Each 800 series discrete I/O module features:
In addition, each module:
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Is designed for harsh, plant-floor environments
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Electrically isolates each point from logic
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Can be removed without disturbing rigid field wiring system
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Satisfies SWC requirements of IEEE and ANSI guides
Each I/O point is electrically isolated from the controller by an optical coupler. The I/O signals can withstand the severe voltage transients normally encountered in industrial environments without damage to the I/O module or controller. Moreover, the modules satisfy surge withstand capability (SWC) of both IEEE and ANSI guides.
All I/O points shut off in the event of a communication failure between a controller and the I/O module, and the module’s Active LED indicator shuts off. Shut-off occurs within 300 ms of the signal loss.
The I/O modules can be inserted into any I/O location in the 800 series I/O structure. The module slides easily into the module housing and does not interfere with any other module’s operation.
The module’s protective case shields the logic circuitry from any electrical interference and minimizes the possibility of any noise being coupled from the user side of the circuitry to adjacent modules. A ground is automatically established when the module is inserted into the housing. This low impedance earth ground originates from the housing’s backplane.
