10. easyE4 communication Connection to other devices
10.16 easy communication modules
For basic information on how to install the EASY-COM-SWD-…, please refer to the
following subsections in the Installation section:
 → " Installation position", page 54
 → "Mounting", page 58
 and
 → "Connection terminals", page 66
Connecting the power supply through POW/AUX
The following supply voltages are required for a SmartWire-DT line:
l
POW supply voltage:
The 24 V
DC
POW voltage input will first power the EASY-COM-SWD-… module
itself.
The EASY-COM-SWD-… additionally contains a power supply that delivers 15 V
DC
voltage needed to power the SmartWire-DT modules in a control panel.
The maximum current load is 0.7 A. The voltage is not galvanically isolated from
POW.
The device supply voltage for the electronics in the SmartWire-DT modules down-
stream (15 V
DC
) is generated using the 24 V
DC
supply voltage applied at the POW
terminal.

If the current required by the connected SmartWire-DT modules
exceeds the maximum capacity of 0.7A, an EU5C-SWD-PF2-1
power feeder module needs to be included in the SmartWire-DT
line configuration.
The power feeder module contains a power supply that can be used
to feed a new 15 V
DC
voltage to power the SmartWire-DT modules
inside a control panel.
The generated 15 V
DC
voltage will be galvanically isolated from the
power feeder module's 24 V
DC
supply voltage.
l
AUX supply voltage:
The AUX 24 V
DC
voltage input is used exclusively to power the 24 V
DC
contactors.
The maximum current carrying capacity is 3 A (CE/IEC/EN) or 2 A (UL/CSA).
If there are any contactors or motor starters in the SmartWire-DT topology, a 24
V
DC
AUX voltage must additionally be supplied as a control voltage for the con-
tactor coils.

If the current required by the connected switchgear exceeds the
maximum capacity of 3A or 2A, an EU5C-SWD-PF1-1 or EU5C-
SWD-PF2-1 power feeder module needs to be included in the
SmartWire-DT line configuration.
For EASY-COM-SWD-…, use cable protection (F1) with a capacity of at least 3 A
(slow).
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