Problem
Cause and corrective measure
No measured values for the con-
nected irradiation sensor are shown
on the display.
If no measured values are displayed for the irradiation
sensor, either the characteristic curve of the irradiation sen-
sor is not configured or the irradiation sensor is not cor-
rectly connected.
Corrective measures:
• Ensure that the characteristic curve of the irradiation
sensor is configured (see the Cluster Controller user
manual).
• Ensure that the irradiation sensor is correctly
connected (see Section 6.11.3, page 44).
Though it is not connected, a mea-
sured value of up to 2.2 V for pin
group
Analog voltage input 4
is
shown on the display and the user in-
terface.
If no sensor is connected to the pin group
Analog volt-
age input 4
, a measured value for this pin group of up to
2.2 V will nevertheless be shown on the display and the
user interface of the Cluster Controller.
Corrective measures:
• In order for a measured value of 0 V to be displayed
for the pin group
Analog voltage input 4
when it is
not connected, place a jumper wire between pins
B
5
and
B
7 in terminal
X8
.
Login
Problem
Cause and corrective measure
The login page does not open and the
status LED (
) is flashing red.
The Cluster Controller could not start correctly. A system
error has occurred.
Corrective measures:
• Disconnect the Cluster Controller from the voltage
supply and reconnect it to the voltage supply. Note
that this can lead to loss of system data.
• If the problem persists, contact the Service (see
7 Troubleshooting
SMA Solar Technology AG
Installation Manual
ClusterController-IA-en-15
72
