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8/11/2019 Final Project Plc
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PROGRAMMABLE LOGIC CONTROLLER (P.L.C.)
Programmable logiccontroller
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A ro!ect reort on Energ" #a$ing#"%tem &or Tan' Trc' Loaing
Prepared by:-
Shakalya Nag
Soumya Bhattacharya
Shrinwanti Banerjee
Sayari Das
Biswajit Das
Saurav Sarkar
O department: Electronics & Communication Engineering, 2ndYear.Institute of Engineering & Management
To *+om It Ma" Concern,
T-I# I# TO CERTI/ T-AT T-E PRO0ECT *OR1 ENTITLE2 ENERG/ #A3ING #/#TEMOR TAN1 TR4C1 LOA2ING 4#ING PLC I# #4BMITTE2 B/,
Shakalya Nag
Soumya Bhattacharya
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Shrinwanti Banerjee
Sayari Das
Biswajit Das
Saurav Sarkar
O department: Electronic% 5 Commnication Engineering6 7n /ear.In%titte o& Engineering 5 Management
!"#$ "% S'((#SS)'**$ (O+P*#!#D !"# P,O#(! .O,/ 'ND#, O', 0'1D%N(# %ND!"#1, .O,/ 1S S%!1S)%(!O,$2!"1S P,O#(! 1S %BSO*'!#*$ B%S#D 'PON !"#1, .O,/%ND (%,,1#D O'! 'ND#, O', S'P#,&1S1ON %ND 0'1D%N(# D',1N0 !"# S#SS1ON O)
3445-34642
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MR. BI#*A0IT RA4T (PRO0ECT G4I2E)
2ATE,
AC1NO*LE2GEMENT
This is our pleasure and privilege to present to you the report on our project
titled Energy Saving System for Tank Truck Loading Using PLC !e
"ould like to thank all of our professors and our project guide #r $is"ajit
%aut and are grateful to them for all the kno"ledge and guidance they have
given us
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!e thank each other& our teammates& and mem'ers of other teams for all
their support& cooperation and hard "ork This has 'een a great opportunity
for us to discover the values of "orking together
!e are grateful to our friends& teachers and all those "ho have helped us in
every little "ay in reaching our goals and enriching our kno"ledge
This has 'een a "onderful e(perience
Shakalya Nag
Soumya Bhattacharya
Shrinwanti Banerjee
Sayari Das
Biswajit Das
Saurav Sarkar
O department: Electronics & Communication Engineering, 2ndYear.Institute of Engineering & Management
AB#TRACT
A programmable logic controller (PLC) or programmable controller is a digital computer used
for automation of electromechanical processes, such as control of machinery on
factory assembly lines, amusement rides, or lighting fixtures. PLCs are used in
many industries and machines. Unlike generalpurpose computers, the PLC is
designed for multiple inputs and output arrangements, extended temperature
ranges, immunity to electrical noise, and resistance to !ibration and impact.
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Programs to control machine operation are typically stored in batterybacked
or non!olatile memory.
"he #$nergy sa!ing system for tank truck loading% is to regulate the operation of & pumps
depending on pressure re'uirement. A main pump and a secondary pump send fuel to the gantry
station, hich fills trucks ith fuel. hen more trucks fill, the pressure falls, and hen sometrucks lea!e the pressure rises. A P*+ (proportional integrator differential) controller is used to
measure the pressure fluctuations. "he output of the P*+ controller is proportional to the
difference beteen the set !alue (-) and the process !alue (P-). *f the P- is higher than - it
sends a digital output to the PLC, hich sends a digital signal to the -+ (!ariable fre'uency
dri!e) to control the & motors. An analog output from the P*+ also controls the fre'uency of the
-+. "he main pump starts on -+ (for a smooth start). *f the pressure re'uirement increases,
its rpm is increased. hen it reaches its maximum !alue, the secondary motor is started on line.
hen the pressure is too high, the rpm of the main motor is decreased and then the second
motor is turned off.
"he -+ ystem ill ork in con/unction ith an existing +0L tarters of all to pumps. *f the
pressure remains loer than the set !alue e!en after -+ reaches to the maximum speed, then
system shall turn 01 the Pump& through existing +0L starter. "he speed of -+ shall be
regulated to meet the set pressure.
hen all the Pumps are 01 and pressure starts rising abo!e set !alue, -+ speed shall be
reduced to minimum. $!en though, if pressure is abo!e set !alue, then PU2P& shall be turned
0 automatically and pressure shall be regulated by -+ on Pump3. urther as per the
pressure rise, Pump3 shall stop automatically. imilarly if Pump& is started first, it ill start on
-+ and other pumps shall start or stop as per abo!e logic on tar +elta tarter.
*n Case of -+ fault, system shall gi!e trip indication and shall not allo any pump to start. *f
fault is remo!ed and reset, system shall ork as usual. *f fault can not be cleared and -+
remains tripped. User can bypass the -+ by -+ 4ypass 5ey selector sitch and system shall
start orking ith existing +0L 6tardelta tarter.
CONTENT#
Sl.No. TOPIC
PAGE No.
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9. AB#TRACT
(I3)
7. Introction
9 8 99
7.9 *+at i% a PLC: 5 it% brie& +i%tor" 9 8 ;
7.7 Nee &or Atomation
; 8
7.< Programming Langage% >
8 ?
7.@ Laer Logic
? 8
;. Moern Proce%%
9 8 99
;.9 A Ca%e #t"
9
;.7 Laer iagram o& t+e ca%e %t" 99
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@.7 Bloc' 2iagram
9@
@.; Circit 2iagram
9>
@.< Pre$io% Proce%%
9> 8 9?
@.@ 3ario% Motor %tart%
9? 8 9
@.> #"%tem ReDirement%
9
@.? Int 5 Ott Are%%ing
7
@. Laer 2iagram
79
>. Concl%ion
77 8 7;
?. Re&erence%
7