Omniterm FCX fibre-optic switch contact signal repeater unit

The Omniterm FCX is a fibre-optic switch contact signal repeater unit that transmits a switch contact status signal bidirectionally up to 20 km. With a safety integrity level (SIL) 2 rating, the FCX is designed to be built into safety-critical systems. The unit uses 1oo2 architecture and is suitable for the controlled, emergency shutdown of electrical substations and other safety-critical applications.

The transceiver is compatible with either 850 nm multi-mode or 1310 nm singlemode fibre-optic cabling; the latter can send switch contact signals up to 20 km of range. The FCX is powered from a 10–30 VDC power supply and the device can operate in a range of 0–60°C.

The FCX can also figure in mining and materials handling as well as nuclear radiological safety warning signals and monitoring functions. The SIL-2 rating indicates to system designers that the risk associated with transmitting switch contact signals over long distances can be limited to appropriate levels.