SMA Sunny Boy Control Light - Manual (Page 58)

Sunny Boy Control Light Chapter 5: Menu Functions for Configuration
SUNBCL-11:NE
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SMA Regelsysteme GmbH
[ TOLERANCES ]
‡Warnings
15min
Offline Š
30min
Energy
50%
Communication
50%
Fig. 5.34: Definition of the thresholds for the "Control"
"
Warnings Warnings Warnings Warnings
" defines how long the failure must be occurring before a warning is
generated by the Sunny Boy Control Light.
"
Offline Offline Offline Offline
" defines the maximum period of time a device may be off-line before a
warning is generated. (This is based on the entire operating time of the plant as
"online time" of the first device and the shutdown of the last device). The minimal
time is 15 minutes.
"
Energy Energy Energy Energy
" defines the deviation of a single device from the average yield of the entire
plant in percent. Be generous with this parameter (or let’s say more tolerant, as it is in
the tolerance menu) due to the fact that there are always slight deviations resulting
from different panels, panel geometry and temperature. See the below example for
details. And note that the "
energy energy energy energy
" controlling function naturally does not make
sense for plants with only one Sunny Boy Inverter since single inverters in a PV-plant
with only one inverter simply do not deviate from the average of the entire plant.
0% deactivates the "
Energy Energy Energy Energy
" controlling function.
The following example is a PV-plant with 4 inverters (A, B, C and D)
with a defined tolerance of 90%: