7 Commissioning
SMA America, LLC
56
SB3-5TLUS22-IA-en-10
Installation Manual
7.2 Commissioning the Inverter
Requirements:
☐ The AC miniature circuit-breaker must be correctly rated.
☐ The inverter must be correctly mounted and closed.
☐ The DC Disconnect must be correctly mounted and closed.
☐ All cables must be correctly connected.
1. Place the lower enclosure lid with the 6 screws on
the enclosure and tighten them with an Allen key
(AF 3) in the order 1 to 6.
2. Switch on the miniature circuit-breaker.
3. Turn the rotary switch of the DC Disconnect to the
On
position.
☑ The inverter carries out an arc-fault circuit interrupter (AFCI) self test.
☑ The green LED is lit and the display shows the device type, the firmware version, the NetID,
the country data set and display language. The inverter feeds into the grid.
✖ Green LED flashing?
Possible cause of error: The DC input voltage is still too low, or the inverter is monitoring the
power distribution grid.
• If the DC input voltage is sufficiently high, the inverter starts to operate.
✖ The red LED is lit and an error message and event number appear in the display?
• Eliminate the error (see Section 9 "Troubleshooting", page 61).
