Fieldbus Coupler, Power Supply

Designed to prevent fieldbus segment failure from under- or over-termination, a problem in fieldbus startups, Trunkguard’s auto-termination feature assures that local parts of a segment will continue to function if remote parts of that segment are accidentally disconnected. The vendor also now offers the Route-Master I.S. power supplies for use in hazardous areas and hostile environments. Unlike complex FISCO-type power supplies that can only power around 115mA in hydrogen-risk areas, Route-Master enables 350mA per segment in hazardous locations. This allows up to 16 fieldbus devices per segment compared to the four typically allowable using barriers or five using FISCO.