描述
具体比较:
(1)DCS系统是个大系统,其控制器功能强而且在系统中的作用十分重要,数据公路更是系统的关键,所以,必须整体投资一步到位,事后的扩容难度较大。而FCS功能下放较彻底,信息处理现场化,数字智能现场装置的广泛采用,使得控制器功能与重要性相对减弱。因此,FCS系统投资起点低,可以边用、边扩、边投运。
(2)DCS系统是封闭式系统,各公司产品基本不兼容。而FCS系统是开放式系统,用户可以选择不同厂商、不同品牌的各种设备连入现场总线,达到最佳的系统集成。
(3)DCS系统的信息全都是二进制或模拟信号形成的,必须有D/A与A/D转换。而FCS系统是全数字化,就免去了D/A与A/D变换,高集成化高性能,使精度可以从±0.5%提高到±0.1%。
(4)FCS系统可以将PID闭环控制功能装入变送器或执行器中,缩短了控制周期,目前可以从DCS的每秒2~5次,提高到FCS的每秒10~20次,从而改善调节性能。
(5)DCS它可以控制和监视工艺全过程,对自身进行诊断、维护和组态。但是,由于自身的致命弱点,其I/O信号采用传统的模拟量信号,因此,它无法在DCS工程师站上对现场仪表(含变送器、执行器等)进行远方诊断、维护和组态。FCS采用全数字化技术,数字智能现场装置发送多变量信息,而不仅仅是单变量信息,并且还具备检测信息差错的功能。FCS采用的是双向数字通信现场总线信号制。因此,它可以对现场装置(含变送器、执行机构等)进行远方诊断、维护和组态。FCS的这点优越性是DCS无法比拟的。
(6)FCS由于信息处理现场化,与DCS相比可以省去相当数量的隔离器、端子柜、I/O终端、I/O卡件、I/O文件及I/O柜,同时也节省了I/O装置及装置室的空间与占地面积。有专家认为可以省去60%。
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
Quadtech Guardian 6100 Plus Electrical Safety Analyzer
QuadTech Guardian 12kV DC Hipot Tester w/ Accessories
QuadTech Guardian 5000 AC/DC/IR/GC Safety Analyzer
ILX Lightwave LDC-3916 16 calibrated 3916376 & 3916558
ILX Lightwave LDC-3916 Laser Diode Controller+3916334
ILX Lightwave LDC-3916 16Channel Laser Diode Controller
ILX Lightwave LDX-36018-35
ILX Lightwave LDC-3900 Laser Diode Controller+ ModuLe
ILX Lightwave LDC-3916
ILX Lightwave FOS-79710
ILX Lightwave LDT-5980
ILX Lightwave LDX-3690
ILX Lightwave LDP-3840B
ILX Lightwave LDX-3680
ILX Lightwave FOS-79800E/315C1
ILX Lightwave FOS-79800E/315L1
ILX Lightwave FOS-79800E/R
ILX Lightwave FOM-7900B
ILX Lightwave LDC-3722B. Laser Diode Controller
ILX Lightwave OMM-6810B Optical Multimeter *Warranty
ILX Lightwave LDX3620 Ultra Low-Noise Current Source
ILX Lightwave MPS-8035 Dual Channel Fiber Optic Sources
ILX Lightwave LDC-3752 6A laser driver/ 16W Temp Cont.
ILX Lightwave LDX-3650
ILX LIGHTWAVE LDX3232 HI COMPLIANCE LASER DIODE CURRENT
ILX Lightwave LDX-3220
ILX Lightwave LDC3742 Laser Diode Controller, 2 / 4A Cu
ILX Lightwave FPM-8200
ILX Lightwave LPA-9072 Laser Diode
ILX Lightwave LCM-39440
ILX Lightwave LDT5910B Thermoelectric Temperature Contr
ILX LIGHTWAVE MPS-8033 DFB Precision Fiber Optic
ILX LIGHTWAVE MPS-8024 1310 1550 FIBER OPTIC SOURCE DFB
ILX Lightwave LCM-39420
ILX Lightwave LDC-3916372
ILX Lightwave LDC-3916332
ILX Lightwave LDX-3620 Ultra Low Noise Current Source
ILX Lightwave LDD/TEC 3916376 Combo Module fr LDC 3916
ILX Lightwave FOS79800-315-1547.5 nm Precision Fiber Op
ILX Lightwave FOS79800-315-1556.2 nm Precision Fiber Op
ILX Lightwave FOS79800D-000-1312.00 nm Precision Fiber
ILX Lightwave FOS79800D-000 Laser Source Module 1536,23
ILX Lightwave FOS79800-315-1550.6 nm Precision Fiber Op
ILX Lightwave FOS79800D-000-1534.25 nm Precision Fiber
ILX Lightwave FOS79800D-000-1550.12 nm Precision Fiber
ILX Lightwave LDX3412 Precision Current Source
ILX Lightwave LDT5910B Thermoelectric Temp Controller
ILX Lightwave LDC3916332 500mA Dual Current Source Lase
ILX Lightwave 3 Amp current TEC Module 3916558 LDC 3916
ILX Lightwave Laser Diode driver LDD 3916334 LDC 3916
ILX LIGHTWAVE LDC-3752 LASER DIODE CONTROLLER / REPAIR
ILX Lightwave LCM39425 Combination Module (500 mA Curre
ILX Lightwave LDC3916376 1.5A Current Source / 9W Laser
ILX Lightwave FOM-7900B Test System *Warranty
ILX Lightwave LDT5910 Thermoelectric Temperature Contro
ILX Lightwave LDC-3916338
3A Current Source Module
ILX Lightwave LDC-3916558
3A Temperature Control Module
ILX Lightwave LCM39437 Current Source & TE Controller M
ILX Lightwave LDC3916372 0.5A Current Source / 9W Laser
ILX Lightwave LDX3207B Precision Current Source, 200mA
ILX Lightwave LDC-3916332 Module, Dual Current Source
with Warranty – Free Shipping
ILX Lightwave LDC3916338 3A Current Source Laser Diode
ILX Lightwave OMH-6727 InGaAs Power/WaveHead *Wty
79800B FIBER OPTIC SOURCE ILX LIGHTWAVE
ILX Lightwave TCM39032 32 W TEC Module
ILX LIGHTWAVE ILX LCM-39437 CURRENT TEC MODULE LDC-3900
ILX LIGHTWAVE ILX LCM-39437 CURRENT TEC MODULE LDC-3900
ILX LIGHTWAVE CSM 39800 CURRENT SOURCE MODULE LDC-3900
ILX lightwave LDX-3525 precision current source
ILX Lightwave LDT-5412
Thermoelectric Temperature Controller (4W)
ILX Lightwave LDX3207 Precision Current Source, 200mA
ILX LIGHTWAVE CSM 39400 CURRENT SOURCE MODULE LDC-3900
ILX Lightwave MPS 8033 Precision Fiber Optic Source 850
ILX Lightwave CSM39100 Current Source Module, 1000mA
ILX Lightwave LDC3916374 1A Current Source / 9W Laser D
ILX Lightwave LCM-39427, LCM39427 Current Source/TE Con
ILX Lightwave TCM-39032 32W TE Controller
ILX Lightwave LDX-3412 Precision Current Source,LDX3412
ILX Lightwave 3 Amp current TEC Module 3916558 LDC 3916
ILX Lightwave Precision Fiber Optic Source MPS-8033
ILX Lightwave OMH6708B -50 to +20dBm InGaAs Power Head
ILX Lightwave CSM39010 100mA Current Source Module
ILX Lightwave CSM39020 200 mA Current Source Module
ILX Lightwave CSM39050 500 mA Current Source Module
ILX Lightwave 79800D Precision Fiber Optic Source
ILX Lightwave MPS-8012 1550nm LED Fiber Optic Sources
ILX Lightwave FOS 79800D 315L2 1575.26nm Module
ILX Lightwave CSM-39050 Current Source Module
ILX Lightwave Combination Module LCM-39427
ILX Lightwave CSM-39020
ILX Lightwave CSM-39100
ILX Lightwave PDA6424 Photodiode Amplifier
ILX Lightwave LDM4984 Laser Diode Mount 14-pin Butterfl
ILX Lightwave LCM39440, LCM-39440 COMBINATION MODULE
LOT THORLABS ILX LIGHTWAVE LASER OPTICAL DETECTOR HEADS
ILX Lightwave LDM4970 Laser Diode Mount 14-pin Butterfl
ILX Lightwave LDM-4970 Laser Diode Mounts – Mint
ILX LIGHTWAVE LNF-320 Low Noise Filter
ILX Lightwave LDT-5910 Temp Controller LDT5910
Brand NEW ILX LIGHTWAVE LNF-320 Low Noise CW Filter
ILX LIGHTWAVE LDT-5910 Instruction Manual, Original
ILX LIGHTWAVE LDX-3207B PRECISION CURRENT SOURCE
ILX Lightwave LCM-39420 Instruction Manual
ILX Lightwave LDM-4980 Laser Diode Mount
ILX Lightwave LDX-3412 Precision Laser Diode Driver
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