目前,在连续型流程生产自动控制(PA)或习惯称之谓工业过程控制中,有三大控制系统,即PLC、DCS和FCS。它们各自的基本特点如下:
1 PLC
(1)从开关量控制发展到顺序控制、运送处理,是从下往上的。
(2)连续PID控制等多功能,PID在中断站中。
(3)可用一台PC机为主站,多台同型PLC为从站。
(4)也可一台PLC为主站,多台同型PLC为从站,构成PLC网络。这比用PC机作主站方便之处是:有用户编程时,不必知道通信协议,只要按说明书格式写就行。
(5)PLC网格既可作为独立DCS/TDCS,也可作为DCS/TDCS的子系统。
(6)大系统同DCS/TDCS,如TDC3000、CENTUMCS、WDPFI、MOD300。
(7)PLC网络如Siemens公司的SINEC—L1、SINEC—H1、S4、S5、S6、S7等,GE公司的GENET、三菱公司的MELSEC—NET、MELSEC—NET/MINI。
(8)主要用于工业过程中的顺序控制,新型PLC也兼有闭环控制功能。
(9)制造商:GOULD(美)、AB(美)、GE(美)、OMRON(日)、MITSUBISHI(日)、Siemens(德)等。
福州卓凯电子科技有限公司联系人:小林
24小时咨询热线:17705012279
电话:0591-22983857
联系QQ:879520885
传真:0591-22989937
公司主营产品有:AB,ABB,GE,西门子,力士乐,施耐德,福克斯,等工业自动化控制配件及各种停产备件。诚信经营,质量可靠,请放心购买,我们将竭诚为您服务!
Varian StarCell High Vacuum Ion Pump
Varian TriScroll 300 EXPTS0300UVPIDF S4700-310 Vacuum Pump
Varian Turbo Pump Purge Fixture QF10 ports
Varian Turbo V-250 Controller Model 9699523S002
Varian Turbo-V 1000 ICE Vacuum Pump Controller
Varian Turbo-V 250 Macro Torr Pump Model 9699007
Varian Turbo-V 250 Model 9699523S002 Turbo-V 250 C.U. Controller
Varian Turbo-V 250 Model EX9699523 120V Turbo-V 250 C.U. Controller
Varian Turbo-V 300HT MacroTorr 969-9037S003 Turbomolecular Pump
Varian Turbo-V 300HT Vacuum Pump Controller
Varian Turbo-V 550 MacroTorr Vacuum Pump Model 969-9050
Varian Turbo-V80 A Model 969-9015 VA 180 V 54 Hz 1000
Varian TV301N Devicenet Model TV301DEV Turbo Pump Controller
Varian Vacuum Gauge Right Angle P/N: E32000047IIS Leak Rate 1x10 -9cc/Sec
Varian Vacuum Pump Controller Turbo-V 300HT
Varian Vacuum Pump Oil TA Oil 64742-65-0 100ml BOTTLE 969-9901
Varian VPI251205060 Vacuum Pump Isolation Valve W/ Peter Paul 51Z0001TCCD
Varian W1004 102298002 Rev. 06 Cable
VAT 0310X-CA24-AKK3/0913 A-1048421 Vacuum Gate Valve
VAT 08040-FA24-0002/0088 Vacuum Gate Circular Valve
VAT 08040-FA44-AAV1/0003 Vacuum Gage Circular Valve
VAT 24328-KA41-1001/0253 Vacuum Angle Valve
VAT 24332-KA41-1002/0339 Vacuum Valve W/ Honeywell Lucifer Solenoid
VAT 26340-QA21-AAS1/0001 Aluminum Angle Valve
VAT 26424-KA21-BOC1/0001 Right Angle Valve
VAT 26424-KA21-BOC1/0004 Right Angle Valve
VAT 26428-KA01-0001/8966 Angle Valve
VAT 26428-KA21-BKJ1/0005 Angle Valve ISO Flanges Pneumatic
Vat 29032-KA11-AAE1/0660 Angle Valve
Vat 29034-KA21-AAS3/0081 Angle Valve
VAT 300mm GATE Valve 0310X-CA24-AKK2/0006
VAT 362320/0048 A-1099835 Vacuum Gate Valve
VAT Aluminum Vacuum Gate Valve 12144-XA44-ALF1/0006 6”
VAT F08-103580/18 08040-FA44-1007 5” Gate Valve 10416-02
VAT Series 263 HV Angle Valve 26340-QA21-ADR1/0662 W/Pneumatic Actuator NIB
Vat Vacuum Gate Valve w/Pneumatic Actuator 12046-PA44-0003
VAT Valve 26428-KA11-BAV1/0694
VECTRON Laboratories 254-8164 Crystal Oscillator
Veeder Root C3420464 Totalizing Counter
Veeder-Root 743885-211 Panel Mount in box
Veriflo NPR 73530 Series Pressure Regulator w/2 gauges
Verify Instruments SD1024DL P/N: 1005379 Smart Spectrograph General Purpose
Verteq 1600-34 Process Systems Divistion Control Panel 120VAC 60/HZ 15 AMP
VERTEQ Matching Transformer 1056260.1 Matching Transformer P/N: 1067295.1
VERTEQ Matching Transformer P/N: 1069347.3 Transducer P/N: 1073728.1.1
Vetra Systems VIP-350-R PC Keyboard Extender System NIB
Vette Liquicool Vapac P/N: 1150646 Control Panel Board
Vexta PH266-01, 2 Phase stepping motor. Oriental Motor Co.
Vexta PK545-NB Stepping Motor
VEXTA PK5913AW 5-Phase 4.37V 1.4A Stepper Motor
Vexta PX244-02A, 2 Phase stepping motor. Oriental Motor Co.
Vexta Stepping Motor 2-Phase PH264-01B-A8 1.8*/STEP
Viatran Corporation VL20000M, 030541.002 5.3Watt Vac 90-370 Vdc Display Meter
Vicor DC-DC Converter VI-263-CY 24 VDC Input: 300 VDC
Vicor FlatPAC V1-LF1-CX Power Supply
Vicor FlatPAC V1-PU34-EUU Power Supply
Vicor FLATPAC VI-LF0-CV & VI-LFO-CU Power Supply Lot of 2
Vicor FLATPAC VI-LF0-CV Power Supply
Vicor HAM Line Filter P/N: 07818
Vicor Lot of 2 Converter V375B5C200AL & V300C3V3M75BN2
Vicor Mega Module DC-DC Converter VI-L60-CV 300VDC 5VDC
Vicor Mega Module DC-DC Converter VI-L62-CV 300VDC 5VDC
Vicor Mega Module DC-DC Converter VI-L6L-IY 300VDC
Vicor M-FIAM5BH13 FILTER Lot of 4
VICOR V24A28C400B2 Converter Module 28V 400Watt
Vicor V300A12M500BL 300 V 581.4 Watts 12 V 500 watts Out Module
Vicor V300B48T250AL 300 V Converter Module Lot of 2
Vicor VI-202-06 12VDC 100Watt DC Converter Lot of 15
Vicor VI-202-06 Converter Module 12VDC 100W
Vicor VI-243-EU Converter Module 24V 200W
Vicor VI-24L-EU 72 250/ 28 200 watts Converter Module
Vicor VI-910747 DC Converter IN 23V 565.9 Watts OUT 28V 498Watts
VICOR VI-MB44-CM Mega Module DC-DC
VICOR VI-MB44-CS Mega Module DC-DC
Vishay Dale TMC-50 50 Ohm 1% Resistors Lot of 10 Surplus
Vision Boxes Wizard VBI 1419 W/ Power Supply Model#GE354-3 W/Cable & Remote
Visolux P/N: 419280 ML4.1-8-H-40-IR/95/110 Photoelectric Sensor
VPT DELTA DVHF2812D DC-DC CONVERTER **** DFHF Series
VPT DELTA DVMH28 EMI FILTER **** DVMH Series
VWR 6244-6431 4 Channel Timer Lot of 10
W.C. Redmon Co. Rock On Model 4000 Hands-free Car Seat Rocker NIB
W.M. Berg 1/32 Flex Gear Drive Chain 2ft Un Surplus Lot of 20 32GCF
W.M. Berg 30 teeth Spur Gear 3mc20s-30 Lot of 20
WAGO Electronics InterBus-S Koppler 750-324 Increment Encoder Interface 750-631
Warner Electric Linear Actuator D24-05B5-24C 2300 634-9046CE 24VDC 11W
资讯来源:福州卓凯
|