SMA SUNNY BOY US, Руководство пользователя

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Measurement channels and messages SMA America, LLC
28 SB_CL_US-BUS094410 User Manual
Derating Overtemperature in the inverter.
The inverter reduces its output to prevent the device from overheating.
Corrective measures
• In the case of fan devices check heat dissipation, as described in section
5.1 "Checking heat dissipation" (page 25).
• To avoid unnecessary yield losses, your installer must check the configuration
and string size.
• The installer should also check whether the inverter could be installed in a
better position with better ventilation and adequate heat dissipation.
Disturbance Disturbance. This error is generated for safety reasons and prevents the Sunny Boy
from connecting to the grid.
Corrective measures
• Contact your installer or SMA.
Error An error has been detected.
Corrective measures
• Contact your installer or SMA.
Grid
Monitoring Testing the grid status, relay test etc.
This message occurs during the startup phase before the Sunny Boy has connected
to the grid. The message usually appears in the morning and evening when there is
little solar irradiation. Grid monitoring is also carried out after a fault has occurred.
MPP The Sunny Boy is operating in MPP mode. It extracts the highest possible power
output from the PV generator. MPP is the standard display message when operating
under normal irradiation conditions.
MPP-Search The inverter is calculating the MPP (Maximum Power Point)
Offset Offset calibration of the electronics (at start-up).
Riso Measurement of the insulation resistance of the PV system.
Stop Interruption of operation after a disturbance. This status can also be set manually.
V-Const Constant-voltage operation ("Const. Volt.")
The input voltage of the PV array is set at a given nominal value and the inverter is
not operating in MPP mode. In some cases this mode can be set as the operating
mode.
Waiting PV voltage is not high enough to start.
Warning System warning advising further investigation.
Message Description and corrective measure