SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual page 128

9 Troubleshooting
Error no. Explanation
6119 Data structure for communication
between operation control unit
and digital signal processor is in-
valid.
6120 Watchdog tripping error
6121 No response from watchdog
6122 Ten internal monitoring errors have
occurred in succession.
6128 General error
6404 Overcurrent at line conductor L1,
L2 or L3
6405 Overvoltage in the DC link of the
inverter bridge
6410 24 V supply voltage is invalid.
6417 15 V supply voltage is invalid.
6418 Overtemperature of the inverter
bridge
6422 Inverter bridge in undefined state
6423 Overtemperature in the switch
cabinet
6425 Synchronization error with utility
grid
6427 Sensor error of DC voltage mea-
surement
6440 The MV transformer is no longer
hermetically sealed.
6441 Sensor error during measurement
of DC voltage
6443 Unspecified error in digital signal
processor
6447 Self-test of inverter bridge failed
6448 Insulation monitoring provides non-
permitted values
6451 Measured AC voltage of the in-
verter is less than utility grid volt-
age.
128 MVPS22JP-SH-en-11
Inverter behavior Corrective measures
S1 S2 R
5 min 5 min x • Contact Service partner.
30 s W ‒ • Contact Service partner.
30 s W ‒ • Contact Service partner.
W 5 min ‒ • Contact Service partner.
5 min 5 min x • Contact Service partner.
C Q x • Contact Service partner.
30 s 5 min ‒ • Contact Service partner.
5 min 5 min x • Contact Service partner.
5 min 5 min x • Contact Service partner.
5 min 15 ‒ • Contact Service partner.
min
30 s 5 min ‒ • Contact Service partner.
5 min 30 ‒ • Contact Service partner.
min
30 s 5 min x • Contact Service partner.
30 s C ‒ • Contact Service partner.
30 s 5 min ‒ • Check the MV transformer.
30 s 30 s ‒ • Contact Service partner.
30 s ‒ x • Contact Service partner.
Q Q ‒ • Contact Service partner.
W W ‒ • Check insulation monitoring.
W W ‒ • Contact Service partner.
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