SMA MEDIUM VOLTAGE POWER STATION 500SC-JP - Page 124

After a grid failure, the inverter monitors the utility grid for a specific period before reconnecting. When the inverter
monitors the utility grid after a grid error, the grid monitoring time is complied with. Certain errors, such as grid errors,
cause the inverter to shut down. In this case, the instantaneous value TmsRmg indicates the time for which the inverter
monitors the utility grid before reconnecting. This grid monitoring time can be defined in parameter GdErrTm.
Error no. Explanation Inverter behavior Corrective measures
S1 S2 R
0103* Grid voltage is too high. Overvolt-
age detected by redundant moni-
toring.
30s 30s ‒ • Check the grid voltage.
• Check grid connections.
• Check stability of the utility grid.
• Make sure the external fuses work
properly.
• Make sure the AC cable connections
are tight.
0104* Grid voltage is too high. Overvolt-
age detected by standard monitor-
ing.
C C ‒
0203* Grid voltage is too low. Undervolt-
age detected by redundant moni-
toring.
30s 30s ‒
0204* Grid voltage is too low. Undervolt-
age detected by standard monitor-
ing.
30s 30s ‒
0205* Grid synchronization not possible 30s 30s ‒
0404* Frequency change per second too
high for grid operation
30s 30s ‒ ‒
0502* Power frequency is too low. Power
frequency disturbance detected by
standard monitoring.
30s 30s ‒ • Check power frequency.
• Check the display of the grid monitoring
relay.
• Make sure the fuses in the load circuit
function properly.
0503* Power frequency is too high.
Power frequency disturbance de-
tected by standard monitoring.
30s 30s ‒
0504* Power frequency is too low. Power
frequency disturbance detected by
redundant monitoring.
30s 30s ‒
0505* Power frequency is too high.
Power frequency disturbance de-
tected by redundant monitoring.
30s 30s ‒
0506* The inverter has detected a stand-
alone grid and has disconnected
from the utility grid.
W W ‒ • Check power frequency.
0801* One line conductor of the utility
grid has failed.
30s 30s ‒ • Check the grid voltage.
• Make sure the external fuses work
properly.
• Make sure the AC cable connections
are tight.
0802*
9 Troubleshooting
SMA Solar Technology AG
System ManualMVPS22JP-SH-en-11124