hide Trolano

CPU (Central Processing Unit) udk microprocessor eJY zGJUpnf; wnfaqmufxm;ygw,f/

CPU eJY ^Memory uawmh tNrJyJ wGJNyD;? tvkyfvkyfygw,f/ User program udk ^Memory xJrSm odrf;xm;ygw,f/ ^PLC udk ^RUN vdkufawmhrS ^memory xJrSma&;xm;wJh User program

rSmygwJhtwdkif; ^CPU u aqmif&Gufygw,f/ Input terminal rSm&SdwJh ^signal udk ^CPU u MunfhNyD;? User program u cdkif;xm;wJhtwdkif; Output terminal udk ^signal xkwfay;ygw,f/

PLC awGrSm ^CPU ysufpD;rI[m ^5% yJ jzpfwwfygw,f/ ^PLC tvHk; 100 ysuf&if ^CPU ysufwm 5 vHk;yJ &Sdygw,f/ ^CPU [m ^PLC rSm A[kduGyfuJa&;tydkif; jzpfygw,f/ ^PLC xJu

CPU udk MPU (Main Processing Unit) vkdYvnf; ac:ygw,f/ ^PLC aumif;aumif; tvkyf vkyfaeovm;? rvkyfbl;vm;vdkY ppfaq;&wJh self-diagnosis wm0efukdvnf; ^CPU u xrf;

aqmifygw,f/

CPU &JU vkyfief;aqmifwmudk twdkcsKyfajym&&if ^PLC &JU input terminal awGrSm csdwf qufxm;wJY ^sensor awGuay;ydkYwJY ^signal awGudk vufcH&,lw,f/ NyD;awmh ^PLC &JU rSwfOmPf ^memory rSm a&;rSwfxm;wJY nTefBum;csufawG user program twdkif; aqmif&Guf w,f/ NyD;&if tJ'Daqmif&Gufcsufu&wJY program result awGudk ^PLC &JU output terminal

awGqDudk ydkYvTwfay;ygw,f/

Modular PLC awG&JU CPU module xJrSm ^memory eJY microprocessor udk wGJNyD; xnfhoGif;

wnfaqmufxm;ygw,f/ ^PLC &JUvkyfief;aqmifwmawGukd b,fvdkaqmif&Gufyg vdkY owfrSwf ay;xm;wJY control program (operating system) [mvnf; tJ'D ^memory xJrSm yg&Sdygw,f/

'gaMumifh CPU module ysufpD;cJhvkdY&Sd&if CPU module ukd topfvJvS,f wyfqif½HkeJYawmh

PLC [m e*dktwkdif; tvkyfrvkyf Ekdifao;ygbl;/ jyefvnfae&mcsxm; ay;&ygao;w,f/

tJ'gukd ^configure vkyfw,fvkdY ac:ygw,f/ ^Program jyefa&;xnfh ay;&ygao;w,f/

Compact PLC awGrSmawmh ^CPU ykdif;[m ^PLC &JUtpdwftykdif; wpfckrQom jzpfvkdY ^CPU ysuf pD;cJh&if ^PLC topf wpfvHk;eJY vJvS,fwyfqif&ygw,f/ ^Program ukdvnf; jyefa&;xnfh ay;&ygw,f/

Memory

ykdif;

Memory is the area that holds the operating system and user program.

PLC xJrSm ñTefMum;csuf instruction code awG? owif;tcsuftvuf ^data awG?

qHk;jzwfcsuf logic result awG? pwmawGudk rSwfom;odrf;qnf;xm;wJh ae&mukd ^Memory vkdY ac:ygw,f/

Memory rSm ESpfrsdK;?ESpfpm; &Sdygw,f/ Volatile memory eJY non-volatile memory wkdY jzpfMuygw,f/

Volatile memory — vQyfppfyg0gtNrJ&&SdaerS a&;rSwfxm;wmawGudk raysmufrysuf atmif odrf;qnf;xm;EkdifwJh ^memory trsdK;tpm; udk Volatile memory vkdY ac:ygw,f/

RAM (Random Access Memory) [m tJ'DtrsdK;tpm; jzpfygw,f/ vQyfppf"gwftm;r&Sd&if

RAM xJrSm a&;rSwfxm;wmawG tm;vHk; taiGUysHvGifhys,foGm;ovkd aysmufysufukefygw,f/

RAM twGuf power supply tNrJwrf;&aeapzkdY ^PLC xJrSm "gwfcJ ^battery xnfhay;xm;

&ygw,f/ tJ'D"gwfcJ&JU oufwrf;[m ^25°C rSmyJtNrJoHk;cJh&if 5ESpf MumatmifcHygw,f/

ylvGef;&ifyJjzpfjzpf? at;vGef;&ifyJjzpfjzpf? "gwfcJoufwrf;wkdygw,f/

Non-volatile memory — Non-volatile memory uawmh a&;rSwfxm;wmawGukd raysmufrysuf&atmif vQyfppf"gwftm;r&SdyJeJY Mum&Snfodrf;xm;Ekdifygw,f/ ^EEPROM

(Electrically Erasible Programmable ROM) [m tJ'Dvkd trsdK;tpm;jzpfygw,f/ tck vloHk;rsm;aeNyDjzpfwJh memory stick vkdrsdK;? Flash Memory trsdK;tpm; jzpfygw,f/ ^EEPROM ukd toHk;jyKxm;wJh ^PLC awGrSm "gwfcJxnfhzkdY rvkdtyfygbl;/

'gaMumifh "gwfcJygwJh ^PLC u wpfrsdK;? "gwfcJ rygwJh ^PLC u wpfrsdK; qkdNyD;

PLC ESpfrsdK;? ESpfpm;? &Sdygw,f/

tJ'D"gwfcJ&JU oufwrf;[m ^25°C rSmyJtNrJoHk;cJh&if 5ESpf MumatmifcHygw,f/

ylvGef;&ifyJjzpfjzpf? at;vGef;&ifyJjzpfjzpf? "gwfcJoufwrf;wkdygw,f/

I/O Image Memory

PLC wkdif;rSm ^wire qufoG,fvkdY&wJh Input terminal eJY Output terminal awG yg0ifMuyg w,f/ tJ'gukd External input eJY External output vkdY ac:Muygw,f/ Physical input eJY

Physical output vkdYvnf; ac:Muygw,f/

Input terminal awGrSm&SdaewJh ^signal awG&JUtajctaeukd t&dyfyrm xif[yf azmfjywJh

memory xJu ae&mawGukd Input image memory vdkY ac:ygw,f/ Input memory, Input relay vkdYvnf; ac:Muygw,f/ Input image table vdkYvnf; ac:ygw,f/

Input terminal eJY wkduf½kdufqufoG,frI&SdwJh memory area jzpfvkdY input image memory vkdY ac:wmjzpfygw,f/

Output terminal awGeYJ wkduf½kdufqufoG,frI&SdwJh ^memory xJu ae&mukd output image memory vdkY ac:ygw,f/ Output image table vdkYvnf; ac:ygw,f/

Output terminal eJY wdkuf½dkufqufoG,frI r&SdwJh internal memory udk Auxiliary Relay vkdY ac:ygw,f/ Internal Relay vkdYvnf; ac:Muygw,f/ Internal Output vdkYvnf; ac:ygw,f/

Internal Bit vdkYvnf; ac:ygw,f/ ^{Work Bit} vdkYvnf; ac:ygw,f/ a&;vdkY? zwfvdkY? &wJh

Memory xJu ^Bit ae&m jzpfygw,f/

Delta PLC awGxJu DVP-14SS2-11R2 rSm yg&SdwJh Physical I/O (X/Y) eJY ^internal

output (M) udk atmufrSm azmfjyxm;ygw,f/

Omron PLC awGxJu CPM1A-20CDR rSm yg&SdwJh input image memory ukdusawmh

Input Bit vkdY ac:ygw,f/ Output image memory ukdawmh ^{Output Bit} vkdY ac:ygw,f/

Output terminal eJY wdkuf½dkufqufoG,frI r&SdwJh internal memory udk Work Bit vkdY ac:yg w,f/

Omron PLC awGxJu CPM1A-20CDR rSm yg&SdwJh Physical I/O (IR 000/ IR 010) eJY

internal output (IR 200) wdkYudk atmufrSm azmfjyxm;ygw,f/

Simens PLC awGxJu S7-200 CPU224 rSmyg&SdwJh internal output ukd Bit Memory (M)

vkdY ac:ygw,f/ Input image memory ukdusawmh Process-Image Input Register (I) vkdY ac:ygw,f/ Output image memory ukdusawmh Process-Image Output Register (Q) vkdY ac:ygw,f/

Simens PLC awGxJu S7-200 CPU224 rSm yg&SdwJh Physical I/O (I/Q) eJY internal output (M)

udk atmufrSm azmfjyxm;ygw,f/

Siemens PLC S7-200 CPU 224 Process-image input register I0.0 to I15.7 Process-image output register Q0.0 to Q15.7

Bit memory (M) M0.0 to M31.7

Input Image Memory

Output Image Memory

Input Interface

“When two different objects are linked together the boundary is known as the Interface.”

PLC rSm ^signal 0ifwJh tykdif;ukd ^input ykdif;vkdY ac:ygw,f/ ^PLC &JU ^input rSm qufoG,f

&wJh ^Device awGukd input field devices vkdY ac:ygw,f/ Input Device awG jzpfMuwJh ^sensor awGeJY ^PLC ukd qufpyfay;wmjzpfvkdY Input Interface vkdY ac:wm jzpfygw,f/ Modular PLC

rSm Input Interface [m oD;jcm; ^module wpfck jzpfNyD; input module vkdY ac:ygw,f/

Compact PLC rSmawmh Input Interface [m ^PLC &JU ukd,fwGif;t*Fg tpdwftykdif; wpfckom jzpfygw,f/

Input ydkif;&JU tvkyfuawmh Input Field Devices awGu ay;ydkYwJh ^signal udk ^CPU u em;vnf vufcHEdkifwJh ^signal jzpfatmif ajymif;ay;wJhtvkyfu wpfck? input terminal rSm vSnfhywfpD;qif;wJhvQyfppf eJY ^PLC xJ vSnfhywfpD;qif;wJhvQyfppfwdkYudk wpfoD;wpfjcm;pD jzpfatmif vkyfay;wJh ^isolation tvkyfu wpfck? pkpkaygif; tvkyf 2ckudk vkyfygw,f/

PLC wkdif;&JU input interface tykdif;u 'Dtvkyf ESpfrsdK;udk vkyfaqmifMuygw,f/

Input terminal ukd signal strength rwefwq rSm;ay;rdcJh&if input interface tykdif;om ysufpD; oGm;NyD; ^CPU ukd xdcdkufrI vHk;0r&Sdygbl;/ 'gaMumifh 24VDC signal ay;&r,fh ^Input

point rSm ^220VAC ukd rSm;NyD;awmh qufoG,frdcJh&if ^CPU rysufygbl;/ ^Memory rysufygbl;/

Input interface yJ ysufoGm;ygr,f/ Modular PLC rSmqkd&ifawmh Input module topf wpfck vJvS,fwyfqifvkduf½HkeJY ^PLC [m e*kdtwkdif; tvkyfjyefvkyfEkdifygw,f/

Input interface rSm tajctaeajymif;vJrI ESpfrsdK;om &SdwJY Discrete Input eJY tajctae ajymif;vJrI wqufxJ &SdwJY ^{Analog Input} qdkNyD; ^input ESpfrsdK; &Sdygw,f/ Discrete input udk

digital input vdkYvnf; ac:ygw,f/ ^PLC [m ^Computer jzpfwJY twGuf ^binary udkom vufcHaqmif&Guf Edkifygw,f/ 'gaBumifh analog input interface rSm ^analog uae ^digital

signal (binary signal) udk ajymif;ay;wJY A/D Converter yg&Sdygw,f/

PLC &JU input signal ESpfrsdK;? ESpfpm; &SdwJYtxJu discrete input signal

taMumif;ukd 'DpmtkyfrSm tao;pdyf azmfjyoGm;rSm jzpfygw,f/

Discrete signal rSm ^signal &Sdaewmukd ^ON vkdY ac:ygw,f/ ^Signal r&Sdwmukd ^OFF vkdY ac:ygw,f/ ^Signal &Sdjcif;eJY? ^Signal r&Sdjcif;? 'DESpfrsdK; om&Sdygw,f/ Discrete input interface

rSm signal type ESpfrsdK; &Sdygw,f/ ^{AC signal} eJY ^{DC signal} jzpfygw,f/

Modular PLC rSm AC input module eJY DC input module qkdNyD; oD;jcm;pDxkwfvkyf ygw,f/ Compact PLC rSmvnf; AC input signal om ay;vkdY&wJh ^PLC eJY DC input signal

om ay;vkdY&wJh ^PLC &,fvkdY ESpfrsdK; cGJjcm;xkwfvkyfygw,f/

'DpmtkyfrSm ^{Delta PLC} udk ajccHNyD; a&;om;azmfjyoGm;rSmjzpfygw,f/ taMumif; wkdufqkdif wJh tcgwkdif; tjcm; ^PLC awGeJY EIdif;,SOfazmfjyay;oGm;ygr,f/

Discrete input interface 24 VDC Input

Figure 9a

yHk (Figure 9a) rSm DC24V signal ukd vufcHaqmif&GufwJh discrete input interface &JU

functional circuit diagram ukd azmfjyxm;ygw,f/

Discrete input interface 110 VAC Input

Figure 9b

yHk (Figure 9b) rSm AC110V signal ukd vufcHaqmif&GufwJh discrete input interface &JU

functional circuit diagram ukd azmfjyxm;ygw,f/

yHkrSmjyxm;wJhtwkdif; ^{AC input} rSma&m? ^{DC input} rSmyg optocoupler ukd oHk;NyD;

isolation vkyfxm;ygw,f/ tajccHtusqHk;vnf;jzpf? tawGU&trsm;qHk;vnf;jzpfwJh ^24VDC

input signal ay;&wJh Compact PLC ukd rlwnfNyD; input interface taMumif;udk a&;om;

azmfjy oGm;ygr,f/

Figure 9c

yHk (Figure 9c) rSm oHk;xm;wJh Opto-coupler (Photo-coupler) xJrSm tvif;a&mif xkwf vTwfay;wJh LED diode ESpfckudk tNrD;jyef? acgif;jyef? tNydKifquf antiparallel qufxm;yg w,f/ Current direction b,fvkdyJpD;pD;? ^LED wpfvHk;vHk; uawmh rD;vif;rSm aocsmyg w,f/ tJ'D ^LED ESpfvHk;uxGufwJh tvif;a&mifukd photo-transistor &JU ^base ay: wkduf½kduf usa&mufatmif csdefxm;ygw,f/ ^LED eJY photo-transistor twGJukd opto-coupler vkdY ac:ygw,f/ olUukd jyifyutvif;a&mif r0ifa&mufEkdifatmif tvHkydwf? tvif;ydwf?

wnfaqmufxm;ygw,f/ 'gaMumifh optocoupler xJu ^LED rD;vif;wmudk jyifyu rjrif rawGUEkdifygbl;/

PLC &JU input point udk jzwfpD;vmwJhvQyfppf ^currrent [m opto-coupler xJu ^LED xJ ukdvnf; jzwfoef;pD;qif;wmjzpfvkdY? tJ'D ^LED rD;vif;NyD; photo-transistor ay:udk tvif;

a&mif usa&mufygw,f/ tJY'DtcgrSm photo-transistor ukd ^ON jzpfapygw,f/

Photo-transistor = ON jzpfoGm;wJhtcg internal circuit u ^PLC &JU input status indicator LED ukd rD;vif;apygw,f/

Input point ukd ^signal a&mufvkdY ^ON jzpfwJhtcg tJ'D ^input eJY oufqkdifwJh input LED

rD;vif;wmjzpfvkdY? b,f ^point rSm ^signal &Sdw,fqkdwmukd tvG,fwul odEkdifygw,f/ ^Meter eJY wkdif;MunhfzkdY rvkdygbl;/ Input point udk jzwfpD;wJh ^current eJY internal circuit xJ (

photo-transistor xJ) pD;wJh ^current wkdY[m woD;wjcm;pD jzpfMuygw,f/ tJ'gukd galvanically isolated vkdY ac:ygw,f/ Input point u 0ifvmwJh ^signal ukd internal circuit xJ a&mufatmif ydkYaqmifay;wmu tvif;a&mifeJY ykdYay;wm jzpfygw,f/ 'gaMumifh

photo-coupling (opto-photo-coupling) vkdY ac:ygw,f/

Output Interface

Output ydkif;uawmh ^CPU u xkwfay;wJh ^signal udk Output terminal twGuf oifhawmfwJh

signal trsdK;tpm;jzpfatmif ajymif;ay;wJhtvkyfu wpfck? ^PLC xJvSnfhywf pD;qif;wJh vQyfppfeJY Output terminal rSm vSnfhywfpD;qif;wJhvQyfppf wdkUudk wpfoD;wpfjcm;pD jzpfatmif

isolation vkyfay;&wJh tvkyfuwpfck? pkpkaygif; tvkyf 2ck udk vkyfygw,f/

PLC &JU ^output rSmvnf; signal type ESpfrsdK; &Sdygw,f/

Discrete output signal eJY Analog output signal wkdY jzpfMuygw,f/ ^CPU u xGufvmwJY

signal u binary signal (digital signal) jzpfygw,f/ tJ'D digital signal udk D/A Converter eJY

analog tjzpf ajymif;ay;jyD;rS output terminalu analog signal ukd xkwfay;wm jzpfygw,f/

'DpmtkyfrSm discrete output signal taMumif;ukdom a&;om;azmfjyrSm jzpfyg w,f/

PLC rSm discrete output type oHk;rsdK;&Sdygw,f/

(1) Relay Output (2) Transistor Output

(3) TRIAC Output (SSR Output) wkdY jzpfMuygw,f/

tJ'DoHk;rsdK;pvHk;udk galvanic isolation &atmif wnfaqmufxm;ygw,f/

 

 

Relay Output

Relay contact

Relay coil

Max. Switching Capacity : 2A, 250VAC (cosΦ= 1) ; 2A, 24VDC Figure 10. yHkrSm Relay contact eJY output point wdkY qufoG,fxm;yHkudk

azmfjyxm;ygw,f/

CPU &JU qHk;jzwfcsufeJYtnD internal circuit u output signal xkwfay;vkdufwJhtcg (1) Output status indicator LED rD;vif;ygw,f/

(2) Relay coil energize jzpfygw,f/

(3) ^Relay &JU N.O contact [m ^close jzpfoGm;ygw,f/

Output wpfckpD rSm internal circuit wpfck? ^{status LED} wpfck? ^relay wpfck?wkdY yg&Sdygw,f/

Relay coil eJY tJ'D ^relay &JU ^contact wkdY[m galvanically isolated jzpfNyD; magnetically coupled vkyfxm;ygw,f/

Relay coil xJpD;qif;wJh ^current eJY ^contact xJpD;qif;wJh ^current wkdY[m woD;wjcm;pD jzpfygw,f/

PLC Output Relay [m N.O contact wpfckomygwJh Miniature Relay jzpfygw,f/

Voltage free contact jzpfvkdY ^AC a&m? ^DC yg jzwfoef;pD;qif;Ekdifygw,f/

Transistor Output

Transistor Output rSm ^PNP eJY ^NPN qkdNyD; ESpfrsdK; &Sdygw,f/ ^CPU u ckdif;vkdY ^internal

circuit u output signal xkwfay;vkdufwJhtcg?

(1) Output status indicator LED rD;vif;ygw,f/

(2) Optocoupler xJu ^LED rD;vif;vkdY phototransistor [m ^ON jzpfoGm;ygw,f/

(3) Output transistor vnf; ^ON jzpfoGm;ygw,f/

Output Transistor

Photo-transistor

Max. Switching Capacity: 50 mA at 4.5 VDC to 300 mA at 26.4 V

Figure 11. yHkrSm Transistor Output (NPN) eJY output point wdkY qufoG,fxm;yHkudk azmfjyxm;ygw,f/

Output Transistor Opto-coupler

Photo-transistor

Max. Switching Capacity: 50 mA at 4.5 VDC to 300 mA at 26.4 V

Figure 12. yHkrSm Transistor Output (PNP) eJY output point wdkY qufoG,fxm;yHkudk azmfjyxm;ygw,f/

PNP yJjzpfjzpf? ^NPN yJjzpfjzpf? ^transistor &JU ^collector ukd output point eJY qufoG,f xm;ygw,f/ ^PLC &JU Output Transistor [m open collector output type jzpfNyD;? ^DC vQyfppf om jzwfoef;pD;qif;Ekdifygw,f/ ^PLC &JU ^output [m transistor output jzpfcJY&if ^PNP 'grSr[kwf ^NPN wpfrsdK;om ygavh&Sdygw,f/

TRIAC Output

TRIAC Output ukd SSR (Solid State Relay) output vkdYvnf; ac:ygw,f/ ^Triac

output rSm oHk;xm;wJh opto-coupler xJrSm ^LED eJY ^photo-diac wkdY yg0ifygw,f/

CPU u apckdif;wJhtwkdif; internal circuit u output signal xkwfay;vkdufwJhtcg (1) Output status indicator LED rD;vif; ygw,f/

(2) Photodiac ON jzpfoGm;ygw,f/

(3) Output Triac ON jzpfoGm;ygw,f/

     

Output Triac Photo-diac

Opto-coupler

Max. Switching Capacity: 0.4 A at 100 to 240 VAC (50/60 Hz)

Figure 14. yHkrSm Triac Output eJY output point wdkY qufoG,fxm;yHkudk azmfjyxm;ygw,f/ 

Triac Output ukd ^AC vQyfppfeJYom toHk;jyK&ygw,f/ tu,fí ^DC vQyfppfeJY qufoG,f toHk;jyKcJhr,fqkd&if ^ON jzpfNyD;wJh output point [m ^Triac &JU obm0t& ^OFF jyefrjzpfawmhygbl;/

PLC &JU output type oHk;rsdK;udk atmufrSm,SOfwGJazmfjyxm;ygw,f/

Output Type Rated Valtage and Current

(Typical Value) Switching Time

Relay 250VAC(2A) / 30VDC(2A) OFF to ON: 10 ms, ON to OFF: 10 ms Transistor 30VDC, 300 mA OFF to ON: 0.2 ms, ON to OFF: 0.2 ms TRIAC (SSR) 85V to 240VAC, 400 mA OFF to ON: 1ms, ON to OFF: 10 ms

Typical value qkdwm tawGU&rsm;wJh wefbkd;ukd ajymwmjzpfygw,f/ ^PLC &JU ^output awG[m isolated output awGjzpfMuwJhtwGuf output terminal rSmqufoG,frIrSm;,Gif;vkdY ^PLC ysufoGm;cJh&if output interface ykdif;yJ ysufpD;wmjzpfygw,f/ ^CPU wkdY ^Memory wkdYukd rxdcdkuf rysufpD;apygbl;/ Compact PLC rSmawmh output interface ysufoGm;cJh&if ^PLC topf wpfvHk;eJY vJvS,fwyfqif&rSm jzpfNyD; ^program udkvnf; jyefa&;xnfh&ygw,f/ Modular PLC

rSmqkd&ifawmh Output module topf wpfck vJvS,fwyfqifvkduf½HkeJY ^PLC [m e*kdtwkdif;

tvkyfjyefvkyfEkdifygw,f/

PLC Status Indicators and I/O Status Indicators

PLC wdkif;&JU rsufESmpmay:rSm ^PLC &JU tajctaeawGudk azmfjywJh Status Indicator

awG yg&SdMuygw,f/ LED indicator lamp awGeJY azmfjyavh&Sdygw,f/ Status Indicator 3rsdK;&Sdyg w,f/

Input signal awG&JU tajctaeawGudk azmfjywJh ^LEDs awGudk Input Status LED vdkY ac:ygw,f/ Input terminal ta&twGuf&Sdoavmuf Input Status LED ta&twGuf yg&Sd ygw,f/ ^PLC &JU input terminal rSm ^signal &Sd&if ^{Input LED} rD;vif;ygw,f/

Output signal &JUtajctaeudk azmfjywJ ^LEDs awGudk Output Status LED vdkY ac:yg w,f/ Output terminal ta&twGuf&Sdoavmuf Output Status LED ta&twGuf yg&Sd ygw,f/ ^CPU u ^signal xkwfay;vdkuf&if output LED rD;vif;ygw,f/

NyD;awmh PLC Status LED vdkY ac:wJh ^power &&Sd&ifvif;wJh ^{Power LED} &,f? ^PLC udk

RUN vdkufrS vif;wJh ^{RUN LED} &,f? rSm;aeNyD ^Error vdkY azmfjywJh ^{ERR LED} &,f?

'DoHk;rsdK;?oHk;pm;?uawmh ^PLC wdkif;rSmyg&SdMuygw,f/

tcsdKU ^PLC awGrSm ^PLC xJudk ^program a&;xnfhwJhtcg rD;vif;wJh Communication LED ygwwfygw,f/

tcsdKU ^PLC awGrSm ^PLC xJu ^battery &JU tajctaeudk azmfjywJh Battery LED vnf;

yg&SdwwfMuygw,f/

User program u ckdif;xm;wJhtwdkif; ^PLC [m vkyfaqmifaeNyDqdk&if ^{RUN LED} rD;vif;aeygw,f/

 

  Octal number

eJYa&wGufvdkY

Input u 24ck jzpfygw,f/

Octal number

eJYa&wGufvdkY

Output u 16ck jzpfyg w,f/

tcef; (4)

^PLC

ukd wyfqiftoHk;jyKyHktaMumif;/

PLC ukd wyfqiftoHk;jyKr,fqkd&if ^PLC ukd b,fvkd xkyfykd;xm;ovJ qkdwmudk azmfjy wJh IP code number taMumif;ukd odzkdYvkdtyfygw,f/ ^IP udk Ingress Protection vkdYvnf; ac:

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Installation in Control Panel

When wiring input and output lines in ducts, keep a minimum space of 20 mm above and below the PLC base unit for maintenance. To prevent excessive heat built-up, keep a minimum space of 20 mm around the PLC unit for ventilation.

 

Advised Installation Practices Shield the PLC

The most common method of shielding, is to install the PLC inside a grounded steel enclosure.

Proper Cable Selection

Use twisted, shielded-pair cable for the power cable and field wiring. Properly terminate the shields of all cables to a single-point high-quality ground.

Ground the PLC

The purpose of grounding the PLC is to protect the electronic equipment from electric shock and harmful noise. To ground the PLC, connect a 12 to 16 gauge wire from the frame ground terminal strip screw of the controller to a high quality earth ground (less then 2 Ω).

Since electrical currents always take the path of least resistance, the noise currents induced by a magnetic field will flow through the PLC frame ground terminal screw to earth ground.

This essentially draws the noise away from the PLC modules.

The most effective method of grounding the PLC frame is to ground the PLC independent of other equipment. Avoid grounding the PLC through a daisy chain of wire

The most effective method of grounding the PLC frame is to ground the PLC independent of other equipment. Avoid grounding the PLC through a daisy chain of wire

In document UNIVERSIDAD COMPLUTENSE DE MADRID (página 104-113)