描述
TRICONEX-3481
PLC机型选择的基本原则是:在功能满足要求的前提下,选择最可靠、维护使用最方便以及性能价格比最优的机型。通常做法是,在工艺过程比较固定、环境条件较好的场合,建议选用整体式结构的PLC;其他情况则最好选用模块式结构的PLC;对于开关量控制以及以开关量控制为主、带少量模拟量控制的工程项目中,一般其控制速度无须考虑,因此,选用带A/D转换、D/A转换、加减运算、数据传送功能的低档机就能满足要求;而在控制比较复杂,控制功能要求比较高的工程项目中(如要实现PID运算、闭环控制、通信联网等),可视控制规模及复杂程度来选用中档或高档机(其中高档机主要用于大规模过程控制、全PLC的分布式控制系统以及整个工厂的自动化等)。根据不同的应用对象,表1列出了PLC的几种功能选择。
PLC与工业生产过程的联系是通过I/O接口模块来实现的。PLC有许多I/O接口模块,包括开关量输入模块、开关量输出模块、模拟量输入模块、模拟量输出模块以及其他一些特殊模块,使用时应根据它们的特点进行选择。开关量I/O接口可从传感器和开关(如按钮、限位开关等)及控制设备(如指示灯、报警器、电动机起动器等)接收信号。典型的交流输入/输出信号为24~240V,直流输入/输出信号为5~240V。尽管输入电路因制造厂家不同而不同,但有些特性是相同的,如用于消除错误信号的抖动电路等。此外,大多数输入电路在高压电源输入和接口电路的控制逻辑部分之间都设有可选的隔离电路。在评估离散输出时,应考虑熔丝、瞬时浪涌保护和电源与逻辑电路间的隔离电路。熔丝电路也许在开始时花费较多,但可能比在外部安装熔丝耗资要少。
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主营DCS系统配件
机器人系统配件
大型伺服系统配件
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Redback SmartEdge 400 Chassis with modules SE400
Redback Ericsson SmartEdge EIM10GE-SE8-L3 SE400 SE800
SmartEdge 400/800 EIM10GE-SE8-L3 IPUIANSCAA
SmartEdge 400 EIM-SE8-1020GE IPUIANTCAA
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Redback Ericsson SmartEdge EIM2-SE8-L3-4GE
SmartEdge 400/800 AIM-SE8-L3-4OC3IR-SM SN56R08CAA
SmartEdge 400/800 OIM-SE8-L3-8OC3IR-SM
SmartEdge 400/800 OIM-SE8-L3-1OC48SRSC
Redback Ericsson SmartEdge XCR4-SE8-L3 XCRP4
SmartEdge 400/800 EIM-SE8-L3-4GE SN4PBFDCAA
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Smartedge 400/800 EIM-SE8-L3-12FE-TX SN4PCGECAA
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Redback Networks XCRP3 Smartedge Routing Card 908-0394
Redback SmartEdge 400/800 XCR3-SE8-L3 CLEI: SNRPDE0BAA
RedBack Ericsson SmartEdge EIM-SE8-L3-12FE-TX
Redback SmartEdge Chassis 800
Redback 908-0140 SmartEdge 800 OC-48 STM-16 SR
Redback 908-0285 SmartEdge 800 DS3/DDC
SMARTEDGE OC48 REDBACK 600-0235-01 600023501
REDBACK SMARTEDGE 800 DS3 600-0277-REV01
Redback 908-0105 SmartEdge 800 4-Port OC12
Redback 692-0135 – SmartEdge 800 Chassis
REDBACK OIM-SE8-4OC3IR SMARTEDGE 800 OPT OC3 SN03AFB
REDBACK OIM-SE8-OC48SRFC SMARTEDGE 800 OPT OC48 SN56B0G
REDBACK 600-0197/908-0104 SMARTEDGE 800 OPT OC SN03AEB
Redback 908-0103 SmartEdge 800 OC-3 IR 4 Port
Redback 908-0101 SmartEdge 800 XCRP Controller Card
REDBACK 600-0233 SMARTEDGE 800 SE800 OPT OC12 SN12AJE
SMARTEDGE 600-0202/908-0108 REV 01
SMARTEDGE 600-0231/908-0101 REV 01 CONTR CD
SMARTEDGE 600-0233/908-0105 REV 01
SMARTEDGE 600-0201/908-0102 REV 01
REDBACK SFP-GE-DWDMITU23 SMARTEDGE 800 OPT MODULE
Redback Networks XCRP 908-0101 SMARTEDGE 800
LOT 4 AIRMAGNET SMARTEDGE SENSOR AM-5010-11AG
NEW Air Magnet SmartEdge Sensor AM-5010-11AG
AirMagnet AM-5010-11AG Cryptographic SmartEdge Sensor
SMARTEDGE 16FT RECYCLED COMPOSITE EDGING SYSTEM NEW
SMARTEDGE 16FT RECYCLED COMPOSITE EDGING SYSTEM NEW
SMARTEDGE 16FT RECYCLED COMPOSITE EDGING SYSTEM
Air Magnet SmartEdge Sensor AM-5010-11AG Device
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XCR3-SE8-L3 Redback networks Smartedge Se800 se 800
Redback Networks XCRP3 Smartedge Routing Card 908-0394
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Redback Networks 1000/1800 CE2 OC-3C AC/DC Power
REDBACK NETWORKS SMS 500 ATM DS-3 DC Power
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REDBACK NETWORKS SMS 500 ROUTER OC-3 SMF AC ETHERNET
REDBACK NETWORKS SMS 500 ROUTER 2 OC-3 MMF DC ETHERNET
REDBACK NETWORKS 600-0202/908-0108 ETHERNET CARD
REDBACK NETWORKS 600-0158 SMS1000 CONTROL ENG VAPQABC
REDBACK NETWORKS 600-0231/908-0101 CONTROL CARD SNUX40X
RedBack Networks SMS 500 ATM/Ethernet/AC/Forwarding Eng
Redback Networks SMS 500 Chassis w/ 7 Cards WOW!
Redback Networks PIM-1K-8T1 8 Port ATM T1 SMS 1800
REDBACK NETWORKS AC POWER SUPPLY MODULE SMS-1800
Redback Networks AIM-500-DS3 Module
REDBACK NETWORKS * DWDM2GW1RBN08-002 * MUX8C1
RedBack Networks AIM-1K-2DS3 2-Port ATM DS3
REDBACK Networks SMS 500 ATM STS3c/STM1/DS3/E3 Card
REDBACK NETWORKS FE-1 CARD
REDBACK NETWORKS ATM DS-3 STS3C/STM1/DS3/E3 CARD
Redback Networks XCRP 908-0101 SMARTEDGE 800
Redback Networks SMS 1000/1800 Hardware Guide
REDBACK NETWORKS 908-0105 SMARTEDGE 800 4-PORT OC12
REDBACK NETWORKS 600-0231 SMARTEDGE 800 SC XCRP CARD