Wago Corporation: Ethernet switches with alarm

Wago’s 852 Series ethernet switches offer an alarm contact, enabled via dip switch, to signal an error condition on the switch.

Pw 5116 Webwago
This feature is standard on both managed and unmanaged switches (non-ECO versions). The power input connector on the switch has two dedicated alarm circuit connections that can be wired to any warning device, such as a PLC or pilot light. Error conditions that can be monitored include port link failure (cable disconnect, network disruption, etc.), power supply disruption/disconnect, or power supply voltage out of specified range (9…48V).

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