Grid settings check

For a frequency fault, read the measured frequency on the inverter LCD. If the value is within the limit, restart the inverter. A similar Solectria procedure blames out-of-range grid frequency or loose AC connections. It says to watch for 10 minutes to see if the alarm clears by itself, check the frequency and AC wiring, and contact customer service if the error stays. A wrong grid standard or country data set can make the inverter run improperly, damage it or stop it from running at all. On SMA units it can look like the inverter is waiting for grid voltage. Only certified personnel should set the grid standard, and only to a configuration approved for the location. Settings meant for grid operators should not be changed unless you are specifically told to. To verify the programmed grid protection settings, open the inverter's view menu and compare each setpoint with the required values. O&M guidelines say plant control settings should be monitored at the inverter and grid injection levels. They list a yearly check of inverter parameters as a minimum requirement.

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• sentence 3: support check: partial - The warning covers improper operation, damage or not operating, and the waiting-for-grid-voltage message lists a misconfigured country data set as a cause. The passages never name SMA or say the wrong standard makes the inverter look like it is waiting for grid voltage, though that is implied.
• sentence 5: support check: partial - The passage gives the path Maintenance → Grid Protection → View and says to verify setpoints against Table 1. It does not say 'view menu' exactly, and the required values are in a table the passage does not include.
• sentence 6: support check: partial - Monitoring control settings at inverter and grid injection level is stated. The annex lists 'Check parameters' for inverters as a yearly minimum requirement, but the passage does not tie that check to control settings. Calling it a guideline 'listing' this is a reasonable reading. -->