MEASUREMENTS and CONTROL LAB. 0908448 CONTROL EXPERIMENTS.
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Transcript of MEASUREMENTS and CONTROL LAB. 0908448 CONTROL EXPERIMENTS.
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MEASUREMENTS and MEASUREMENTS and CONTROL CONTROL
LAB. LAB. 09084480908448
CONTROL EXPERIMENTS
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List of ExperimentsList of Experiments
1. DC Servo Motor Control.2. Twin Rotor Control.3. Pneumatic and Electro-
Pneumatic System Control.4. Programmable logic Controllers
PLCs.5. System Identification.
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Introduction to PLC and Introduction to PLC and Ladder LogicLadder LogicOBJECTIVES:
The aim of this experiment is to familiarize the student with Programmable Logic Controllers (PLC) as hardware and the software used to program it, also to familiarize him with programming PLC using ladder logic diagrams.
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Elettronica Veneta, Elettronica Veneta, Programmable Logic Programmable Logic Controller Trainer.Controller Trainer.
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PLC Brands:PLC Brands:SiemensAllen-BradleyABBMitsubishiOmronHoneywellSchneider ElectricGeneral Electric
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In this experiment we will In this experiment we will use:use:1. PLC SIEMENS SIMANTIC S7-2002. Digital expansion EM 2223. Analog input/output module EM
235
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PLC SIEMENS S7-200PLC SIEMENS S7-200Digital Inputs: I0.0-I0.7 and I1.0-I1.5Digital Outputs: Q0.0-Q0.7 and Q1.0-Q1.1Internal relays 256: M0.0-M31.7Counters/Timers 256/256: C0-C255, T0-T255Number of expansion modules 7 modules,
types of expansion modules: ◦ Discrete Input / Output◦ Analog Input / Output◦ RTD / Thermocouple input◦ PROFIBUS-DP slave◦ AS-Interface master◦ Ethernet◦ Internet◦ Modem◦ Positioning
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Expansion ModulesExpansion ModulesDigital expansion EM 222
◦8 Points, 24 VDC Digital Output Module.Analog input/output module
EM 235◦4 AI / 1 AO 12 bit
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LADDER LOGICLADDER LOGICIt is a very popular graphical language for programming Programmable Logic Controllers (PLCs), Ladder Logic based on drawing electrical logic schematics to implement Boolean expressions. The Ladder Diagrams consists of graphic symbols, representing logic expressions, and contacts and coils, representing outputs.
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Rungs and RailsRungs and Rails
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Normally Open ContactNormally Open Contact
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Normally Closed Normally Closed ContactContact
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OR GateOR Gate
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AND GateAND Gate
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NOT GateNOT Gate
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LatchingLatching
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Programming the PLCProgramming the PLCTo program the PLC, we will use the STEP7-Micro/WIN software
We can program the PLC using:◦Ladder Diagram◦If statements◦Block diagrams
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OUTPUT RELAYOUTPUT RELAY
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MOTOR CONTROL MOTOR CONTROL CIRCUITSCIRCUITS
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MOTOR CONTROL MOTOR CONTROL CIRCUITSCIRCUITS
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TIMERSTIMERSOn-Delay Timer
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TIMERSTIMERSOff-Delay Timer
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TIMERSTIMERS
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CountersCountersCount Up CounterCount Down Counter
◦Counter ranges:Cxxx=C0 through C255
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THE ENDTHE END