Sma SUNNY BOY User Manual download pdf (Page 28)

Measurement Channels and Messages SMA Solar Technology AG

28 SB_SMC-BEN092840 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

6.1 Measuring Channels

Measuring

channel

Description

Balancer Displays the currently active operating mode of the Sunny Mini Central, which

has been set via the operating parameter "PowerBalancer".

Earthfault / Riso Insulation resistance of the PV system before grid connection

E-total Total amount of energy fed into the grid

Error Identification of the current disturbance / error.

Error-Cnt Number of errors which have occurred since the last reset

Event-Cnt Number of events which have occurred

Fac Grid frequency

Fault current Differential current of the PV system (inverter and PV generator)

h-On Total number of operating hours

h-total Total number of grid-feeding operational hours

Iac Grid current (active current)

Ipv DC current

Is Apparent current (applies only to inverters with Reactive Power Control)

Mode Display of the current operating mode

Power On Total number of grid connections

Pac Generated AC power

Phase The phase to which the inverter is connected. The phase (L1 - L3) is set via the

operating parameter "Grid connection".

PF Displacement factor cos ϕ (applies only to inverters with Reactive Power

Control)

Qac Reactive power (applies only to inverters with Reactive Power Control)

Sac Apparent power (applies only to inverters with Reactive Power Control)

Serial Number Serial number of inverter

Vac Grid voltage

Vfan,

V-Fan

Fan supply voltage (only in inverters equipped with an active cooling system)

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Sma SUNNY BOY User Manual Page 28