SMA Sunny Boy Control - Manual (Page 74)

Sunny Boy Control
SMA Technologie AG
User Manual SUNBC-14:NE0206 70
If you do not wish to monitor the energy yield of a device and want to avoid receiv-
ing error messages, set the “Energy” tolerance to 0 %.
Example of daily energy yield comparison
This system comprises 4 devices, and the energy tolerance is set to 90 %.
Device Yield Message Comment
A 2.2 kWh None Device operating normally
B 1.7 kWh Error Yield below tolerance Warning message
C 0 kWh Offline Device not operating Error message
D 2.1 kWh None Device operating normally
System 6.0 kWh
Average 2.0 kWh Average device yield
Tolerance
1.8 kWh
Minimum yield expected of a device to avoid er-
ror message
Average: 2.0
kWh
Tolerance: 90 %
=> Minimum energy yield: 1.8 kWh
Devices that have not yielded any energy by the end of the day are not
taken into account when the average is computed.
The percentage under “Communication” indicates the expected minimum ratio of
data packets that must have been transmitted successfully.
The value under “RIso Failure” indicates the required minimum insulation resis-
tance, short of which an error message is generated.