SMA SMC 7000HV Installation - Manual (Page 55)

SMA Solar Technology AG Commissioning
Installation Manual SMC70HV11-IA-IEN112970 55
Minimum frequency
In the last step, the inverter tests the minimum frequency.
During the test sequence, the frequency limit applied is
shown in the display of the inverter.
The frequency limit is increased successively until the shut-
down threshold is reached and the inverter disconnects from the power distribution grid.
Once the inverter has disconnected from the power distribution grid, the display successively shows
the following values one after the other:
• Disconnection value,
• Calibration value,
• Reaction time,
• Current grid frequency.
When the inverter has carried out the 4 tests, it switches to "MPP Operation (MPP)" mode. The original
calibration values are then reset and the inverter automatically connects to the power distribution grid.
If you would like to carry out the test again, you must disconnect the inverter, i.e. disconnect it on the
AC and DC sides and then later re-activate it. You can then restart the self-test as described in section
6.3.1 "Starting the Self-Test by Tapping" (page 51). The inverter starts again the test sequence, as
described in section 6.3.2 "Completion of the Self-Test" (page 52).