We would like to support your daily work. Therefore, we start a new series: Service Tips. Amongst others, we give you answers on frequently asked questions.
Today’s tip deals with commissioning: Remember to connect the inverter* to an SMA communication product on the same day as you commission your PV plant.
There are several reasons for doing this. Our inverters and communication products are synchronized when you connect them. For example, the inverter uses the time provided by Sunny Explorer, Sunny Beam, or Sunny WebBox (with Bluetooth®).
Important for Service Cases
If this synchronization is performed days or even weeks after commissioning, the inverter may operate on an unspecified system time.
It may not seem detrimental at first; however, we need to think about the future here. If the inverter actually does have a disturbance or operates ineffectively at some point, it is not possible to track back when and why the event took place. It is only possible to reconstruct the actions leading up to defective operation and resolve it easily when the system time is set properly.
SMA inverters using a Bluetooth® connection via SMA Bluetooth® Piggy-Back offer a unique feature. These inverters terminate their connection to the communication product when they are no longer in feed-in operation. For this reason, you need to connect the inverter to a communication product at least once a day in order to have the correct system time.
Another good bit of advice: The connection between the inverter and the communication product needs to be re-established if the AC and DC power supply has been interrupted for two or more days.
Do you have questions or ideas for us to use as a Service Tip? We are looking forward to your contributions.
*This tip refers to all inverters with a graphic display.
Hans-Josef Hüttges (guest author)
Hans-Josef Hüttges has been working in the SMA Service Division since March 2011 as technical editor. He is responsible for the development of service manuals, e-learning and videos. His desire: To run the New York Marathon.