Supervisory Control & data equiciesion scada

Supervisory Control & Data Acquisition Systems : 

Supervisory Control & Data Acquisition Systems

What is SCADA? : 

What is SCADA? Supervisory Control And Data Acquisition

Why SCADA?: 

Why SCADA? Previously without SCADA software, an industrial process was entirely controlled by PLC, CNC , PID & micro controllers having programmed in certain languages or codes. These codes were either written in assembly language or relay logic without any true animation that would explain the process running. It is always easy to understand the status of the process if it is shown with some animations rather then written codes. Hence SCADA software came to existence and with some exclusive features it became internal part of automation system

S C A D A: 

S C A D A Now a days, the control systems are always coupled with Man Machine Interface or Supervisory Control and Data Acquisition Software, this is because SCADA provide a complete pictorial overview of the entire plant process with necessary monitoring and control facilities at a central location.

Slide 5: 

It works like a supervisor who supervises the entire plant area, it also controls the process as well as it converts the data segments for storing process values i.e. level , pressure , switch positions , density , temperature, messages , etc. From a distant place if we want to run the process i.e. starting , stopping , opening and closing of field instruments as well as logging the various values. SCADA can do for you. SCADA software is to be connected to PLC / PID / DCS systems which in turn are connected to field instruments. S C A D A

Slide 6: 

Hazardous areas , unhygienic places , hilly areas and sea beds where a person can’t be send regularly but process has to be watched continuously or it should be controlled then it can be done using SCADA. Without going to field area if one wants to reset alarms or wants to log a data for a period of time or wants to know status of various units of his company then SCADA is the best option. S C A D A

Slide 7: 

Features of typical SCADA software include , Dynamic process graphic Real-time and Historical trending Alarms Recipe Management Security Device connectivity Script for logic development Database connectivity Networking S C A D A

Dynamic Process Graphics: 

Dynamic Process Graphics Using this feature, one can develop graphics which can resemble the plant. The graphics can include Reactors, valves, pumps, agitators, conveyors as well as other equipment and machinery used in the plant. The status of the equipment running / stopped can be shown using different colours / animation. Typically the SCADA software will have many ready to use symbols for proper representation which can be used in any type of industry.

Real-time & Historical Trends: 

Real-time & Historical Trends This facility is used for representing the data in graphical form. Typically the trends plots the value with reference to the time Real-time data will plot the real-time value for fixed period of time while historical data will have historical data stored value which can be viewed on demand.. Depending upon the storing capacity of the hard-disk one can specify the no of days the data can be stored Some SCADA software show real-time and historical trends in single graphics while fewrs use separate tools.

Alarms: 

Alarms Every plant needs proper monitoring and control of the process parameters. Alarms represent warnings of process conditions that could cause problems, and require an operator response Generally alarms are implemented by using the lamps or hooters in field but in SCADA it can be represented using animation. In many SCADA software, four type of alarm limits are used ie HI, HIHI, LOW, LOW LOW

Recipe Management: 

Recipe Management In many cases we use the same plant for manufacturing different product range. For example an oil blending plant can manufacture power oil, transformer oil, automobile oil. The recipe management is facility used for maintain various recipes of different products and implement it on the process. The recipe can be stored in a single server and it can be fetched by any client server from any area to run the process.

Security: 

Security Every SCADA software has various levels of security for securing the application by avoiding unauthorised access. Depending upon the access level given the operator / engineers is allowed to do the task. In most of the cases, operators are allowed only to operate the plant while maintenance engineers can do the application modifications. The security can be given for individual as well as for groups.

Device Connectivity : 

Device Connectivity Every control hardware has its own communication protocol for communicating with different hadrware / software. Some of the leading communication protocol include Modbus , Profibus , Ethernet, Dh +, DH 485, Devicenet , Control net. The SCADA software needs device driver software for communication with PLC or other control hardware. More the driver software available better is the device connectivity. Most of the SCADA software used in the industry have connectivity with most of the leading control system.

Database Connectivity: 

Database Connectivity In many plants, it is important to download the real-time information to the MIS. In this case the database connectivity is must. Many SCADA software don’t have their own database. Hence for storage and reporting they use third party database like MS Access or SQL

Scripts: 

Scripts Script is a way of writing logic in SCADA software. Every SCADA software has its own instructions and way of writing program. Using scripts, one can develop complex applications. You can create your own functions to suit the process requirement. execution. Various types of scripts make project execution simpler for programmer.

Networking: 

Networking In many application, we have to use more than one SCADA software / operator stations. This can be achieved by taking the SCADA node on network. In many cases Ethernet TCP/IP is commonly used for networking. In certain cases the SCADA software use propriety networking protocols for networking.

Type of SCADA software and Licensing: 

Type of SCADA software and Licensing Typically the SCADA software are sold with Functionality ie Development and Runtime or Runtime only No of tags supported Some of the SCADA software use Hardware Lock ( hardware key to be attached on paralle l port), while other use software license ie software key to be installed on the hard disk

Industry Capabilities: 

Industry Capabilities

Local Control Stations (OI and HMI) : 

Local Control Stations (OI and HMI)

Evolution of SCADA: 

Evolution of SCADA To start with the SCADA software were used for monitor and controlling the parameters locally.

Evolution of SCADA: 

Evolution of SCADA Subsequently the modems were used the monitor the data over a distance

Advanced Network Arrangement: 

Advanced Network Arrangement The latest advancement in the SCADA technology includes the data monitoring on wide area network using modems, Ethernet tcp/ip as well as GPS system

Some of the Leading SCADA Software: 

Some of the Leading SCADA Software Wonderware : InTouch Intellution : iFix (Earlier Fix DMACS) Allen Bradley : RS View (Earlier Control View) Siemens : WinCC (Earlier Coros LS /B ) GE Fanuc : Cimplicity Indusoft : I W S Movicon : Progea

Wireless Industrial Applications: 

Wireless Industrial Applications Wireless Ethernet, Self-Powered Wireless Sensors RFID Wireless and RFID technologies are finding extensive usage in a field of industrial automation

Typical Industry Application : 

Typical Industry Application Apart from manufacturing process, SCADA software are being used very effectively in water supply and management. The functionality includes.

Typical Industry Application : 

Typical Industry Application Control of Substations Control of auto-reclosers Load shedding Metering Downtime analysis Despatch and assessment Electricity In electricity, the functionality includes.

Typical Industry Application : 

Typical Industry Application Chemical Plants

Gas and Water Pipelines: 

Gas and Water Pipelines Typical Industry Application

Reservoir Management: 

Reservoir Management Typical Industry Application