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BIU 1200 Series

Exceeds NEMA TS2-2003 requirements for Bus Interface Units

The BIU-1200 Series Bus Interface Unit (BIU) interfaces 24 V logic signals to the SDLC serial bus in a TS 2 cabinet. The BIU interfaces between the Controller Unit and the Loop Detector Racks, Terminals and Facilities, and other devices in a NEMA TS-2 Cabinet Assembly. Its functions include controlling load switch outputs, detector resets, and the conditioning and conversion of Terminals and Facilities and Loop Detector call outputs for the Controller Unit. A 15-pin, female, metal shell, D-subminiature connector with latching blocks provides the connection to the SDLC cable. The front panel has separate LED indicator lights for Power, Transmit, and Receive.

BIU 1240 full width faceplate BIU 1220 half width faceplate