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dannyz
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樓主  發(fā)表于: 2015-09-14 11:34
現場(chǎng)用一臺v20變頻器做PID恒壓供水，根據壓力變送器反饋信號做對比。AI1設定值,AI2反饋值�，F在關(guān)掉出水口閥門(mén)，變送器反饋電流信號不會(huì )增大，電機頻率不會(huì )減小。我查看變頻器 r0752信號也沒(méi)增大，停掉電機，打開(kāi)出水口閥門(mén)，r0752信號變?yōu)?mA，說(shuō)明變送器也沒(méi)有壞掉。請問(wèn)大家，我這個(gè)問(wèn)題出在哪塊了？

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