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Measurement channels and messages SMA America, LLC
26 SB_CL_US-BUS094410 User Manual
6 Measurement channels and messages
If your inverter is equipped with a communication component, then numerous measurement channels
and messages to aid diagnosis can be transmitted.
The following abbreviations apply:
BFR: Operation control unit
SRR: Current control unit
The BFR and SRR are redundant processor control systems for the utility protection functions.
6.1 Measuring channels
Measuring
channel Description
Balancer Displays the currently active operating mode of the Sunny Boy, which has been
set via the operating parameter "PowerBalancer".
CO2 saved Amount CO2 saved in operation time
E-total Total amount of energy fed into the grid
Error Identification of the current disturbance / error.
Event-Cnt Counter of events which have occurred
Fac Grid frequency
Grid Type Type of grid the inverter is connected to
h-On h-on indicates how long sufficient DC voltage has been applied to the Sunny
Boy and the Sunny Boy has been active including the time it was not able to
feed to the utility with respect to low DC voltage or operation in stop mode.
h-total Total number of grid-feeding operational hours
I-dif Differential current of the PV system (inverter and PV generator)
Iac Grid current (active current)
Inv.TmpVal Temperature measured at IGBT module
Ipv PV current
Max Vpv Maximum PV input voltage
Mode Display of the current operating mode
Pac Generated AC power
Pcb.Tmp.Val Temperature measured at PCB board
Power On Total system start-up counter
Riso Insulation resistance of the PV system before grid connection
Serial Number Serial number of inverter
Vac Grid voltage L1 - L2
Vac L1 Grid voltage L1 - N
Vac L2 Grid voltage L2 - N