10 Troubleshooting
SMA Solar Technology AG
78
SCCP-JP-BA-A4-en-12
User Manual
10.4.3 Error Numbers 01xx to 13xx - Disturbance on the Utility Grid
After a grid failure, the Sunny Central monitors the utility grid for a certain time before reconnecting.
When the Sunny Central monitors the utility grid after a grid error, the grid monitoring time is maintained.
Certain grid errors cause the Sunny Central to shut down. In this case, the instantaneous value
TmsRmg
indicates the
time for which the Sunny Central monitors the utility grid before reconnecting. This grid monitoring time after a grid error
can be defined in parameter
GdErrTm.
You can prevent automatic reconnection of the Sunny Central after a grid error has occurred by setting the parameters
(see Section 8 "Power Control", page 49). Only after acknowledgement of the error will the Sunny Central switch on
again.
Error no.
Explanation
Behavior of the
Sunny Central
Corrective measures
S 1
S 2
R
0103*
Line voltage is too high.
Overvoltage detected by
redundant monitoring.
30 s
30 s
‒
• Check line voltage.
• Check grid connections.
• Check stability of the utility
grid.
• Make sure the external fuses
function properly.
• Make sure the AC cable
connections are securely
connected.
0104*
Line voltage is too high.
Overvoltage detected by standard
monitoring.
C
C
‒
0203*
Line voltage is too low.
Undervoltage detected by
redundant monitoring.
30 s
30 s
‒
0204*
Line voltage is too low.
Undervoltage detected by standard
monitoring.
30 s
30 s
‒
0205
One line conductor of the utility grid
has failed.
30 s
30 s
‒
Power frequency is too low.
Power frequency fault detected by
standard monitoring.
30 s
30 s
‒
• Check power frequency.
• Check the grid monitoring
relay display.
• Make sure the fuses in the load
circuit function properly.
0503*
Power frequency is too high.
Power frequency fault detected by
standard monitoring.
30 s
30 s
‒
Power frequency is too low.
Power frequency fault detected by
redundant monitoring.
30 s
30 s
‒
0505*
Power frequency is too high.
Power frequency fault detected by
redundant monitoring.
30 s
30 s
‒
0506*
The Sunny Central has detected a
stand-alone grid and disconnected
from the utility grid.
W
W
‒
• Check power frequency.
