Connecting The Cables; Connecting The Dc Power Cable - SMA SUNNY ISLAND 4.4M Operating Manual

SMA Solar Technology AG
An external control signal can transmit a generator request to the generator management. If you have configured the
generator management for the external generator request, the generator management starts the generator if there is a
high level present. The generator management stops the generator if there is a low level. As a result, all generator run
times are complied with.
Figure 14: Connection of the control cable of an external generator request (example).
Requirements:
☐ The technical requirements of the multifunction relay must be met (see Section 17 "Technical Data", page 180).
Cable requirements:
☐ Copper wire
☐ Conductor cross-section: 0.2 mm² to 2.5 mm²
1. On the Sunny Island, thread both insulated conductors through a ferrite included in the scope of delivery. (see
Section 6.6.6 "Connecting BatVtgOut, DigIn, BatTMP and BatCur", page 66).
2. Connect one insulated conductor of the control cable to terminal BatVtgOut+.
3. Connect one insulated conductor of the control cable to terminal DigIn +.
4. Connect terminal BatVtgOut– to terminal DigIn –. Use the same conductor as in the control cable.
6.6

Connecting the Cables

6.6.1

Connecting the DC Power Cable

Additionally required material (not included in the scope of delivery):
☐ Ethanol
☐ 2 terminal lugs M8, 20 mm to 25 mm wide
Cable requirements:
☐ Conductor cross-section: 50 mm² to 95 mm²
☐ Cable diameters: 14 mm to 25 mm
☐ Only copper cables may be used.
☐ The DC cables must be sized for the maximum battery voltage and the maximum battery current (see battery
manufacturer documentation).
Operating Manual
6 Electrical Connection
SI44M-80H-12-BE-en-10 59