Schneider Electric / Invensys / Foxboro I/A Series Manual

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®
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I/A Series® Overview
System Overview
Superior architecture, long-lived and sophisticated yet
easy-to-use interface. A vehicle for solving today’s
problems today – and providing for tomorrow's
challenges.
Companies around the world are moving more rapidly
to integrate and automate their manufacturing
operations, due to increased global competition.
I/A Series systems continue to meet day-to-day
needs of these installations and provide the proven
ability to expand along with more demanding
applications. Foxboro continues to develop formidable
additions to its array of I/A Series capabilities. They
represent the ongoing evolution of the world's first
Open Industrial System.
THE SYSTEM FOR TODAY
Solutions for industrial automation must begin with a
foundation that will solve today's problems today, but
will reach out to the future as well. For I/A Series
systems, that foundation begins with system
architecture.
I/A Series systems not only provide flexible,
economical solutions to today's automation problems,
but also provide the architecture for tomorrow's
integrated plant-wide and inter-plant information and
automation systems:
Product Specifications
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• A WIDE RANGE OF SYSTEM SIZES, from small
systems handling local devices to very extensive
systems distributed over local and wide area
networks
• MIX AND MATCH HARDWARE AND
SOFTWARE MODULES to fit the application and
the location
• TRULY DISTRIBUTED, both functionally and
physically
• CONSISTENT, SECURE, FRIENDLY
OPERATOR INTERACTION using high quality,
high resolution graphics and multiple windows
• LOWER TOTAL COST to install, train on,
operate, and maintain
• LONG-LIVED OPEN INDUSTRIAL SYSTEM
ARCHITECTURE AND NETWORKING through
adherence to a number of national and
international hardware, software, and
communication standards
• INTEGRATION WITH OTHER EQUIPMENT
through standard communication networks and
object based communications software
• BACKWARDS COMPATIBILITY to preserve
investments in systems integration and
applications
• THIRD PARTY APPLICATIONS CAPABILITY for
virtually unlimited flexibility in providing additional
functionality
FLEXIBLE AND POWERFUL
Flexibility begins with capabilities that solve problems
today. The I/A Series is designed to address an
exceptionally broad range of application
requirements. Present generation systems are limited
in functionality because of constricting architecture,
and usually consist of a family of devices, each
dedicated to a single automation function such as
logic control or operator interface. In contrast,
I/A Series systemsprovide nodes, made up of
interchangeable hardware and software modules,
with powerful capabilities that can be mixed and
matched to fit numerous manufacturing processes.
Innovative packaging of industrial and field
enclosures allow these nodes to be physically located
where they are needed.
For example, certain nodes on the plant floor might
be configured initially for first-level control functions,
with a separate node in a control room for operator
interface. Later, some of the operator interface
functions could also be installed at one or more of the
control nodes, while supervisory control functions and
password-protected engineering functions could be
added to the operator interface node.
THE SYSTEM FOR TOMORROW
To maintain the continuity of a long-lived architecture,
I/A Series systems are soundly based on
international hardware, software, and communication
standards. Also, Foxboro adheres to industrial and
quality standards such as Factory Mutual, EEC, ISA
and ISO9001. Adherence to standards allows
I/A Series Industrial Software to be transported
between today's compatible hardware, such as
personal computers and workstations. Over 100
intelligent plant devices have been integrated into
I/A Series systems and there are yet more to come as
these devices become available in the future.
Adherence to software standards for operating
systems, languages, and data bases enables
software portability amongst compatible environments
today. It also has proven to allow software to be
preserved as new hardware technology is
incorporated in generations of I/A Series systems.
Newest of these systems additions are the 50 Series
stations which allow direct integration of a wide
variety of information networked systems (i.e.,
TCP/IP, DECnet, NFS, etc.) and devices.
For communications, the I/A Series is built on a solid
foundation: the Open Systems Interconnect (OSI)
standard model, using the communication standards
specified by ISO and IEEE. Rather than using a
proprietary communications network, I/A Series
nodes communicate with each other over single or
hierarchical IEEE 802.4 networks.
As manufacturers and vendors worldwide design and
manufacture products adhering to international
standards, their products can be integrated into
I/A Series nodes by connecting to the same
compatible networks. I/A Series systems provide a
living, working embodiment of the OSI model, and
continue to provide a clear migration path for users of
earlier I/A Series systems and Foxboro SPECTRUM
users.
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Any system must be flexible enough to grow, change,
or be upgraded tomorrow. Because I/A Series
systems adhere to rigorous international standards,
future flexibility is assured. The right architecture
solves today’s problems today but also provides for
the future.
THE I/A SERIES NODE: A BUILDING BLOCK FOR
SUCCESSFUL PROCESS CONTROL
I/A Series system architecture is constructed around
the concept of a node. A node operates
independently, performing automation-related
functions. It may connect to other Foxboro or nonFoxboro nodes via compatible networks.
A node typically comprises a set of book-sized
modules in an Industrial Enclosure together with a
workstation and field devices as shown in Figure 1
and Figure 2. Each module is self-contained and is
designed to perform a general role in the total
system, although its particular function is softwaredefined. The modules are loosely coupled and can be
combined in just about any manner to fit an
application requirement.
Modules: Building Blocks for I/A Series Nodes
There are several types of I/A Series modules. The
most basic type is the processor module. Processor
modules are interconnected by a common rugged
serial bus called a Nodebus. Each module also
connects to peripheral devices or other types of
modules through one or more communication links.
There are four families of processor modules:
• Application Processors, which connect to bulk
storage devices – and optimally to information
networks (Ethernet) to allow bidirectional
information flow
• Workstation Processors, which connect to CRTs,
keyboards, annunciator keyboards, and other
workstation devices – and optimally to
information networks (Ethernet) to allow
X Window displays sourced from other
connected computers
The Fieldbus Module is another major module type.
Fieldbus Modules connect to conventional sensors
and actuators as well as to I/A Series Intelligent Field
Devices.
Modules can perform a variety of functions,
depending on their software. In one case, a control
processor might perform only ladder logic or
regulatory control functions; in another, it might
perform sequence control. One Application Processor
might perform historical data collection and archiving,
and data base management functions; another might
be coordinating other processor modules as part of a
distributed batch control system. Configuration
flexibility provides a broad range of solutions to match
a broad range of needs.
Low Cost
The I/A Series system has been designed for
inexpensive installation, training, operation, and
maintenance. Hardware modules are rugged –
individually encapsulated to withstand the
environmental, electrical, and physical conditions of
industrial environments.
For fast installation and maintenance, each module –
processor module, Fieldbus Module, Intelligent
Transmitter – is intelligent; the modules check each
other continuously as soon as they are plugged in. If
a module should fail, it is specifically identified by
color-coded lights and messages to operating
personnel. When a replacement module is installed, it
is automatically downloaded with appropriate
software.
As plant automation continues at an increased rate
with ever more sophisticated equipment, the cost of
control system downtime becomes more and more
significant. The fault tolerance of I/A Series systems
can be increased by simply adding redundant
hardware modules for critical functions, including LAN
and WAN communications. Network Fault Detection
further enhances reliability and diagnosis. Hardware
redundancy is 100% transparent to software, and
switchover is instantaneous.
• Communications Processors, interfaces, and
gateways, which connect to RS232C/485
devices, Local Area Networks (LANs), Wide Area
Networks (WANs), SPECTRUM and other
networks
• Control Processors, which connect to I/A Series
Fieldbus Modules and devices
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Figure 1. Industrial Enclosures
Figure 2. Typical Nodes on a Network
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I/A Series Nodes Offer Modular Growth
A virtually unlimited range of system sizes is possible
with I/A Series system components. A small system
could consist of a personal workstation by itself, or
one node with just a few modules.
A larger system could be made up of a combination
of nodes connected by an IEEE 802.4 compatible
Carrierband LAN. Figure 3, Figure 4, and Figure 5
show examples of typical system arrangements.
Also, there is a Fieldbus that allows Control
Processors to communicate with remote Fieldbus
Modules and devices for further geographical
distribution of instrumentation devices and functions
into field environments.
A system can have any variety of operator
workstations as necessary. Modular workstation
components such as keyboards, annunciator
keyboards, CRTs, touchscreens, mice, and trackballs
can be mixed and matched as required for each
workstation in the plant.
Friendly and consistent interaction is provided
through windows, menus, and graphics, which can be
configured to provide the most appropriate
environment for the operator. 50 Series workstations
have enhanced graphics and windows capabilities
that allow concurrent access to several applications at
a time. I/A Series workstations are easy to use and
have a flexible hardware and software design so that
they can readily be reconfigured as plant integration
and automation progresses. Figure 6 shows a typical
desktop workstation, while a typical modular
workstation bay is shown on the cover.
Figure 3. Typical I/A Series Personal Workstation for Small Nodebus Control System (PW-NB)
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Figure 4. Typical I/A Series Single Node System
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Figure 5. Typical I/A Series Two Node System With Options
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Figure 6. Typical I/A Series Desktop Workstation (50 Series)
The modular design of the I/A Series system offers an
additional key benefit – it is relatively easy to add on
to an existing system. A very small system, perhaps a
personal workstation with some processor and
Fieldbus Modules, can grow step by step to a plantwide integrated automation and information system.
This offers the flexibility to plan a total installation,
starting small and growing as plant operations require
and budgetary constraints allow.
The I/A Series system is a new generation in Open
Industrial Control System design that provides an
unprecedented ability to meet growing plant
automation requirements. I/A Series systems
continue to be forerunners of the future, always at the
leading edge of capabilities.
The Foxboro Company
33 Commercial Street
Foxboro, Massachusetts 02035-2099
United States of America
Telephone 1-888-FOXBORO
(1-888-369-2676)
Foxboro, I/A Series, and SPECTRUM are registered trademarks of The Foxboro Company.
Ethernet is a trademark of Xerox Corp.
X Window is a product of Massachusetts Institute of Technology.
Copyright 1992 by The Foxboro Company
All rights reserved
MB 021
Printed in U.S.A.
An Invensys company
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0592
Looking for more information?
Visit us on the web at http://www.artisan-scientific.com for more information:
• Price Quotations • Drivers· Technical Specifications. Manuals and Documentation
Artisan Scientific is You~ Source for: Quality New and Certified-Used/Pre:-awned ECJuiflment
• Fast Shipping and DelIve1y
• Tens of Thousands of In-Stock Items
• Equipment Demos
• Hundreds of Manufacturers Supported
• Leasing / Monthly Rentals
Service Center Repairs
Experienced Engineers and Technicians on staff in our
State-of-the-art Full-Service In-House Service Center Facility
• Consignment
InstraView Remote Inspection
Remotely inspect equipment before purchasing with our
Innovative InstraView-website at http://www.instraview.com
We bUy used equipment! We also offer credit for Buy-Backs and Trade-Ins
Sell your excess. underutilized. and idle used equipment. Contact one of our Customer Service Representatives todayl
Talk to a live person: 88EM38-S0URCE fB88-887-68721 I Contact us by email: sales@artisan-scientific.com I Visit our website: http://www.artisan-scientific.com