Electrical Connection SMA America, LLC
58 SI5048U-TUS121440 Technical Description
Generator start
The Sunny Island can control generators. The Sunny Island directly supports generators that can be
started/stopped using a single contact.
6.4.5 BatVtgOut Power Supply
The battery voltage is conducted to the outside at these terminals. The battery voltage is fused at both
poles by PTC resistors (max. 0.75 A). Depending on the internal temperature of the Sunny Island, the
tripping threshold is at over 0.75 A.
This connection can be used, for example, to supply a DC contactor for load shedding.
Connecting the BatVtgOut Power Supply
1. Pierce the appropriate place on the cable insert with a pointed object.
2. Starting from the outside, feed the cables with wire-end sleeves through the hole in the Sunny
Island.
3. Connect the cables to the ”BatVtgOut” connection of the 4-pole print terminal.
4. Tighten the print terminal screws (torque: 5 in‑lbs. ‒ 7 in‑lbs. (0.56 Nm ‒ 0.79 Nm)).
☑ The BatVtgOut power supply is connected.
Default Setting of the Relays
By default, relay 1 is set to the generator start function ”AutoGn” and relay 2 is set to the
load shed function ”AutoLodSoc”.
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