Module with isolated analogue inputs having low leakage current
AssigneeSchneider Electric Industries SAS
InventorsSerge RUGO, Richard Tonet
Life of this patent
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Abstract
The present invention relates to a module with isolated analogue inputs for programmable controller, the said module comprising several input pathways that are each isolated with the aid of at least one optical isolation static relay (1a-4b) controlled selectively with the aid of control means (6), the said module being characterized in that it comprises a multiplexer (5) furnished with several channels (5a-5h) each controlled to open or to close, a channel of the multiplexer (5) being placed in series with an isolated input pathway (1-4) of the module.
Claims8
Module with isolated analogue inputs for programmable controller, the said module comprising several input pathways that are each isolated with the aid of at least one optical isolation static relay (1a-4b) controlled selectively with the aid of control means (6), the said module being characterized in that it comprises a multiplexer (5) furnished with several channels (5a-5h) each controlled to open or to close, a channel of the multiplexer (5) being placed in series with an isolated input pathway (1-4) of the module.
Dependencies are inferred from the claim text.