SMC兩位五通雙電控電磁閥動作原理： 給(gei)正(zheng)(zheng)(zheng)動(dong)作(zuo)(zuo)(zuo)線圈(quan)通(tong)(tong)電(dian)，則正(zheng)(zheng)(zheng)動(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)路接(jie)(jie)通(tong)(tong)（正(zheng)(zheng)(zheng)動(dong)作(zuo)(zuo)(zuo)出氣(qi)(qi)孔(kong)有氣(qi)(qi)），即使給(gei)正(zheng)(zheng)(zheng)動(dong)作(zuo)(zuo)(zuo)線圈(quan)斷電(dian)后正(zheng)(zheng)(zheng)動(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)路仍(reng)然是接(jie)(jie)通(tong)(tong)的，將會(hui)一直(zhi)(zhi)維持到給(gei)反動(dong)作(zuo)(zuo)(zuo)線圈(quan)通(tong)(tong)電(dian)為止。 給(gei)反動(dong)作(zuo)(zuo)(zuo)線圈(quan)通(tong)(tong)電(dian)，則反動(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)路接(jie)(jie)通(tong)(tong)（反動(dong)作(zuo)(zuo)(zuo)出氣(qi)(qi)孔(kong)有氣(qi)(qi)），即使給(gei)反動(dong)作(zuo)(zuo)(zuo)線圈(quan)斷電(dian)后反動(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)路仍(reng)然是接(jie)(jie)通(tong)(tong)的，將會(hui)一直(zhi)(zhi)維持到給(gei)正(zheng)(zheng)(zheng)動(dong)作(zuo)(zuo)(zuo)線圈(quan)通(tong)(tong)電(dian)為止。這(zhe)相當于(yu)“自鎖”。 基于(yu)兩位(wei)五通(tong)(tong)雙電(dian)控電(dian)磁(ci)(ci)閥的這(zhe)種特性(xing)，在設計機(ji)電(dian)控制回路或編制PLC程序的時候(hou)，可(ke)(ke)以(yi)讓電(dian)磁(ci)(ci)閥線圈(quan)動(dong)作(zuo)(zuo)(zuo)1~2秒就可(ke)(ke)以(yi)了，這(zhe)樣(yang)可(ke)(ke)以(yi)保護電(dian)磁(ci)(ci)閥線圈(quan)不容易損(sun)壞。 日本SMC電(dian)磁(ci)閥(fa)(fa)在氣(qi)(qi)(qi)(qi)路（或液(ye)路）上來說(shuo)，兩(liang)位三通SMC電(dian)磁(ci)閥(fa)(fa)具有(you)1個(ge)(ge)(ge)進(jin)氣(qi)(qi)(qi)(qi)孔(kong)（接進(jin)氣(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)源）、1個(ge)(ge)(ge)出氣(qi)(qi)(qi)(qi)孔(kong)（提(ti)供(gong)給目(mu)標(biao)設(she)備(bei)氣(qi)(qi)(qi)(qi)源）、1個(ge)(ge)(ge)排氣(qi)(qi)(qi)(qi)孔(kong)（一(yi)般安裝一(yi)個(ge)(ge)(ge)消聲器，如(ru)果不怕(pa)噪音的話(hua)也可(ke)以不裝。 兩(liang)位五通電(dian)磁(ci)閥(fa)(fa)具有(you)1個(ge)(ge)(ge)進(jin)氣(qi)(qi)(qi)(qi)孔(kong)（接進(jin)氣(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)源）、1個(ge)(ge)(ge)正(zheng)動(dong)作(zuo)出氣(qi)(qi)(qi)(qi)孔(kong)和(he)1個(ge)(ge)(ge)反(fan)動(dong)作(zuo)出氣(qi)(qi)(qi)(qi)孔(kong)（分別(bie)提(ti)供(gong)給目(mu)標(biao)設(she)備(bei)的一(yi)正(zheng)一(yi)反(fan)動(dong)作(zuo)的氣(qi)(qi)(qi)(qi)源）、1個(ge)(ge)(ge)正(zheng)動(dong)作(zuo)排氣(qi)(qi)(qi)(qi)孔(kong)和(he)1個(ge)(ge)(ge)反(fan)動(dong)作(zuo)排氣(qi)(qi)(qi)(qi)孔(kong)（安裝消聲器）。 在電(dian)(dian)氣(qi)(qi)(qi)上(shang)來說，兩(liang)(liang)位(wei)(wei)三(san)通(tong)(tong)電(dian)(dian)磁閥一(yi)(yi)般為單電(dian)(dian)控（即單線(xian)(xian)(xian)圈(quan)(quan)），兩(liang)(liang)位(wei)(wei)五通(tong)(tong)電(dian)(dian)磁閥一(yi)(yi)般為雙電(dian)(dian)控（即雙線(xian)(xian)(xian)圈(quan)(quan)）。線(xian)(xian)(xian)圈(quan)(quan)電(dian)(dian)壓(ya)等級一(yi)(yi)般采用DC24V、AC220V等。 兩(liang)(liang)位(wei)(wei)三(san)通(tong)(tong)電(dian)(dian)磁閥分為常(chang)閉型和常(chang)開(kai)型兩(liang)(liang)種(zhong)，常(chang)閉型指線(xian)(xian)(xian)圈(quan)(quan)沒通(tong)(tong)電(dian)(dian)時(shi)氣(qi)(qi)(qi)路是斷的，常(chang)開(kai)型指線(xian)(xian)(xian)圈(quan)(quan)沒通(tong)(tong)電(dian)(dian)時(shi)氣(qi)(qi)(qi)路是通(tong)(tong)的。 常(chang)閉型兩(liang)(liang)位(wei)(wei)三(san)通(tong)(tong)電(dian)(dian)磁閥動作(zuo)原(yuan)理(li)：給線(xian)(xian)(xian)圈(quan)(quan)通(tong)(tong)電(dian)(dian)，氣(qi)(qi)(qi)路接通(tong)(tong)，線(xian)(xian)(xian)圈(quan)(quan)一(yi)(yi)旦斷電(dian)(dian)，氣(qi)(qi)(qi)路就會斷開(kai)，這相當(dang)于“點(dian)動”。 常(chang)開(kai)型兩(liang)(liang)位(wei)(wei)三(san)通(tong)(tong)單電(dian)(dian)控電(dian)(dian)磁閥動作(zuo)原(yuan)理(li)：給線(xian)(xian)(xian)圈(quan)(quan)通(tong)(tong)電(dian)(dian)，氣(qi)(qi)(qi)路斷開(kai)，線(xian)(xian)(xian)圈(quan)(quan)一(yi)(yi)旦斷電(dian)(dian)，氣(qi)(qi)(qi)路就會接通(tong)(tong)，這也是“點(dian)動”。 日本SMC電磁閥主要特點 1、外(wai)漏堵絕，內漏易控，使(shi)用安全 內(nei)外(wai)泄漏(lou)是危及安全的(de)要素。其(qi)它自控(kong)閥(fa)通常將閥(fa)桿(gan)伸出，由電動(dong)(dong)(dong)(dong)、氣動(dong)(dong)(dong)(dong)、液(ye)動(dong)(dong)(dong)(dong)執行機構控(kong)制閥(fa)芯(xin)的(de)轉動(dong)(dong)(dong)(dong)或移動(dong)(dong)(dong)(dong)。這都要解決長期動(dong)(dong)(dong)(dong)作閥(fa)桿(gan)動(dong)(dong)(dong)(dong)密封的(de)外(wai)泄漏(lou)難題；唯有電磁(ci)閥(fa)是用電磁(ci)力作用于密封在電動(dong)(dong)(dong)(dong)調節閥(fa)隔磁(ci)套管內(nei)的(de)鐵芯(xin)完成，不存在動(dong)(dong)(dong)(dong)密封，所以外(wai)漏(lou)易堵絕(jue)。電動(dong)(dong)(dong)(dong)閥(fa)力矩控(kong)制不易，容易產(chan)生(sheng)內(nei)漏(lou)，甚至拉(la)斷閥(fa)桿(gan)頭部；電磁(ci)閥(fa)的(de)結構型(xing)式(shi)容易控(kong)制內(nei)泄漏(lou)，直(zhi)至降為零(ling)。所以，電磁(ci)閥(fa)使用特別安全，尤(you)其(qi)適(shi)用于腐蝕性、有毒或高低溫的(de)介質。 2、系統簡(jian)單，便(bian)接電腦，價格低廉 電磁閥(fa)(fa)本身結構簡(jian)單，價格也低，比起調節(jie)閥(fa)(fa)等其它種類(lei)執行器易于安裝維護(hu)。更顯著的(de)(de)是(shi)(shi)所組成的(de)(de)自控系統簡(jian)單得(de)多(duo)，價格要低得(de)多(duo)。由于電磁閥(fa)(fa)是(shi)(shi)開關信號控制，與工控計算機(ji)連(lian)接十分(fen)方便。在當今電腦普及(ji)，價格大幅下降的(de)(de)時(shi)代(dai)，電磁閥(fa)(fa)的(de)(de)優勢就更加明顯。 3、動(dong)作快遞，功(gong)率微小，外形(xing)輕(qing)巧 電磁閥響應時(shi)間可(ke)以(yi)短至幾個毫秒，即使是先導式(shi)電磁閥也可(ke)以(yi)控制在幾十(shi)毫秒內。由于自(zi)成回路，比之其(qi)它自(zi)控閥反(fan)應更(geng)靈敏(min)。設計得(de)當的電磁閥線圈(quan)功率消耗(hao)很低，屬節能產品(pin)；還可(ke)做到只(zhi)需(xu)觸發動作(zuo)，自(zi)動保(bao)持閥位，平時(shi)一(yi)點也不耗(hao)電。電磁閥外形尺(chi)寸小，既節省空間，又輕巧美(mei)觀。 4、調節(jie)精(jing)度受限(xian)，適用介質受限(xian) 電磁閥通常(chang)只(zhi)有開(kai)關兩種(zhong)狀態(tai)，閥芯只(zhi)能處于兩個(ge)極限位置，不(bu)能連(lian)續調(diao)節，所以調(diao)節精度(du)還受到一定(ding)限制。 電(dian)磁閥(fa)對介質(zhi)潔凈度有(you)較高要(yao)求(qiu)，含顆(ke)粒狀的介質(zhi)不(bu)能適(shi)用(yong)，如屬雜質(zhi)須先(xian)濾去。另(ling)外(wai)，粘(zhan)稠狀介質(zhi)不(bu)能適(shi)用(yong)，而且，特(te)定的產品適(shi)用(yong)的介質(zhi)粘(zhan)度范圍(wei)相對較窄。 5、型號(hao)多樣，用途廣(guang)泛(fan) 電磁閥雖(sui)有先天不足，優(you)點仍十分(fen)突出(chu)，所以就設計成多(duo)種多(duo)樣的(de)產品，滿足各(ge)種不同的(de)需求(qiu)，用途極(ji)為廣(guang)泛(fan)。電磁閥技術(shu)的(de)進步也都是圍繞(rao)著如(ru)何(he)克服先天不足，如(ru)何(he)更好地(di)發揮固有優(you)勢而展開。
日本SMC電磁閥常見產品型號如下：
SY5120-BLZD-01
SY5120-BY-01F
SY5120-BYO-01F
SY5120-D2M-01
SY5120-1D-01
SY5120-1DZ-C6
SY5120-1DZ-C8
SY5120-1DZ-01
SY5120-1G-01
SY5120-1GD-C6
SY5120-1GD-01
SY5120-1GZ-01
SY5120-1H-C8
SY5120-1HZ-C6
SY5120-1LZ-C6
SY5120-1LZ-C8
SY5120-1LZ-01
SY5120-1M-C6
SY5120-1MOZ-C6
SY5120-2DO-01F
SY5120-2G-01
SY5120-2L-C6
SY5120-2LZD-01
SY5120-2M-01
SY5120-3DD-C6
SY5120-3DD-01
SY5120-3DZD-C4
SY5120-3DZD-C6
SY5120-3DZD-C8
SY5120-3DZD-01
SY5120-3DZD-01Q
SY5120-3GD-C6
SY5120-3GD-C8
SY5120-3GD-01
SY5120-3LD-C8
SY5120-3LD-01
SY5120-3LZ-01
SY5120-3LZD-C4
SY5120-3LZD-C6
SY5120-3LZD-01
SY5120-3LZD-01F
SY5120-3LZD-01Q
SY5120-3LZD01FQ
SY5120-3LZE-01
SY5120-3MZ-01
SY5120-3MZD-C6
SY5120-4D-01
SY5120-4DD-C6
SY5120-4DD-C8
SY5120-4DD-01
SY5120-4DD-02
SY5120-4DE-C6
SY5120-4DZ-C6
SY5120-4DZ-C6-Q
SY5120-4DZ-C8
SY5120-4DZ-C8-Q
SY5120-4DZ-01
SY5120-4DZ-01-Q
SY5120-4DZD-C4
SY5120-4DZD-C6
SY5120-4DZD-C8
SY5120-4DZD-01
SY5120-4DZE-01
SY5120-4GD-C6
SY5120-4GD-C8
SY5120-4GD-01
SY5120-4GE-01
SY5120-4GZD-01
SY5120-4HZE-C8
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