The Hirschmann OBR40 optical bypass relay relays increases the availability of fiber-optic Ethernet networks by ensuring that they remain operational despite power failures at one or more switches.
The relays are designed for both ring and bus topologies. When a switch fails, an internal switchover mechanism in the relay enables data communication to continue seamlessly between neighboring switches. The bypass relay connects to a switch's fiber-optic uplink ports via two duplex inputs/outputs. The mechanism is designed to operate even when the bypass relay loses power. The bypass relay also supports at-will activation of the bypass function for maintenance or selective shutdown of parts of the network. For example, when the wind gets too strong in a wind park, or when maintenance work is needed, one or more turbines can be easily taken out of the network without affecting the connections of the remainder.
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