Along with built-in barriers that help conserve panel space, 750-439 NAMUR Ex i Module features 8 digital input channels with short circuit and wire-break diagnosis in each channel. Module receives binary signals from sensors operating in hazardous environments of ATEX Zones 0/20 or 1/21 and connecting to intrinsically safe NAMUR sensors, optocouplers, mechanical contacts, and other actuating elements. Each connected sensor is supplied with short-circuit protected operating voltage of 8.2 V.
This story is related to the following:I/O Modules