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 <title><![CDATA[单相电机烧坏PLC点数]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797.html]]></link>
 <description><![CDATA[Latest 50 replies of 单相电机烧坏PLC点数]]></description>
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 <lastBuildDate><![CDATA[Mon, 06 Apr 2026 23:13:32 +0000]]></lastBuildDate>
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 <title><![CDATA[工控人家园]]></title>
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 <description><![CDATA[工控人家园]]></description>
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 <description><![CDATA[要加中间继电器]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1165830.html]]></link>
 <author><![CDATA[lvchunwan]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 16 Nov 2011 14:31:47 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[正反转时冲击电流造成的。最好加个中间继电器了！！！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163683.html]]></link>
 <author><![CDATA[dgredboy]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 14 Nov 2011 01:29:22 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[正转切换到反转时应停止一会在反转,你的情况是正转突然停下到反转时要经过制动在反转这样制动时电流过高烧坏的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163448.html]]></link>
 <author><![CDATA[wanggt]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 12:46:00 +0000]]></pubdate>
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 <description><![CDATA[分析一下当时情况，应该是正传，马上反转，这时反转是带载起车，电流要比空载大几倍。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163416.html]]></link>
 <author><![CDATA[weichangye]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 11:58:15 +0000]]></pubdate>
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 <description><![CDATA[1、三菱继电器交流220,额定是60VA，
2、电容充放电电流对触点上海非常大]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163325.html]]></link>
 <author><![CDATA[niningtt]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 09:19:36 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[带电机一定要带继电器，普通继电器或固态继电器都可以，电机可能会堵转，电压太低，或漏电，短路，过负载等现象出现，如果没有扩容，是很易出问题的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163318.html]]></link>
 <author><![CDATA[张平全]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 09:01:52 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC的输出可以带小功率的电磁阀和指示灯之类的,如果是直流负载的话要加续流二极管,交流就加阻容吸收.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163253.html]]></link>
 <author><![CDATA[kz1566]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 06:38:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163146.html]]></link>
 <author><![CDATA[ccy5156]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 03:16:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[扩大继电器容量才是硬道理啊！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1163092.html]]></link>
 <author><![CDATA[ying-feng]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 13 Nov 2011 01:59:00 +0000]]></pubdate>
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 <description><![CDATA[错了&nbsp;&nbsp;你那是交流的电机啊 我还以为是直流的电机呢 加继电器中转一下吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1162944.html]]></link>
 <author><![CDATA[baqqqqje]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 12 Nov 2011 15:01:42 +0000]]></pubdate>
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 <description><![CDATA[我说一定是继电器的PLC&nbsp;&nbsp;你加一个二极管就可以解决了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1162928.html]]></link>
 <author><![CDATA[baqqqqje]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 12 Nov 2011 14:51:21 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[加下二极管]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1162922.html]]></link>
 <author><![CDATA[baqqqqje]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 12 Nov 2011 14:47:20 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[只坏一路，是因为电机换向电流增大超过PLC继电器负载所致。一般PLC输出都要外接中间继电器。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1162892.html]]></link>
 <author><![CDATA[cdtyyang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 12 Nov 2011 14:27:57 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[西门子模块还是加中间继电器使用比较好]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1161872.html]]></link>
 <author><![CDATA[hubin1620]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 11 Nov 2011 07:19:36 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[是转换时瞬间短路，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1161711.html]]></link>
 <author><![CDATA[xtiqv]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 11 Nov 2011 03:19:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[启动电流按2.5~7倍的额定电流估算]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1161051.html]]></link>
 <author><![CDATA[inking0801]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Nov 2011 04:57:02 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你是用继电器的PLC直接带动电机？重来没有敢怎么用PLC。都是用继电器进行转换，不管是。PLC的输出端一般就能带动几安的负载。电机反转的时候，肯定会产生很大的电流。所以烧坏点很正常撒。用PLC接固态继电器进行控制是不错的选择。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1161022.html]]></link>
 <author><![CDATA[hejian96]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Nov 2011 04:48:12 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[超过了PLC输出的负载能力，PLC输出的负载一般为继电器和接触器，基本上不能直接拖动电机的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1161018.html]]></link>
 <author><![CDATA[llllll]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Nov 2011 04:44:58 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[中间加继电器保护是正道]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1161003.html]]></link>
 <author><![CDATA[secgo]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Nov 2011 04:25:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[50W的小电机啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1160995.html]]></link>
 <author><![CDATA[gsj791898717]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Nov 2011 04:23:10 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了，谢谢！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1160756.html]]></link>
 <author><![CDATA[3147018209]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Nov 2011 01:04:41 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[1，单相电机电容大小与电机功率大小有关。2,PIC的输出点是不能直接带电机的。多少瓦的电机？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1160606.html]]></link>
 <author><![CDATA[王建华]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Nov 2011 14:31:47 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC的触点电流小,带电机难哪,起动时主绕组有很大的电流,反转时电更大,都加上相应的继电器或接触器吧!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159822.html]]></link>
 <author><![CDATA[huosang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 14:57:57 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[大哥正反转瞬间电流得打了多少啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159607.html]]></link>
 <author><![CDATA[liweican89]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 12:04:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了&nbsp;&nbsp;谢谢 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159540.html]]></link>
 <author><![CDATA[hmq]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 10:36:19 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[正反转切换的时候转差率会很大，电流瞬间会非常大所以很容易烧坏触点。切换时应有短暂延时，必须外接中间继电器。电容的选择要根据分相绕组的感抗来选择，还要分是启动电容还是运转电容，启动电容比运转电容大很多，启动电容当成运转电容会烧坏电容还有烧坏绕组的可能，一定要注意。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159533.html]]></link>
 <author><![CDATA[kz1566]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 10:23:01 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[正转到反转切换时，由于反向电动势在断开的瞬间放电打火烧坏触点，加中继或一二极管就好了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159458.html]]></link>
 <author><![CDATA[ldq_yang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 08:15:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[如果是交流接触器建议在线圈两端并一个灭弧器，可延长PLC点的寿命。加直流中间继电器扩大触点容量在驱动接触器比较靠谱，在直流中间继电器线圈两端接一个IN4007的二极管作为虚流二极管也能延长plc输出点的寿命（针对继电器输出类型的PLC）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159453.html]]></link>
 <author><![CDATA[铭杰工控]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 08:11:35 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你这个问题我遇见过，不过我用的是电磁阀烧坏输出触点的，所以如果你不在中间加继电器的话必须在线中间并联一个二极管， 防止冲击电流]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159438.html]]></link>
 <author><![CDATA[jun888006]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 07:43:55 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[那这么说电容可以随便选吗 容量什么的？ 有个单相电机 怎么选他的电容呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-125797#1159336.html]]></link>
 <author><![CDATA[gsj791898717]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 08 Nov 2011 04:45:41 +0000]]></pubdate>
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