MM-PMC3-000
MM-PMC3-000工業(yè)現(xiàn)場(chǎng)的應(yīng)用環(huán)境要求PLC和工控機(jī)具有很高的可靠性,而可靠性是靠電磁兼容特性(EMC)和容錯(cuò)技術(shù)來保證的。PLC和工控機(jī)要經(jīng)過嚴(yán)格的電磁兼容檢測(cè),如輻射敏感度檢測(cè)、諧波/電壓波動(dòng)/電壓驟降檢測(cè)、靜電/快速脈沖/雷擊檢測(cè)、電磁干擾檢測(cè)等。EMC保證了設(shè)備在本質(zhì)上的抗干擾特性。但是,要保證控制設(shè)備不出故障是不可能的。因此,采用容錯(cuò)設(shè)計(jì)的系統(tǒng)對(duì)要求不能停機(jī)、不能失控的高可靠系統(tǒng)是十分重要的。目前重要的容錯(cuò)設(shè)計(jì)技術(shù)有Watchdog和雙機(jī)熱備(包括主機(jī)、模塊和通訊介質(zhì)的熱備)。熱備系統(tǒng)的工作對(duì)用戶來說是透明的:即當(dāng)故障發(fā)生時(shí),所有對(duì)故障點(diǎn)的切除和數(shù)據(jù)的備份都是在最短的控制周期內(nèi)自動(dòng)完成的。此項(xiàng)技術(shù)的完成包括了設(shè)備硬件和軟件二個(gè)方面。給出了PLC雙機(jī)冗余系統(tǒng)的結(jié)構(gòu)福州卓凱電子科技有限公司
AB 系列 優(yōu)勢(shì)1746 1756 1770 1771 1747 1336 PLC 系列觸摸屏 2711系列。
西門子 6ES7-300 6DD 6FC 6SC 6GK系列。
FANUC A06B A20B A02B 驅(qū)動(dòng)系列。
ABB DSQC 示教器 系列。
施耐德 140系列 PLC CPU 系列。
安川模塊伺服控制器。
GE IC693 IC697 系列。
價(jià)格優(yōu)勢(shì) 歡迎咨詢
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