Components and Architecture - Overview
Revision 6 HC900 Process & Safety Controller User and Installation Manual 17
21 April 2017
Components and Architecture
Overview
This section provides a description of each of the major components that can be included in an HC900 Controller
physical configuration, and indicates some of the methods by which they can be combined.
Components
The Honeywell HC900 Process Controller includes a set of hardware modules that can be combined and configured
as required for a wide range of small to medium process control applications.
Some of the modules are required in all configurations. Others are optional; they are selected as appropriate to
provide optional functions and/or to "size" the system, either in initial planning, or in modifying and/or expanding
the system to meet changing requirements.
An HC900 Controller configuration with multiple controllers is illustrated in Figure 4.
This illustration includes key-numbers that identify components that are described in Table 2
CAUTION
Communications lockout is possible in high network traffic conditions.
Extraneous traffic is possible when sharing bandwidth with other devices. We recommend putting the
controller on a private network segment. Failure to do so could, in high traffic cases, result in
communications lockout requiring the controller to be power-cycled.
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