Troubleshooting
SMA Solar Technology AG
18
SB33_38-BA-BEN114230
User Manual
7.2 Measurement Channels
If your inverter is equipped with a communication product, numerous measuring channels and
messages can be transmitted for diagnostics.
Measurement channel
Description
E-total
Total amount of energy fed in
Event-Cnt
Number of events that have occurred
Fac
Power frequency
Error
Identification of the present disturbance/error
h-on
Total operating hours
h-total
Total number of operating hours in feed-in operation
Iac
Grid current
Ipv
Direct current
Is
Apparent current
Power On
Total number of grid connections
Pac
Generated AC power
PF
Displacement power factor cos φ
Phase
The phase to which the inverter is connected.
Qac
Reactive power
Riso
Insulation resistance of the PV plant before connecting to the
power distribution grid.
Serial number
Inverter serial number
Status
Display of the current operating state
Vac
Grid voltage
Vpv
PV input voltage
Vpv-Setpoint
PV setpoint voltage
