工業(yè)多通道自動(dòng)溫控控制儀簡(jiǎn)介:
宇電全新AI人工智能控制算法,支持多種輸入規(guī)格及模塊擴(kuò)展輸入輸出功能;可提供SSR、線性電流、可控硅觸發(fā)功能。支持宇電自主開發(fā)的AIBUS和MODBUS兼容通訊協(xié)議;通過通信協(xié)議控制器可以實(shí)現(xiàn)TCP等多種網(wǎng)絡(luò)連接方式;10mS快速通訊響應(yīng):無(wú)限參數(shù)寫入次數(shù):允許客戶自定義8個(gè)MODBUS通訊常用可讀寫參數(shù)連續(xù)排列,便于MODBUS協(xié)議用一條指令即可讀取常用參數(shù),提升通訊效率及性能。
先進(jìn)的平臺(tái)化模塊化設(shè)計(jì)結(jié)構(gòu),允許客戶選擇多種不同形式的外型尺寸面板及顯示操作界面,包括多種尺寸的盤裝數(shù)字
顯示型儀表、DIN導(dǎo)軌安裝型及帶曲線記憶及可編寫流程圖的TFT真彩觸摸屏等;允許客戶自由選擇安裝多種不同類型的輸入輸出模塊;允許客戶編輯操作權(quán)限及現(xiàn)場(chǎng)參數(shù)表,并可設(shè)定密碼,形成“定制"儀表。
設(shè)計(jì)使用溫度范圍寬達(dá)-10~+60度,實(shí)際PCB主板(不包括外殼)老化測(cè)試溫度高達(dá)100度。
超低自身能耗,無(wú)輸出時(shí)儀表耗電僅0.2~0.3W左右
防雷擊電源保護(hù),長(zhǎng)期誤接380VAC電源亦不會(huì)損壞儀表。
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工業(yè)多通道自動(dòng)溫控控制儀注意事項(xiàng):
1、溫控儀表應(yīng)按使用說明書的要求進(jìn)行正確的安裝與接線。在確認(rèn)接線準(zhǔn)確無(wú)誤的情況下,方可送電試機(jī)。
2、溫度設(shè)定值的正確與否,直接關(guān)系到工藝參數(shù)的執(zhí)行,進(jìn)而影響溫度的高低。因此,開機(jī)前應(yīng)認(rèn)真參照工藝參數(shù),選好溫度設(shè)定值,以免造成溫度偏差。對(duì)于動(dòng)圈式多通道溫控儀表,當(dāng)溫度在設(shè)定值范圍附近,指針高于或低于設(shè)定值,個(gè)別儀表指針會(huì)出現(xiàn)卡滯現(xiàn)象,遇到這種情況只要用手指輕輕敲擊儀表表面,指針便會(huì)回到設(shè)定值附近。
3、是死機(jī)現(xiàn)象。個(gè)別儀表(主要以數(shù)顯儀表居多)在開機(jī)的過程中如出現(xiàn)溫度高于設(shè)定值約(8~10)℃甚至更高仍有輸出,或低于設(shè)定值(8~10)℃甚至更低,且仍在延續(xù)這一現(xiàn)象的,即為死機(jī)現(xiàn)象。這主要是由儀表自身抗干擾能力下降引起,Zui常見的是接觸器或中間繼電器的動(dòng)作造成的電磁干擾。遇到這種情況,可關(guān)閉該儀表電源20s左右,再開機(jī)一般可消除。若不能消除,可請(qǐng)電氣員、電工及時(shí)處理,切不可自行處理,以免故障擴(kuò)大。
4、是熱電偶因素。由熱電偶引起的溫度儀表不準(zhǔn)的原因(除了劣質(zhì)產(chǎn)品外)基本有兩個(gè):一是分度號(hào)不匹配,原因是更換熱電偶時(shí)未仔細(xì)了解儀表分度號(hào),以至于錯(cuò)用其他分度號(hào)的熱電偶,其后果是使儀表的溫差偏大(十幾攝氏度到幾十?dāng)z氏度不等),使溫度處于失控狀態(tài),造成線纜表面發(fā)粗或燒焦現(xiàn)象。故更換熱電偶一定要細(xì)心,分度號(hào)不能錯(cuò)。二是熱電偶與檢測(cè)點(diǎn)接觸的松緊和深度也會(huì)引起儀表溫度的偏差。常見的錯(cuò)誤用法有:熱電偶直接夾在加熱圈內(nèi)或熱電偶直接淺放在檢測(cè)點(diǎn)的孔內(nèi),未加彈簧壓緊固定,這樣做的直接后果是不能反映該檢測(cè)點(diǎn)的真實(shí)溫度。正確的方法是將熱電偶垂直插入檢測(cè)孔內(nèi),小插入深度應(yīng)是保護(hù)管外徑的(5~8)倍且有彈簧固定,這樣才能反映其真實(shí)溫度。
5、對(duì)使用中的溫控儀表應(yīng)定期由計(jì)量部門進(jìn)行檢定。對(duì)檢定不合格的溫控儀表應(yīng)及時(shí)更換,以確保溫度數(shù)據(jù)的準(zhǔn)確,對(duì)新購(gòu)買的溫控儀表應(yīng)進(jìn)行使用前的檢定,然后再投入使用。