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Optical Bypass Relay OBR40

With the new optical bypass relay OBR40, Ethernet fiber-optic networks remain operational even if one or more of the switches suffers a power outage. This protection against multiple faults makes it possible to further increase the availability of Ethernet networks. An Internal Switchover Mechanism Ensures that Data Communications Between Neighboring Switches are Unaffected. This Mechanism Functions Independently of the Data Rate or Protocol.

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  • The network remains operational even when one or more of the switches suffers a power outage
  • The bypass function is guaranteed even when the relay itself is without power
  • The ability to schedule the bridging of system components opens up new possiblities for maintenance and servicing

Technical Information

Your Benefits

If network availability is your top priority, the OBR40 optical bypass relay is the perfect solution. Even if the power fails simultaneously on a number of switches, only the directly affected applications will go down, the remainder
of your network – and the major part of your processes – will still be available. You can rely on this even when the OBR40 itself is receiving no power, because the bypass function is effectively activated automatically.

Optical Bypass Relay OBR40 from Hirschmann™

The OBR40 optical bypass relay enables you to protect Ethernet fiber-optic networks against power outages at one or more switches. It comes with two duplex inputs and outputs that are available for three different types of fiber (multimode 62.5/125 μm, multimode 50/125 μm and single mode 9/125 μm). It is also possible to use a control contact to trigger the function at will. A stepwise configurable delay, for intervals up to 75 s, provides for the mooth restarting of switches. This ensures that the switch’s boot process can be completed so that incoming data packets can be dealt with immediately. The OBR40 is also remarkable for offering protection rating IP30, an operating temperature range from -40°C to +70°C, and a redundant 24 V DC power supply. LEDS on the front panel indicate the device and network status.

The advantages of this optical bypass relay are especially valuable for applications in which parts of the system can operate autonomously. In the event of a local malfunction, data connections to the unaffected parts are maintained so that they can remain fully productive. But high-availability data communication is just one aspect – this relay can do far more than that. In wind parks for example: when the wind gets too strong or when maintenance work is needed, one or more turbines can easily be taken out of the network without affecting the connections of the remainder.


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Product Description

The OBR40 robust optical bypass relay, which can be rail-mounted, makes linear or ring topology fiber-optic Ethernet networks even more reliable. All you have to do is connect it to the uplink ports of a switch. If the supply voltage fails, the bypass function is activated and the switch is bypassed, and it is also possible to use a control contact to trigger the function at will. A stepwise adjustable delay ensures that a previously bridged switch is smoothly returned to the network when the problem has been resolved: the boot process is completed and incoming data packets are dealt with immediately. If a number of switches are each provided with their own “bodyguard,”the Ethernet network can survive even multiple
failures caused by power outages.

Benefits at a Glance

This data-transparent optical bypass relay protects applications against multiple failures and is suitable for any data protocols and rates.

  • Ethernet fiber-optic networks remain functional in spite of power failures at one or more switches
  • Switchover threshold for the supply voltage monitor can be adjusted between 10 V and 60 V
  • The bypass function is activated even if the OBR40 itself has no power
  • A control contact can be used to trigger the bypass function at will
  • Stepwise adjustable delay guarantees smooth reactivation of switches
  • Flexible in use, thanks to connections for different types of fiber (multimode 62.5/125 μm, multimode 50/125 μm, single-mode 9/125 μm)
  • Protection rating IP30
  • Potential-free signal contact
  • Extended operating temperature range from -40°C to +70°C
  • Redundant 24 V DC power supply
  • LED displays for network status and power supply
  • Rail-mounted
  • Ideally suitable for all Industrial Ethernet switches from Hirschmann™

Product Overview

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OBR40


Optical Bypass Relay OBR40

Optical relay for bridging Ethernet switches in the event of power outages.





New Product Bulletin

With the new optical bypass relay OBR40, Ethernet fiber-optic networks remain operational even if one or more of the switches suffers a power outage. This protection against multiple faults makes it possible to further increase the availability of Ethernet networks.

Press release

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Belden presents new OBR40 optical bypass relay from Hirschmann

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