Sunny Boy Installation Manual

7 Commissioning
SMA Solar Technology AG
Installation ManualSBxx-1SP-US-41-IA-xx-1052
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.
7. If the green LED is still flashing, the conditions for activating feed-in operation are not yet met.
As soon as the conditions for feed-in operation are met, the inverter starts with feed-in
operation and, depending on the available power, the green LED will light up continuously or
it will pulse.
8. If the red LED lights up, an error has occurred. Rectify the error (for information regarding
troubleshooting see the user manual under www.SMA-Solar.com).
ENGLISH