Phoenix Contact FL SWITCH 2000 Series - Connecting a Relay to the Digital Alarm Output

FL SWITCH 2000 / FL NAT 2000
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PHOENIX CONTACT 108997_en_04
3.2.4.3 Connecting a relay to the digital alarm output
The digital alarm output is an open drain output. In normal mode, the output is connected to
ground potential. If an error/alarm is present, the output is floating.
Figure 38 Connecting a relay to the digital alarm output
Please note that the relay must be suitable for the operating voltage.
Use the RIF-0-RPT-24DC/21 (Order No. 2903370), for example.
US
GND
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