描述:關(guān)于SMC真空電磁閥的選用,VQZ3351-5YZ1-X68-Q由緊急切斷回路等切斷DC電源時(shí),因其他電氣部件(電磁線圈等)發(fā)生過電壓,有可能造成閥誤動(dòng)作。應(yīng)有過電壓不向電磁閥回流的對策(過電壓保護(hù)用二極管等),使用帶逆接防止二極管的閥。
關(guān)于SMC真空電磁閥的選用,VQZ3351-5YZ1-X68-Q
使用真空發(fā)生器的回路中的換向閥,有供給閥和真空破壞閥。使用真空泵回路中的換向閥,有真空切換閥和真空選擇閥。
供給閥是供給真空發(fā)生器壓縮空氣的閥。
真空破壞閥是破壞吸盤內(nèi)的真空狀態(tài),將真空變成大氣壓或正壓力,使工件脫離吸盤的閥。真空切換閥就是接通或斷開真空壓力源的閥。真空選擇閥可控制吸盤對工件的吸著或脫離,一個(gè)閥兩個(gè)功能,可以簡化回路設(shè)計(jì)。
供給閥印設(shè)置于正壓管路中,可選用一般換向閥。真空破壞閥,真空切換閥和真空選擇閥設(shè)置于真空回路或存在有真空狀態(tài)的回路中,故必須選用能在真空壓力條件下工作的換向閥。真空換向閥要求不泄露,且不用油霧潤滑。故使用座閥式和膜片式閥芯結(jié)構(gòu)比較。通徑大時(shí)可使用外部先導(dǎo)式電磁閥。不給油潤滑的軟質(zhì)密封滑閥,由于其通用性強(qiáng),也常作為真空用換向閥使用。
VQZ ** 2 *,1000/2000/3000系列,5端口電磁閥,車身安裝
流體:空氣,惰性氣體
工作壓力范圍:0.1 - 0.7MPa
有效面積mm 2(Cv):
金屬密封2.0(0.11) - 12.6(0.7);
橡膠密封3.1(0.17) - 16.2(0.9)
線圈額定電壓:12,24VDC;
100,110,200,220VAC
響應(yīng)時(shí)間(ms)標(biāo)準(zhǔn)1W,高壓1.5W:
金屬密封25以下;橡膠密封30以下
環(huán)境溫度:-10?50℃
關(guān)于SMC真空電磁閥的選用,VQZ3351-5YZ1-X68-Q
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