SMA Solar Technology AG 7 Troubleshooting
Installation Manual ClusterController-IA-en-10 69
7.1.2 LEDs of the Network Connections
LED Status Cause and corrective measures
Link/Activity (green) Off No network connection has been established.
The Cluster Controller is not connected to the voltage
supply.
Corrective measures:
• Connect the Cluster Controller to the voltage
supply (see Section 6.13).
No network connection has been established.
The patch cable at the Cluster Controller, at the
router or at the network switch is not correctly
connected.
Corrective measures:
•Ensure that the patch cable is correctly
connected (see Section 6.7).
No network connection has been established.
One or more network components, patch cables or
plug connectors are defective or damaged.
Corrective measures:
• Replace the defective or damaged network
components, patch cables or plug connectors.
Flashing Network connection established.
Data is being transmitted or received.
Speed (yellow) Off Network connection established.
The data transfer speed is 10 Mbit/s.
On Network connection established.
The data transfer speed is 100 Mbit/s.