140CRA93200、140CRA93200
140CRA93200、140CRA93200
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在工業(yè)現(xiàn)場控制領(lǐng)域,可編程控制器(PLC)一直起著重要的作用。隨著國家在供水行業(yè)的投資力度加大,水廠運行自動化水平不斷提高,PLC在供水行業(yè)應(yīng)用逐步增多。觸摸屏與PLC配套使用,使得PLC的應(yīng)用更加靈活,同時可以設(shè)置參數(shù)、顯示數(shù)據(jù)、以動畫等形勢描繪自動化過程,使得PLC的應(yīng)用可視化。 變頻恒壓供水成為供水行業(yè)的一個主流,是保證供水管網(wǎng)在恒壓的重要手段?,F(xiàn)代變頻器完善的網(wǎng)絡(luò)通信工程,威電機的同步運行,遠距離集中控制和在線監(jiān)控等提供了必要的支持。通過與PLC連接的觸摸屏,可以使控制更加直觀,操作更加簡單、方便。 組合應(yīng)用PLC、觸摸屏及變頻器,采用通信方式對變頻器進行控制來實現(xiàn)變頻恒壓供水。 系統(tǒng)結(jié)構(gòu) 變頻恒壓供水系統(tǒng)原理如圖1;它主要由PLC、變頻器、觸摸屏、壓力變送器、動力及控制線路以及泵組組成。用戶可以通過觸摸屏控制系統(tǒng)的運行,也可以通過控制柜面板上的指示燈和按鈕、轉(zhuǎn)換開關(guān)來了解和控制系統(tǒng)的運行。通過安裝在出水管網(wǎng)上的壓力變送器,把出口壓力信號變成4~20mA或0~10V標(biāo)準(zhǔn)信號送入PLC內(nèi)置的PID調(diào)節(jié)器,經(jīng)PID運算與給定壓力參數(shù)進行比較,輸出運行頻率到變頻器??刂葡到y(tǒng)由變頻器控制水泵的轉(zhuǎn)速以調(diào)節(jié)供水量,根據(jù)用水量的不同,PLC頻率輸出給定變頻器的運行頻率,從而調(diào)節(jié)水泵的轉(zhuǎn)速,達到恒壓供水。PLC設(shè)定的內(nèi)部程序驅(qū)動I/O端口開關(guān)量的輸出來實現(xiàn)切換交流接觸器組,以此協(xié)調(diào)投入工作的水泵電機臺數(shù),并完成電機的啟停、變頻與工頻的切換。通過調(diào)整投入工作的電機臺數(shù)和控制電機組中一臺電機的變頻轉(zhuǎn)速,使系統(tǒng)管網(wǎng)的工作壓力始終穩(wěn)定,進而達到恒壓供水的目的。
工作原理 該系統(tǒng)有手動和自動兩種運行方式。手動方式時,通過控制柜上的啟動和停止按鈕控制水泵運行,可根據(jù)需要分別控制1#~3#泵的啟停,該方式主要供設(shè)備調(diào)試、自動有故障和檢修時使用。自動運行時,首先由1#水泵變頻運行,變頻器輸出頻率從0HZ上升,同時PID調(diào)節(jié)器把接收的信號與給定壓力比較運算后送給變頻器控制。如壓力不夠,則頻率上升到50HZ,由PLC設(shè)定的程序驅(qū)動I/O端口開關(guān)量的輸出來實現(xiàn)切換交流接觸器組,使得1#泵變頻迅速切換為工頻,2#泵變頻啟動,若壓力仍達不到設(shè)定壓力,則2#泵由變頻切換成工頻,3#泵變頻啟動;如用水量減少,PLC控制從先起的泵開始切除,同時根據(jù)PID調(diào)節(jié)參數(shù)使系統(tǒng)平穩(wěn)運行,始終保持管網(wǎng)壓力。 若有電源瞬時停電的情況,則系統(tǒng)停機,待電源恢復(fù)正常后,人工啟動,系統(tǒng)自動恢復(fù)到初始狀態(tài)開始運行。變頻自動功能是該系統(tǒng)zui基本的功能,系統(tǒng)自動完成對多臺泵的啟動、停止、循環(huán)變頻的全部操作過程。
Allen Bradley 2711-B5A8 /H | PanelView 550 *REM*
Allen Bradley 2711-B5A2 /E | PanelView 550 #4
Allen Bradley 2711-K5A8 /H | PanelView 550 *NNB*
Allen Bradley 2711-B5A2 /H | PanelView 550 #2
Allen Bradley Panelview 550 Cat# 2711-K5A5 Ser E USED
Allen Bradley Panelview 550 2711-K5A5 In Enclosure Used
ALLEN BRADLEY PANELVIEW 550 M/N 2711-K5A2, 2711K5A2
Allen Bradley Panelview 550 2711-B5A2
Allen Bradley 2711-K5A2 /E | PanelView 550 #3
Allen Bradley 2711-K5A2 /F | PanelView 550 #9
Allen Bradley 2711-K5A8L1 /G | PanelView 550 *LNC*
Allen Bradley 2711-K5A2 /B | PanelView 550 #2
Allen Bradley 2711-B5A8 /H | PanelView 550 *NIB*
Allen Bradley PanelView 550, 2711-K5A2, Good Condition
DH485 Communication Ports with RJ-45 and Amp Connectors
Allen Bradley Panel View 550 2711-B5A2
Allen-Bradley 550 Panel View
Allen Bradley 2711-T5A10L1 27111T5A10L1 PanelView 550
ALLEN BRADLEY PANELVIEW 550 2711-K5A5 2711K5A5
Allen Bradley 2711-K5A1 Panelview 550 parts only
Allen Bradley Panel View 550 2711-B5A5/E
*NEW* AB Allen Bradley PanelView 550 # 2711-K5A10 BNIB
NEW!!! Allen Bradley Panelview 550 2711-K5A5 SER G
*SEALED* Allen Bradley 2711-T5A16L1 PanelView 550 02/10
Allen Bradley 2711-K5A9/H Panelview 550 2711K5A9/H
Allen Bradley 2711-K5A1 Panelview 550 2711K5A1 **XLNT*
Allen Bradley Panelview 550 2711 TSA2L1
Allen Bradley AB PanelView 550 2711-B5A2 SER/H 5.5"
ALLEN BRADLEY 2711-K5A10/H PANELVIEW 550 2711K5A10/H
Allen-Bradley 550 Panel View
ALLEN-BRADLEY 2711-T5A8L1 PanelView 550 ! WOW !
NEW Allen Bradley PanelView 550 Model 2711-K5A5L1
Allen Bradley 2711-T5A8L1 Panelview 550 2711T5AL1 *XLNT
*NEW* Allen Bradley 2711-K5A8 /H 2711K5A8 PanelView 550
*NEW* Allen Bradley AB 2711-T5A16L1 /B PanelView 550
Allen Bradley Panel View 550 2711-B5A8
Allen Bradley Panel View 550 2711-K5A2
Allen Bradley 2711-B5A20L1/H Panelview 550 2711B5A20L1
Allen-Bradley Panelview 550 Series F 2711-K5A2 ! WOW !
Allen Bradley Panelview 550 2711-B5A8 ser H
Allen Bradley 2711-B5A2 /H | PanelView 550
Allen Bradley Panel View 550 Good As Sealed. BNIB
Allen Bradley PanelView 550, 2711-B5A1, Good Condition
Remote I/O Communication and RS-232 Printer Port
Allen-Bradley panelview 550 model 2711-B5A2
ALLEN BRADLEY PANELVIEW 550 REPAIR PART 77131-103-01
Allen Bradley 2711-K5A5/B Panelview 550 2711K5A5/B
Allen Bradley 2711-B5A8 /F | PanelView 550
NIB ALLEN BRADLEY 2711-T5A2L1 PANELVIEW 550 TOUCH *
Allen Bradley 2711-T5A5L1 /B | PanelView 550 *LNC*
Allen Bradley 2711-K5A9 /H | PanelView 550 *LNC*
Allen Bradley 2711-K5A8 /H | PanelView 550 *LNC*
Allen Bradley 2711-T5A8L1 PanelView 550 DH+ Used
Allen Bradley 2711-K5A1L1 /H | PanelView 550 *LNC*
Nice AB Allen Bradley PanelView 550 2711-T5A20L1 Ser B
*NEW* Allen Bradley 2711-K5A5 /F 2711K5A5 PanelView 550
Allen-Bradley Panelview 550 Series F 2711-B5A8 ! WOW
*NEW* Allen Bradley AB 2711-T5A5L1 /B PanelView 550
ALLEN BRADLEY PANELVIEW 550 2711-K5A9 2711K5A9
REMAN Allen Bradley 2711-K5A20 /H PanelView 550 ENET
Allen Bradley 2711-K5A3/E PanelView 550 2711-K5A3/E
Allen Bradley 2711-B5A9/F Panelview 550 2711B5A9/F
Allen Bradley 2711- B5A3 Panelview 550 2711 B5A3
Allen Bradley 2711-K5A15 X/F Panelview 550 2711K5A15 X
Allen Bradley 2711-B5A5 /H | PanelView 550
ALLEN BRADLEY 2711-B5A8/F PANELVIEW 550 DISPLAY **RFB**
ALLEN BRADLEY PANELVIEW 550 CAT# 2711-B5A5 LNC!
LIKE NEW CONDITION ~$10 SHIPPING! INTL SHIP!
Enlarge
ALLEN-BRADLEY 2711-B5A2X PanelView 550 ! WOW !
Allen Bradley Panelview 550 2711-B5A8 ser H
Allen Bradley 2711-K5A2 /H | PanelView 550 *NIB*
AB Panelview 550 2711-K5A5 Ser.F Rev.J Frn.4.00
Allen Bradley 2711-B5A2 /H | PanelView 550 #6
ALLEN BRADLEY PANELVIEW 550 CAT# 2711-K5A8X LNC!
LIKE NEW CONDITION ~$10 SHIPPING! INTL SHIP!
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Allen Bradley 2711-T5A1L1 /B | PanelView 550
*REM* Allen Bradley 2711-K5A5 /F 2711K5A5 PanelView 550
Operator Interface Allen-Bradley 2711B5A2 PanelView 550
Allen Bradley 2711-K5A14/F Panelview 550 2711K5A14/F
AB Panel View 550 Interface, 2711-B5A1, Used WARRANTY!
Allen Bradley 2711-B5A8 /E | PanelView 550
Allen Bradley 2711K5A2X PanelView 550 *NNB*
Allen Bradley 2711-T5A16L1 /B | PanelView 550 *NIBFS*
ALLEN BRADLEY PANEL VIEW 550
Enlarge
Allen-Bradley Panelview 550 2711-T5A8L1 ! NEW !
NEW Allen Bradley 2711-T5A8L1 Panelview 550 2711T5A8L1
Panelview 550 2711-K5A1 New condition never been used
Enlarge
ALLEN BRADLEY 2711-K 5A5L1 PANEL VIEW 550
ALLEN BRADLEY 2711-T9C8 PANELVIEW 550 DISPLAY *NIB*
ALLEN-BRADLEY 2711-B5A2 Panelview 550 Series F ! WOW !
Allen Bradley 2711-T5A5L1X Panelview 550 2711T5A5L1X !
ABB / STROMBERG SAFT 171 PAC POWER SUPPLY BOARD
ABB SAFT 110 POW Power Supply 57411414
NEW ABB SAFT 151 CPD Keypad Board 57431849 JE
ABB SAFT 110 POW Power Supply 57411414
ABB STROMBERG POWERSUPPLY BOARD SAFT110POW SAFT 110 POW
ABB ALLEN BRADLEY 505757 CONTROL BOARD SAFT 185TBC
ABB SAFT 125 CHC CHOPPER CONTROL BOARD SAFT125CHC NFS
ABB SAFT 122 PAC Pulse Amplifier Board 5170042
ABB STORMBERG DRIVE SAFT-163-IOS 5809606 5761421-8G
ABB STROMBERG POWERSUPPLY BOARD SAFT110POW SAFT 110 POW
ABB Power Conn BOARD 58096652 SAFT 166 APC SAFT166APC
ABB STROMBERG POWERSUPPLY BOARD SAFT110POW SAFT 110 POW
ABB SAFT 136 CTS CTU Control Board 57418028
ABB STROMBERG SAFT-103-CON 57777290 PC CONTROL BD NEW
ABB SAFT 185 TBC Control Board 58119687
NOS! ABB CHOPPER CONTROL BOARD SAFT 125 CHC 125CHC
NEW ABB SAFT 158 EFS Earth Fault Protection Board
ABB SAFT 125 CHC CHOPPER CONTROL BOARD NIB
ABB/STROMBERG SAFT-103-CON/57?777290 PC CONTROL BD *NNB*
NEW ABB SAFT 183 VMC Control Board 58115479 CB
ABB/STROMBERG SAFT-123-PAC BOARD PULSE AMP***NIB***
NEW ABB SAFT 110 POW Power Supply 5310020
ABB/STROMBERG SAFT-110-POW POWER SUPPLY 115VAC *NIB
ABB PULSE AMPLIFER BOARD SAFT-121-PAC 57411503L NEW
ALLEN BRADLEY/ABB/STR?OMBERG 3500-IN2 SAFT-162-INP**N?NB*
1746-IA16 Allen Bradley Series C 1746IA16
MODICON AS-J878-000 MODEM MODULE ASJ878000
AS-BDEP-220 MODICON INPUT MODULE ASBDEP220
1746-IV16 ALLEN BRADLEY SER. C INPUT MODULE 1746IV16
X1582AH HONEYWELL XL500 WALL MOUNT TERMINAL
XH-561 HONEYWELL XL500 & EXT. WIRING BASE XH561
140-DDO-843-00 MODICON TSX QUANTUM 140DDO84300
536-765 SIEMENS/LANDIS & GYR 536765 V4 O.S. 12.5
1746-IB16 Allen-Bradley SLC 500 Input Module 1746-IB16
Cl114/220v MODICON CYBERLINE 1000 NEW 1100942
AS-BDAP-216N MODICON OUTPUT MODULE ASBDAP216N
TAYLOR ABB MOD 300 SC D/F MOD 6205BZ10000
AS-B825-016 MODICON INPUT MODULE ASB825016
TAYLOR MOD 300 IAC5 INPUT MODULES (50) 6000BB14511A
MODICON 140CFE03200 NEW SURPLUS 140-CFE-032-00
MODICON AS-B872-200 REM ASB872200 ANALOG OUTPUT MODULE
TAYLOR ABB MOD 300 I/O XFER 6015BZ10000
TAYLOR ABB MOD 300 CPU 6004BZ10300
AS-B827-032 MODICON INPUT MODULE ASB827032
TAYLOR ABB MOD 300 BACKUP MEM MOD 6014BZ10000
TAYLOR ABB MOD 300 MEM EXP MOD 6014BZ10000
SIEMENS/LANDIS & GYR - 533-685 533685
TAYLOR ABB MOD 300 CONTROLLER BOARD 6051NA10424
TAYLOR ABB MOD 300 I/O EXT. 6216BZ10000
TAYLOR ABB MOD 300 DCN INT. 6253BZ10000
TAYLOR ABB MOD 300 CNTLR FAN ASSY P/N: 6215FZ10100
TAYLOR ABB MOD 300 BCKUP MEM MODULE 6014BZ10100
TAYLOR ABB MOD 300 I/O EXT. MODULE 6016BZ10000
TAYLOR ABB MOD 300 DIGITAL CONTROLLER BD 6050NA10424
PCA984145 PC-A984-145 MODICON CPU MODULE
Simplex Fire Alarm Model 4120 MTHRDBD CLASS B 562-856
AM-S980-830 MODICON NETWORK CONTROLLER AMS980830
Simplex Fire Alarm Model 4120 LED/SWITCH CONT. 562-729
TSXWMY100 MODICON TSX PREMIUM FCHMI MODULE
TAYLOR ABB MOD 300 PROCESSOR 6024BZ10300
TAYLOR ABB MOD 300 TRANSFER MODULE 6215BZ10000
6EP13311SL11 SIEMENS POWER SUPPLY 6EP1 331-1SL11
TAYLOR ABB MOD 300 D/F MODULE 6005BZ10000
SIEMENS/LANDIS & GYR - 544-381 544381 UC BACKPLANE BRD
AS-BDAP-220 MODICON NEW FACTORY SEALED ASBDAP220
TAYLOR ABB MOD 300 FIELD BUS MODULE 6227BZ10200
TAYLOR ABB MOD 300 CPU 6024BZ10101
ALLEN BRADLEY 1771-A1B B 1771A1BB 4 Slot I/O CHASIS
Simplex Fire Alarm Model 4120 SIGNAL ZAM 562-617
NW-RR85-001 MODICON REPEATER NWRR85001
14506052-001 HONEYWELL EXCEL PLUS TERM. BD. 1450605201
MODICON TSX QUANTUM 140 CPS 124 00 140CPS12400
AS-E908-131 MODICON MEMORY MODULE ASE908131
ABB MOD 300 BULK POWER SUPPLY 6024NR14130
MODICON TSX QUANTUM 140DDO15310 5 VDC 140 DDO 153 10
TAYLOR ABB MOD 300 VIDEO MODULE 6008BZ10000
TAYLOR ABB MOD 300 PROCESSOR MODULE 6024BP10300
MODICON AS-B872-002 ASB872002 ANALOG OUTPUT MODULE
TAYLOR ABB MOD 300 SERIAL I/O MODULE 6007BG10000
TAYLOR ABB MOD 300 F-BUS INTERFACE 6203BZ10000
ABB MOD 300 FIELD BUS MODULE 2-CHANNEL P/N 6204BZ10200
ABB MOD 300 I/O XFER MODULE P/N 6215BZ10000
MODICON AS-B875-111 REM ASB875111 ANALOG INPUT MODULE
TSXETZ410 MODICON COMMUNICATION MODULE
SIEMENS PN: 545 701 LANDIS & GYR 545-701 PRE APOGEE
SIEMENS PTM62Y420 LANDIS & GYR - PTM6.2Y420
PC-E984-285 MODICON CPU MODULE PCE984285
SIEMENS PTM62I420 LANDIS & GYR - PTM6.2I420
538-955 SIEMENS TRUNK ISOLATOR/EXTENDER 538955
PC-E984-275 MODICON CPU MODULE PCE984275