SMA SI 3324 Installation - Manual (Page 147)

SMA Technologie AG Troubleshooting/Problem Solving
Installation Guide SI3324/4248-14:SE2406 Page 147
"Switching Off" (Page 85). Note that this causes a dropout in the stand-alone
grid and the loads are no longer supplied.
- You have not correctly entered the installer password. Check whether you are
actually in "Installer Level" (see section 8.3 "Password Entry" (Page 69)). If
necessary, repeat the calculation and entry of the password.
5. The Sunny Island 3324/4248 only briefly switches to the generator and
constantly changes from battery charging mode (Charge mode) to inverter
mode (Invert mode).
- The "24-2 AmpacGenMax" parameter (see section 8.5.2 "Setting the Output
Current Limit" (Page 77)) is too high. Set the "24-2 AmpacGenMax"
parameter to a value that is 85 % of the nominal generator current.
- The limits for the maximum permissible AC voltage or the minimum permissible
frequency of the generator are too strict. Increase the limits for voltage and/
or frequency according to the technical data of your generator.
6. The stand-alone grid frequency is not 50 Hz.
- The Sunny Boy inverter is controlled via the frequency (see section 13.3
"Frequency Shift Power Control (FSPC)" (Page 120)).
- The "AFRA" function of the Sunny Island 3324/4248 is activated (see the
Sunny Island 3324/4248 user manual, section "Automatic Frequency
Adjustment").
7. The "VAC-Low" fault (output voltage too low) occurs when the Sunny Island
3324/4248 is started.
- A short-circuit exists in the stand-alone grid. Check the AC output connections
of the stand-alone grid (see section 5.3 "AC Connection" (Page 40)).
- The loads connected to the stand-alone grid are too heavy. The power/
electrical energy of the Sunny Island 3324/4248 is not sufficient to supply the
loads. Switch of some of the loads and restart the Sunny Island 3324/4248.