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Description

当输入回路串有二极管或电阻(不能完全启动)，或者有并联电阻或有漏电流时(不能完全切断)，就会有误动作，灵敏度下降，对此应采取措施。另一方面，当输入器件的输入电流大于PLC的最大输入电流时，也会引起误动作，应采用弱电流的输入器件，


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