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5X00121G01
點(diǎn)擊次數(shù):4發(fā)布時(shí)間:2017/2/16 15:14:35

更新日期:2017/2/16 15:14:35
所 在 地:中國大陸
產(chǎn)品型號:5X00121G01
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5X00121G01
5X00121G01
7、 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。
8、變頻器的接地
400V級:C種接地(接地電阻10Ω以下)。
接地線切勿與焊機(jī)及動力設(shè)備共用。
接地線請按照電氣設(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。
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Allen-Bradley 廈門泰尼電氣有限公司
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