2711-K5A5L11【】2711-K5A5L11

2711-K5A5L11

一、輸入信號(hào)處理
1）輸入設(shè)備采用兩線(xiàn)式傳感器（如接近開(kāi)關(guān)）時(shí)，由于漏電流比較大，可能會(huì)產(chǎn)生錯(cuò)誤的輸入信號(hào)。要在輸入端并聯(lián)一旁路電阻。
2）輸入信號(hào)由晶體管提供，要求晶體管截止電阻大于10kΩ，導(dǎo)通電阻小于800Ω。~~~~~~~~~~~~~~~~~~~~~~~~~~~~
公司  名稱(chēng)：廈門(mén)泰尼電氣有限公司
固定  電話(huà)：0592-6809819
聯(lián)  系  人：張亮
傳      真：0592-6890859【請(qǐng)備注“張亮”收】
商 務(wù) Q  Q： 2314094943
手      機(jī)：18030028083
Q Q 郵  箱：2314094943@qq.com
需要可以聯(lián)系絕對(duì)給你滿(mǎn)意的價(jià)格
公司地址：廈門(mén)市海滄區(qū)海滄街道濱湖一里7號(hào)2008室
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二、plc的安全保護(hù)及提高可靠性的措施
1）短路保護(hù)
如果負(fù)載發(fā)生短路，很容易燒壞PLC，因此與繼電器控制線(xiàn)路一樣，在負(fù)載回路中要裝熔斷器。
2）感性輸入/輸出的處理
I/O端口接有感性元件時(shí)：
a)對(duì)直流電路，應(yīng)在兩端并聯(lián)續(xù)流二極管，如圖（a）；
通常續(xù)流二極管可選擇1A的管子，額定電壓應(yīng)大于電源電壓的3倍
b)對(duì)交流電路，應(yīng)并聯(lián)阻容電路，以抑制電路斷開(kāi)時(shí)產(chǎn)生的電弧對(duì)PLC的影響，如圖（b）。
電阻可取50～120Ω，電容取0.1～0.47μF，電容的額定電壓應(yīng)大于電源峰值電壓。

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
公司  名稱(chēng)：廈門(mén)泰尼電氣有限公司
固定  電話(huà)：0592-6809819
聯(lián)  系  人：張亮
傳      真：0592-6890859【請(qǐng)備注“張亮”收】
商 務(wù) Q  Q： 2314094943
手      機(jī)：18030028083
Q Q 郵  箱：2314094943@qq.com
需要可以聯(lián)系絕對(duì)給你滿(mǎn)意的價(jià)格
公司地址：廈門(mén)市海滄區(qū)海滄街道濱湖一里7號(hào)2008室
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