Sma Sunny Boy Control User Manual download pdf (Page 118)

Sunny Boy Control SMA Technologie AG

User Manual SUNBC-14:NE0206 114

You’re measuring Iac (the current in ampere) with AIN-1 and Vac (the

voltage in volts) with AIN-2 on the AC side. Using two variables, Pac (the

power output in watts) can be calculated, and using integration, Eac (the

energy in kWh) can be calculated. One kilowatt being 1,000 watts and

one hour being 3,600 seconds, Ws are converted into kWh by division

through 3.6E6 (corresponding to 1000 * 3600).

AIN-1: +Iac, A

AIN-2: +Uac, V

VAR-1: +Pac, W, =[Iac]*[Uac]

VAR-2: +Eac, kWh, =INT([+Pac]/3.6E6)

Hardware-Based Configuration







Function of the variable



deactivated, activated









Name of the channel







Measuring unit







Formula to be calculated

Fig. 7.20: Configuration of variables

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 168 169

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Sma Sunny Boy Control User Manual Page 118