Sma SUNNY BOY User Manual download pdf (Page 31)

SMA Solar Technology AG Measurement Channels and Messages

User Manual SB_SMC-BEN092840 31

grid. mon Testing the grid status, relay test etc.

This message occurs during the startup phase before the Sunny Boy or Sunny Mini

Central 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 / Sunny Mini Central 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 Peak The inverter is operating in MPP mode above its rated capacity.

MPP-Search The inverter is calculating the MPP (Maximum Power Point)

Off Grid The inverter is in "Island" mode. This mode has been specially conceived for

operation in a stand-alone grid with a Sunny Island as grid controller.

Offset Offset adjustment of measurement electronics

Stop Interruption of operation after a disturbance. This status can also be set manually.

Turbine

Mode

The inverter is in "Turbine" mode. This mode is specifically conceived for use with

wind turbine systems.

V-Const Constant-voltage operation ("Const. Volt.")

The input voltage of the PV generators 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 The switch-on conditions are not (yet) fulfilled.

Message Description and corrective measure

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Sma SUNNY BOY User Manual Page 31