Supplying The Switch Using One Voltage Source; Supplying The Switch Using Two Voltage Sources - Phoenix Contact FL SWITCH 2000 Series Installation And Startup Manual

FL SWITCH 2000 / FL NAT 2000
Redundant 24 V DC supply
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3.4.4.2 Connecting the 24 V DC supply voltage
The device is operated using a 24 V DC voltage, which is applied via COMBICON connec-
tors. The voltage can be supplied redundantly.
The module is designed exclusively for operation with safety extra-low voltage
(SELV/PELV). In redundant operation, both power supplies must satisfy the requirements
of the safety extra-low voltage.
The 25xx/K1 versions do not feature a signal contact. Therefore, the 2-pos. COMBICON
connector with the marking XG1 is not required (see
If redundant power supply monitoring is active (default setting), an error is indicated if only
one voltage is applied.
A bridge between US1 and US2 prevents this error message. It is possible to deactivate
monitoring in web-based management or via SNMP.
XD1
US1 GND US2 GND
1 2 3 4
+
24 V DC
Figure 319

Supplying the switch using one voltage source

XD1
US1 GND US2 GND
1 2 3 4
+ +
24 V DC
Figure 320

Supplying the switch using two voltage sources

In order to reset the switch on power up, the power supply must be interrupted for at least
three seconds.
XG1
F1 F2
1 2
OUT
XG1
F1 F2
1 2
OUT
Figure 319 and Figure 320).
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