TRUNKGUARD Series 200 Fieldbus Device Couplers (TG200)

deliver a fast and easy way to connect multiple fieldbus devices to a main fieldbus trunk in FOUNDATION fieldbus™ (H1) and PROFIBUS PA networks.

General Purpose and Hazardous Area Installations

For installation in General Purpose and Non-Incendive (Class 1, Division 2) areas, TRUNKGUARD Fieldbus Device Couplers can be matched with our FPS200 Fieldbus Power Supplies. For intrinsically-safe applications, see the RM100 Intrinsically-Safe Fieldbus System. For installation in Zone 1 areas, see the TG300 Series Fieldbus Device Coupler.

Industry-First Advantages

Available in 4-, 8-, 10-, 12- and 20-spur models, TRUNKGUARD is the first fieldbus Device Coupler to provide end of line sensing auto segment termination. The patented technology prevents fieldbus segment failure from under- or over-termination, a major problem in fieldbus startups. The TRUNKGUARD's auto-termination feature assures that local parts of a fieldbus segment will continue with proper termination even if remote parts of that segment are accidentally disconnected. This prevents costly downtime and hazardous situations. Other unique features include diagnostic LEDs that positively indicate power status on each fieldbus spur, spur short circuits, status of auto-termination, as well as convenient connections for a fieldbus hand-held configurator.

Short Circuit Protection

On detection of excess current on a fieldbus spur, the TG200 reacts immediately (20 microseconds) to switch spur current to a nominal trickle-level, rather than limiting the fault current to a fixed (and always higher) level as is typically done by competing units. With removal of the short, the spur is automatically reconnected to the fieldbus segment.

DIN-Rail and Complete Field-Mount Packages

TRUNKGUARD Fieldbus Device Couplers snap onto standard DIN-rail. To reduce specification and installation time, they can also be ordered in a variety of our ready-to-install field-mount, weather-proof enclosures complete with cable glands. Options include GRP (Glass Reinforced Polyester) and stainless steel enclosures with glands for armored or unarmored cable.