Connecting up
4.4 Connectors for the power supply of the SCALANCE W786
SCALANCE W786-2HPW
Operating Instructions (Compact), 06/2007, A5E01186485
33
Figure 4-3
View from above with an FO cable inserted in the strain relief clamp
4.4
Connectors for the power supply of the SCALANCE W786
Possible power supplies
The following power supplies are suitable for the SCALANCE W786:
● 48 V DC direct voltage
Use the two-pin connector supplied with the SCALANCE W786.
● 12 - 24 V DC direct voltage
Use the power supply adapter 12 - 24 V DC available as an accessory.
● 110 - 230 V DC direct voltage
Use the power supply adapter 110 - 230 V DC available as an accessory.
● Power over Ethernet (PoE)
If an eight-wire Ethernet cable is used, it is possible to supply power over the four wires
that are not used as the data lines. As an alternative the voltage can be modulated onto
the data lines ("phantom power").
If Fast-Connect Ethernet connectors are used to allow assembly in the field or due their
greater mechanical strength, only four-wire cables can be used. In this case, only
phantom power is possible. This does not represent a restriction for the user since PoE-
compatible power supply equipment must always provide both options.
