IC670MDL740
IC670MDL740 plc控制軟件設(shè)計(jì)
（1）初始化子程序用于對高速計(jì)數(shù)器hsc0和hsc1進(jìn)行以下操作：寫控制字，定義工作模式，清零，寫設(shè)定值，設(shè)置定時(shí)中斷，連接中斷，啟動計(jì)數(shù)。
（2）制動油泵、潤滑油泵、動力制動電源、五通閥電磁鐵、四通閥電磁鐵和安全閥電磁鐵等的控制屬于交流提升機(jī)安全運(yùn)行所需輔助設(shè)備的控制。
（3）制動油過壓信號、制動油過熱信號和潤滑油過壓信號的顯示控制用于交流提升機(jī)工作狀態(tài)的顯示控制。
（4）調(diào)繩閉鎖回路是在調(diào)繩過程中起安全保護(hù)作用。雙卷簡提升機(jī)換水平調(diào)繩時(shí)，調(diào)繩轉(zhuǎn)換開關(guān)1hk-3斷開，使調(diào)繩連鎖環(huán)節(jié)串入安全回路。正常運(yùn)行時(shí)，lhk-3接通，調(diào)繩連鎖不起作用。
（5）提升信號回路用于對交流提升電動機(jī)啟動或減速作好準(zhǔn)備。
（6）位置測量子程序用于測量提升機(jī)在礦井中的位置。
（7）行程顯示子程序根據(jù)旋轉(zhuǎn)編碼器的脈沖個(gè)數(shù)來顯示當(dāng)前的行程位置。
（8）減速信號回路和減速信號鈴用于減速控制并且發(fā)出鈴聲提示信號。
（9）自動換向工作回路和手動正反轉(zhuǎn)工作回路分別用于自動和手動方式下對交流提升電動機(jī)進(jìn)行正反轉(zhuǎn)控制。
（10）安全回路用于防止和避免交流提升機(jī)發(fā)生意外事故。
（11）定時(shí)器控制回路和轉(zhuǎn)子電阻通斷控制用于交流提升電動機(jī)啟動或減速時(shí)的轉(zhuǎn)子電阻切換控制。
（12）動力制動回路用于動力制動電源的投入與切除控制。
（13）腳踏制動聯(lián)鎖和工作閘繼電器用于交流提升電動機(jī)制動控制。
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