IC693PTM101
IC693PTM101
IC693PTM101
IC693PTM101
鍋爐給水壓力的控制采用水泵變頻恒壓供水，通過安裝在出水管網(wǎng)上的壓力變送器，把管網(wǎng)壓力信號變成4～20mA的標(biāo)準(zhǔn)信號送入PLC（可編程控制器），PLC通過PID程序運算后，輸出轉(zhuǎn)速信號送給變頻器，由變頻器控制水泵電機(jī)的轉(zhuǎn)速，調(diào)節(jié)水泵的供水量，使供水管網(wǎng)上的壓力保持在給定的壓力值上。當(dāng)用水量超過或少于運行泵的供水量時，通過PLC控制切換進(jìn)行加泵或減泵，即根據(jù)用水量的多少由PLC控制工作泵的數(shù)量增減以及變頻器對運行泵的轉(zhuǎn)速調(diào)節(jié)，實現(xiàn)恒壓供水的目的。
變頻恒壓供水原理圖如圖2：
2.2除氧水箱水位的控制
除氧水箱水位的控制采用水泵變頻與工頻供水，通過安裝在除氧水箱上的差壓變送器，把水箱水位信號轉(zhuǎn)變成4～20mA的標(biāo)準(zhǔn)信號送入PLC，PLC通過PID程序運算后，得出輸出信號給變頻器，由變頻器控制電機(jī)的轉(zhuǎn)速，調(diào)節(jié)水箱給水量，使除氧水箱的水位保持在給定的水位上。給除氧水箱供水還包括冷凝水箱水位的控制，當(dāng)冷凝水箱水位高時，啟動冷凝水泵，當(dāng)冷凝水箱水位低時，停止冷凝水泵，防止冷凝水箱出現(xiàn)溢流現(xiàn)象，減少水源浪費。根據(jù)除氧水箱水位的高低，由PLC控制軟水泵和冷凝水泵數(shù)量及變頻器對軟水泵的轉(zhuǎn)速調(diào)節(jié)，實現(xiàn)恒水位供水。
2.3軟水箱水位的控制
軟水箱水位的控制采用電磁閥控制，通過安裝在軟水水箱上的差壓變送器，把水箱水位信號變成4～20mA的標(biāo)準(zhǔn)信號送入PLC，PLC通過PID運算后輸出控制信號，當(dāng)軟水水位低時，增加電磁閥開度，當(dāng)軟水水位高時，可減少電磁閥開度。
2.4 數(shù)據(jù)的采集與控制
水處理自動控制系統(tǒng)需要檢測和控制的工藝參數(shù)主要有：壓力、流量、液位、轉(zhuǎn)速、閥門開度、水泵的運行/停止、閥門的開/關(guān)、變頻器的運行/停止等等，系統(tǒng)共有模擬量輸入11路, 模擬量輸出4路，數(shù)字量輸入40路,數(shù)字量輸出20路。
Siemens Simatic MP370 12" Touch
Siemens Simatic MP370 12" Touch
*NEW* Allen Bradley AB 2711-T10C20 /F PanelView 1000
*NEW* Allen Bradley AB 2711-T10C20 /F PanelView 1000
*NEW* Allen Bradley 2711P-T10C15A1 PanelView Plus 100060 DAYS WARRANTY! Actual Cat.#2711P-T10C15A2 Double Mem
*NEW* Allen Bradley 2711P-T10C15A1 PanelView Plus 100060 DAYS WARRANTY! Actual Cat.#2711P-T10C15A2 Double Mem
Allen Bradley 2711-T10C10L1 /D PanelView 1000 DeviceNet
Allen Bradley 2711-T10C10L1 /D PanelView 1000 DeviceNet
*FS* Allen Bradley 2711P-T10C4D6 PanelView Plus 1000 CE60 DAYS WARRANTY! Ethernet & RS-232, Windows CE, 24V DC
*FS* Allen Bradley 2711P-T10C4D6 PanelView Plus 1000 CE60 DAYS WARRANTY! Ethernet & RS-232, Windows CE, 24V DC
Allen Bradley 2711-K6C10L1 2711-K6C10L1 PanelView 600
Allen Bradley 2711-K6C10L1 2711-K6C10L1 PanelView 600
Omron HMI NT11-SF121B-ECV1 (NT11SF121BECV1) NIB
Omron HMI NT11-SF121B-ECV1 (NT11SF121BECV1) NIB
*REM* Allen Bradley 2711P-T12C15B2 PanelView Plus 125060 DAYS WARRANTY! 2711PT12C15D2 + AC-to-DC Power Supply
*REM* Allen Bradley 2711P-T12C15B2 PanelView Plus 125060 DAYS WARRANTY! 2711PT12C15D2 + AC-to-DC Power Supply
STARRETT DATA COLLECTOR 742 COMPLETE VERY NICE (NEW?) Enlarge
STARRETT DATA COLLECTOR 742 COMPLETE VERY NICE (NEW?) Enlarge
FANUC OPERATOR INTERFACE MONITOR/KEYBOARD/TAPE READER
FANUC OPERATOR INTERFACE MONITOR/KEYBOARD/TAPE READER
SHARP ZM-40D 6" LCD TOUCH SCREEN DISPLAY PANEL OIP NEW
SHARP ZM-40D 6" LCD TOUCH SCREEN DISPLAY PANEL OIP NEW
Cincinnati Electrosystems Operator Display 5003-N12
Cincinnati Electrosystems Operator Display 5003-N12
TOTAL CONTROL QUICK PANEL QPI31200S2P-B 10.5 INCH COLOR Enlarge
TOTAL CONTROL QUICK PANEL QPI31200S2P-B 10.5 INCH COLOR Enlarge
NEW EOA INTELLIFLOW II LID 504561
NEW EOA INTELLIFLOW II LID 504561
Schneider Telemecanique Magelis Memory Card XBTMEM08
Schneider Telemecanique Magelis Memory Card XBTMEM08
Red Lion Controls -"Apollo" Inbligent Meter- IMP23103
Red Lion Controls -"Apollo" Inbligent Meter- IMP23103
Allen-Bradley PanelView 550 2711-B5A2 Ser. F REV. D
Allen-Bradley PanelView 550 2711-B5A2 Ser. F REV. D
ALLEN BRADLEY 1771-OG NIB
ALLEN BRADLEY 1771-OG NIB
Keyence RV2-52 LX2-70 LX2-12R,T Laser Measuring System
Keyence RV2-52 LX2-70 LX2-12R,T Laser Measuring System
Automation Direct C-More 10" Operator Interface
Automation Direct C-More 10" Operator Interface
ALLEN BRADLEY 2711 B5A1 SER.H REV.A PANELVIEW 550
ALLEN BRADLEY 2711 B5A1 SER.H REV.A PANELVIEW 550
NUMARK TOTAL CONTROL PRO DJ SOFTWARE CONTROLLER MIXER
NUMARK TOTAL CONTROL PRO DJ SOFTWARE CONTROLLER MIXER
Nematron IWS-200 operator interface HMI plc control
Nematron IWS-200 operator interface HMI plc control
ALLEN BRADLEY PANELVIEW 600 COLOR 2711-T6C15L1
ALLEN BRADLEY PANELVIEW 600 COLOR 2711-T6C15L1
Eaton IDT Panelmate 1000 Operator Interface.......
Eaton IDT Panelmate 1000 Operator Interface.......
ADVANTECH FPM-30CT-T TOUCH PANEL 10.4" AND VIDEO BD
ADVANTECH FPM-30CT-T TOUCH PANEL 10.4" AND VIDEO BD
ADVANTECH FPM 3120G-RAE TOUCH PANEL 12"
ADVANTECH FPM 3120G-RAE TOUCH PANEL 12"
Universal Micromodul Control Unit
Universal Micromodul Control Unit
5pcs 16-Key Membrane Switch Keypad (General-Use)
5pcs 16-Key Membrane Switch Keypad (General-Use)
REMEX - THE DIRECTOR - RS-232 TAPE CNC READER MACHINE Enlarge
REMEX - THE DIRECTOR - RS-232 TAPE CNC READER MACHINE Enlarge
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen-Bradley 1000 2711 T10G3 SER A
Allen-Bradley 1000 2711 T10G3 SER A
Mitsubishi F943G0T-SBD-RH Operational Terminal Teach
Mitsubishi F943G0T-SBD-RH Operational Terminal Teach
Allen Bradley 2711-K10C9 Panelview 1000 Ser. D Rev. C
Allen Bradley 2711-K10C9 Panelview 1000 Ser. D Rev. C
PRO-FACE GP430-EG11 / XY21 Graphic panel Digital(A1)
PRO-FACE GP430-EG11 / XY21 Graphic panel Digital(A1)
Keyence VT3-X15 Touch Panel Display Color
Keyence VT3-X15 Touch Panel Display Color
Allen Bradley Panelview 2711-B6C16 Ser B Rev K Frn 4.21
Allen Bradley Panelview 2711-B6C16 Ser B Rev K Frn 4.21
Beckhoff Industrial Computer/Monitor/Cables included
Beckhoff Industrial Computer/Monitor/Cables included
Target Systems Industrial Display Terminal,Series 4000,
Target Systems Industrial Display Terminal,Series 4000,
Telemechanique Magelis 10" Color Graphic Terminal
Telemechanique Magelis 10" Color Graphic Terminal
Allen Bradley AB PanelView 550 2711-B5A2 SER/H **WOW**2 available
Allen Bradley AB PanelView 550 2711-B5A2 SER/H **WOW**2 available
HMI Allen Bradley/Siemens/Omron/OPC/many othersUnlimited tags, graphics, connections, etc.
HMI Allen Bradley/Siemens/Omron/OPC/many othersUnlimited tags, graphics, connections, etc.
NEW CATERPILLAR GENERATOR GEN SET ALARM CONTROL PANEL
NEW CATERPILLAR GENERATOR GEN SET ALARM CONTROL PANEL
EZ Automation 10 inch Touch Screen Operator Interface
EZ Automation 10 inch Touch Screen Operator Interface
TP170B Color Operator Interface- NIB
TP170B Color Operator Interface- NIB
Rosemount FIC 4-20 MA
Rosemount FIC 4-20 MA
Rosemount FIC 4-20 MA
Rosemount FIC 4-20 MA
Monitouch V708iSD Touchscreen
Monitouch V708iSD Touchscreen
Triaxial MMA7260 Acceleration Sensor Mod Accelerometer
Triaxial MMA7260 Acceleration Sensor Mod Accelerometer
Allen-Bradley PanelView 300 20711-K3A17L1
Allen-Bradley PanelView 300 20711-K3A17L1
Allen-Bradley 2711-K5A1/X - PanelView 550 - 2711K5A1/X Manufacturer reconditioned / New In Original Box
Allen-Bradley 2711-K5A1/X - PanelView 550 - 2711K5A1/X Manufacturer reconditioned / New In Original Box
LEEDS AND NORTHRUP SPEEDOMAX 25000 RECORDER
LEEDS AND NORTHRUP SPEEDOMAX 25000 RECORDER
HALCO EDI-PGBDV1 OPERATOR INTERFACE PANEL ATM265/1298
HALCO EDI-PGBDV1 OPERATOR INTERFACE PANEL ATM265/1298
XYCOM 4810E OPERATOR INTERFACE TERMINAL
XYCOM 4810E OPERATOR INTERFACE TERMINAL
Automation Direct EZ-s6m-RS Enlarge
Automation Direct EZ-s6m-RS Enlarge
Keyence RV2-52 LX2-70 LX2-12R,T Laser Measuring System
Keyence RV2-52 LX2-70 LX2-12R,T Laser Measuring System
ALLEN BRADLEY 2711-B5A1 SERIES F REV G PANELVIEW 550
ALLEN BRADLEY 2711-B5A1 SERIES F REV G PANELVIEW 550
Automation Direct C-More 10" Operator Interface
Automation Direct C-More 10" Operator Interface
Rodix Feeder Cube Plus FC-92-4 Plus 121-8460 Dual Vibs
Rodix Feeder Cube Plus FC-92-4 Plus 121-8460 Dual Vibs
ALLEN BRADLEY 2711 B5A1 SER.H REV.A PANELVIEW 550
ALLEN BRADLEY 2711 B5A1 SER.H REV.A PANELVIEW 550
Nematron IWS-200 operator interface HMI plc control
Nematron IWS-200 operator interface HMI plc control
Allen Bradley 2711-T10C15 Panelview 1000 NIB
Allen Bradley 2711-T10C15 Panelview 1000 NIB
ALLEN BRADLEY PANELVIEW 600 COLOR 2711-T6C15L1
ALLEN BRADLEY PANELVIEW 600 COLOR 2711-T6C15L1
REMEX - THE DIRECTOR - RS-232 TAPE CNC READER MACHINE Enlarge
REMEX - THE DIRECTOR - RS-232 TAPE CNC READER MACHINE Enlarge
Allen-Bradley panel view plus 700 2711P-RDK7C
Allen-Bradley panel view plus 700 2711P-RDK7C
Eaton IDT Panelmate 1000 Operator Interface.......
Eaton IDT Panelmate 1000 Operator Interface.......
ADVANTECH FPM-30CT-T TOUCH PANEL 10.4" AND VIDEO BD
ADVANTECH FPM-30CT-T TOUCH PANEL 10.4" AND VIDEO BD
Allen Bradley AB 2711P-T12C4D1 /A PanelView Plus 125060 DAYS WARRANTY! 2711PT12C4D1 MFD DATE 12/2008
Allen Bradley AB 2711P-T12C4D1 /A PanelView Plus 125060 DAYS WARRANTY! 2711PT12C4D1 MFD DATE 12/2008
ADVANTECH FPM 3120G-RAE TOUCH PANEL 12"
ADVANTECH FPM 3120G-RAE TOUCH PANEL 12"
Universal Micromodul Control Unit
Universal Micromodul Control Unit
Allen Bradley 2711P-K7C4D1 /A PanelView Plus 700 COATED
Allen Bradley 2711P-K7C4D1 /A PanelView Plus 700 COATED
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Allen Bradley SLC 500 5/03 CAT#: 1747-L532 7 SLOT RACK VERY CLEAN - SLIGHTLY USED - TESTED! FULLY FUNCTIONAL
Siemens HMI 6AV6 640-0BA11-0AX0 (6AV66400BA110AX0) NIB?
Siemens HMI 6AV6 640-0BA11-0AX0 (6AV66400BA110AX0) NIB?
Allen-Bradley 1000 2711 T10G3 SER A
Allen-Bradley 1000 2711 T10G3 SER A
Mitsubishi F943G0T-SBD-RH Operational Terminal Teach
Mitsubishi F943G0T-SBD-RH Operational Terminal Teach
VGA to TFT LCD Converter Kit LQ104V1DG11 LQ10D367
VGA to TFT LCD Converter Kit LQ104V1DG11 LQ10D367
Allen Bradley 2711-K10C9 Panelview 1000 Ser. D Rev. C
Allen Bradley 2711-K10C9 Panelview 1000 Ser. D Rev. C
