SMA Sunny Island 2012 Technical Description page 138

Connecting External Sources
Information
If GnTm1Str = GnTm2Str, only t1 is active!
The time intervals t1 and t2 are assigned charge states for start-up and stop with the "234.03
GnSocTm1Str", "234.04 GnSocTm1Stp", "234.05 GnSocTm2Str" and "234.06 GnSocTm2Stp"
parameters. GnSocTm1Strt designates the battery charge state at which the generator is started
during the t1 time and GnSocTm1Stp designates the charge state at which the generator is switched
off during t1. The GnSocTm2Str and GnSocTm2Stp parameters are similarly defined in relation to
the time t2.
Example
The figure displays an example of the settings if operation of the generator at night is to
be avoided as much as possible. Between 6 a.m. and 6 p.m., the generator is started at
a charge state (SOC) of 40 % and by contrast, the battery is discharged to 30 % at night
(between 6 p.m. and 6 a.m.) before the diesel generator starts.
138 SI2012_2224-TEN082311
SMA Solar Technology AG
Technical Description