nanault ens haec quoque sed pernbscura taina

PLC eJY ^control vkyfwmESpfrsdK;&Sdygw,f/ Machine control eJY process control vkdY ac:

ygw,f/

Machine control qkdwmu pufudkxdef;ausmif;ay;wm jzpfygw,f/ ykvif;xJ t&nf jznfhwJhpuf filling machine ukd ^control vkyfwmrsdK;? ykvif;awGudk 6 ykvif; 1 xkyf?

xkyfwJhpuf packaging machine ukd ^control vkyfwmrsdK;? yvyfpwpfypönf;awG yHkoGif;?

xkwfvkyfwJhpuf plastic injection molding machine ukd ^control vkyfwmrsdK;awGukd ^machine

control vdkY ac:wm jzpfygw,f/

Process control qkdwmrSmygwJh ^process qdkwmu t&m0w¬Kwpfckudk ½kyfqif; oP²mef tm;jzpfap? ^physically 'grSr[kwf? "gwkzGJUpnf;yHktm;jzpfap? chemically ajymif;vJ atmif vkyfaqmifwmukd ^process vkdY ac:ygw,f/

Oyrm? *sHKrIHUukd aygifrkefYjzpfatmifvkyfwm ukdvnf; ^process vkdY ac:ygw,f/ BuHuae oMum;jzpfatmifvkyfwm ukdvnf; ^process vkdY ac:ygw,f/ acsmif;a&? jrpfa&ukd oHk;a&?

aomufa&jzpfatmifvkyfwm udkvnf; ^process vkdY ac:ygw,f/ a&&,f? av&,f? obm0

"gwfaiGU&,f oHk;rsdK;udk aygif;pyfNyD; ^Urea "gwfajrMoZm jzpfatmifvkyfwm ukdvnf; ^process vkdY ac:ygw,f/ ukefxkwfenf;pOfvkdY ajymvkdY&r,fxifygw,f/ tJ'Dvkd ukefxkwfvkyf wJh

process ukd ^control vkyfwmukd process control vkdY ac:wmjzpfygw,f/

PLC qkdwm[m Machine control eJY Process control pepfawGrSm oHk;zkdY jyKvkyfxm;wJh

Special Computer jzpfygw,f/ ñTefMum;csuf ^Program awG a&;oGif;NyD; ckdif;apvkdY &wJh

Industrial (Computer ) Controller jzpfygw,f/

Control vkyfw,fqkdwm &nfrSef;csuf NyD;ajrmufatmif xdef;ausmif;ay;wm jzpfyg w,f/ xdef;ausmif;wJh tvkyfukd vkyfEkdifzdkY Controller wkdif;ukd ^power ay;oGif;&ygw,f/ ^PLC udkvnf; ^power ay;oGif;&ygw,f/

ñTefMum;xm;wJh ñTefMum;csufawGudk odrf;xm;zkdY ^PLC rSm ^memory yg&Sd&ygw,f/

ckdif;xm;wJh ñTefMum;csufawGukd ukdifwG,faqmif&GufwJh A[kduGyfuJa&;ykdif; CPU (central processing unit) vnf; ^PLC rSm yg&Sd&ygw,f/ ^Signal t0ifykdif; ^(input ykdif;⁾ eJY ^signal txGufykdif; ^(output ykdif;⁾ wkdYvnf; ^PLC rSm yg&Sd&ygw,f/

Block diagram of PLC

PLC Hardware

PLC rSm trsdK;tpm; ajrmufjrm;pGm &SdMuygw,f/ b,f ^PLC rSmyJjzpfjzpf ^wire qufvdkY

&wJh ikwf ^terminal awG yg&SdMuygw,f/ tJ'gawGuawmh

Power supply terminal, Input terminal,

Output terminal eJY

Programming Port wdkY jzpfMuygw,f/

PLC qdkwmu ^program a&;oGif;xm;rS cdkif;apvdkY&wJh Controller jzpfygw,f/

PLC wpfvHk;udk awGUwJhtcg b,fupNyD; odatmifvkyf&rvJqdkwmudk tvG,frSwfvdkY

&atmif azmfjyygr,f/

PLC qdkwm ^Computer wpfrsdK;jzpfwmrdkYvdkY ^PLC rSm ^hardware a&m? ^software yg? yg&Sdyg w,f/

PS & I/O; Type & Size vdkY rSwfxm;yg/

PLC &JU ^hardware udk avhvmwJhtcg PS & I/O wdkY&JU ^type eJY ^size udk odatmif t&if vkyf&rSm jzpfygw,f/

PS &JU ^type qdkwm tJ'D ^PLC udk ^{AC power} ay;&rSmvm;? ^{DC power} ay;&rSmvm;?

qdkwmudk cGJjcm;odzdkY ajymwmjzpfygw,f/

PLC &JU Power supply terminal rSm AC voltage ay;&wJh ^PLC &Sdovdk? DC voltage

ay;&wJh ^PLC vnf; &Sdygw,f/

PS &JU ^size qdkwmuawmh ^{AC power} qdk&if ^220V vm;? ^100V vm;? DC power

qdk&if ^24V vm;? qdkwm cGJjcm;odzdkY ajymwm jzpfygw,f/

AC power ay;&wJh ^PLC awGrSm ^100VAC udk power supply tjzpf qufay;&wJh ^PLC u wpfrsdK;? ^220VAC udk power supply tjzpfqufoG,fay;&wJh ^PLC u wpfrsdK;? ^100VAC a&m? ^220VAC yg? 2rsdK;pvHk; qufoG,fay;vdkY&wJh ^PLC u wpfrsdK;? qdkNyD; oHk;rsdK;oHk;pm; &Sdyg w,f/

DC power ay;&wJh ^PLC rSmawmh ^24VDC udk power supply tjzpf qufoG,f ay;&wJh ^PLC u tawGU&trsm;qHk;jzpfygw,f/

I/O qdkwm uawmh ^PLC &JU ^Input eJY ^Output awGudk ajymwm jzpfygw,f/ ^PLC &JU ^I/O

signal [m Discrete I/O signal eJY Analog I/O signal qdkNyD; ^type 2rsdK;? &Sdygw,f/ 'gaMumifh

Discrete Input vm;? Discrete Output vm;? Analog Input vm;? Analog Output vm;? 

qdkwmudk cGJjcm;NyD;odatmif t&ifvkyf&ygr,f/ Discrete I/O udk Digital I/O vkdYvnf; ac:Mu ygw,f/

Discrete Input xJay;oGif;&r,fh ^signal u ^{AC signal} vm;? ^{DC signal} vm;? qdkwmu

Input &JU ^type jzpfyg w,f/ AC220V signal vm;? AC100V signal vm;? DC24V signal vm;?

qdkwmu ^Input &JU ^size jzpfygw,f/

Discrete Output rSxGufvmr,fh ^signal u Relay Output vm;? TRIAC Output vm;?

Transistor Output vm;? qdkwmawGu ^Output &JU ^type awGjzpfMuNyD;? ^Relay &JU Output rating, TRIAC &JU Output rating, Transistor &JU Output rating awGu ^Output &JU ^size awG jzpfMuygw,f/ Transistor Output jzpfcJh&if ^PNP vm;? ^NPN vm;? cGJjcm;odzdkY vdktyfygw,f/

Sensor awGuay;ydkYwJh ^signal awGudk? ^PLC &JU input terminal awGu vufcH&,lygw,f/

Input terminal rSm qufoG,fvdkY&wJh ^devices awGudk Input Field Devices vdkY ac:ygw,f/

Output terminal rSm qufoG,fvdkY&wJh ^devices awGudk Output Field Devices vdkY ac:yg w,f/ ^PLC &JU output terminal u xkwfay;wJh ^signal awGudk? Output Field Devices awGu vufcH&,lygw,f/ Output Field Devices awGudk ^Actuators awGvdkYvnf; ac:Muygw,f/

Analog I/O &JU ^type qdkwmu ^current vm;? ^voltage vm;? cGJjcm;odzdkY jzpfygw,f/

Analog I/O &JU ^size qdkwmuawmh ^signal &JU ^range udk ajymwmjzpfygw,f/

Oyrm? 0 to 20mA, 4 to 20mA, 0 to 5V, 0 to 10V pwJU ^{dc signal} awGjzpfMuygw,f/

'DpmtkyfrSm discrete I/O signal taMumif;ukdom a&;om;azmfjyrSm jzpfygw,f/

Programming Port uawmh ^data awG t0iftxGufvkyfwmjzpfvdkY ^Port vdkY ac:wJh ikwf

terminal jzpfygw,f/ ^PLC xJudk ^program a&;xnfhwJhtcg? ^Computer eJY qufoG,f&wJh ^port jzpfvdkYrdkY Programming Port vdkY ac:wmjzpfygw,f/

Programming cable udk ^PLC xkwfvkyfwJh ^OEM qDu? 0,f,ltoHk;jyKMu&ygw,f/ ^PLC eJY

Computer udk Programming cable eJY qufoG,fNyD; ^PLC xJ a&;xnfhwJh ^Program udk ^User

Program vdkY ac:ygw,f/ Application Program vdkYvnf; ac:ygw,f/

PLC wdkif;rSmryg&dSbJ? tcsdKU ^PLC awGrSmom ygavh&SdwJh ^terminal awGuawmh ^I/O

expansion terminal eJY Communication port wdkY jzpfMuygw,f/ ^Input eJY ^Output udk wdk;csJU wwfqifcsif&if I/O expansion port yg&dSrS wdk;csJUwwfqifvdkY &ygw,f/ Communication port

uawmh ^PLC eJY ^HMI qufoG,fzdkY? ^PLC tcsif;csif; qufoG,fzdkY? toHk;jyK&wmjzpfygw,f/

PLC awGrSm RS-232 port eJY RS-485 port wdkY ygavh&SdMuygw,f/

ckacwfrSm Ethernet port ygwJh ^PLC awGudk toHk;jyKaeMuNyD jzpfygw,f/

PLC wdkif;rSmyg0ifwJh tajccHtydkif; 5 ykdif; uawmh yHkrSmjyxm;wJhtwdkif;

(1) Power Supply ykdif;?

(2) ^CPU ykdif;?

(3) ^Memory ykdif;?

(4) ^Input ykdif;? eJY

(5) ^Output ykdif;?wkdY jzpfMuygw,f/

'Dtydkif; 5ydkif;udk wpfpkwpfpnf;xJ wnfaqmufxm;wJh ^PLC rsdK;udk Integrated PLC,

'grSr[kwf Compact PLC vdkY ac:ygw,f/ Compact PLC rSm yg&SdwJh Power supply ydkif;?

CPU ydkif;? ^Input ydkif;? pwmawGudk wpfydkif;csif;pD jzKwfvdkY? wyfvdkY? r&ygbl;/

tpdwftydkif; wpfckcsif;pD jzKwfvdkY? wyfvdkY? &wJh ^PLC rsdK;udk Modular PLC vdkY ac:yg w,f/ Modular PLC qdkwmu Power supply module u wpfck? ^CPU eJY ^Memory udk aygif;xm;wJh CPU module u wpfck? Input module u wpfck? Output module u wpfck? 'D 4ck udk atmufcHjym; backplane (baseplate) ay:rSm wyfqifvdkufawmhrS ^PLC wpfvHk; jzpfvm ygw,f/

Power Supply

ykdif;

Power Supply ykdif; qkdwmu ^PLC xJudk tjyifuaeay;oGif;wJh ^220VAC 'grSr[kwf

24VDC udk ajymwmr[kwfygbl;/ ^PLC xJrSm xnfhoGif;wnfaqmufxm;wJh ^power ykdif;ukd ajymwm jzpfygw,f/ ^PLC wkdif;ukd vQyfppf"gwftm;ay;oGif;&ygw,f/

AC power ay;oGif;&wJh ^PLC u wpfrsdK;? ^{DC power} ay;oGif;&wJh ^PLC u wpfrsdK;?

qkdNyD; ESpfrsdK;ESpfpm; &Sdygw,f/

AC power ay;&wJh ^PLC rSmvnf; ^100VAC eJY ^220VAC qkdNyD; ESpfrsdK; uGJjym;ygao;

w,f/

DC power ay;&wJh ^PLC rSmawmh ^{24 VDC} ay;&wJh ^PLC u tawGU&rsm;ygw,f/

jyifyuae ^AC ay;oGif;onfjzpfap? ^DC ay;oGif;onfjzpfap? ay;oGif;vkdufwJh vQyfppf

power ukd ^PLC xJrSm&SdwJh ^CPU wkdY? ^Memory wdkY?twGuf oifhawmfwJh DC Voltage jzpfatmif

PLC xJu Power Supply ykdif;u aqmif&Gufay;ygw,f/

PLC xJudk Power supply terminal uae? pD;0ifwJYvQyfppf ^current eJY ^CPU xJ, ^I/O

interface xJ? pD;wJYvQyfppf ^current wkdYudk woD;wjcm;pDjzpfatmif vkyfay;wJYtvkyf? ^galvanic

isolation udkvnf; Power Supply ykdif;u vkyfay;ygw,f/ 'g[m ^PLC xJrSmygwJY ^Power

Supplyydkif;&JUtvkyf ^function 2ck? jzpfygw,f/

wu,fvkdY? ^100VAC om ay;&r,fh ^PLC udk rSm;NyD; ^220VAC ay;cJhrd&if? 'grSr[kwf

24VDC om ay;&r,fh ^PLC udk ^220VAC rSm;ay;cJhrd&if? ^PLC xJu Power Supply ykdif;yJ ysufpD;oGm;ygw,f/ ^CPU wkdY? ^Memory wkdYukd rxdcdkufrysufpD; ap&atmif Power Supply

ykdif;u taocHumuG,fay;xm;ygw,f/

'DvkdumuG,fay;wmudk ^isolation vkdY ac:wm jzpfygw,f/