SMA America, LLC Displays and messages
Installation Guide SB30-40US-IUS103030 73
8.5.1 Measuring channels
8.5.2 Operating mode
Vpv: PV input voltage
Vpv Setpoint: MPPT DC voltage target
Iac: Grid current
Vac: Grid voltage L1 - L2
Vac L1: Grid voltage L1 - N
Vac L2: Grid voltage L2 - N
Fac: Grid 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: Error current
Vfan: Fan voltage
E-Total: Total energy yield
h-Total: Total operation hours
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.
Power On: Total system start-up counter
Event-Cnt: Event counter
Serial Number: Serial number of the Sunny Boy
CO2 saved: Amount CO2 saved in operation time
Mode: Current operating mode
Grid Type: Type of grid the Sunny Boy is connected to
Error: Description of fault
Stop: Manual system stop
Offset: Offset calibration of the electronics (at start-up)
Waiting: PV voltage is not high enough to start
Grid monitoring: Synchronizing to grid (at start-up)
MPP-Search: MPPT range test (at start-up)
MPP: Sunny Boy is in MPP mode (normal operation)
V-Const: Sunny Boy is in constant voltage MPP mode
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