to be tailored to suit specific
needs. Therefore, plan the cable installation carefully before
attempting the actual installation.
The following procedure is recommended in order to design a cable
system that will achieve maximum signal isolation and cable
protection in a specific environment with minimum cable usage.
3.2.1 Installation Planning Procedure
Use the following procedure to plan your installation:
Step 1.
Identify the actual location of the AutoMax racks, Shark
racks, and Remote Heads using the equipment floor plan.
Step 2. Identify the preliminary cable route. Route cables to allow
easy access in the future. Cable should be readily
accessible when new drops are added, existing drops are
moved to new locations, or maintenance is performed.
Step 3. Identify the environmental conditions (electrical noise
levels, temperature, humidity, exposure to hazardous
chemicals, etc.) along the route.
Step 4. Determine how to bypass physical and environmental
obstacles (walkways, induction heat sources, furnaces,
caustic chemicals, steam and condensation lines) along
the route.
Step 5. Calculate the total cable length. Note that the cable path
distances must be considered in three dimensions.
Step 6. Document the cable layout. This document should
describe the Remote I/O cable system design and
installation. It should be maintained throughout the life of
the Remote I/O system. The document should include
charts showing the routes of all cable segments, locations
of cable splices, as well as drop locations and their
addresses. This information should be detailed enough to
trace a signal path between any two points in the cable
system in the event of a Remote I/O system failure.
Step 7. Calculate the number of required cable system
components. Refer to Appendix G for a list of components
recommended by Reliance Electric.
Step 8. Select the tools and instruments necessary to perform the
cable system installation.
Step 9. Select the proper personnel to perform the cable
installation. The RGĆ59/U cable specified in this manual is
a flexibleĆtype cable which can be installed by a trained
plant technician.