SMA Solar Technology America LLC
4. Turn the AC load-break switch of the inverter to
position I.
5. Switch on the AC circuit breaker.
☑ All three LEDs light up. The start-up phase begins.
☑ All three LEDs go out again after approximately 90 seconds.
☑ Depending on the available power, the green LED pulses or is continuously illuminated. The
inverter is feeding in.
✖ 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.
✖ The red LED is glowing?
An event has occurred.
• Find out which event has occurred and, if necessary, initiate countermeasures.
7.3
Establishing a connection to the user interface
7.3.1
Establishing a direct connection via WLAN
The procedure can be different depending on the terminal devices used (e.g. computer, tablet PC
or smartphone). If the procedure described does not apply to your device, establish the direct
connection via WLAN as described in the manual of your device.
Procedure:
1. If your computer, tablet PC or smartphone has a WPS function:
• Activate the WPS function on the inverter. To do this, tap twice in succession on the
enclosure lid of the DC connection unit next to the LEDs.
☑ The blue LED flashes quickly for approx. two minutes. The WPS function is active.
• Activate the WPS on your device.
☑ The connection with your device will be established automatically. It can take up to
20 seconds for this connection to be established.
2. If your computer, tablet PC or smartphone does not have a WPS function:
• Search for WLAN networks with your device.
• Select the SSID of the inverter SMA[serial number] in the list with the found WLAN
networks.
Installation Manual
7 Commissioning
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STP50-US-40-IA-en_es-11
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