| 詳細(xì)參數(shù) | |||
|---|---|---|---|
| 品牌 | Emerson | 型號(hào) | WR-D4004MD-D4014B |
| 結(jié)構(gòu)形式 | 模塊式 | 安裝方式 | 控制室安裝 |
| LD指令處理器 | 硬PLC | 工作電壓 | 電源組24VDC |
| 輸出頻率 | 50/60赫茲 | 處理速度 | 1.6GHz |
| 程序容量 | 4GB | 數(shù)據(jù)容量 | 1g |
| 產(chǎn)品認(rèn)證 | UL | 環(huán)境溫度 | -40°Cto70°C |
| 環(huán)境濕度 | 5%to95%RH | 加工定制 | 否 |
Reliance WR-D4004 MD-D4014B
WR-D4004 MD-D4014B在系統(tǒng)正常運(yùn)行時(shí)，PLC的輸入、輸出信號(hào)和內(nèi)部的信號(hào)（如存儲(chǔ)器為的狀態(tài)）相互之間存在著確定的關(guān)系，如出現(xiàn)異常的邏輯信號(hào)，則說(shuō)明出了故障。因此可以編制一些常見(jiàn)故障的異常邏輯關(guān)系，一旦異常邏輯關(guān)系為ON狀態(tài)，就應(yīng)按故障處理。如機(jī)械運(yùn)動(dòng)過(guò)程中先后有兩個(gè)限位開(kāi)關(guān)動(dòng)作，這兩個(gè)信號(hào)不會(huì)同時(shí)接通。若它們同時(shí)接通，說(shuō)明至少有一個(gè)限位開(kāi)關(guān)被卡死，WR-D4004 MD-D4014B應(yīng)停機(jī)進(jìn)行處理。在梯形圖中，用這兩個(gè)限位開(kāi)關(guān)對(duì)應(yīng)的存儲(chǔ)器的位的常開(kāi)觸點(diǎn)串聯(lián)，來(lái)驅(qū)動(dòng)一個(gè)表示限位開(kāi)關(guān)故障的存儲(chǔ)器的位就可以進(jìn)行檢測(cè)。
Wr-d4004 md-d4014b during normal operation of the system, there is a definite relationship between PLC b, output signals and internal signals (such as the state of memory). If there is an abnormal logic signal, it indicates a fault. Therefore, the abnormal logic relationship of some common faults can be compiled. Once the abnormal logic relationship is on, it should be handled as a fault. If two limit switches act successively during mechanical movement, the two signals will not be connected at the same time. If they are connected at the same time, at least one limit switch is stuck, wr-d4004 md-d4014b shall be shut down for treatment. In the ladder diagram, the normally open contacts of the memory bs corresponding to the two limit switches are connected in series to drive the b of a memory indicating the fault of the limit switch
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