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Transcript of Automation-PLC
SUBMITTED BY:-PALLAVI PANDEYTHAPAR UNIVERSITY
SIX WEEKS TRAINING
INDUSTRIALAUTOMATION
HISTORY OF INDUSTRIAL AUTOMATION
Manual Control
Pneumatic Control Electronic
System
Hard wired logic
System
PLC
AUTOMATION DEPENDS ON:-
INDUSTRIAL AUTOMATION
SOFTWARE CONTROLSCADA
HARDWARE CONTROL
PLC/DCSFIELD
INSTRUMENTSMOTOR,RELAYS,
SENSORS
REAL TIME SYSTEM
Monitors input and take decision based on its program and control output to
automate a process.
PROGRAMMABLE LOGIC CONTROLLER(PLC)
INPUT PLC OUTPUT
IMPORTANCE OF PLC:-Large number of input & output ports are available.PLC’S can withstand vibration, temperature, humidity & noise.It is programmed using Ladder diagrams and no programming
language is required.Large current driving ability- 24VDC whereas 5VDC is
available in microcontroller.Already interfaced I/P & O/P are available inside a PLC.Easier and faster to make changes.Trouble shooting aids make programming easier and reduce
downtime.Reliable components make these likely to operate for years
before failure.
PLC COMPONENTS:-POWER SUPPLY:-24VDC,220 V AC, 110VACCOMMUNICATION-RS 232,DH(485)
DIRECT40 Feet max.Ex- RS232
INDIRECT4000 FeetEx- RS232-RS485
INPUT MODULEDIGITAL INPUTSL:- Switches,Push ButtonsANALOG INPUTS:- 4-20mA,0-10V Pressure, Temprature etc.
PLC
OUTPUT MODULE:- i) DIGITAL OUTPUT:- Lamps, Alarms etc. ii) ANALOG OUTPUT:-Control valve, Drives etc.PROCESSOR:- CPU i)User Memory ii)Storage Memory:- RAM, ROM ,EEPROM etc.TYPES OF PLC:- i) Compact ii) Modular
Leading Brands Of PLC
AMERICAN 1. Allen Bradley
2. Gould Modicon
3. Texas Instruments
4. General Electric
5. Westinghouse
6. Cutter Hammer
7. Square D
EUROPEAN 1. Siemens
2. Klockner & Mouller
3. Festo
4. Telemechanique
Languages Used in PLCLadder LogicFBD-Functional Block DiagramSFC-Sequence Flow ChartSTC-Structural Text Language IL-Instruction List
PHASE 2Program
Execution
PHASE 3Diagnostics/
Comm
PHASE 4Output
Scan
PHASE 1Read Inputs
Scan
By ROCKWELL AUTOMATION(USA Company)Communication Software :-RS Linx Classic
Programming Software:- RS Linx Micro English
PLC Used – Micrologix 1000
PICOMICROSLCPLCLogix Sereis
ALLEN BRADLY
TYPES
PLC PROGRAMMING-LADDER LOGIC
NORMALLY OPEN(NO)
NORMALLY CLOSE(NC) OUTPU
TRUNG IN PARALLEL
ADRESSING MODES:-
MODULAR PLC
COMPACT PLC
File type File number : Slot number . Word Number/ Bit No.
ANALOG
INPUT- I1:3.0OUTPUT- O0:3.0
INPUT- I1:0.0OUTPUT- O0:0.0
DIGITAL
INPUT- I1:1.0/2OUTPUT- O0:1.0/1
INPUT- I1:0.0/0OUTPUT- O0:0.0/1
ADVANCE INSTRUCTIONS :-i) Latch Unlatch Commandii) One Shot Rise(OSR)iii) Compute/Math (Add, Sub, Math, Divide, SQR, NEG, TOD, FRD)iv) Move Logical (MVM)v) Gates (AND, OR, NOT, EXOR)vi) Program Control (JMP & LBL)vii) Temporary End (TND)viii) Compare (MOV, NEQ, LES, GRT, LEQ, GRQ)ix) Timer/ Counters (UP, DOWN, TON, TOFF, RES)
AUTOMATIC PARKING :-
PARKING Max. 10 Cars
IN OUT
Design an automatic parking place having a maximum seats for 10 cars. The gate should automatically open if there are less than 10 cars in the parking but it should not open if space is full.
INTERLOCKING
A1
A2
A1
A2
C1
C2
START 1 START 2
STOP 1
STOP 2
AUX NC2
AUX NC1
AUX NO1
AUX NO2
Star Delta Starter- Control Circuit
PROJECT
SEQUENCE CONTROL OF MOTORS
AIM of the Project:- To obtain the motors working in a particular pattern/Logic sequence.
Apparatus Used:- PLC (Allen Bradley) MicroLogix1000, Power Supply, Wires, Electromagnetic Relay.
DIAGRAM:- EM RELAY
M1M2M3M4
MOTORS
L
N
NO 1
NO 2
NO 3
NO 4
M1
M2
M3
M4
0
I/0
I/3
I/2
I/1
V DCDCCOM
O/0
O/1
O/2
O/3
24V DC
24V DC
O1
O2
O3
O4
WIRING OF PLC
PLC
CONSISTS OF THREE PARTS:-
1) POWER SUPPLY:-For converting 220V AC into 24V DC ( required by the PLC )
2) RELAY :-For supplying 220V AC to the LED or Motor.
3) PLC :- It works as controller which controls the instruments according
to the programming done by the user. It acts as the main brain or controller. The PLC used here is MicroLogix1000. The sequence of motors is
1 0 1 11 1 1 01 1 1 10 1 1 1
USES OF SEQUECE CONTROL OF MOTORS:-i) Used in Food Factory.ii) Used in manufacturing Plants.iii) Used in Construction Work.
N7 :0– Integer acts as source.N7:9- Used for masking.N7:10- Used for storing the result.
ROLE OF PLC ININSTRUMENTATION & CONTROLInstrumentation and control engineering is about measurement and
control. It deals with development of new control devices, manufacturing facilities and plants.
Its about gathering data & changing field parameters to obtain the best possible output.
Instrumentation and Control is about MEASUREMENT, CONTROL AND AUTOMATION.
PLC is actually the best controller.
Ex-PLC IN PROCESS CONTROL:-
Time in Minutes
Temp.
rise
Holding Temp.
rise
Holding
PLC Controlled Process
Ideal Process
Process End
Process Start
Y2
Y1
0 X1X2 X3 X4Time in Minutes
0 X1X2 X3 X4
Y2
Temp.
rise
Holding Temp.
rise
Holding
Process End
Conventional Process
Ideal Process
Tem
pera
ture
(in
Deg
.C.)
Process Start
Y1