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Moore TG200 Trunkguard Device Coupler

Moore TG200 TRUNKGUARD Device Couplers provide electronic and fully auto-resetting spur short-circuit protection.  This prevents segment failure caused by single device faults. Utilising a “FoldBack” technique, any spur that attempts to draw more than 48mA is automatically switched off and not permitted any current flow until the fault is removed. A trickle current is used to
determine when the short has been removed. During a short, only 4-5mA is used. This is a significant advantage to “current-limiting” designs on competing units which hold a fault permanently on the segment at a higher than normal current level. This often results in segment failure by overloading the segment power supply. With removal of the short, TRUNKGUARD automatically reconnects the spur to the fieldbus segment.


Moore TG200 Trunkguard Features

  • Reduce commissioning delays. Patented* “Automatic Segment Termination” eliminates the most common installation error: segment failure from under or over termination, and assures local parts of a segment will continue to function if remote parts are accidently disconnected. (With the -MT option, the TG200 is supplied without auto terminator when external termination is preferred.)
  • Speeds diagnostics and device configuration. Diagnostic LEDs positively indicate status of spur power, any spur short circuits, and status of auto termination. The front panel features convenient connections for a fieldbus hand-held communicator.
  • Easy hazardous area installation. IECEx/ATEX/FM approvals allow installation in Zone 2 and Division 2 areas.


Moore TG200 Trunkguard Specifications

  • FOUNDATION Fieldbus™ H1 and PROFIBUS PA comms
  • ATEX Certification For use in Zone 2 with [ic] spurs
  • DIN Rail mount or with IP66 enclosure (stainless steel, GRP or aluminium) mount options
  • Upto 20 fieldbus spurs (4 minimum)
  • Power Supply: 10 to 32Vdc


Fluidic are a recognised partner of Moore Industries for Scotland. Our instrumentation engineers are product trained and are able to help with instrument selection within the full Moore Industries supply scope. Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).


  • Download Moore TG200 Trunkguard Datasheet
  • Download Moore TG200 Trunkguard manual
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