SMA
Technologie AG
Battery Management
Technical Description
SI5048-11:EE4206
Page 93
The limits for all three levels can be set independently of one another. This allows
individual levels to be skipped.
For level 1 and 2, a hysteresis of 5 % of the SOC charge level is designated for exiting
this state.
The battery preservation mode is exited if there is an external voltage source on AC2.
However, this function is no longer active if the Sunny Island 5048 has completely
switched off in level 3.
The battery preservation mode on the Sunny Island 5048 can be exited by manually
starting the device. If, within 5 minutes (see above), charging current is detected, the
Sunny Island 5048 continues to operate; otherwise, it switches off again.
13.6 Battery Diagnostics
In the menu "#342 Statistic Battery", many values are displayed that provide
information on the past operational behavior of the battery. These values are helpful in
checking the efficiency of the set parameters and in viewing the typical operating
conditions of the battery (see section 18.3 "Diagnostics" (Page 138)).
If the BatPro1Soc parameter < BatPro2Soc, level 1 is skipped and only level 2 is
performed.
In inverter mode, the Sunny Island 5048 charges the battery with 25 W. If the
device is in standby mode, only the on-board power supply, which requires
approx. 4 W, is powered. This results in a savings of 21 W.
Using the conditions described in level 1 of the battery preservation mode for
conversion purposes and assuming an operation time from 6 a.m. to 10 p.m., that
results in 336 Wh/day. That in turn corresponds to 7 Ah at 48 V and thus 210 Ah
per month (30 days).
Summary of Contents for Sunny Island 5048
Page 22: ...The Sunny Island 5048 SMA Technologie AG Page 22 SI5048 11 EE4206 Technical Description...
Page 26: ...Safety Instructions SMA Technologie AG Page 26 SI5048 11 EE4206 Technical Description...
Page 94: ...Battery Management SMA Technologie AG Page 94 SI5048 11 EE4206 Technical Description...
Page 114: ...Connecting External Sources SMA Technologie AG Page 114 SI5048 11 EE4206 Technical Description...
Page 160: ...Contact SMA Technologie AG Page 160 SI5048 11 EE4206 Technical Description...
Page 169: ...SMA Technologie AG Glossary Technical Description SI5048 11 EE4206 Seite 169...
Page 171: ......