Faults In The Cluster Controller Or The Connected Devices - SMA CLUSTER CONTROLLER Installation Manual

7 Troubleshooting

7.2 Faults in the Cluster Controller or the Connected Devices

Problem
The Cluster Controller does not
start. The LEDs and the display are
off.
The login page does not open and
the status LED ( ) flashes red.
70 ClusterController-IA-en-10
Cause and corrective measures
The Cluster Controller is not connected to the voltage supply.
Corrective measures:
• Ensure that the three-pole plug for the voltage supply is
connected to terminal X1 of the Cluster Controller.
The voltage supply is reverse-connected or the top-hat rail
power supply unit is defective.
Corrective measures:
• Ensure that the voltage supply is correctly connected
(see Section 6.13).
• If the voltage supply is correctly connected, replace the
top-hat rail power supply unit.
The Cluster Controller could not start correctly. A system fault
has occurred.
Corrective measures:
• Disconnect the Cluster Controller from the voltage
supply and reconnect to the voltage supply. Note that
this can lead to loss of plant data.
• If the problem persists, contact the SMA Service Line
(see Section 11).
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