Commissioning The Inverter - SMA SUNNY BOY 3.0-US Instructions D'installation

SMA Solar Technology AG
7.2

Commissioning the Inverter

Requirements:
☐ The AC circuit breaker must be correctly rated and mounted.
☐ A means of disconnecting the inverter from the PV array must be present.
☐ The inverter must be correctly mounted.
☐ All conductors must be correctly connected.
☐ Unused enclosure openings must be sealed tightly with sealing plugs.
Procedure:
1. Lead the enclosure lid to the Connection Unit and
plug the ribbon cable into the socket on the
communication assembly.
2. Ensure that the ribbon cable is securely plugged into the sockets at both ends.
3. Position the enclosure lid of the Connection Unit on the enclosure and tighten all 6 screws
crosswise (TX 25, torque: 3 Nm ± 0.3 Nm (26.55 in-lb ± 2.65 in-lb)).
4. Turn the DC load-break switch of the inverter to
position I.
5. Switch on the AC circuit breaker.
☑ All three LEDs light up and the display is illuminated. The start-up phase begins.
☑ After approximately 90 seconds, all three LEDs will go out again and the display will
show a succession of different messages with inverter data.
☑ Depending on the available power, the green LED pulses or is continuously illuminated.
The inverter is feeding in.
6. If the LEDs do not start to glow and the display remains dark, the ribbon cable between the
assembly in the enclosure lid and the communication assembly in the inverter is most likely not
properly plugged in. Ensure that the ribbon cable is securely plugged into the sockets at both
ends.
Installation Manual
7 Commissioning
SBxx-1SP-US-41-IA-xx-12 53