SMA CLUSTER CONTROLLER Installation Manual page 74

7 Troubleshooting
Problem
No measured values for the
connected irradiation sensor are
shown on the display.
Despite not being switched on, a
measured value of up to 2.2 V for
Analogue voltage input 4 (AI4)
is still shown on the display and the
user interface.
74 ClusterController-IA-en-10
Cause and corrective measures
If no measured values are displayed for the irradiation sensor,
either the characteristic curve of the irradiation sensor is not
configured or the irradiation sensor is not correctly 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 6.10.1).
If no sensor is connected to the terminal block
Analogue voltage input 4 (AI4), a measured value of up
to 2.2 V will nevertheless be shown in the display and on the
user interface of the Cluster Controller.
Corrective measures:
• In order for a measured value of 0 V to be displayed for
the terminal block Analogue voltage input 4 (AI4)
when it is not connected, place a jumper wire at
terminal X8 between pin B5 and pin B7.
SMA Solar Technology AG
Installation Manual