presentation on automation with plc - scada
TRANSCRIPT
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Welcome to Presentation on
Automation with PLC - SCADA
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It is delegation of human control functions to technical equipments for increasing productivity , quality and increase the safety in working condition.
Automation plays an important role in global economy and daily experience.
What Is Automation :
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TOOLS OF AUTOMATION :PLC ( Programmable logic controller)
SCADA (Supervisory control and data acquisition)
HMI( Human machine interface)
DCS (distributed control system)
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Programmable Logic Controllers(PLC)
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WHAT IS PLC :
PLC ( Programmable logic controllers)
PLC is an electronic device which interface between input and output with using software.
It is an example of real time system.
It is microprocessor based industrial computer that perform discrete or sequential logic
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PLC HISTORY : IN 1968 , a group of engineers from general motors developed the concept of plc
MODICON is the first plc.
DICK MORLEY, who worked in MODICON is considered to be the “ father “ of the plc.
PLC’S were designed to replace relay logic system.
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LEADING BRANDS OF PLC :AMERICAN : 1 – ALLEN BRADLEY 2 - TEXAS INSTRUMENTS
EUROPEAN: 1 – SIEMENS 2- FESTO
JAPANESE : 1 - TOSHIBA 2-MITSUBISHI
INDIA: 1- MESSUNG 2 DELTA
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Major Components of a Common PLC
CPU/
POWERSUPPLY
I MN O P D U UT L E
O M U OT DP UU LT E
PROGRAMMING DEVICE
From SENSORSPushbuttons,
contacts,limit switches,
etc.
ToOUTPUT
Solenoids, contactors,
alarmsetc.
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Input Modules Act as interface between real-time
status of process variable and the CPU.
Switches pushbuttons Relays sensorsRTD (Ohm) Thermocouple
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Output Modules
• Act as link between the CPU and the output devices in the field.
Control Valve Motor Solenoid Valves lamps
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PLC SIZE :1. SMALL - it covers units with up to 128 I/O’s and
memories up to 2 Kbytes.
2. MEDIUM - have up to 2048 I/O’s and memories up to 32 Kbytes.
3. LARGE - They have up to 8192 I/O’s and memories up to 750 Kbytes.- can control individual production processes or entire plant.
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INPUT SYMBOL
Normally Open(NO)
Normally Closed(NC)
Power flows through these contacts when they are closed. The normally open (NO) is true when the input or output status bit controlling the contact is 1.The normally closed (NC) is true when the input or output status bit controlling the contact is 0.
OUTPUT SYMBOL:
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Supervisory Control and Data Acquisition(SCADA)
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WHAT IS SCADA:SCADA : SUPERVISORY
CONTROL AND DATA ACQUISITION SCADA is a type of industrial control system used to collect
data from remote location for exercising control.
S: Supervisory (we can see process on the monitor) operator/s, supervisor/s . C: Control (when setup is complete we can also control the process) A: And D: Data ( save data and reports of present and past state ) A: Acquisition
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FeaturesAlarms
Security
Device Connectivity
Dynamic Process Graphics
Real Time & Historical Trends
Recipe Management
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APPLICATION OF SCADA: Water Distribution water treatment Pump stations Traffic signals Fire alarms Chemical Petroleum plants Aerospace Bottling and canning and many more application…….
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THANK YOU…