ICS Triplex T8314 Trusted Fibre TX/RX Unit

Configured for long-distance optic communications and remote expansion in Trusted safety systems, the ICS Triplex T8314 (T8314 Fibre TX/RX Unit) provides direct physical/electrical execution. The module converts electrical backplane bus signals into single-mode optical transmissions across distances up to 10 km, linking remote chassis backplanes without introducing electrical loop noise.

Hardware Specifications

Triple Modular Redundancy (TMR) Architecture

Designed to support SIL3 certification requirements in fault-tolerant safety architectures, the T8314 operates within a triple modular redundancy (TMR) 2oo3 architecture configuration across remote expansion links. Remote expander chassis setups deploy six T8314 units total, placing three modules on each interconnecting end to preserve triple physical redundancy across optic channels. Full galvanic isolation between field chassis locations prevents ground loop current flow and suppresses lightning surge damage across long-distance cable runs. Built-in diagnostic routines monitor optical signal levels and transceivers, executing fail-safe state execution automatically if an optical link degrades.

Frequently Asked Questions

Q: How does the dual 24 VDC power connection operate on the T8314 DIN-rail chassis? A: The module accepts two independent 24 VDC feed lines routed through internal diode-ORed steering circuits, ensuring continuous transceiver operation if one external power supply fails.

Q: How many T8314 Fibre TX/RX units are required to connect a remote expander chassis? A: A complete remote expansion setup requires six T8314 modules in total, utilizing three units at the local rack end and three units at the remote expander end to maintain full triple modular redundancy.

Q: Which cable harnesses interface the T8314 units to the expander chassis connectors? A: System wiring utilizes TC-302 cables to interface single expander interface adapters to three T8314 units, or TC-303 cables equipped with heavy-duty metal hood connectors for direct expander chassis termination.

Field Installation Guidelines

Mount the T8314 unit onto a grounded 35 mm DIN rail within the enclosure, ensuring adequate clearance above and below the housing for heat dissipation. Secure DIN-rail end clamps firmly on both sides of the module to prevent lateral slide movement under plant vibration.

Route single-mode fiber optic cables through protective conduit separate from copper power wiring. Keep fiber bend radii larger than the manufacturer minimum limit to avoid signal attenuation, and clean all SC connector end-faces with lint-free optical wipes prior to mating with TX/RX ports.