Functional Description; Figure 1 - Small Controledge Hc900 Controller Configuration - Honeywell 900U02-0100 User And Installation Manual

Introduction
1.3.

Functional Description

All Controllers
The Honeywell ControlEdge HC900 Controller is an integrated loop and logic controller that is designed
specifically for small-and medium-scale unit operations
It comprises a set of hardware and software modules that can be assembled to satisfy any of a broad range
of process control applications. The ControlEdge HC900 Controller can consist of a single rack, as
indicated in Figure 1, or can be can be networked with other controllers via Ethernet links to expand the
dimensions of control over a wider range of unit processes, as indicated in Figure 2.
Although the ControlEdge HC900 E1/E2 ports provide protection against Cyber-security/DOS type
attacks, additional protection is required for safety applications using a firewall device configured to
prevent uncontrolled messages into the controller. The figures in this manual assume the firewall is
installed properly above the controller's Ethernet connection(s) E1 and E2.
Figure 1 – Small ControlEdge HC900 Controller Configuration
8 ControlEdge HC900 Process & Safety Controller User and Installation Manual Revision 10
May 2019