7 SmartWire-DT
6.4 Network transmission security
284 Control Relay easy800 11/11 MN04902001Z-EN www.eaton.com
Power feeder module
The number and the types of SWD stations determine the volume of data to
be transferred and the electrical load.
You can use power feed modules if your application has a higher power
consumption than the device provides, or if the cable length of the SWD line
causes an increased voltage drop. Calculation examples are provided in the
“SmartWire-DT - System” manual (MN05006002Z-EN).
Power feeder modules are power supply units that are connected
additionally to the SmartWire-DT network when there is an increased current
consumption or increased voltage drop. Being a passive SWD element, a
power feeder module does not have a station address.
The EU5C-SWD-PF1 power feed module feeds the 24 V DC supply voltage
for contactors on the SWD line.
The EU5C-SWD-PF2 power feed module feeds both the 24 V DC supply
voltage for contactors as well as the 15 V DC supply voltage for other SWD
stations on the SWD line.
Figure 207:Schematic layout of an SWD line with the EU5C-SWD-PF2 power feed module
a EASY806-DC-SWD
b EU5C-SWD-PF2
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