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Davids

FX2N-48ER hardware failure?

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Hi, i have some problem with FX2N-48ER. This controller are installed at machine are more than a year, but today suddenly all it input point LED are no ON. I try to short it to any input point but result still the same, all input point are no ON. In GX Developer, i also can't see the input ON although i try to short it. is that the controller malfunction? or anything to it? Please give me a hand for this.

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Sounds like you have lost your 24V DC! The inputs require a 24Vdc input with reference to the terminal S/S (0V) Check that you have this voltage first.

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yes. i have 24VDC provided to controller at input. what problem will it be?

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Beyond that then you must presume that a high voltage has ruined the input side Be very sure that you have 24V dc between an input that should be on and the S/S terminal. - check that most maticuously I have seen a mitsi take 240v ac on a 24vdc input - smoke came out but it still workerd afterwards.

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