60 Rockwell Automation Publication ICSTT-RM448M-EN-P - February 2021
Chapter 4 Before You Begin
The electrical characteristics of the I/O bus interface limit the maximum
possible length of either of the two I/O buses (the combination of I/O base
units and expansion cables) to 8 meters (26.24 ft.).
Adding Field Cable Management
The field, power and other system wiring will be connected to terminals along
the top of the base units. It is recommended a length of cable trunking or the
equivalent be put above each set of base units, for cable management.
Figure 13 - Field Wiring Connections
System Power
Requirements
A controller's system power should be supplied from two different 24 Vdc
(Nominal) power supplies with a common return path; that is, the 0 V return
will be the same between the power feeds. Each controller also requires an
external field power source for the field loops.
NOTE The T9310 Expansion Cable is 2 m (6.56 ft.).
WARNING: A controller system must be installed with a power network that
is designed to meet over voltage Category II
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