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 <title><![CDATA[变频器报UV的原因]]></title>
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 <description><![CDATA[Latest 50 replies of 变频器报UV的原因]]></description>
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 <description><![CDATA[原因已查明了，是风扇引起的。由于无启动时母线电压正常，是风扇没有运转，当变频启动时，风扇跟着启动，由于有一个风扇内部短路，拉低24V电源，接触器释放，随后母线电压跟着下降。多谢各位了！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353286.html]]></link>
 <author><![CDATA[linxianqiang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 04 Oct 2012 05:17:10 +0000]]></pubdate>
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 <description><![CDATA[PE01--40721
PE04--365
试下。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353272.html]]></link>
 <author><![CDATA[静芳]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 04 Oct 2012 04:32:58 +0000]]></pubdate>
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 <description><![CDATA[风扇不转了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353249.html]]></link>
 <author><![CDATA[linxianqiang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 15:27:22 +0000]]></pubdate>
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 <description><![CDATA[有可以是风扇有问题引起开关电源输出电压拉地，从而出现UV故障。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353246.html]]></link>
 <author><![CDATA[seeyou]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 15:19:29 +0000]]></pubdate>
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 <description><![CDATA[P端电压下降，接触器和大电容有问题吧（顺便问下：为啥换风扇的呢？）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353245.html]]></link>
 <author><![CDATA[gzproe]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 15:11:43 +0000]]></pubdate>
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 <description><![CDATA[按5楼的说法应该是风扇问题了，因为换了风扇已正常，但是我想不明白，用万用表测量母线+-电压实际也是下降的，按道理内部24V短路（风扇烧）也不会造成母线电压下降的啊？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353244.html]]></link>
 <author><![CDATA[linxianqiang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 15:06:07 +0000]]></pubdate>
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 <description><![CDATA[内部24V短路也报UV的，我也遇到过]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353241.html]]></link>
 <author><![CDATA[米阑]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 14:38:23 +0000]]></pubdate>
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 <description><![CDATA[看看手册，看看故障那个代码？没有接触过这个牌子，所以帮不上你忙。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353201.html]]></link>
 <author><![CDATA[gumeng]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 12:20:49 +0000]]></pubdate>
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 <description><![CDATA[挂负载检测主整流电源电压]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353186.html]]></link>
 <author><![CDATA[my1234]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 11:38:34 +0000]]></pubdate>
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 <description><![CDATA[接触器没问题的，今天下午换了一个散热风扇又正常了，但心里不踏实，风扇会引起这样的故障吗？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353176.html]]></link>
 <author><![CDATA[linxianqiang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 11:01:28 +0000]]></pubdate>
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 <description><![CDATA[查一下变频器内接触器，可能是触点接触不良。蓄能电容失效。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405186#1353160.html]]></link>
 <author><![CDATA[makou]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 03 Oct 2012 10:25:25 +0000]]></pubdate>
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