[PDF] WE 77Ex-1

we 77WE 77Ex-2 The transformer isolated barrier transfers dital snals into hazardous areas. Sensors per EN 60947-5-6 (NAMUR) or mechanical contacts may be used as transmitters.WE 77Ex-2 The transformer isolated barrier transfers dital snals into hazardous areas. Sensors per EN 60947-5-6 (NAMUR) or mechanical contacts may be used as transmitters.