Ib qho kev daws teeb meem uas ntseeg siab tshaj plaws rau qhov no yog Siemens VFD Kaw -Loop Control. Siemens VFD (Variable Frequency Drive) yog ib qho khoom siv uas tswj kev ceev thiab lub zog ntawm lub tshuab hluav taws xob los ntawm kev kho qhov zaus thiab qhov hluav taws xob ntawm lub zog muab rau lawv. Kaw -loop tswj, thaum ua ke nrog encoder tawm tswv yim, coj qhov kev tswj no mus rau qib tom ntej, kom ntseeg tau qhov tseeb txawm nyob rau hauv cov ntawv thov xav tau tshaj plaws. Txawm hais tias koj tab tom khiav lub Hoobkas, lub tshuab conveyor, lossis lub twj tso kua mis, nkag siab tias Siemens VFD Kaw li cas -Loop Control ua haujlwm nrog cov lus qhia encoder tuaj yeem pab koj txhim kho kev ua haujlwm, txuag hluav taws xob, thiab txo qis sijhawm.
Siemens VFD Kaw yog dab tsi -Loop Control?
Ua ntej, cia peb pib nrog cov hauv paus: dab tsi yog qhov kaw - voj tswj qhov system rau Siemens VFD? Lub kaw - voj kaw lus yog ib hom kev tswj uas siv cov lus tawm tswv yim los kho lub cav ceev thiab kev ua haujlwm. Tsis zoo li qhov qhib - lub voj kaw lus (uas tsis siv cov lus tawm tswv yim thiab tsis tuaj yeem kho qhov yuam kev), kaw - lub voj kaw txuas txuas ntxiv xyuas lub cev muaj zog qhov nrawm thiab muab piv rau qhov xav tau ceev. Yog tias muaj qhov sib txawv (hu ua "yuam kev"), Siemens VFD kho qhov zaus thiab qhov hluav taws xob los kho nws. Qhov no ua rau Siemens VFD Kaw-Loop Control ntau qhov tseeb thiab txhim khu kev qha ntau dua li qhib-loop tswj, tshwj xeeb tshaj yog rau cov ntawv thov uas xav tau kev nrawm nrawm, xws li cov tshuab ntim khoom lossis cov cuab yeej CNC. Siemens VFD Kaw-Loop Control yog siv nyob rau hauv ntau qhov kev lag luam vim tias nws muab cov kev hloov pauv ntawm VFD nrog qhov tseeb ntawm kev tawm tswv yim-raws li kev tswj hwm.
Siemens VFD Kaw-Loop vs. Qhib-Loop Control
Kom nkag siab tias yog vim li cas Siemens VFD Kaw -Loop Control yog qhov tseem ceeb, cia peb muab piv rau qhib - voj tswj. Hauv qhov qhib - lub voj voog, Siemens VFD xa cov teeb liab mus rau lub cev muaj zog kom khiav ntawm qhov ceev, tab sis nws tsis kuaj seb lub cev muaj zog puas tau khiav ntawm qhov ceev ntawd. Yog hais tias lub cev muaj zog lub load hloov (piv txwv li, ib tug conveyor nqa ib tug hnyav load), qhov ceev yuav poob, thiab VFD yuav tsis kho nws. Qhov no tuaj yeem ua rau cov khoom tsis zoo, tsis muaj peev xwm, lossis txawm tias lub tshuab puas. Ntawm qhov tod tes, Siemens VFD Kaw-Loop Control siv cov lus tawm tswv yim (los ntawm tus encoder) los saib xyuas lub cev muaj zog qhov nrawm. Yog tias qhov ceev poob vim qhov hnyav dua, VFD cia li nce qhov zaus kom coj qhov nrawm rov qab mus rau qib xav tau. Qhov no yog vim li cas Siemens VFD Kaw -Loop Control yog qhov zoo dua rau cov ntawv thov uas xav tau qhov tseeb, xws li luam ntawv, lub raj mis, lossis cov neeg hlau. Ib lo lus nug feem ntau yog: "Thaum twg kuv yuav tsum siv Siemens VFD kaw-loop vs qhib-loop tswj?" Cov lus teb yog yooj yim: siv kaw-voj yog tias koj xav tau kev nrawm nrawm, txawm tias thaum hloov pauv.
Cov lus qhia encoder: Tus yuam sij rau Siemens VFD kaw -Loop Control
Encoder tawm tswv yim yog dab tsi ua rau Siemens VFD Kaw -Loop Control ua tau. Ib qho encoder yog ib yam khoom me me uas txuas rau lub cev muaj zog. Nws ntsuas lub cev muaj zog ceev thiab txoj hauj lwm thiab xa cov ntaub ntawv no rov qab mus rau Siemens VFD. Lub VFD tom qab ntawd siv cov lus tawm tswv yim no los kho lub cev muaj zog ceev thiab lub zog, kom ntseeg tau tias nws phim cov kev xav tau. Yog tsis muaj kev tawm tswv yim encoder, Siemens VFD Kaw -Loop Control yuav tsis tuaj yeem kho qhov tsis raug lossis tswj xyuas qhov tseeb. Encoders yog qhov tseem ceeb rau cov ntawv thov uas txawm tias qhov hloov pauv me me tuaj yeem ua rau muaj teeb meem, xws li hauv cov khoom siv kho mob lossis kev tsim khoom. Siemens VFD kaw- voj tswj nrog kev tawm tswv yim encoder yog tus qauv kub rau kev tswj xyuas lub cev muaj zog hauv kev lag luam.
Yuav ua li cas Encoder Feedback Ua haujlwm nrog Siemens VFD
Cia peb rhuav tshem cov lus tawm tswv yim encoder ua haujlwm nrog Siemens VFD ib kauj ruam zuj zus. Ua ntej, lub encoder yog mounted rau ntawm lub cev muaj zog ncej. Raws li tus ncej tig, lub encoder tsim hluav taws xob cov cim qhia uas sawv cev rau lub cev muaj zog ceev thiab txoj hauj lwm. Cov teeb liab no raug xa mus rau Siemens VFD lub chaw tswj hwm. Lub VFD ces sib piv cov encoder cov lus tawm tswv yim (qhov tseeb ceev) rau qhov ceev ceev (qhov ceev koj xav kom lub cev muaj zog khiav ntawm). Yog hais tias qhov tseeb ceev yog qis dua qhov teeb tsa ceev, VFD nce zaus ntawm lub zog nkag mus rau lub cev muaj zog, uas ua rau lub cev muaj zog tig nrawm dua. Yog hais tias qhov tseeb ceev yog siab tshaj qhov teem ceev, VFD txo qhov zaus, qeeb lub cev muaj zog. Cov txheej txheem no tshwm sim ntau pua zaus hauv ib ob, yog li lub cev muaj zog qhov ceev yuav nyob twj ywm tsis tu ncua txawm tias qhov hloov pauv hloov. Siemens VFDs yog tsim los ua haujlwm seamlessly nrog encoders, ua teeb tsa thiab ua haujlwm yooj yim. Piv txwv li, Siemens MM440 thiab SINAMICS G120C VFDs txhawb encoder tawm tswv yim nrog yooj yim parameter nqis (xws li P1300=20 rau vector tswj nrog encoder tawm tswv yim) kom lub system nce thiab khiav ceev.
Hom encoders siv hauv Siemens VFD kaw-Loop Control
Muaj ob hom encoders tseem ceeb siv nrog Siemens VFD Kaw-Loop Control: incremental encoders thiab absolute encoders. Incremental encoders yog qhov ntau tshaj -lawv ntsuas lub cev muaj zog ceev los ntawm kev suav cov pulses generated raws li tus ncej spin. Lawv yog cov yooj yim, pheej yig, thiab ua haujlwm zoo rau feem ntau cov ntawv thov kev lag luam. Tsis muaj encoders, ntawm qhov tod tes, ntsuas lub cev muaj zog txoj haujlwm (tsis yog ceev xwb) thiab tuaj yeem muab cov lus tawm tswv yim txawm tias lub hwj chim raug tua. Lawv yog siv rau hauv daim ntawv thov uas yuav tsum tau tswj txoj hauj lwm meej, xws li robotics lossis CNC tshuab. Ob hom encoders ua haujlwm zoo nrog Siemens VFDs, thiab qhov kev xaiv nyob ntawm koj daim ntawv thov xav tau. Piv txwv li, lub tshuab conveyor tuaj yeem siv cov encoder incremental, thaum lub caj npab robotic yuav siv tus encoder kiag li. Thaum teeb tsa Siemens VFD kaw- voj tswj nrog cov lus qhia encoder, xaiv tus encoder txoj cai yog qhov tseem ceeb kom tau txais qhov tseeb tshaj plaws.
Kev cai ceev ceev nrog Siemens VFD
Kev tswj ceev ceev yog qhov txiaj ntsig tseem ceeb ntawm Siemens VFD Kaw-Loop Control. Nws txhais tau hais tias lub cev muaj zog khiav ntawm qhov tseeb ceev uas koj tau teeb tsa, txawm tias thaum lub sijhawm hloov pauv, qhov voltage hloov pauv, lossis lwm yam hloov pauv. Qhov no yog qhov tseem ceeb rau ntau qhov kev lag luam-piv txwv li, hauv xovxwm luam ntawv, kev ceev tsis sib xws tuaj yeem ua rau cov ntawv tsis meej lossis cov nplooj ntawv tsis raug; nyob rau hauv lub twj tso kua mis, qhov tsis sib xws ceev tuaj yeem ua rau cov dej tsis sib xws lossis siab. Siemens VFD Kaw-Loop Control xyuas kom meej tias lub cev muaj zog ceev nyob rau hauv ib qho me me (feem ntau +/- 0.1% ntawm qhov teeb tsa ceev), ua rau nws zoo tagnrho rau siab - daim ntawv thov precision. Yuav ua li cas teeb tsa Siemens VFD precision ceev txoj cai? Nws pib nrog kev teeb tsa encoder kom raug thiab VFD parameter configuration, uas peb yuav npog tom qab hauv qhov blog no.
Vim li cas Precision Speed Regulation Matters
Kev tswj ceev ceev tsis yog ib qho "zoo-rau- muaj"- nws yog qhov tseem ceeb rau ntau lub lag luam. Nov yog peb qhov laj thawj tseem ceeb vim li cas nws tseem ceeb:
- Txhim kho cov khoom zoo: Kev nrawm ua kom ntseeg tau tias cov khoom raug ua tib yam txhua lub sijhawm. Piv txwv li, nyob rau hauv ib lub tshuab ntim, ceev ceev txhais tau tias tag nrho cov pob khoom raug kaw kom raug thiab muaj qhov hnyav tib yam.
- Kev txuag hluav taws xob: Siemens VFD Kaw-Loop Control kho lub cev muaj zog kom haum rau lub nra, uas siv lub zog tsawg dua li khiav lub cev muaj zog txhua lub sijhawm. Qhov no tuaj yeem txo cov nqi hluav taws xob los ntawm 10-30% lossis ntau dua, nyob ntawm daim ntawv thov.
- Lub neej tshuab ntev: Thaum lub cev muaj zog khiav ntawm qhov nrawm, nws muaj kev hnav thiab tsim kua muag tsawg.
Qhov no txo cov nqi tu thiab ncua lub neej ntawm lub cev muaj zog thiab lwm yam khoom siv tshuab. Siemens VFD Kaw-Loop Control txoj cai ceev ceev pab cov lag luam txuag nyiaj thiab txhim kho kev ntseeg tau.
Yuav ua li cas Siemens VFD Ua tiav Cov Kev Cai Ceev Ceev
Siemens VFDs siv cov thev naus laus zis siab heev kom ua tiav cov kev cai ceev ceev. VFD's control unit ua cov lus tawm tswv yim encoder hauv lub sijhawm tiag tiag thiab kho qhov zaus thiab qhov hluav taws xob siv PI (Proportional-Integral) maub los. PI maub los xyuas kom meej tias lub cev muaj zog ceev ceev rov qab mus rau qhov teeb tsa ceev yog tias muaj qhov yuam kev. Siemens VFDs kuj muaj cov yam ntxwv xws li acceleration pre- tswj thiab resonance damping los txhim kho stability thiab txo oscillations. Piv txwv li, acceleration pre- tswj xam cov torque xav tau raws li lub cev muaj zog acceleration thiab inertia, ntxiv rau tus tswj ceev cov zis kom lub cev muaj zog teb sai. Resonance damping pab txo cov neeg kho tshuab kev co, uas tuaj yeem cuam tshuam qhov nrawm nrawm. Cov yam ntxwv no ua haujlwm ua ke los ua Siemens VFD Kaw-Loop Control ib qho ntawm cov kev tswj xyuas lub cev muaj zog tshaj plaws muaj.
Yuav Teeb Siemens VFD Kaw li cas -Loop Control
Kev teeb tsa Siemens VFD Kaw-Loop Control yog qhov yooj yim dua li koj xav, tshwj xeeb tshaj yog nrog Siemens 'tus neeg siv- tus qauv VFD tus phooj ywg zoo li SINAMICS V20, G120C, lossis MM440. Nov yog ib kauj ruam -los ntawm- cov lus qhia kauj ruam los pab koj pib. Nco ntsoov, yog tias koj tsis paub txog kev ua haujlwm hluav taws xob, nws yog qhov zoo tshaj plaws los nug tus kws tshaj lij kev cob qhia los pab kom muaj kev nyab xeeb thiab teeb tsa kom raug.
Kauj ruam 1: Nruab lub encoder
Ua ntej, mount lub encoder rau lub cev muaj zog ncej. Xyuas kom tseeb tias nws tau txuas ruaj khov thiab ua kom raug raws li qhov tseeb -kev ua yuam kev tuaj yeem ua rau muaj kev tawm tswv yim tsis raug. Ua raws li cov chaw tsim khoom encoder cov lus qhia rau kev teeb tsa. Rau Siemens VFDs, nws yog ib qho tseem ceeb uas yuav tsum tau siv lub encoder uas sib xws nrog VFD qauv. Feem ntau Siemens VFDs txhawb cov encoders ntxiv nrog qhib- cov khoom sau lossis cov khoom sib txawv, thiab qee qhov kev txhawb nqa cov encoders kiag li ntawm PROFINET lossis IO-Txuas.
Kauj ruam 2: Xaim lub encoder rau Siemens VFD
Tom ntej no, txuas lub encoder cov xov hlau rau Siemens VFD. VFD muaj cov khoom siv tshwj xeeb rau kev tawm tswv yim encoder- xyuas VFD cov neeg siv phau ntawv txhawm rau nrhiav qhov tseeb terminals. Feem ntau, koj yuav txuas lub encoder lub hwj chim mov, hauv av, thiab teeb liab xov hlau. Siv cov ntaub thaiv npog los txo cov hluav taws xob cuam tshuam, uas tuaj yeem ua rau muaj kev tawm tswv yim tsis raug. Nws tseem yog ib qho tseem ceeb uas yuav tsum khaws cov xov hlau encoder cais tawm ntawm cov xaim hluav taws xob kom tsis txhob cuam tshuam.
Kauj ruam 3: Configure Siemens VFD Parameters
Thaum lub encoder yog xaim, koj yuav tsum tau teeb tsa Siemens VFD cov kev txwv kom qhib kaw - voj tswj. Nov yog cov ntsiab lus tseem ceeb rau kev teeb tsa (cov lej ntsuas tus lej yuav txawv ntawm VFD qauv, yog li kos koj phau ntawv qhia):
- Teem lub hom tswj kom kaw - voj (vector tswj nrog encoder tawm tswv yim). Piv txwv li, ntawm MM440, teeb P1300=20; ntawm SINAMICS G120C, teeb tsa hom kev tswj rau vector tswj nrog kev tawm tswv yim ceev.
- Nkag mus rau lub encoder qhov kev daws teeb meem (tus naj npawb ntawm cov pulses ib kiv puag ncig) yog li VFD tuaj yeem xam lub cav ceev kom raug.
- Teem lub sijhawm xav tau ceev thiab acceleration / deceleration lub sij hawm.
- Pab kom PI maub los thiab kho qhov proportional (P) thiab integral (I) nce yog xav tau. Siemens VFDs feem ntau muaj nws pib-tuning nta (xws li P1400 rau PI nce kev hloov kho lossis P1960 rau qhov ntsuas ntsuas) kom yooj yim dua.
- Ntsuam xyuas lub kaw lus kom paub tseeb tias cov lus qhia encoder ua haujlwm thiab lub cev muaj zog khiav ntawm qhov teeb tsa ceev.
Kauj Ruam 4: Ntsuas thiab Kho
Tom qab configure parameters, sim lub system. Khiav lub cev muaj zog ntawm qhov sib txawv ntawm qhov sib txawv thiab xyuas seb qhov ceev tiag tiag (los ntawm kev tawm tswv yim encoder) phim qhov teeb tsa ceev. Yog tias muaj qhov yuam kev me me, kho qhov PI nce lossis kev daws teeb meem encoder. Yog hais tias lub cev muaj zog oscillating (ua kom ceev thiab qeeb), kho cov resonance damping parameter (zoo li P1740 ntawm MM440) kom ruaj khov. Nws tseem yog ib lub tswv yim zoo los ntsuam xyuas lub kaw lus nyob rau hauv txawv load tej yam kev mob los xyuas kom meej nws tswj precision ceev tswj.
Cov txiaj ntsig ntawm Siemens VFD Kaw -Loop Control
Siemens VFD Kaw-Loop Control muaj ntau yam txiaj ntsig rau cov ntawv thov kev lag luam, los ntawm kev txhim kho qhov tseeb mus rau kev txuag hluav taws xob. Cia peb ua tib zoo saib cov txiaj ntsig zoo tshaj plaws, uas ua rau nws muaj kev xaiv nrov rau cov lag luam thoob ntiaj teb. Cov txiaj ntsig no ua raws li cov kev xav tau ntawm cov neeg siv khoom lag luam feem ntau, ua rau Siemens VFD Kaw -Loop Control ib qho kev txhim khu kev qha thiab tus nqi- siv tau zoo. Cov txiaj ntsig ntawm Siemens VFD kaw- kev tswj lub voj muaj xws li:
1. Siab dua Precision thiab sib xws
Raws li peb tau tham txog, Siemens VFD Kaw -Loop Control siv cov lus tawm tswv yim encoder kom ceev ceev, txawm tias thaum hloov pauv. Qhov kev sib raug zoo no ua kom cov khoom raug ua rau tib tus qauv txhua lub sijhawm, txo qhov tsis xws luag thiab pov tseg. Piv txwv li, hauv lub tshuab CNC, kev tswj ceev ceev kom paub meej tias kev txiav yog raug, ua rau zoo dua - qhov zoo. Siemens VFDs tuaj yeem tswj xyuas qhov tseeb hauv +/- 0.1% ntawm qhov teeb tsa ceev, uas yog qhov zoo dua li qhib- lub voj voog.
2. Kev txuag hluav taws xob
Siemens VFDs yog tsim los ua kom muaj zog- ua haujlwm tau zoo, thiab kaw- kev tswj lub voj voog txhim kho qhov no. Los ntawm kev kho lub cev muaj zog kom haum rau lub nra, VFD tsuas yog siv lub zog xav tau, tsis yog khiav lub cev muaj zog ntawm qhov nrawm txhua lub sijhawm. Qhov no tuaj yeem ua rau muaj kev txuag hluav taws xob tseem ceeb-ntau lub lag luam tshaj tawm txuag 10-30% ntawm lawv cov nqi hluav taws xob tom qab txhim kho Siemens VFD Kaw-Loop Control. Rau qhov sib txawv torque loads xws li cov twj tso kua mis thiab cov kiv cua, kev txuag nyiaj yuav ntau dua, txog li 70%.
3. Cov cuab yeej siv tau ntev dua
Kev nrawm nrawm thiab txo qhov kev ntxhov siab ntawm lub cev muaj zog txhais tau tias tsis tshua hnav thiab tsim kua muag. Siemens VFD Kaw-Loop Control txo qhov kev hloov pauv sai sai thiab cov khoom siv ntau dhau, uas tuaj yeem ua rau lub cev muaj zog thiab lwm yam khoom hauv lub tshuab puas. Qhov no txuas ntxiv lub neej ntawm lub cev muaj zog, encoder, thiab lwm yam khoom siv, txo cov nqi tu thiab sijhawm poob. Kev saib xyuas niaj hnub ntawm Siemens VFD thiab encoder tuaj yeem txuas ntxiv lub neej ntawm cov cuab yeej thiab tiv thaiv kev ua tsis tiav.
4. Kev thauj khoom zoo dua
Siemens VFD Kaw-Loop Control ua haujlwm hloov cov khoom thauj zoo dua li qhib- lub voj voog. Yog hais tias lub load nce (piv txwv li, lub conveyor nqa lub thawv hnyav dua), VFD tau hloov kho kom ceev ceev. Qhov no yog tshwj xeeb tshaj yog muaj txiaj ntsig rau cov ntawv thov nrog cov khoom sib txawv, xws li mixers, twj, lossis conveyors. Vector tswj (siv nyob rau hauv Siemens VFD Kaw-Loop Control) kuj muab tag nrho torque ntawm xoom ceev, uas yog pab tau rau cov kev siv xws li hoists los yog extruders uas yuav tsum tau tuav ib tug load tsis txav.
5. Kev sib koom ua ke yooj yim nrog cov txheej txheem kev lag luam
Siemens VFDs yog tsim los koom ua ke nrog lwm cov kev lag luam, xws li PLCs (Programmable Logic Controllers) thiab SCADA (Kev Tswj Xyuas Kev Tswj Xyuas thiab Cov Ntaub Ntawv Tau Txais) cov tshuab. Qhov no ua rau nws yooj yim los saib xyuas thiab tswj VFD los ntawm qhov chaw nruab nrab. Siemens VFDs kuj txhawb kev sib txuas lus raws tu qauv zoo li PROFINET thiab Modbus, ua kev koom ua ke nrog thib peb - cov cuab yeej cuab tam yooj yim. Piv txwv li, koj tuaj yeem siv Siemens TIA Portal los teeb tsa thiab saib xyuas VFD thiab cov lus qhia encoder, ua kom teeb tsa thiab daws teeb meem yooj yim dua.
Xaus: Vim li cas Siemens VFD kaw -Loop Control yog qhov kev xaiv zoo tshaj plaws rau Precision
Siemens VFD Kaw-Loop Control, ua ke nrog cov lus tawm tswv yim encoder, yog qhov kev daws teeb meem zoo tshaj plaws rau cov ntawv thov kev lag luam uas xav tau cov kev cai ceev ceev. Nws muaj qhov raug siab dua, txuag hluav taws xob, siv lub neej ntev dua, thiab kev tuav pov hwm zoo dua li qhib - lub voj voog. Txawm hais tias koj nyob hauv kev tsim khoom, ntim khoom, lossis lwm yam kev lag luam uas tso siab rau kev tswj lub cev muaj zog, Siemens VFD Kaw -Loop Control tuaj yeem pab koj txhim kho kev ua haujlwm, txo cov nqi, thiab ua kom cov khoom zoo sib xws. Kev teeb tsa Siemens VFD Kaw-Loop Control yog qhov yooj yim nrog Siemens 'tus neeg siv- tus qauv VFD tus phooj ywg thiab kev teeb tsa tsis meej. Thiab nrog cov kauj ruam daws teeb meem, koj tuaj yeem daws teeb meem sai sai. Los ntawm kev xaiv Siemens VFD Kaw-Loop Control, koj tab tom nqis peev rau hauv kev txhim kho kev ntseeg siab, ua haujlwm tau zoo, thiab kev tswj xyuas lub cev muaj zog uas yuav pab tau koj txoj kev lag luam ua tiav.
Yog tias koj npaj tau hloov kho koj lub cev tswj hwm lub cev, xav txog Siemens VFD Kaw -Loop Control nrog cov lus qhia encoder. Nws yog qhov kev xaiv ntse uas yuav them tawm hauv kev ua tau zoo dua, cov nqi qis dua, thiab kev ntseeg siab dua. Nco ntsoov, Siemens VFD Kaw-Loop Control yog tsim los kom yooj yim rau kev siv thiab sib koom ua ke, yog li koj tuaj yeem pib pom cov txiaj ntsig tam sim ntawd.
