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Productivity
Quality Labor
Cost
Plant
Total Automation
Manufacturing Competitiveness Solution
What is Automation ?
Automation is basically the delegation of human control function to technical equipment for
HISTORY OF AUTOMATION
Pneumatic Control
Hard wired logic Control
Electronic Control using Logic Gates
Programmable Logic Controller
Manual Control
PROGRAMMABLE LOGIC
CONTROLLER
• 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
• 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 circuitso Control decisions accomplished
through programming
• Ladder diagram ( LD) was developed to make program creation and maintenance easiero Computer based graphical
representation of wiring diagrams that was easy to understand
o Reduced training and support cost
ANDOR
CPU
Ladder Diagram
WHAT IS RUNG?
• A rung of ladder diagram code can contain both input and output instructionso Input instructions perform a comparison or test and set the rung state based
on the outcome Normally left justified on the rung
o 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
PLC CYCLE
• Sense the Input • Process the Logic• Give Output
Outputs
Machineor
Process
Programmablecontroller
Inputs
PROGRAMMING OF PLC
Start Stop the Motor
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
Today : Distributed I/O Modules
Distributed I/O modules
PLC
Distributed I/O scanner
Data Communication Bus
PLC Architecture Evolution
PLC SIGNAL FLOW
Programming Terminal
O:0/7O:0/7
O:1/5
Output Devices
Output Modules
Processor Memory
Input Module
Input Devices
Ladder 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
DataInputImage Table
OutputImage Table
PROGRAMMABLE LOGIC CONTROLLERS
PLC Types
• Nano (Small)• Micro (Medium)• Large
Basic criteria for PLC Types
• Memory Capacity • I/O Range• Packaging and Cost per Point
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
Supervisory control & Data Acquisition (SCADA)
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.
Data Server
SCADA
SupervisoryControl
And DataAcquisition
Graphics and Batch processingArchiving, Logging, Access Control, Alarms
Distributed database
PLC’s
Field Bus
Data Server
Control Programs
SUPERVISORY CONTROL & DATA ACQUISITION SOFTWARE
Features of typical SCADA software
• Dynamic process graphic• Real-time and Historical trending• Alarms• Recipe Management• Security• Device connectivity• Database connectivity
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.
SCADA 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