Phoenix Contact 1708 M12 POE, User Manual, Page: 12 / 34

FL SWITCH 1708 M12 POE
12
PHOENIX CONTACT 105648_en_01
2.3 Installing the device
2.3.1 Connecting the supply voltage
Power is supplied via a 4-pos., T-coded M12 power connector, which is designed for a cur-
rent load of up to 12 A per pin. The supply voltage range is 18.7 - 30.5 V DC (24 V DC nom-
inal value); the supply voltage can be connected redundantly. (See Figure 2-4)
Operation with one power
supply
Figure 2-3 Operating the device with one power supply (example)
Redundant operation with
two power supplies
Figure 2-4 Redundant operation with two power supplies (example)
Make sure that the power supply unit used meets the following basic requirements:
We recommend protecting the device with a 12 AT backup fuse (slow-blow). For appro-
priate fuse holders or thermomagnetic device circuit breakers, please refer to “Ordering
data” on page 28.
1 2
4 3
24 V DC
12 AT
1 2
4 3
24 V DC
12 AT
24 V DC
12 AT