Tom qab hloov qhov kub khiav kev sib txuas lus tiv thaiv kev tiv thaiv, nws raug nquahu kom ua thawj zaug rov- kev tshuaj xyuas tom qab 4 teev ntawm kev ua haujlwm, tom qab ntawd los ntawm kev tshuaj xyuas tag nrho hauv 30 hnub. Qhov no ua kom muaj kev ruaj ntseg ntev -lub sij hawm, ib qho tseem ceeb rau kev txiav txim siab-tshwj xeeb tshaj yog nyob rau hauv ib puag ncig kev lag luam uas muaj qhov kub thiab txias, cov av noo siab, los yog kev co nquag.
1. Pib Re-kev tshuaj xyuas: Tom qab 4 teev ntawm kev ua haujlwm (Lub Sijhawm Tshawb Xyuas Tseem Ceeb)
Lub hom phiaj: Txhawm rau txiav txim siab "heat-sau- cuam tshuam" faults thiab xyuas cov resistor qhov ruaj khov nyob rau hauv qhov ntsuas kub tsis tu ncua.
Cov khoom soj ntsuam:
Ntsuas tus nqi Resistance: Tom qab kaw thiab txiav lub zog, ntsuas qhov sib npaug ntawm cov kab A thiab B kom paub meej tias nws tseem nyob ≈60Ω, tsis muaj qhov dhia nrawm lossis qhib - cov xwm txheej hauv Circuit Court.
Saib Waveforms: Tom qab ua kom lub zog, saib xyuas lub oscilloscope waveforms kom paub meej tias tsis muaj teeb liab distortions xws li ringing lossis overshoot.
Saib Xyuas Cov Ntaub Ntawv: Tshawb xyuas PLC/SCADA cov ntaub ntawv sib txuas lus kom paub meej tias qhov tsis muaj qhov tsis zoo xws li "CRC yuam kev" lossis "timeout / offline" cov xwm txheej.
Lus Cim Tshwj Xeeb: Yog hais tias kev sib txuas lus tsis zoo tuaj yeem tshwm sim ob peb teev tom qab cov khoom siv pib ua haujlwm, nws yog qhov tshwm sim ntau heev uas qhov teeb meem tshwm sim los ntawm qhov ntsuas hluav taws xob tsis txaus lossis cov cua sov tsis txaus.
2. Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb: Hauv 30 Hnub ntawm Kev Hloov Kho (Lub Sij Hawm Pom Zoo)
Siv tau Scenarios:
Tshiab system commissioning theem
Workshop ambient temperature is high (>40 degree)
Tsheb npav cable ntev tshaj 50 meters, los yog lub teeb liab load hnyav
Kev siv tsis yog -OEM lossis tsis yog - tus qauv resistors
Cov khoom soj ntsuam:
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Yam khoom |
Ntsiab tshuaj ntsuam xyuas |
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Lub cev Resistor |
Tshawb xyuas cov cim qhia ntawm overheating, xws li carbonization, discoloration, los yog tawg nyob rau hauv lub encapsulation. |
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Solder Joint Reliability |
Tshawb xyuas cov pob qij txha, oxidation, lossis micro- tawg. |
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Sib npaug Resistance Stability |
Xyuas kom tseeb tias ntau qhov kev nyeem ntawv tsis sib xws thiab tsis muaj qhov hloov pauv tam sim ntawd. |
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Kev sib txuas lus Log Trends |
Tshawb xyuas qhov tshwm sim ntawm cov pob ntawv tsis sib xws lossis nce kev sib txuas lus latency. |
Tswv yim tswv yim: Qhov kev tshuaj ntsuam no tuaj yeem ua tiav nrog rau cov khoom siv lub sijhawm tu txhua hli kom ua tau zoo tshaj plaws.
3. Ntev-Cov Lus Qhia Txog Kev Saib Xyuas Lub Sij Hawm: Siv cov cuab yeej tshuaj xyuas niaj hnub
Lub Sij Hawm Pom Zoo: Ua qhov kev tshuaj xyuas tiv thaiv txhua 6 lub hlis.
Txoj kev tshuaj xyuas:
suav nrog qhov kub khiav qhov system hauv daim ntawv teev kev saib xyuas txhua xyoo.
Ua ib txhij kev tshuaj xyuas ntawm cov khoom tseem ceeb, xws li kub sensors thiab cua sov coils.
Siv ib qho infrared thermal imager los saib xyuas qhov kev khiav hauj lwm kub ntawm cov resistors (ib txwm ntau yam:<70°C).
Siv: Muaj cov ntaub ntawv txheeb cais qhia tias kwv yees li 40% ntawm kev sib txuas lus tsis ua haujlwm rov tshwm sim hauv 1 mus rau 3 lub hlis ntawm kev hloov khoom; Qhov laj thawj tseem ceeb yog qhov tsis ua raws li- kev tshuaj xyuas thaum lub sijhawm pib.
Cov ntsiab lus: Kev tshuaj xyuas thawj zaug 4 teev tom qab hloov pauv- ua raws cov lus qhia dav dav - kev tshuaj xyuas tsis pub dhau 30 hnub- yog tus yuam sij rau kev ruaj ntseg kev sib txuas lus. Nws yog ib qho tseem ceeb los xyuas kom meej tias 120Ω / 0.25W (los yog siab dua specification) resistors raug ntsia tshwj xeeb rau ntawm ob qho kawg ntawm lub tsheb npav, thiab tshem tawm cov kev phom sij los ntawm kev tshuaj xyuas ib ntus.
