SMA America, LLC
Displays and Messages
Installation Guide
SB50US-80US-eng-IUS112633
73
8.4.1 Measuring Channels
Vpv:
PV input voltage
Vpv Setpoint:
MPPT DC target voltage
Iac:
Grid current
Vac:
Grid voltage L1 - L2
Vac L1:
Grid voltage L1 - N
Vac L2:
Grid voltage L2 - N
Fac:
Power frequency
Pac:
Power fed to grid
Vpv-PE:
PV voltage to earth (for troubleshooting PV ground faults)
Temperature:
Temperature measured at IGBT module
Ipv:
PV current
Max Temperature:
Max temperature measured at IGBT
Max Vpv:
Max. PV input voltage
I-dif:
Fault current
Vfan:
Fan voltage
E-Total:
Total energy yield
h-Total:
Total operating hours
h-on:
h-on displays how long sufficient DC voltage has been applied at the Sunny
Boy and how long the Sunny Boy has been in operation. The displayed
value contains the time when the Sunny Boy was unable to feed into the
power distribution grid due to the DC voltage being too low or due to
"STOP" mode.
Power On:
Total number of system starts
Event-Cnt:
Event counter
Serial Number:
Serial number of the Sunny Boy
CO2 saved:
Amount of CO2 saved during the operating time
Mode:
Current operating mode
Grid Type:
Type of grid the Sunny Boy is connected to
Error:
Description of fault
