描述
DCS(Distributed Contorl System),集散控制系统,又称分布式控制系统。
PLC(Program Logic Control ),可编程逻辑控制器。
FCS(FieldBus Contorl Syestem),现场总线控制系统
发展到现在,DCS和PLC之间没有一个严格的界线,在大多数人看来,大的系统就是DCS,小的系统就叫PLC。当然,这么说也不是不可以,但是还不对。现在我们来重新建立这个观念。
首先,DCS和PLC 之间有什么不同?
从发展的方面来说。
DCS从传统的仪表盘监控系统发展而来。因此,DCS从先天性来说较为侧重仪表 的控制,比如我们使用的ABB Freelance2000 DCS系统甚至没有PID数量的限制(PID,比例微分积分算法,是调节阀、变频器闭环控制的标准算法,通常PID的数量决定了可以使用的调节阀数量)。
PLC从传统的继电器回路发展而来,最初的PLC甚至没有模拟量的处理能力,因此,PLC从开始就强调的是逻辑运算能力。
2、从系统的可扩展性和兼容性的方面来说。
市场上控制类产品繁多,无论DCS还是PLC,均有很多厂商在生产和销售。对于PLC系统来说,一般没有或很少有扩展的需求,因为PLC系统一般针对于设备来使用。一般来讲,PLC也很少有兼容性的要求,比如两个或以上的系统要求资源共享,对PLC来讲也是很困难的事。而且PLC一般都采用专用的网络结构,比如西门子的MPI总线性网络,甚至增加一台操作员站都不容易或成本很高。
DCS在发展的过程中也是各厂家自成体系,但大部分的DCS系统,比如西门子、ABB、霍尼维尔、GE、施耐德等等,虽说系统内部(过程级)的通讯协议不尽相同,但操作级的网络平台不约而同的选择了以太网络,采用标准或变形的TCP/IP协议。这样就提供了很方便的可扩展能力。在这种网络中,控制器、计算机均作为一个节点存在,只要网络到达的地方,就可以随意增减节点数量和布置节点位置。另外,基于windows系统的OPC、DDE等开放协议,各系统也可很方便的通讯,以实现资源共享。
产品承诺
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。
主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB ,AB ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。 专业销售进口DCS PLC系统备件模块
Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA 专业销售进口DCS PLC系统备件模块 15天包退换 一年质保 大量现货 国内实力库存商家
ABB SPECTRUM EHDB 360 EHDB360 360A DRIVE 120V COIL NEW
ABB SPECTRUM EHDB 650 EHDB650C1L 650A DRIVE CONTACTOR
ABB EHDB 650 Spectrum Drive Contactor 600VDC 650A
ABB EHDB220C-1L DRIVE CONTACTOR 3 POLE 220AM
ABB SK825484-AF CONTACTOR EHDB220-20-11
ABB EHDB 360
ABB EHDB 280 EHDB280C2P-1L 280A DC 120V coil * NEW
ABB SK824084-AF CONTACTOR EHDB130-20-11
ABB EHDB360C2P-1L 2 Pole Contactor Brand New 360 Amps
ABB Drive Contactor EHDB 130 EHDB130 EHDB-130 240VDC
MOORE PROCESS CONTROLLER 353A2F1NNNNNNAW
MOORE NULLMATIC CONTROLLER MODEL No. 561M NEW
Moore Products Differential Flow Controller 63BVUL
SIEMENS MOORE 320A2NNF DIGITAL CONTROLLER
Siemens Moore XTC 340 Transmitter-Controller NEW F1
MOORE DIFFERENTIAL FLOW CONTROLLER 2882S10DL (NIB)
Moore/Siemens 353A4F1NNNNNNA4 Controller
Moore 352 controller
MOORE PRODUCTS 509M NULLMATIC CONTROLLE
MOORE 535-2111000000 535 PROCESS CONTROLLER POWERTUNE
3 NEW Moore Flow Controller-Constant Differential Type
5 Moore Flow Controller 63S Constant Differential Type
Moore Products Nullmatic Controller 55MX-2*****
GM TOOL IDLE AIR CONTROLLER IAC MOTOR DRIVER
MOORE 694WL 13195-95N2 DIGITAL CONTROLLER
MOORE PRODUCTS 352EA21N1F PROCESS CONTROLLER PARTS ONLY
MOORE PROCESS CONTROLLER 353A2F1NNNNNNAW
MOORE NULLMATIC 3 MODE CONTROLLER MODEL 503
Moore 55A CONTROLLER; NEW 55A; *A9
Moore Liquid Level Controller Control 271s15tc 158904s2
MOORE NULLMATIC CONTROLLER 50MX-2 50MX2 14281-119S3
MOORE DIFFERENTIAL FLOW CONTROLLER 2882S10DL (NIB)
MOORE NULLMATIC CONTROLLER 524MT2
MOORE NULLMATIC CONTROLLER 509MH
MOORE PRODUCTS / NULLMATIC CONTROLLER 569MFW 524MT2
Moore Process Controller 535-210000000 new
Moore Products Co 352EA21NNF Controller USED
Moore Products Co 352EA21N1F Controller NEW
MOORE EQUATION STATION CONTROLLER MDS/PRG/PRG/10-30DC
MOORE TRANSMITTER CONTROLLER 340G3BH22B5 T530 DIAPHRAGM
MOORE 353 AUTO PROCESS CONTROLLER 353A2FNNNLNNNA4 240V
MOORE PRODUCTS 352EA21NNF PROCESS CONTROLLER BOARD
MOORE PROCESS CONTROLLER 385HA21NNAN BOARD MODULE
MOORE PRODUCTS 320A2NNN CONTROLLER BOARD TRANSMITTER
Moore Nullematic Syncro III Controller 502 *A13
MOORE 352E/372 PRESSURE CONTROLLER DIGITAL SINGLE-LOOP
MOORE INSTRUMENTS 63SU DIFFERENTIAL FLOW CONTROLLER
Moore Products 88D2 Air Flow Controller Unit
MOORE INSTRUMENTS 63SD DIFFERENTIAL FLOW CONTROLLER
Moore Constant Differential Type Flow Controller 63BD
MOORE NULLMATIC CONTROLLER MODEL 503
Moore Model 340G XTC Transmitter Controller 3 Pcs
Moore 503 Nullmatic Controller ; *A13
Moore Products Nullmatic Controller
(2) Moore 63A Constant Differential Flow Controller
MOORE 502F Pneumatic Controller New NIB
Moore 63BD-L Constant Differential Flow Controller
Moore Model 63A Constant Differential Flow Controller
Moore Automation Controller, m/n 884FIC, s/n GP6659-001
Moore 14499-88 Transmitter Controller B/M K70260-1 New
Moore Feedback Logic Controller Modules 15431-31;*cab3
Moore 14490-9 Transmitter Controller B/M14490-9 New
Moore 14888-3 Transmitter Controller B/M14888-3 New
Moore 502 Nullmatic Controller B/M K62734-001 New
Moore Controller 15214-21 NIB
M Moore 15219-1 PLC Logic Controller 152191
Moore Digital Panel Controller Model 352
Moore Nullmatic Two-Mode Pneumatic Controller 561-MFW
Moore Nullmatic Two-Mode Pneumatic Controller 502
NEW – Lot of 2 – Moore Flow Controller 63BU/M188
MOORE SYNCRO CONTROLLER BOX 528PM NEW IN BOX
MOORE SYNCRO CONTROLLER BOX 528RC5M-2F M48307-001
MOORE SYNCRO CONTROLLER BOX 528C3M 14803-/7KK
MOORE SYNCRO CONTROLLER BOX 528C3M NEW IN BOX
MOORE SYNCRO CONTROLLER BOX 528C3M2 NEW IN BOX
Moore 340 XTC Pressure/Controller *NEW*
383VA21N1F MOORE CONTROLLER – 1 YEAR WARRANTY – NIB
Moore XTC Transmitter Controller PN 340G4AH22BNNN13
Moore XTC Transmitter Controller PN 340D3AH12PNNN13
MOORE 348 FIELDPAK CONTROLLER – DEMO UNIT
15900-389 16300-503 MOORE CONTROLLER FEEDBACK KIT – NIB
MOORE 353A2FNNNNNNNA4 CONTROLLER 16353-119
SIEMENS/MOORE CCM+ QLCCM24AAN CONTROLLER MODULE
MOORE 535 PROCESS CONTROLLER 535-211500D000 V4.02
MOORE SYNCRO CONTROLLER BOX 528C3M 14480-251 NEW
MOORE SYNCRO CONTROLLER BOX 3601A2N 15250-6 NEW
Moore Siemens 63SD Differential Type Flow Controller
Moore Nullmatic Controller 50 MFY M24609-001 * NEW *
Lot 66 Moore Controller Umbilical Tubing New
MOORE IND. RIY/R0-0-250F/4-20MA/12-42DC CONTROLLER NEW!
NEW Moore Products Nullmatic Controller 55MX-2 55MX2
Moore Products 352 Digital Controller Model 352EANNNNF
M Moore 15221-11 PLC Logic Controller 1522111
M Moore 15431-41-15 PLC Logic Controller 154314115
M Moore 15431-41-17 PLC Logic Controller 154314117
M Moore 15431-41-13 PLC Logic Controller 154314113
M Moore 15431-31-16 PLC Logic Controller 154313116
M Moore 15431-31-14 PLC Logic Controller 154313114
M Moore 15431-31-13 PLC Logic Controller 154313113
M Moore 15222-1-24 PLC Logic Controller 15222124
M Moore 15218-1-23 PLC Logic Controller 15218123
M Moore 15215-1-20 PLC Logic Controller 15215120
M Moore 15215-1-19 PLC Logic Controller 15215119
M Moore 15214-41 PLC Logic Controller 1521441
M Moore 15212-1-24 PLC Logic Controller 15212124
M Moore 15212-1-22 PLC Logic Controller 15212122
M Moore 15212-11-23 PLC Logic Controller 152121123
M Moore 15212-11 PLC Logic Controller 1521211
M Moore 15211-21 PLC Logic Controller 1521121
PLC模块,可编程控制器,CPU模块,IO模块,AI模块,通讯模块。AB/施耐德/ABB/GE/本特利/西屋/英维斯/霍尼韦尔/黑马/FU克斯波罗
15天包退换 一年质保 大量现货 国内实力库存商家