H0NEYWELL 51304644-125 Interface module

Functional Description

All Controllers

The Honeywell HC900 Process 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 HC900 Process 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 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.    Please refer to Ethernet Devices/Considerations Section in this manual for further information.    The

figures in this manual assume the firewall is installed properly above the controller's Ethernet connection(s) E1 and

E2.

900C51 – 00XX-00

900C52 – 00XX-00

900C31 – 00XX-00

900C32 – 00XX-00

900C71 – 00XX-00

900C72 – 00XX-00

900C71R – 0000-XX

900C72R – 0000-XX

900RSM – 0001

900C73R – 0000-XX

900C53 – 00XX-00

900C30-0360-00

900C50-0360-00

900C70-0360-00

900C75-0360-00

900S75-0360-00

900S50-0360-00

900C30S - 0360-00

900C50S - 0360-00

900C70S - 0360-00

900C75S-0360-00

900S50S - 0360-00

900S75S-0360-00

The HC900 Controller design enables users and OEMs who are adept in system integration to assemble a system

that fits a broad range of requirements.    Any configuration can be readily modified or expanded as requirements

dictate.    In initial configuration and in subsequent modifications, the HC900 Controller affords an optimum balance

of performance and economy.

Configurations such as those shown in Figure 1 and in Figure 2. as well as many variations, can be assembled from

modular components.    Many of the components are available from Honeywell, and some are available from third

party suppliers.    These modular components are available in any quantity and mix that make the most sense for a

given application.

As indicated in Figure 3. the HC900 Controller includes provisions for communication via Ethernet with host

systems such as the Honeywell Experion HMI and other HMI software that supports Ethernet Modbus/TCP

protocol.    Also, the communication structure of the HC900 Controller enables remote placement of input/output

components, allowing significant economies in cabling and wiring.

 Redundant CPUs - Redundancy is provided by two C75 CPUs operating in a controller rack;   this rack has no

I/O.   A Redundancy switch module (RSM) sits between the CPUs.

 Redundant CPU Power - Two power supplies, P01 and P02 one for each C75 CPU.   Model numbers are 900P01

0101. 900P01-0201. 900P02-0101. 900P02-0201

 Redundant CPU-I/O connection – Each CPU has its own 100 base-T Ethernet physical communication link with

one or more racks of I/O.   Multiple I/O racks require Ethernet switches.

 I/O racks – 5 racks shown, top to bottom: 4-slot w/1 power supply, 8-slot w/1 power supply, 12-slot w/1 power

supply, 8-slot w/redundant power supplies, 12-slot w/redundant power supplies.   A Power Status Module (PSM) is

required with redundant power supplies.   High and low capacity power supplies are available.

 Dual Networks for Host communications - Dual Networks for Host communications are provided on the C75 CPU.

Both network ports are continuously active on the Lead controller.   The network ports on the Reserve CPU are not

available for external communications.   Experion HS and the 900 Control Station (15 inch model) support Dual

Ethernet communications and automatically transfer communications to the opposite E1/E2 port during a network

failure.   Connections to these ports are to be considered part of the control network layer and as such care must be

taken to reduce exposure to uncontrolled/ unknown network communications.   A properly configured firewall such as

the MOXA EDR-810 is recommended to help mitigate the exposure.

 Scanner 2 module – has 2 ports, one for each CPU connection to I/O.   This IO network between the controllers

and scanners is considered proprietary with no other Ethernet traffic.