SMA CLUSTER CONTROLLER - Manual (Page 101)

Problem Cause and corrective measure
An incorrect total number of con-
nected inverters is shown on the user
interface or the display. Communication with at least one inverter is disturbed.
Either the Cluster Controller has not yet registered with
one or more inverters or the connection to one or more in-
verters has been interrupted.
Corrective measures:
• Wait six minutes and check again whether the
correct number of all connected inverters is
displayed.
If the incorrect number of connected inverters is still
displayed:
– Ensure that the inverters are in operation (see
inverter installation manual).
– Ensure that the network cables that connect the
inverters with one another are correctly
connected (depending on the inverter
equipment, see the inverter installation manual
or the installation manual of the Speedwire/
Webconnect interface).
– Ensure that the network cable of the inverter
connected directly to the Cluster Controller is
connected to network port X9 or X10 of the
Cluster Controller.
– Ensure that no network components, network
cables or connectors are defective.
The expected binary values for the
digital signal source are not shown on
the display. The digital signal source is not correctly connected.
Corrective measures:
• Ensure that the digital signal source is correctly
connected (see the Cluster Controller installation
manual).
No current signal for the analog sig-
nal source or the sensor is shown on
the display. The analog signal source or the sensor is probably not
correctly connected.
Corrective measures:
• Ensure that the analog signal source is correctly
connected (see the Cluster Controller installation
manual).
• Ensure that the sensor is correctly connected (see the
Cluster Controller installation manual).
18 Troubleshooting SMA Solar Technology AG / SMA America, LLC
User Manual 101 ClusterController-BA-en-14