ACS880-304-0820A-7+A018+C188 ,ACS880-304-0820A-7+A018+C188 ACS880-304-0820A-7+A018+C188
CAN總線和人機界面在隧道窯控制系統(tǒng)中應用
此窯是一條80m長的燃氣隧道窯,共有溫度檢測點20個(K分度12個,S分度8個),其中10個溫度點受控,壓力檢測點2個,10個燃氣執(zhí)行器,10只燒嘴火焰檢測,風機有:排煙風機2臺(一用一備)、助燃風機2臺(一用一備)、急冷風機2臺(一用一備)、緩冷風機2臺(一用一備)、抽熱風機2臺(一用一備)、窯頭窯尾氣幕風機各1臺。10點溫度控制是通過控制執(zhí)行器閥位大小,改變?nèi)剂献⑷攵嗌伲瑥亩箿囟确(wěn)定。2點壓力控制通過調(diào)節(jié)排煙風機和急冷風機轉速來控制,即通過調(diào)節(jié)排煙和急冷變頻器頻率來控制壓力。此外還有風機連鎖,燒嘴熄火報警及各類故障報警。
3窯爐控制系統(tǒng)的組成
本控制系統(tǒng)由3臺嵌入式PLC(EASY-M2416R)、2臺CAN-AD1216、1臺CAN-AD1208、1臺CAN-DA1208等部分組成。其中,嵌入式PLC用于邏輯開關量的控制,PID運算,以及通過CAN總線與下級的模塊進行通訊;溫度采集模塊CAN-AD1216用來完成20點溫度模擬量的采集;壓力采集模塊CAN-AD1208用來采集2點壓力信號;模擬量輸出模塊CAN-DA1208用來控制風機變頻器。
下面為系統(tǒng)框架圖:
作為本系統(tǒng)的控制核心嵌入式PLC Easy-AD1216,下層網(wǎng)絡采用CAN總線來進行通訊,對上分別用RS0口與HMI(人機界面),RS1口與計算機進行通訊。其特點如下:
Giddings and Lewis Console Interface (Inv.30848)
Giddings & Lewis CPU Control Board (Inv.30853)
Giddings & Lewis ALV Board (Inv.30852)
Giddings & Lewis Address Generator (Inv.30849)
GE 44A398735-G02
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Allen Bradley 1770-TA Industrial CRT Terminal ! WOW !
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