4． MDD093B-F-020-N2L-110GR0為了提高接線的簡易性和可靠性，推薦信號(hào)線上使用壓線棒端子。壓接端子選擇如下圖：
5． 如無使用壓線端子，接線時(shí)請(qǐng)注意：
PACing="0" cellb="0" b="100%"> 不作搪錫處理的電線
電線
剝線長度約7mm
端子排
刀頭寬度0.6mm以下
3.55mm以下
細(xì)一字螺絲刀
螺絲刀寬度
二． 關(guān)于接地
1． MDD093B-F-020-N2L-110GR0 變頻器的接地應(yīng)該與PLC控制回路單獨(dú)接地，在不能夠保證單獨(dú)接地的情況下，為了減少變頻器對(duì)控制器的干擾，控制回路接地可以浮空，但變頻器一定要保證可靠接地。在控制系統(tǒng)中建議將模擬量信號(hào)線的屏蔽線兩端都浮空，同時(shí)由于在機(jī)組上PLC與變頻器共用一個(gè)大地，因此建議在可能的情況下，將PLC單獨(dú)接地或者將PLC與機(jī)組地絕緣開來。
2． MDD093B-F-020-N2L-110GR0變頻器的接地
•400V級(jí)：C種接地（接地電阻10Ω以下）。
•接地線切勿與焊機(jī)及動(dòng)力設(shè)備共用。
•接地線請(qǐng)按照電氣設(shè)備技術(shù)基準(zhǔn)所規(guī)定的導(dǎo)線線徑規(guī)格。
如35KW的變頻器接地線線徑推薦為22 mm2，87KW的接地線線徑推薦為50 mm2。
•接地線在可能范圍內(nèi)盡量短。由于變頻器產(chǎn)生漏電流，與接地點(diǎn)距離太遠(yuǎn)則接地端子的電位不安定。
•使用兩臺(tái)以上變頻器的場合，請(qǐng)勿將接地線形成回路。如圖：
3．MDD093B-F-020-N2L-110GR0 變頻器與電機(jī)間的接線距離。
變頻器與電機(jī)間的接線距離較長的場合，來自電纜的高次諧波漏電流，會(huì)對(duì)變頻器和周邊設(shè)備產(chǎn)生不利影響。因此為減少變頻器的干擾，需要對(duì)變頻器的載波頻率進(jìn)行調(diào)整，請(qǐng)參考下表：
變頻器、電機(jī)間的接線距離 50m以下 100m以下 100m以上
載波頻率 15KHz以下 10KHz以下 5KHz以下
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