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12
English
13
English
defa.com
9. Communication wiring
NETWORK TOPOLOGY
A daisy chain topology is easily implemented by using the connector inside each wallbox to
link the upstream and downstream charge points to the network. Select a colour code for
each terminal (A, B and M) and use the same colours throughout the network to minimize
the risk of incorrect wiring. All wallboxes have 12 terminals for connecting the bus, 6 for the
bus in and 6 for the bus out. The connector pinout is shown in the next chapter.
There are advantages by using a daisy chain topology (figure to the right) instead of a star
network (figure to the left):
• The bus is considerably shorter
• Fewer components
• Easier troubleshooting
• No extra hardware
• Fewer connection points
Addr.
6
Addr.
4
Addr.
5
Addr.
3
Addr.
2
Addr.
1
L1 L2 L3 N L1 L2 L3 N
L1 L2 L3 N
L1-L2-L3-N
L2-L3-L1-N
L3-L1-L2-N
L3-L1-L2-N
L2-L3-L1-N
L1-L2-L3-N
1
2
3
1
2
3
TN NETWORK, PHASE ROTATION, THREE PHASE
CHARGING
1. All charge points must be connected the
same way:
Brown = L1, Black = L2, Grey = L3, Blue = N
2. Create a fixed phase rotation at the
output of the fuses, or terminal blocks,
one rotation-step per connected charge
point.
3. All phases may be distributed with a
regular "L1-L2-L3-N" bus bar suitable for
4-pole DIN block devices.
NB! All wallboxes must be connected to the same grounding point; otherwise the
communication may be lost, or CLU may be damaged.
!
When installing the wallbox, assess and select a connection pattern and phase
distribution. Then connect the power cables to the wallbox according to the chosen phase
connection pattern.
