Batvtgout Power Supply; Digin Digital Input - SMA SUNNY ISLAND 4548-US Operating Manual

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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.
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.
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.
Operating Manual
6 Electrical Connection
SI4548-6048-US-BE-en-21 61