1756-IM16I/ABPLC模塊
控制系統(tǒng)可以根據(jù)生產(chǎn)的需要將液位分為多段來設(shè)定,并分段顯示,當(dāng)液位為低*自動啟動料泵加液,液位到達(dá)設(shè)定值時發(fā)出聲光報警,并停泵;操作人員可通過確認(rèn)按鈕解除音響報警信號,閃爍燈光轉(zhuǎn)平光;系統(tǒng)具有手動/自動兩種控制方式,并設(shè)有試驗功能。
目前在國內(nèi)市場上有從美國、德國、日本等國引進(jìn)的多種系列PLC,國內(nèi)也有許多廠家組裝、開發(fā)數(shù)十種PLC,故PLC系列標(biāo)準(zhǔn)不一,功能參差不齊,價格懸殊。在此情況下,PLC的選擇應(yīng)著重考慮PLC的性能價格比,選擇可靠性高,功能相當(dāng),負(fù)載能力合適,經(jīng)濟(jì)實惠的PLC。本文介紹以四段液位控制對象為例,據(jù)對多種因素的分析比較及監(jiān)控系統(tǒng)輸入、輸出點數(shù)的要求,選用日本立石(OMRON)公司C20P型PLC。
1756-IM16I/ABPLC模塊
1756-IB32 VDC INPUT 32PTS
1756-IC16 VDC INPUT 16PTS
1756-IF16 ANALOG INPUT-CURRENT/VOLTAGE 16PTS
1756-IF6I ISOLATED ANALOG INPUT-CURRENT/VOLTAGE 6PTS
1756-IF8 ANALOG INPUT-CURRENT/VOLTAGE 8PTS
1756-IH16I VDC ISOLOTED INPUT 16PTS
1756-IM16I VAC ISOLATED INPUT 16PTS
1756-IN16 VAC INPUT 16 PTS
1756-IR6I ISOLATED RTD INPUT 6PTS
1756-IT6I ISOLATED THERMOCOUPLE/MV INPUT 6PTS
1756-IV16 VDC SOURCING INPUT 16PTS
1756-L1 LOGIX5550 PROCESSOR, 64KBYTE USER MEMORY
1756-L1K CONFORMALLY COATED LOGIX 5550 PROCESSOR W/160KBYTE BASE MEMORY
1756-L1M1 LOGIX5550 PROCESSOR, 512KBYTE USER MEMORY
1756-L1M1K CONFORMALLY COATED LOGIX 5550 PROCESSOR W/512KBYTE BASE MEMORY
1756-L1M2 LOGIX5550 PROCESSOR W/ 1M BYTE EXPANSION MEMORY
1756-L1M2K CONFORMALLY COATED LOGIX5550 PROCESSPR W/1MBYTE EXPANSION MEMORY
1756-L1M3 LOGIX5550 PROCESSOR WITH 2MBYTE EXPANSION MEMORY
1756-L1M3K CONFORMALLY COATED LOGIX5550 PROCESSPR W/2MBYTE EXPANSION MEMORY
1756-M02AE 2-AXIS MOTION MODULE
1756-M08SE 1756 8 AXIS SERCOS SERVO MODULE
1756-M1 LOGIX5550 512KBYTE EXPANSION MEMORY
1756-M1K CONFORMALLY COATED LOGIX5550 EXPANSION MEMORY
1756-M2 LOGIX5550 1MBYTE EXPANSION MEMORY
1756-M2K CONFORMALLY COATED LOGIX5550 EXPANSION MEMORY
1756-M3 LOGIX5550 2MBYTE EXPANSION MEMORY
1756-M3K CONFORMALLY COATED LOGIX5550 EXPANSION MEMORY
1756-MVI CLX MULTI VEND INTF
1756-MVID MULTI-VENDR INTF DEV KIT
1756-N2 EMPTY SLOT FILLER CARD
1756-OA16 74-265 VAC OUTPUT 16PTS
1756-OA16I 74-265 VAC ISOLATED OUTPUT 16PTS
1756-OA8 74-265 VAC 2 AMP OUTPUT 8PTS
1756-OA8D 74-132 VAC DIAGNOSTIC OUTPUT 8PTS