Chapter 5. Diagnostics
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PACSystems PROFINET Managed Industrial Ethernet Switches User Manual
GFK-3030
5.2
External Alarm Circuit
The two ALM contacts in the 6-pin terminal strip located in the bottom panel may be used to drive an external
alarm circuit, as diagrammed in Figure 38. The Alarm Relay is Normally Open, and closes in the event of an
alarm condition
. Within the GLM switch, all alarm conditions that have been enabled are OR’d together. Once
any of them becomes active, the Alarm Relay closes.
Figure 38: External Alarm Circuit