Installation Manual

SMA Solar Technology America LLC 6 Electrical Connection
Operating Manual SI4548-6048-US-BE-en-21 61
6.4.7 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 over 0.75 A.
This connection can be used, for example, to supply a DC contactor for load shedding.
Connecting the BatVtgOut Voltage Supply
1. Pierce a hole at a suitable location in the cable support sleeve using a sharp object.
2. Starting from the outside, lead the insulated conductors with bootlace ferrules through the hole
in the Sunny Island.
3. Connect the insulated conductors to the "BatVtgOut" terminal of the 4-pole terminal.
4. Tighten the screws of the terminal (torque: 5 in-lb to 7 in-lb (0.56 Nm to 0.79 Nm)).
☑ The BatVtgOut voltage supply is connected.
6.4.8 DigIn Digital Input
The DigIn connection is used as a digital input for external electrical sources.
Connecting the DigIn Digital Input
1. Pierce a hole at a suitable location in the cable support sleeve using a sharp object.
2. Starting from the outside, lead the insulated conductors with bootlace ferrules through the hole
in the Sunny Island.
3. Connect the insulated conductors correspondingly to the "DigIn" terminal of the 4-pole terminal.
Area of the input voltage at the DigIn input
A voltage of between 5 V and 63 V may be present at the digital input DigIn.
Corresponding functions
If you operate the system in mixed operation with generator and utility grid (GenGrid) in
parallel, use the relays on the master device in order to activate the corresponding functions.