SMA CLUSTER CONTROLLER Installation User Manual
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6.8
Connecting the Cluster Controller to a Speedwire
Network
Interference in data transmission due to unshielded power cables
If unshielded power cables are used, they generate an electromagnetic field during operation
which may induce interference in network cables during data transmission.
• When laying network cables, observe the following minimum clearances to unshielded
energy cables:
– For installation without separating strip: at least 200 mm (8 in)
– For installation with aluminum separating strip: at least 100 mm (4 in)
– For installation with steel separating strip: at least 50 mm (2 in)
Do not connect the Speedwire network and the LAN
The Speedwire network is a separate network managed by the Cluster Controller. If the
Speedwire network and the LAN are connected, a disturbance of both networks is likely.
• In order to ensure proper communication, do not connect the Speedwire network and the
LAN (the Speedwire bus and the Ethernet bus of the LAN must not be connected to the
same network switch, for example).
Observe the configuration of the router and the network switch
For the Speedwire connection, the product uses IP addresses from the Unicast range and also
IP addresses from the Multicast range 239/8 (239.0.0.0 to 239.255.255.255).
• When using a router or network switch, ensure that the router and the network switch
forward the Multicast telegrams required for the Speedwire connection to all nodes in the
Speedwire network (for further information on how to configure the router or network
switch, see the manual from the manufacturer).
IGMP protocol version 1 must be supported
The product works with multicasts. For correct function of the product, all network components
used must support the IGMP protocol, version 1 (IGMPv1).
Requirements:
☐ The nodes in the Speedwire network (e. g. inverters) must be cabled in accordance with one
of the possible network topologies (see the node installation manual and the Technical
Information "SMA SPEEDWIRE FIELDBUS").
☐ If your system uses an Energy Meter to measure the active power feed-in at the grid-
connection point, then the Energy Meter must be connected either to the router or network
switch of the Speedwire network or directly to terminal X9 or X10 of the Cluster Controller,
depending on the network topology of the system.
Additionally required material (not included in the scope of delivery):
☐ Depending on the network topology: network cable (see Section 6.3 "Cable Requirements",
6 Connection and Commissioning
SMA Solar Technology AG / SMA America, LLC
Installation Manual
ClusterController-IA-en-14
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