Output control and protection device, in particular for programmable automatic controllers
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United States of America Patent
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-
Jul 11, 1995
Grant Date -
N/A
app pub date -
Sep 3, 1992
filing date -
Sep 5, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device for controlling and protecting outputs against overcurrents, in particular for programmable automatic controllers, comprises for each output channel a protection circuit connected by a single terminal to a power switch and to its control circuit. In the protection circuit a comparator compares with a threshold a voltage imaging the current in the output channel and disabling means are connected to a circuit for forcing the comparator input voltage. A common terminal is therefore used to monitor and to disable the output channel.
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