Download - SCADA
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Sushant Kumar7th Sem
Electrical 4th Year
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Productivity
QualityLabor Cost
Plant
Total Automation Manufacturing Competitiveness Solution
What is Automation ?
Automation is basically the delegation of human control function to technical equipment for
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History of Automation
Pneumatic Control
Hard wired logic Control
Electronic Control using Logic Gates
Programmable Logic Controller
Manual Control
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PROGRAMMABLE LOGIC
CONTROLLER
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What is PLC ? Advantages of PLC Reliability in operation, Small physical size, Shorter project time,
Speed in Operation, Ease of maintenance/Troubleshooting
Applications : Machine controls, Packaging, Palletizing, Material handling, similar
Sequential task as well as Process control
PLC
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• The Ladder Diagram (LD) programming language originated from the graphical representation used to design an electrical control system
• Finally CPUs were added to take over the function of the logic circuits
• Control decisions accomplished through programming
• Ladder diagram ( LD) was developed to make program creation and maintenance easier
• Computer based graphical representation of wiring diagrams that was easy to understand
• Reduced training and support cost
ANDOR
CPU
Ladder Diagram
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What is Rung?
• A rung of ladder diagram code can contain both input and output instructions
– Input instructions perform a comparison or test and set the rung state based on the outcome
• Normally left justified on the rung– Output instructions examine the rung state and execute some operation or
function
• In some cases output instructions can set the rung state
• Normally right justified on the rung
Input Instruction Output Instruction
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PLC Cycle
Outputs
Machineor
Process
Programmablecontroller
Inputs
Sense the Input Process the Logic Give Output
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Programming of PLC
Start Stop the Motor
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The PLC is programmed interface between the field I/p element like limit switches, sensors, push button and the final control elements like actuator, solenoid/control valves, drives, hooters etc
CPU
Power Supply I/O Modules
Configuration of PLC : Allen Bradley
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Today : Distributed I/O Modules
Distributed I/O modules
PLC
Distributed I/O scanner
Data Communication Bus
• PLC Architecture EvolutionPLC Architecture Evolution
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PLC Signal Flow
Programming Terminal
O:0/7
O:0/7
O:1/5
Output Devices
Output Modules
Processor MemoryInput Module
Input DevicesLadder Program
O:0/7
O:1/5
I:0/6
I:1/4
O:1/5
I:0/6
I:1/4
I:0/6
I:1/4
Data InputImage Table
OutputImage Table
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PLC Types
Nano (Small) Micro (Medium) Large
Basic criteria for PLC Types
Memory Capacity I/O Range Packaging and Cost per Point
Programmable Logic Controllers
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PLC Systems of various vendors
Siemens S5 -110U, 115U, 135U S7 - 200, 300, 400
Allen Bradley Micrologix 1000, 1200, 1500 SLC 5/01, 5/02, 5/03 PLC 5/10, 5/25 and 5/40
Modicon Nano Micro Premium Quantum
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Supervisory control & Data Acquisition (SCADA)
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Supervisory Control and
Data Acquisition
SCADA refers to a system that collects data from various sensors at a factory, plant or in other remote locations and then sends this data to a central computer which then manages and controls the data.
SCADA focuses on gathering and circulating the right amount of system information to the right person or computer within the right amount of time.
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Data Server
SCADA
SupervisoryControl
And DataAcquisition
Graphics and Batch processingArchiving, Logging, Access Control, Alarms
Distributed database
PLC’s
Field Bus
Data Server
Control Programs
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Features of typical SCADA software• Dynamic process graphic• Real-time and Historical trending• Alarms• Recipe Management• Security• Device connectivity• Database connectivity
Supervisory Control & Data Acquisition Software
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Application of SCADA system
• Water Management Systems.• Electric Power.• Traffic Signals.• Mass Transit Systems.• Environmental Control Systems.• Manufacturing Systems.• Transmission, Generation, Distribution system.• Mining plants, • water and electrical utility installations to oil gas plants.
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SCADA in IndustriesSCADA in Industries
Sr no. Vender SACDA Software
1. Wonder ware In Touch 5.0 to 10.0
2. Siemens Ltd. Win CC/ Wincc Flexble
3. Allen Bradley Rs View
4. Intellution Fix DMACS
5. Schneider Factory View & CITEC
6. KIPT ASTRA ( Indian SCADA)
7. Merz Aspic
8 GE Fanuc Cimplicity
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