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5X00241G02
5X00241G02
產品價格:¥3320(人民幣)
  • 規格:5X00241G02
  • 發貨地:廈門
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    商品詳情

      因為正本系統中多塊SDC控制表面出現缺點,在維修中選用plc對原系統做更換改造。正本控制系統結束對潔凈房室內溫度、濕度、室內外壓差進行查看并控制。室內空氣懇求為100級。空氣通過過濾后成為潔凈空氣,滿足出產線對空氣潔凈度、溫濕度的懇求。
      一. 系統工作原理
      新風機鼓入的新風經加熱交流器、制冷交流器、加濕器進入房間。房間內有溫度、濕度、差壓查看器測的信號反響給控制器。由反響信號通過數字控制儀來控制加熱、制冷交流器控制室內溫度。當濕度低時,由加濕器輸出蒸汽;濕度高時,制冷交流器要降溫以使空氣溫度降低,到達除濕目的。正本的濕度、溫度信號還要通過高選處理。當溫度信號高時,以溫度控制優先;當濕度信號高時,以濕度控制優先。正本表面調試比照冗繁,調試不簡略滿足懇求。加熱、制冷、加濕器的控制信號是4-20mA信號。壓力系統正本是由變頻器控制。本次改造并沒有觸及。
      二. 改造計劃
      溫度、濕度信號是變送器送出的DC 4-20mA 的信號。輸入的信號通過比照判別,當輸入的溫度信號小于12mA時,要實行加熱邏輯,當大于12mA時,要實行制冷邏輯。當輸入的濕度信號小于12mA時,要實行加濕邏輯,當大于12mA時,要實行除濕邏輯。而制冷和除濕信號中要選大的來控制制冷交流器。因為PLC有極好的邏輯判別才華及數據處理才華,改造中選用了臺達DVPSS系列PLC。SS系列是模塊式構造,可以根據懇求裝備不一樣的仿照模塊和數字量模塊。因為是改造,我們運用的數字量很少,僅用做缺點報警。DVP14SS CPU有8點輸入/6點輸出。根據我們需求又裝備了DVP04AD-S仿照輸入模塊和DVP04DA-S仿照輸出模塊。










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