伍德沃德WOODWARD-8440-1809-全新
價(jià)格
訂貨量(個(gè))
¥15620.00
≥1
店鋪主推品 熱銷潛力款
쑥쑢쑡쑠쑡쑡쑝쑣쑥쑡쑠
在線客服
廈門(mén)哲訊電氣自動(dòng)化有限公司
店齡6年 企業(yè)認(rèn)證
聯(lián)系人
黃經(jīng)理 銷售工程師
聯(lián)系電話
쑥쑢쑡쑠쑡쑡쑝쑣쑥쑡쑠
所在地區(qū)
福建省廈門(mén)市
一、PLC與DCS比較
如果按從弱至強(qiáng)將PLC與DCS的性能劃分為1至10個(gè)等級(jí),則可將它們的對(duì)比列于表1
表1PLC與DCS的比較
比較項(xiàng)目PLC控制DCS控制
高速順序控制106
復(fù)雜過(guò)程控制610
硬件可靠性98
聯(lián)網(wǎng)和通訊功能48
管理能力39
系統(tǒng)診斷和報(bào)警38
早期的PLC以數(shù)字量的順序控制為主。隨著PLC功能不斷擴(kuò)充,PLC增加了模擬量控制功能、PID調(diào)節(jié)功能、通訊聯(lián)網(wǎng)功能及分級(jí)控制功能等,在過(guò)去DCS占統(tǒng)治地位的化工、冶金等行業(yè)也可由PLC進(jìn)行控制。但PLC難以組成大型、復(fù)雜、綜合的系統(tǒng),如果過(guò)多的PC企圖通過(guò)網(wǎng)絡(luò)與過(guò)多的PLC通訊,則可能導(dǎo)致瓶頸現(xiàn)象及計(jì)時(shí)上的困難。
DCS是由模擬儀表控制系統(tǒng)發(fā)展而來(lái),初期的功能以回路調(diào)節(jié)為主,之后又加入了順序控制的功能。DCS的設(shè)計(jì)思想是操作管理集中,控制分散以提高整個(gè)系統(tǒng)的可靠性及管理能力。DCS的上述優(yōu)勢(shì)使它在控制系統(tǒng)的高端市場(chǎng)仍占主流。但DCS比PLC價(jià)位高,對(duì)一些資金有限的中小型企業(yè)有時(shí)難以承受。
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金品質(zhì),你選擇, 品質(zhì)超群惠選廈門(mén)哲訊電氣自動(dòng)化,
誠(chéng)信經(jīng)營(yíng),質(zhì)量為首,誠(chéng)信至上,竭誠(chéng)為您服務(wù)!
對(duì)待客戶,我們是認(rèn)真的。
【誠(chéng)信經(jīng)營(yíng)】【質(zhì)量可靠】【進(jìn)口原裝】【拆包防偽】
【大量庫(kù)存】【當(dāng)天付款】【順豐速運(yùn)】【歡迎搶購(gòu)】
ALCO CONTROLS FLANGE SET MODEL# RX-173 3LBS. 7/8" ODF
HUMPHREY PNEUMATIC CYLINDER MODEL # 4-DP-4 STROKE: 4.0" BORE: 2.0"
FABCO PNEUMATIC AIR CYLINDER # E121-XDR-BFR STROKE: 0.958"
DEUBLIN ROTARY UNION # 255-000-019 3/4"NPT TO 1/2"NPT
STRAHMAN VALVES 3/4" BRASS NOZZLE 1LB
SMC PNEUMATIC CYLINDER STROKE: 1.50" # NCGCN32-0150-XC?37 BORE: 32MM
SMC PNEUMATIC CYLINDER STROKE: +/-6" DUAL ENDED # NCGWBA50-0600-X?C37 BORE: 50MM
SAMCO TECHNOLOGIES HYDRAULIC CYLINDER TIE ROD 8" STROKE BORE: 2.5"
ASCO SOLENOID VALVE # WP8320A182 Q AIR 1/4"PIPE 125 PSI 120V. 60HZ. 13.9 WATTS
VERSA 4 WAY VALVE # KSG-4232-HCCA12?0
INGERSOLL RAND PNEUMATIC AIR CYLINDER # 2320-1009-100 10" STROKE
FESTO PNEUMATIC AIR CYLINDER # DSNU1-5/8-14-P 14" STROKE ROD DIA. 0.625"
HANKISON PNEUMATIC FILTER # HF1-12-3 CAT# 3240753
BALDOR SPEED REDUCER # S-926-10-H RATIO: 10:1 TORQUE: 1177 IN-LBS
SEW EURODRIVE GEARHEAD SPEED REDUCER# 80.25.10356.5/0?7 TYPE K46 RATIO: 35.63:1
SEW EURODRIVE GEARHEAD SPEED REDUCER RATIO: 48:1 1.25" BORE
TREND BI METAL THERMOMETER # TI.51 12" STEM -40 T0 120DEG F -40 TO 50DEG C
PARKER PILOT AIR SOLENOID VALVE MODEL# K605903553 WEIGHT: 4LBS
PIAB VACUUM PUMP MODEL# X20A5-BN 1 X 3/8"
ANTUNES CONTROLS PRESSURE SWITCH MODEL# RLGP-A 2" TO 14" WC WEIGHT: 2LBS
NUMATICS AIR FILTER ASSY. MODEL# F30B-06C WEIGHT: 3LBS
ALLEN BRADLEY TIME DELAY RELAY # 849-Z0D321
ALLEN BRADLEY TIME DELAY RELAY # 849-Z0A32
ALLEN BRADLEY TIME DELAY RELAY # 849-Z0D32
SMC SOLENOID VALVE # NVFS3200-3FZ WEIGHT: 1LBS
SMC SOLENOID VALVE # NVFS4100-5FZ WEIGHT: 2LBS
SMC MANIFOLD # NVV5FS4-01T-041 WEIGHT: 9LBS
NUMATICS INC. LUBRICATOR # L 30L04 WEIGHT: 3LBS.
FABCO PNEUMATIC AIR CYLINDER # E221-XK-BFR-MR STROKE: 1.437"
FABCO PNEUMATIC AIR CYLINDER # DSNV-32-80-PPV 3.25" STROKE ROD DIA. 12MM
FESTO PROXIMITY SWITCH # SME0-1-LED-24B 12-27VOLTS 1 AMP 27WATTS
BALDOR 3HP AC MOTOR # CM3704T 208-230/460VAC 60HZ. 1160 RPM 213TC FRAME
BALDOR 2HP SUPER-E SEVERE DUTY AC MOTOR 460VAC 60HZ. 1725RPM 145TC FRAME
BALDOR 2HP SUPER-E MARINE DUTY AC MOTOR 460VAC 60HZ. 1725RPM 143TC FRAME
LEESON 1HP AC MOTOR # 121520.00 208-230/460VAC 60HZ. 1170RPM 145T FRAME
BALDOR 1HP AC MOTOR CAT# M7015 230/460VAC 60HZ. 1750RPM HAZARDOUS DUTY
BALDOR BRUSHLESS AC SERVO MOTOR # BSM4F3-75-D 300VAC MAX. 4000RPM 8.03NM
BAYSIDE RIGHT ANGLE PLANETARY GEARHEAD # RA142-015 RATIO: 15:1 BORE: 0.625"
BALDOR GEARHEAD SPEED REDUCER #F-924-10-B7-G RATIO: 10:1 TORQUE: 893 IN-LBS.
BALDOR GEARHEAD SPEED REDUCER #F926-30-B5-G RATIO: 30:1 TORQUE: 1313 IN-LBS.
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