AB 1784-PCMK

分類:
選擇深圳長欣,選擇放心,售后無憂
大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
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Email:sales@cxplcmro.com

描述

AB 1784-PCMK

DCS整體考慮方案,操作員站都具備工程師站功能,站與站之間在運(yùn)行方案程序下裝后是一種緊密聯(lián)合的關(guān)系,任何站、任何功能、任何被控裝置間都是相互連鎖控制,協(xié)調(diào)控制;而單用PLC互相連接構(gòu)成的系統(tǒng),其站與站(PLC與PLC)之間的聯(lián)系則是一種松散連接方式,是做不出協(xié)調(diào)控制的功能。
DCS在整個(gè)設(shè)計(jì)上就留有大量的可擴(kuò)展性接口,外接系統(tǒng)或擴(kuò)展系統(tǒng)都十分方便,PLC所搭接的整個(gè)系統(tǒng)完成后,想隨意的增加或減少操作員站都是很難實(shí)現(xiàn)的。
DCS安全性:為保證DCS控制的設(shè)備的安全可靠,DCS采用了雙冗余的控制單元,當(dāng)重要控制單元出現(xiàn)故障時(shí),都會(huì)有相關(guān)的冗余單元實(shí)時(shí)無擾的切換為工作單元,保證整個(gè)系統(tǒng)的安全可靠。PLC所搭接的系統(tǒng)基本沒有冗余的概念,就更談不上冗余控制策略。特別是當(dāng)其某個(gè)PLC單元發(fā)生故障時(shí),不得不將整個(gè)系統(tǒng)停下來,才能進(jìn)行更換維護(hù)并需重新編程。所以DCS系統(tǒng)要比其安全可靠性上高一個(gè)等級(jí)。
系統(tǒng)軟件,對(duì)各種工藝控制方案更新是DCS的一項(xiàng)最基本的功能,當(dāng)某個(gè)方案發(fā)生變化后,工程師只需要在工程師站上將更改過的方案編譯后,執(zhí)行下裝命令就可以了,下裝過程是由系統(tǒng)自動(dòng)完成的,不影響原控制方案運(yùn)行。系統(tǒng)各種控制軟件與算法可以將工藝要求控制對(duì)象控制精度提高。而對(duì)于PLC構(gòu)成的系統(tǒng)來說,工作量極其龐大,首先需要確定所要編輯更新的是哪個(gè)PLC,然后要用與之對(duì)應(yīng)的編譯器進(jìn)行程序編譯,最后再用專用的機(jī)器(讀寫器)專門一對(duì)一的將程序傳送給這個(gè)PLC,在系統(tǒng)調(diào)試期間,大量增加調(diào)試時(shí)間和調(diào)試成本,而且極其不利于日后的維護(hù)。在控制精度上相差甚遠(yuǎn)。這就決定了為什么在大中型控制項(xiàng)目中(500點(diǎn)以上),基本不采用全部由PLC所連接而成的系統(tǒng)的原因。

產(chǎn)品承諾:
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢價(jià)格,大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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Agilestar – 808-38222-AS – For IMC Networks – New in Bo

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Agilestar – SF1G-LX6C-33-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX6C-35-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX6C-37-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX6C-39-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX6C-41-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX6C-43-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX6C-45-AS – For FibroLAN – New in Box

Agilestar – 02312191-AS – For Huawei – New in Box

Agilestar – J4860A – For HP – New in Box

Agilestar – J4860B – For HP – New in Box

Agilestar – SFP-GIG-BX-D – For Alcatel-Lucent – NIB

Agilestar – SFP-GIG-BX-U – For Alcatel-Lucent – NIB

Agilestar – DGS-708 – For use in D-Link – New in Box

Agilestar – OC12-SFP-LR1 – For Foundry Networks – NIB

Agilestar – EX-SFP-1GE-LX40?K – Juniper – New in Box

Agilestar – SFP-100-LC-SM40 – For Alcatel-Lucent – NIB

Agilestar – SFP-DUAL-SM10 – For Alcatel-Lucent – NIB

Agilestar – FTLF1421P1BTL-A?S – For Finisar – New in Box

Agilestar – FTR-1419-AS – For Finisar – New in Box

Agilestar – SFP M1000LZ-AS – For Asante – New in Box

Agilestar – SMCBGZLCX1-AS – For SMC – New in Box

Agilestar – SMCBGZSCX1-AS – For SMC – New in Box

Agilestar – SPBD-1250A4Q1RT?-AS – For Delta – New in Box

Agilestar – SPBD-1250B4Q1RT?-AS – For Delta – New in Box

Agilestar – ONS-GC-GE-ZX – For Cisco – New in Box

Agilestar – AS-ZX-120 – For Agilestar – New in Box

Agilestar – FTLF1421P1BCL-A?S – For Finisar – New in Box

Agilestar – LC-GBIC-LX-AS – For Aruba – New in Box

Agilestar – C6400-GBIC-ZX – For Cisco – New in Box

Agilestar – BTI-MGBIC-GBD-L?C-AS – For Telco – New in Bo

Agilestar – BTI-MGBIC-GBU-L?C-AS – For Telco – New in Bo

Agilestar – NTTP04CF – For Nortel – New in Box

Agilestar – SFP-1OC48-SR – Juniper – New in Box

Agilestar – SU66AA – For use in Marconi – NIB

Agilestar – LCP-155B4MSRT-A?S – For Delta – New in Box

Agilestar – SU57AF-AS-ZX – For Marconi – New in Box

Agilestar – 808-38204-AS – For IMC Networks – New in Bo

Agilestar – 808-38215-AS – For IMC Networks – New in Bo

Agilestar – 808-38232-AS – For IMC Networks – New in Bo

Agilestar -RX-70KM-SFP – Juniper – New in Box

Agilestar – RX-70KM-SFP – For Juniper Networks – NIB

Agilestar – FTLX8571D3BCV-A?S – For Finisar – New in Box

Agilestar – E1MG-SX-OM – For Foundry Networks – NIB

Agilestar – FTLF1422P1BTL-A?S – For Finisar – New in Box

Agilestar – SPBD-1250A4Q1RD?-AS – For Delta – New in Box

Agilestar – SPBD-1250B4Q1RD?-AS – For Delta – New in Box

Agilestar – ONS-SI-622-I1 – For Cisco – New In Box

Agilestar – 200E-XBR-000802?-AS – For Brocade – New in B

Agilestar – ONS-SE-4G-MM – For Cisco – New in Box

Agilestar – SF1G-LX5-AS – For FibroLAN – New in Box

Agilestar – ONS-SE-100-FX – For Cisco – New in Box

Agilestar – ONS-SE-G2F-LX – For Cisco – New in Box

Agilestar – NTTP03CF – For Nortel – New in Box

Agilestar – TEG-MGBS40 – For TRENDnet- New in Box

Agilestar – SFP-OC12-IR – Juniper – New in Box

Agilestar – LCP-155A4HDRT-A?S – For Delta – New in Box

Agilestar – LCP-155B4JDRT-A?S – For Delta – New in Box

Agilestar – GSFIBER-SFP-50K – For Six Net – New in Box

Agilestar – GSFIBER-SFP-50K – Sixnet Networks – NIB

Agilestar – 808-38214-AS – For IMC Networks – New in Bo

Agilestar – SF1G-LX5C-27-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX5C-29-AS – For FibroLAN – New in Box

Agilestar – SF1G-LX5C-31-AS – For FibroLAN – New in Box


選擇深圳長欣,選擇放心,售后無憂大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
主營:本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”(不管能不能看懂,先了解個(gè)大概,以便學(xué)習(xí)編程時(shí)查找);
2、由位控邏輯入手,逐漸增加定時(shí)、計(jì)數(shù)等條件,把或、與、非關(guān)系理順;
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換;
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解(最好是有個(gè)物理回路驗(yàn)證,比如變頻器+電機(jī)+測速傳感器);
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制(盡量避免跳轉(zhuǎn),非跳不可時(shí)也是跳的越近越好);
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌,由于PLC的基本框架大同小異,學(xué)會(huì)一種至于其它的學(xué)習(xí)起來也就簡單了。