描述
PERCEPTRON 916-4104
PLC與DCS的前景
我們已經(jīng)知道有的FCS是由PLC發(fā)展而來，而有的FCS是由DCS發(fā)展而來，那么，今天FCS已走向?qū)嵱没?，PLC與DCS前景又將如何。
PLC于60年代末期在美國首先出現(xiàn)，目的是用來取代繼電器，執(zhí)行邏輯、計(jì)時、計(jì)數(shù)等順序控制功能，建立柔性程序控制系統(tǒng)。1976年正式命名，并給予定義：PLC是一種數(shù)字控制專用電子計(jì)算機(jī)，它使用了可編程序存儲器儲存指令，執(zhí)行諸如邏輯、順序、計(jì)時、計(jì)數(shù)與演算等功能，并通過模擬和數(shù)字輸入、輸出等組件，控制各種機(jī)械或工作程序。經(jīng)過30多年的發(fā)展，PLC已十分成熟與完善，并開發(fā)了模擬量閉環(huán)控制功能。PLC在FCS系統(tǒng)中的地位似乎已被確定并無多少爭論。IEC推薦的現(xiàn)場總線控制系統(tǒng)體系結(jié)構(gòu),PLC作為一個站掛在高速總線上。編者以為，輔助車間的控制系統(tǒng)應(yīng)以遵循現(xiàn)場總線通訊協(xié)議的PLC或能與FCS進(jìn)行通訊交換信息的PLC為優(yōu)選對象。
自1973年提出第一臺以微處理器為基礎(chǔ)的控制器以來，它逐步完善，并最終形成功能齊全、安全可*的數(shù)字式分散控制系統(tǒng)DCS。它的性能大大優(yōu)于以住任何一種控制系統(tǒng)?？梢詽M足火電廠DAS、MCS、SCS和APS各系統(tǒng)的各種要求，目前還可以通過工業(yè)以太網(wǎng)建立管理層網(wǎng)絡(luò)，以滿足火電廠呼聲越來越高的加強(qiáng)管理的要求。可以這樣說，DCS系統(tǒng)的監(jiān)控可以復(fù)蓋大型火電機(jī)組的工藝全過程。
但是，自從有了FCS，并于90年代走向?qū)嵱没詠?，不斷有如下論點(diǎn)在公開刊物上發(fā)表，即：“從現(xiàn)在起，新的現(xiàn)場總線控制系統(tǒng)FCS將逐步取代傳統(tǒng)的DCS”；“當(dāng)調(diào)節(jié)功能下放到現(xiàn)場去以后，傳統(tǒng)的DCS就沒有存在的必要而會自動消失”；“今后十年，傳統(tǒng)的4~20mA模擬信號制將逐步被雙向數(shù)字通信現(xiàn)場總線信號制所取代，模擬與數(shù)字的分散型控制系統(tǒng)DCS將更新?lián)Q代為全數(shù)字現(xiàn)場總線控制系統(tǒng)FCS”……。這些論點(diǎn)歸納為一句話：FCS將取代DCS，DCS從此將消亡。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
Gel 8010AB11 Minicontroller Lenord+Bauer
SC14.1021 SANGALLI brushed DC servomotor with tacho
Masterspeed drive rack for MS-200 Axor drives NEW
ORN-SW-AM/0 ServoWire module Axis card made by ORMEC
ND31-3204XS-001?-000-00 EcoServ drive Lenord+Bauer USED
EPL84 gearbox ratio 5:1 made by EISELE
Gel 244 TAG5 Minicoder NEW Lenord+Bauer 5V Gel 244
SAC-SW217/EP ServoWire drive made by ORMEC
Gel 5452-5V counter Lenord+Bauer
SL30-13FH drive made by Westamp Inc.
Gel 8080S11 Minicontroller Lenord+Bauer
MDRM 24/8 BHLS 24V DC digital servo amplifier Mattke
ORN-DSP-A2/2A Rev 1.1b DSP Axis Module made by ORMEC
DS1044 LAM microstepping drive 50Vdc/4Arms/5.6?Apk NEW
I/O-14/08 Expansion Board for selected Servostar drives
DeviceNet board for selected Servostar drives
MAC-E002A2:101 brushless servo motor ORMEC
M51-317/1 mini PC personal controller made by SEI spa
DRS61-E4A08192 programmable incr. encoder NEW 10-32V
DRS61-A1A08192 programmable incr. encoder NEW 5V TTL
Mounting block to replace Siemens SIZAG with Gel244x
F64WKSMB motherboard for Kollmorgen Seidel 64WKS drives
DS1041 LAM microstepping drive 50Vdc/1.4Arms/2?Apk NEW
EKM71S-4.6 Brushless Servo Motor 2.5Nm, 6000rpm Koncar
Stepper Control Card for ORMEC GN3 made by nuLogic Inc.
GN3-DSP-A2/A Rev 3.0c DSP Axis Module made by ORMEC
3EF-50 Mains Filter KOLLMORGEN SEIDEL USED
REG 100 gearbox ratio 6:1 made by EISELE
EKM56-L4.6 Brushless Servo Motor 2Nm, 6000rpm Koncar
GEL 262 BE-00050-B20 magnetic incremental encoder, IP65
A27.25-E512 PAPST motor code: 933 2725 500 PAMOdrive
Gel108-TN01024D?000 5V encoder 1024ppr LenordBauer USED
Quin Systems Diagnostic Interface with ribbon cable NEW
SAC-E01A2 E-Series AC brushless servodrive ORMEC
Sercos interface board for selected Servostar drives
EKM56-M4.6 Brushless Servo Motor 1.2Nm, 6000rpm Koncar
CRT Eurocard chasis with 5″monitor made by SEI Italy
SM86.2.18.M6 stepper motor 2.5Nm Zebotronics USED
NE B 10-30-3-A1 Power Supply made by ASB
BKL-60/79-28mm & 28mm bores R+W metal bellows coupling
R60WKSMB motherboard for Kollmorgen Seidel 60WKS drive
ST3.6.1 Pre-Select Counter Zebotronics NEW
SHR200-400W MINICLAMP BRAKING PCB AXOR NEW
F65WKSMB motherboard for Kollmorgen Seidel 65WKS drive
STC SDX40E/180 telephone system
SHR140-400W MINICLAMP BRAKING PCB AXOR NEW
GN3-DSP-A2/A Rev 2.1d DSP Axis Module made by ORMEC
SHR200-200W MINICLAMP BRAKING PCB AXOR NEW
R03SMB motherboard for Seidel 03S drives
MRG500 Rubber coated precision Measuring Wheel 500mm
EKM56S-4.6 Servo Motor 0.75Nm, 6000rpm, 300V, Koncar
M21NRXA-JDN-NS-?00 Powermax II stepper motor 55W 1500rpm
SHR140-200W MINICLAMP BRAKING PCB AXOR NEW
MRM 500 Anodised metal precision Measuring Wheel 500mm
8PM.V2-XXX.001 connector made by Souriau
M1233062S8 LAM Stepper Motor 2ph 1.8deg 1.8Nm/4.2A NEW
Mini-S Control Terminal made by ICN in France
SHR060-100W MINICLAMP BRAKING PCB AXOR NEW
CBL-GMSW/25 ServoWire cable made by ORMEC USA
CBL-GMSW2/25′ G motor cable made by ORMEC USA
M51-315 motion control module made by SEI spa in Italy
RP/C60.1 motherboard Zebotronics new
BK5-15/63-25mm & 19mm plug-in segment bellows coupling
R03SMB motherboard for Seidel 03S drives
N56WKMB motherboard for Seidel 56WK power supply
PBX-R2-7.5 indexer card made by ICN in France
PBX-ES1 output module made by ICN in France
F60WKSMB motherboard for Kollmorgen Seidel 60WKS drives
BK2-30/69-24mm / 24mm bores R+W metal bellows coupling
60WKS-01 ramp option for Kollmorgen Seidel 60WKS drives
6 core x 5m power cable 4×1+2×0.75mm
Papst 194 0200 005 power supply
PBX-R2-1.5 indexer card made by ICN in France
專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
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