变频器的常用功能(3)
<P class=MsoDate><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．负载对加、减速时间的要求</SPAN></B><B><SPAN><FONT face="Times New Roman"> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></B></P><P class=MsoNormal><FONT face="Times New Roman"><B><SPAN><SPAN> </SPAN></SPAN></B><SPAN><o:p></o:p></SPAN></FONT></P><SPAN><BR></SPAN>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">6</FONT></SPAN></B><B><SPAN> <SPAN>制动电阻和制动单元</SPAN></SPAN></B><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">6</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">1</FONT></SPAN></B><B><SPAN> 作用与工况 </SPAN></B><B><SPAN><FONT face="Times New Roman"> <o:p></o:p></FONT></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">1</FONT></SPAN></B><B><SPAN>．能耗电路的作用</SPAN></B><B><SPAN><FONT face="Times New Roman"> <o:p></o:p></FONT></SPAN></B></P>
<P class=MsoDate><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoDate><B><SPAN><FONT size=3><FONT face="Times New Roman"><SPAN> </SPAN><o:p></o:p></FONT></FONT></SPAN></B></P><SPAN><BR></SPAN>
<P class=MsoDate><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．不同负载加、减速的工况</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">3</FONT></SPAN></B><B><SPAN>．连续发电时，能耗电路的工作特点</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><BR></SPAN></B><B><SPAN><FONT face="Times New Roman">6</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN> <SPAN>制动电阻的选择</SPAN></SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman"><SPAN> </SPAN>1</FONT></SPAN></B><B><SPAN>．制动电阻的粗略计算</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT size=3><FONT face="Times New Roman"><SPAN> </SPAN><o:p></o:p></FONT></FONT></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．用发热元件制作制动电阻</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN></B><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">1</FONT></SPAN><SPAN>）制动电阻的电路</SPAN></P>
<P class=MsoNormal><SPAN><FONT size=3><FONT face="Times New Roman"><SPAN> </SPAN><SPAN> </SPAN></FONT></FONT></SPAN></P>
<P class=MsoNormal><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">2</FONT></SPAN><SPAN>）电炉丝电阻值的计算：</SPAN><SPAN><FONT face="Times New Roman"> <o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>假设：</SPAN><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>P</I><SUB>B0N</SUB></FONT></SPAN><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>2</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>，</SPAN><FONT face="Times New Roman"><I><SPAN>U</SPAN></I><SUB><SPAN>B0N</SPAN></SUB></FONT><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>220</SPAN></I><SPAN>V<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>则：</SPAN><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>R</I><SUB>B0</SUB></FONT></SPAN><SPAN>＝</SPAN><SPAN><SPAN></SPAN></SPAN><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">24</FONT></SPAN></I><SPAN>.</SPAN><FONT face="Times New Roman"><I><SPAN>2</SPAN></I><SPAN>Ω<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN>注意：计算的电阻值是热态电阻，冷态时略小些。</SPAN></P><SPAN><BR></SPAN>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">6</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">3</FONT></SPAN></B><B><SPAN> <SPAN>制动单元的原理与代用 </SPAN></SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><FONT face="Times New Roman"><B><SPAN><FONT size=3><SPAN> </SPAN><SPAN> </SPAN></FONT></SPAN></B><B><SPAN>1</SPAN></B></FONT><B><SPAN>．制动单元的框图</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．用交流接触器做制动单元</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT size=3><FONT face="Times New Roman"><SPAN> </SPAN><o:p></o:p></FONT></FONT></SPAN></B></P><B><SPAN><BR></SPAN></B>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">3</FONT></SPAN></B><B><SPAN>．自制制动电阻和制动单元实例</SPAN></B><B><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><o:p></o:p></FONT></SPAN></B></P>
<P class=MsoNormal><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">1</FONT></SPAN><SPAN>）基本数据</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>电动机容量：</SPAN><FONT face="Times New Roman"><I><SPAN>37</SPAN></I><SPAN>kW<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN>原配制动电阻：</SPAN><FONT face="Times New Roman"><I><SPAN>20</SPAN></I><SPAN>Ω</SPAN></FONT><SPAN>，</SPAN><FONT face="Times New Roman"><I><SPAN>5</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face="Times New Roman"><I><SPAN>P</SPAN></I><SUB><SPAN>B0</SPAN></SUB></FONT><SPAN>＝</SPAN><SPAN><SPAN></SPAN></SPAN><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>21</SPAN></I><SPAN>kW<SPAN> </SPAN><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><B><I><SPAN>α</SPAN></I></B><B><SUB><SPAN><FONT face="Times New Roman">B</FONT></SPAN></SUB></B><B><SPAN>＝</SPAN></B><B><SPAN><SPAN></SPAN></SPAN></B><B><SPAN>＝</SPAN></B><I><SPAN><FONT face="Times New Roman">0</FONT></SPAN></I><SPAN>.</SPAN><I><SPAN><FONT face="Times New Roman">24<o:p></o:p></FONT></SPAN></I></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">2</FONT></SPAN><SPAN>）代用计算</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>用</SPAN><I><SPAN><FONT face="Times New Roman">9</FONT></SPAN></I><SPAN>根</SPAN><FONT face="Times New Roman"><I><SPAN>2</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>的发热元件串、并联，如图</SPAN><SPAN><FONT face="Times New Roman">3</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">43</FONT></SPAN><SPAN>所示。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>则：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>合成电阻：</SPAN><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>R</I><SUB>B</SUB></FONT></SPAN><SPAN>＝（</SPAN><I><SPAN><FONT face="Times New Roman">24</FONT></SPAN></I><SPAN>.</SPAN><I><SPAN><FONT face="Times New Roman">2</FONT></SPAN></I><SPAN>÷</SPAN><SPAN><FONT face="Times New Roman">3</FONT></SPAN><SPAN>）×</SPAN><SPAN><FONT face="Times New Roman">3<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">24</FONT></SPAN></I><SPAN>.</SPAN><FONT face="Times New Roman"><I><SPAN>2</SPAN></I><SPAN>Ω<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN>冷态电阻值接近于</SPAN><FONT face="Times New Roman"><I><SPAN>20</SPAN></I><SPAN>Ω</SPAN></FONT><SPAN>。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>功率：</SPAN><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>2</I></FONT></SPAN><SPAN>×</SPAN><I><SPAN><FONT face="Times New Roman">9</FONT></SPAN></I><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>18</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>电阻耐压为：</SPAN><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>U</I><SUB>BN</SUB></FONT></SPAN><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">220</FONT></SPAN></I><SPAN>×</SPAN><I><SPAN><FONT face="Times New Roman">3</FONT></SPAN></I><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>660</SPAN></I><SPAN>V<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN>修正系数增大为：</SPAN><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><B><I><SPAN>α</SPAN></I></B><FONT face="Times New Roman"><B><SUB><SPAN>B</SPAN></SUB></B><B><SPAN>’</SPAN></B></FONT><B><SPAN>＝</SPAN></B><B><SPAN><SPAN></SPAN></SPAN></B><B><SPAN>＝</SPAN></B><I><SPAN><FONT face="Times New Roman">0</FONT></SPAN></I><SPAN>.</SPAN><FONT face="Times New Roman"><I><SPAN>86</SPAN></I><SPAN><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">3</FONT></SPAN><SPAN>）接触器选择：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>I</I><SUB>B</SUB></FONT></SPAN><SPAN>＝</SPAN><SPAN><SPAN></SPAN></SPAN><SPAN>＝</SPAN><SPAN><SPAN></SPAN></SPAN><SPAN>＝</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>选</SPAN><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>I</I><SUB>KN</SUB></FONT></SPAN><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>40</SPAN></I><SPAN>A</SPAN></FONT><B><SPAN> </SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P><B><SPAN><BR></SPAN></B>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">7</FONT></SPAN></B><B><SPAN> 变频器的主要保护功能</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">7</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">1</FONT></SPAN></B><B><SPAN> 过载保护的对象与原因分析</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><FONT face="Times New Roman"><B><SPAN><SPAN><FONT size=3> </FONT></SPAN></SPAN></B><B><SPAN>1</SPAN></B></FONT><B><SPAN>．过载特点</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P><B><SPAN><BR></SPAN></B>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．过载保护的反时限特性</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal><SPAN>需要预置的内容：电流取用比</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>I</I><SUB>M</SUB>%</FONT></SPAN><SPAN>＝（</SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>MN</SPAN></SUB></FONT><SPAN>∕</SPAN><I><SPAN><FONT face="Times New Roman">I</FONT></SPAN></I><SUB><SPAN>N</SPAN></SUB><SPAN>）×</SPAN><FONT face="Times New Roman"><I><SPAN>100</SPAN></I><SPAN>%<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal><SPAN>例：</SPAN><FONT face="Times New Roman"><I><SPAN>75</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>变频器，</SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>N</SPAN></SUB></FONT><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>150</SPAN></I><SPAN>A</SPAN></FONT><SPAN>，则：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>配用</SPAN><FONT face="Times New Roman"><I><SPAN>75</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>电动机：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>2p</I></FONT></SPAN><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">4</FONT></SPAN></I><SPAN>：</SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>MN</SPAN></SUB></FONT><SPAN>＝</SPAN><SPAN>， </SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>M</SPAN></SUB><SPAN>%</SPAN></FONT><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>93</SPAN></I><SPAN>%</SPAN></FONT><SPAN>；</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><FONT face="Times New Roman"><SPAN> </SPAN><I>2p</I></FONT></SPAN><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">6</FONT></SPAN></I><SPAN>：</SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>MN</SPAN></SUB></FONT><SPAN>＝</SPAN><SPAN>， </SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>M</SPAN></SUB><SPAN>%</SPAN></FONT><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>95</SPAN></I><SPAN>%</SPAN></FONT><SPAN>。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>配用</SPAN><FONT face="Times New Roman"><I><SPAN>55</SPAN></I><SPAN>kW</SPAN></FONT><SPAN>电动机：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><I><SPAN><FONT face="Times New Roman">2p</FONT></SPAN></I><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">4</FONT></SPAN></I><SPAN>：</SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>MN</SPAN></SUB></FONT><SPAN>＝</SPAN><SPAN>， </SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>M</SPAN></SUB><SPAN>%</SPAN></FONT><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>68</SPAN></I><SPAN>%</SPAN></FONT><SPAN>；</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><I><SPAN><FONT face="Times New Roman">2p</FONT></SPAN></I><SPAN>＝</SPAN><I><SPAN><FONT face="Times New Roman">6</FONT></SPAN></I><SPAN>：</SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>MN</SPAN></SUB></FONT><SPAN>＝</SPAN><SPAN>， </SPAN><FONT face="Times New Roman"><I><SPAN>I</SPAN></I><SUB><SPAN>M</SPAN></SUB><SPAN>%</SPAN></FONT><SPAN>＝</SPAN><FONT face="Times New Roman"><I><SPAN>70</SPAN></I><SPAN>%</SPAN></FONT><SPAN>。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face="Times New Roman"><SPAN><SPAN> </SPAN></SPAN><SPAN><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>功能别称：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>过载报警水平、电机过载保护系数、电子热保护等级、电子热保护门限、过载限制设定。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman" size=3> </FONT></SPAN><SPAN></SPAN><B><BR></B></SPAN><B><SPAN><FONT face="Times New Roman">7</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN> 过电流保护的对象与原因分析</SPAN></B><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman"><SPAN> </SPAN>1</FONT></SPAN></B><B><SPAN>．过电流的保护对象与特点</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．过电流的原因分析</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">1</FONT></SPAN><SPAN>）运行过电流</SPAN></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman" size=3> </FONT></SPAN></SPAN></P>
<P class=MsoNormal><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">2</FONT></SPAN><SPAN>）短路过电流</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></P>
<P class=MsoNormal><SPAN>（</SPAN><SPAN><FONT face="Times New Roman">3</FONT></SPAN><SPAN>）预置不当引起的过电流</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN>功能别称：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN>过电流警告、过流限制、瞬时过电流限制。</SPAN><B><SPAN><BR></SPAN></B><B><SPAN><FONT face="Times New Roman">7</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">3</FONT></SPAN></B><B><SPAN> 电压保护功能</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">1</FONT></SPAN></B><B><SPAN>．过电压原因</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>相关功能：直流过电压控制器、过电压跳闸延时。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">2</FONT></SPAN></B><B><SPAN>．欠电压原因</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN><SPAN><FONT face="Times New Roman" size=3> </FONT></SPAN></SPAN></B><SPAN>相关功能：欠电压控制器、直流欠电压控制、主电源欠电压。</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></B></P>
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<P class=MsoNormal><B><SPAN><FONT face="Times New Roman">7</FONT></SPAN></B><B><SPAN>．</SPAN></B><B><SPAN><FONT face="Times New Roman">4</FONT></SPAN></B><B><SPAN> 自动重合闸功能</SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
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<P class=MsoNormal align=center><SPAN>图</SPAN><SPAN><FONT face="Times New Roman">3</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">55</FONT></SPAN><SPAN> 变频器的重合闸功能</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">a</FONT></SPAN><SPAN>）故障跳闸后的重合闸 </SPAN><SPAN><FONT face="Times New Roman">b</FONT></SPAN><SPAN>）瞬时停电后的重合闸</SPAN><SPAN><o:p></o:p></SPAN></P></DIV></TD></TR></TBODY></TABLE></SPAN><B><SPAN> </SPAN></B><B><SPAN><o:p></o:p></SPAN></B></P>
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<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></B></P>
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<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></B></P>
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<P class=MsoNormal><B><SPAN><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></B></P>
<P class=MsoNormal align=center><SPAN>康沃</SPAN><SPAN><FONT face="Times New Roman">G3</FONT></SPAN><SPAN>系列的保护功能</SPAN><SPAN><o:p></o:p></SPAN></P>
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<P class=MsoNormal align=center><SPAN>功能码</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
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<P class=MsoNormal align=center><SPAN>功能含义</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
<TD vAlign=top width=264>
<P class=MsoNormal align=center><SPAN>数据码及含义（或范围）</SPAN><SPAN><o:p></o:p></SPAN></P></TD></TR>
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<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">H</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">1<o:p></o:p></FONT></SPAN></P></TD>
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<P class=MsoNormal><SPAN>过载、过热保护动作方式</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
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<P class=MsoNormal><SPAN><FONT face="Times New Roman">0</FONT></SPAN><SPAN>：变频器封锁输出</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><FONT face="Times New Roman">1</FONT></SPAN><SPAN>：限流运行，并报警</SPAN><SPAN><o:p></o:p></SPAN></P></TD></TR>
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<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">H</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">2<o:p></o:p></FONT></SPAN></P></TD>
<TD vAlign=top width=216>
<P class=MsoNormal><SPAN>电动机过载保护系数</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
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<P class=MsoNormal><SPAN><FONT face="Times New Roman">5</FONT></SPAN><SPAN>0</SPAN><SPAN>～</SPAN><SPAN><FONT face="Times New Roman">110%<o:p></o:p></FONT></SPAN></P></TD></TR>
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<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">H</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">4<o:p></o:p></FONT></SPAN></P></TD>
<TD vAlign=top width=216>
<P class=MsoNormal><SPAN>停电再起动设置</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
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<P class=MsoNormal><SPAN><FONT face="Times New Roman">0</FONT></SPAN><SPAN>：不动作</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><FONT face="Times New Roman">1</FONT></SPAN><SPAN>：动作</SPAN><SPAN><o:p></o:p></SPAN></P></TD></TR>
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<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">H</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">5<o:p></o:p></FONT></SPAN></P></TD>
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<P class=MsoNormal><SPAN>停电再起动等待时间</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
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<P class=MsoNormal><SPAN><FONT face="Times New Roman">0</FONT></SPAN><SPAN>.</SPAN><SPAN><FONT face="Times New Roman">0</FONT></SPAN><SPAN>～</SPAN><SPAN><FONT face="Times New Roman">10</FONT></SPAN><SPAN>.</SPAN><SPAN><FONT face="Times New Roman">0s<o:p></o:p></FONT></SPAN></P></TD></TR>
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<TD vAlign=top width=91>
<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">H</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">6<o:p></o:p></FONT></SPAN></P></TD>
<TD vAlign=top width=216>
<P class=MsoNormal><SPAN>故障自恢复次数</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
<TD vAlign=top width=264>
<P class=MsoNormal><SPAN><FONT face="Times New Roman">0</FONT></SPAN><SPAN>、</SPAN><SPAN><FONT face="Times New Roman">1</FONT></SPAN><SPAN>、</SPAN><SPAN><FONT face="Times New Roman">2<o:p></o:p></FONT></SPAN></P></TD></TR>
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<TD vAlign=top width=91>
<P class=MsoNormal align=center><SPAN><FONT face="Times New Roman">H</FONT></SPAN><SPAN>－</SPAN><SPAN><FONT face="Times New Roman">7<o:p></o:p></FONT></SPAN></P></TD>
<TD vAlign=top width=216>
<P class=MsoNormal><SPAN>故障自恢复间隔时间</SPAN><SPAN><o:p></o:p></SPAN></P></TD>
<TD vAlign=top width=264>
<P class=MsoNormal><SPAN><FONT face="Times New Roman">2</FONT></SPAN><SPAN>～</SPAN><SPAN><FONT face="Times New Roman">20s<o:p></o:p></FONT></SPAN></P></TD></TR></TBODY></TABLE>
<P class=MsoNormal><B><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN></B><SPAN>功能别称：</SPAN><SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN><SPAN><FONT face="Times New Roman"> </FONT></SPAN></SPAN><SPAN>故障自恢复次数、故障自恢复间隔时间、自动重起的次数、自动重起的延迟时间、再试次数、再试等待时间；</SPAN><SPAN><o:p></o:p></SPAN></P><SPAN><SPAN> </SPAN></SPAN><SPAN>停电再起动设置、停电再起动等待时间、瞬时停电再运转功能、允许停电之最长时间、速度追踪之时间设定、</SPAN> 谢谢楼主分享！ 学习了，好资料。 学习一下，谢谢楼主汇总资料。 学习一下，楼主辛苦。 感谢楼主的无私分享 虎躯一震，拿分走人 这些的确是常用功能。 好资料！感谢楼主分享！ 谢谢楼主分享！
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