General Updates

Major Types of Industrial Control Systems

Tue, 24 Jan 2012 10:14:46 +0000

Major Types of Industrial Control Systems
Industrial control system or ICS comprise of different types of control systems that are currently in operation in various industries. These control systems include PLC, SCADA and DCS and various others:

PLC
They are based on the Boolean logic operations whereas some models use timers and some have continuous control. These devices are computer based and are used to control various process and equipments within a facility. PLCs control the components in the DCS and SCADA systems but they are primary components in smaller control configurations.

DCS
Distributed Control Systems consists of decentralized elements and all the processes are controlled by these elements. Human interaction is minimized so the labor costs and injuries can be reduced.

Embedded Control
In this control system, small components are attached to the industrial computer system with the help of a network and control is exercised.

SCADA
Supervisory Control And Data Acquisition refers to a centralized system and this system is composed of various subsystems like Remote Telemetry Units, Human Machine Interface, Programmable Logic Controller or PLC and Communications.

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Future of Industrial Automation in Manufacturing?

Mon, 23 Jan 2012 05:58:51 +0000

A variety of market trends are driving companies toward the next generation of industrial automation and manufacturing solutions.Technological advancements in process monitoring, control and industrial automation over the past decades have contributed greatly to improve the productivity of virtually all manufacturing industries throughout the world. Many Inc's have developed advanced, easy-to-use machining process simulation and measurement software which is used by a number of companies around the world. So we can see advanced industrial automation in manufacturing in near future. Share your views on Manufacturing automation here.

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what is difference between SCADA vs DCS

Fri, 20 Jan 2012 07:03:37 +0000

The goals of DCS and SCADA are quite different. It is possible for a single system to be capable of performing both DCS and SCADA functions, but few have been designed with this in mind, and therefore they usually fall short somewhere. It has become common for DCS vendors to think they can do SCADA because the system specifications seem so similar, but a few requirements paragraphs about data availability and update processing separates a viable SCADA system from one that would work OK if it weren't for the real world getting in the way.

DCS is process oriented: it looks at the controlled process (the chemical plant or whatever) as the centre of the universe, and it presents data to operators as part of its job. SCADA is data-gathering oriented: the control centre and operators are the centre of its universe. The remote equipment is merely there to collect the data--though it may also do some very complex process control!

A DCS operator station is normally intimately connected with its I/O (through local wiring, FieldBus, networks, etc.). When the DCS operator wants to see information he usually makes a request directly to the field I/O and gets a response. Field events can directly interrupt the system and advise the operator.

SCADA must operate reasonably when field communications have failed. The 'quality' of the data shown to the operator is an important facet of SCADA system operation. SCADA systems often provide special 'event' processing mechanisms to handle conditions that occur between data acquisition periods.

There are many other differences, but they tend to involve a lot of detail. The underlying points are:

SCADA needs to get secure data and control over a potentially slow, unreliable communications medium, and needs to maintain a database of 'last known good values' for prompt operator display. It frequently needs to do event processing and data quality validation. Redundancy is usually handled in a distributed manner.

DCS is always connected to its data source, so it does not need to maintain a database of 'current values'. Redundancy is usually handled by parallel equipment, not by diffusion of information around a distributed database.

These underlying differences prompt a series of design decisions that require a great deal more complexity in a SCADA system database and data-gathering system than is usually found in DCS. DCS systems typically have correspondingly more complexity in their process-control functionality.

The company I work for has both DCS and SCADA products. The operator stations for each product line can use the same UNIX workstations. The systems share data (and thus form a composite SCADA/DCS system), but the SCADA database architecture is significantly different from the DCS data architecture, to the extent that the SCADA master station database looks to the DCS operators very much like some directly-connected DCS I/O. The DCS people are (of course) keen to simplify this to cut costs. However, they do not yet have a viable alternative for the mechanisms required in SCADA systems to have communications redundancy and data redundancy to provide the sort of SCADA system reliability that our customers expect.

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ADVANCED INDUSTRIAL AUTOMATION TRAINING

Fri, 20 Jan 2012 05:24:41 +0000

ADVANCED INDUSTRIAL AUTOMATION TRAINING

The Hands on Practical Training in Industrial Automation Include:
10 Major Brands of Advanced PLC's:

� AllenBradley
� Siemens
� GE-Fanuc
� ABB
� Omron
� Keyence
� Mitsubishi
� LG
� Messung
� Schneider

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Some typical applications in an industrial environment system?

Thu, 19 Jan 2012 11:48:35 +0000

The most common application is for individual machine control but can range to full plant control linking several PLCs together. On a particular machine, speed, options, Safety, operator interface, pneumatic, hydraulic, electricity are some items that may be controlled. PLCs have several different types of input and output cards depending on the type out interface desired. All machines, room temperatures, power monitoring, even security can be joined by linking several PLCs. These can then be displayed and controlled by a single Graphical User Interface (GUI) o a standard Personal Computer.

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Features of ControlLogix Control System

Wed, 18 Jan 2012 12:01:35 +0000

Features

Provides premier high-speed, high-performance, multi-disciplined application control
Provides fully redundant controller architecture with bumpless switchover and high availability
Provides modular network communications
Offers broadcast range of communication and I/O options
Provides time-synchonization capabilities for first fault, process sequencing and other applications
Offers select products that are T�V-certified for use in SIL 2 applications

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what are different types of control systems?

Wed, 18 Jan 2012 11:23:12 +0000

hai friends,

pls tell me,

what are different types of control systems?

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Importance of Supervisory Control and data acquisition Security?

Wed, 18 Jan 2012 06:33:49 +0000

SCADA system includes a user interface which is
usually called Human Machine Interface (HMI). The
HMI of a SCADA system is where data is processed
and presented to be viewed and monitored by a
human operator. This interface usually includes
controls where the individual can interface with the
SCADA system. HMI's are an easy way to standardize
the facilitation of monitoring multiple RTU's or PLC's
(programmable logic controllers)

An HMI is usually linked to the SCADA system's
databases and software programs, to provide trending,
diagnostic data, and management information such as
scheduled maintenance procedures, logistic information,
detailed schematics for a particular sensor or machine,
and expert-system troubleshooting guides.

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PLC

Tue, 17 Jan 2012 12:27:20 +0000

Since PLC (Programmable Logic Controller) was first introduced in 1970, it has been widely applied to various industrial uses such as machine and process controls. Designed with the latest microprocessor and electronic circuitry, today�s compact-size PLCs provide the features of high reliability, high performance, high speed and networking. The use of PLCs in automated production lines enhances system reliability, product quality, information sharing, efficiency and flexibility and thus reduces costs.
PLC-200 is a self-contained trainer which consists of a SIEMENS PLC main unit and commonly used I/O devices for simulation. It offers students excellent theories and wide applications of programmable logic controllers. The trainer enables students to learn step by step from the fundamentals of PLC to more advanced controls used in industry.
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How can i learn plc in online?

Tue, 17 Jan 2012 11:02:57 +0000

hai friends,

How can i learn plc in online?

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