Vim li cas Industrial Automation Relies On Optocoupler Isolators

Optocoupler isolators yog qhov tseem ceeb hauv kev lag luam automation, ua kom ntseeg tau cov teeb liab kis tau tus mob thaum tiv thaiv cov khoom siv hluav taws xob thiab cov neeg ua haujlwm los ntawm siab -voltage txaus ntshai. Xaiv txoj cai optocoupler isolator nyob ntawm kev nkag siab txog kev ua haujlwm ib puag ncig thiab kev cais tawm. Kab lus no qhia txog cov ntsiab lus tseem ceeb uas yuav tsum xav txog thaum xaiv optocoupler cais tawm rau cov ntawv thov kev lag luam.

Lub luag haujlwm ntawm Optocoupler Isolators hauv Industrial Automation

Hauv kev lag luam ib puag ncig, optocoupler isolators muab hluav taws xob cais tawm ntawm qhov sib txawv ntawm qhov system. Qhov kev sib cais no tiv thaiv qis -voltage tswj circuits los ntawm high-voltage fais fab electronics, ua optocouplers tseem ceeb rau:

PLCs: Muaj kev nyab xeeb cuam tshuam kev tswj cov teeb liab.

Lub cev muaj zog tsav: cais cov tswj Circuit Court los ntawm siab -voltage seem.

Industrial Sensors: Ua kom huv si kis tau tus mob tsis muaj kev cuam tshuam.

Kev xaiv tseem ceeb rau Optocoupler Isolators

Kev rho tawm Voltage
Txhais qhov siab tshaj plaws voltage uas optocoupler tuaj yeem ua haujlwm ntawm cov tswv yim thiab cov zis. Rau feem ntau cov ntawv thov kev lag luam, qhov kev sib cais ntawm 3kV yog qhov raug, feem ntau xav tau ntawv pov thawj zoo li UL lossis VDE.

Kev hloov pauv tam sim no (CTR)
Txiav txim siab cov teeb liab kis tau tus mob. Xaiv optocouplers nrog CTR ruaj khov, feem ntau yog li ntawm 50% txog 600%, nyob ntawm daim ntawv thov thiab kev ua haujlwm kub.

Hloov ceev
Rau qhov yooj yim rau / tawm tswj, optocouplers nrog lub sij hawm hloov qeeb (10-50µs) txaus. Cov ntawv thov kev kub ceev, xws li kev sib txuas lus hauv kev lag luam, yuav tsum tau hloov sijhawm sai dua (<1µs).

Kev tiv thaiv suab nrov
Kev lag luam ib puag ncig feem ntau pom muaj qhov cuam tshuam ntawm electromagnetic cuam tshuam (EMI). Optocouplers uas muaj qhov sib npaug siab -Mode Rejection Ratio (CMRR) pab tswj cov teeb liab ncaj ncees hauv cov suab nrov.

Qhov kub thiab txias
Xyuas kom cov optocouplers tuaj yeem ua haujlwm nyob rau hauv ntau qhov kub thiab txias (-40℃txog 85℃lossis siab dua) kom tiv taus kev lag luam hnyav.

Siv Cases hauv Industrial Automation

Optocoupler isolators yog qhov tseem ceeb hauv ntau yam kev siv hauv kev lag luam:

Kev tswj lub cev muaj zog: cais tswj cov teeb liab kom ntseeg tau tias lub cev muaj zog ua haujlwm zoo.

PLCs: Tiv thaiv qis -voltage logic circuits los ntawm siab -voltage actuators.

Kev Sib Txuas Lus: Ua kom muaj kev ntseeg siab ntawm cov ntaub ntawv sib kis hauv qhov chaw nrov nrov xws li RS-485 thiab CAN tsheb npav.

Xaiv txoj cai optocoupler isolator suav nrog kev ntsuas kev rho tawm hluav taws xob, CTR, hloov ceev, suab nrov tiv thaiv, thiab qhov kub thiab txias. Kev nkag siab txog cov kev cai tshwj xeeb ntawm daim ntawv thov ua kom muaj kev nyab xeeb thiab txhim khu kev qha, ua rau optocoupler cais tawm yog ib feem tseem ceeb ntawm kev lag luam automation systems.