SMA SB 2800i - Manual (Page 37)

Operating Instructions Technical Documentation
SB2800i-11:FE0504 SMA Regelsysteme GmbH 35
6.4.2 Status Messages
The Sunny Boy 2800i generates a number of status messages according to the mode it currently
operates in. The status messages that you see can differ depending on the type of communication
you are currently using (Sunny Display, Sunny Data, Sunny Boy Control, Sunny Data Control)
MPP
The Sunny Boy 2800i is operating in MPP mode. The input voltage setpoint
is constantly adjusted in order to obtain the maximum energy from the
different strings. This is the default operating mode in normal operation with
normal radiation.
U-Konst Constant voltage operation. (The input voltage from the PV modules is fixed
to a defined setpoint. The Sunny Boy 2800i is not operating in MPP mode.)
This mode can be defined as operating mode in special applications.
Derating PV generator power is higher than the amount the Sunny Boy 2800i can
process
Netzueb. /
grid. mon. Test of grid status for subsequent connection (grid impedance), relay test etc.
This mode only occurs during startup, before the Sunny Boy connects to the
grid. This status can occur often during the morning and evening with varying
insolation.
Offset Offset adjustment of measurement electronics
Stoer./disturb. Failure (see following table „ Failure messages“)
Stop A safety relevant failure or similar occured preventing that the Sunny Boy
connects to the grid. This status can also be set manually.
Warten/waiting Conditions for connection have not (yet) been fulfilled.
Zuschalt Electronics are connecting to grid
MPP-Such PV voltage is determined and set
MPP-Peak AC current is higher than the nominal current of the Sunny Boy