SMA SB 240 - Manual (Page 53)

Event
number Event, cause and corrective measures
501 Grid fault / Grid frequency disturbance (501)
The power frequency is not within the permissible range. The inverter has disconnected
from the utility grid.
Corrective measures:
• If possible, check the power frequency and observe how often major fluctuations
occur.
If fluctuations occur frequently and this message is displayed often, contact the
grid operator. The grid operator must approve changes to the operating
parameters of the inverter.
If the grid operator gives his approval, discuss any changes to the operating
parameters with the SMA Service Line.
1001 Installation failure grid connection / L/N swapped (1001)
The conductors L and N are swapped or PE is not connected.
Corrective measures:
• Check whether the connecting terminal plates Grid and Inverter of the
Sunny Multigate are correctly assigned.
• If the connecting terminal plates Grid and Inverter are not correctly assigned,
disconnect the Sunny Multigate from all voltage sources (see Section 10, page
50) and connect the conductors L, N and PE correctly.
• Once the connecting terminal plates are correctly assigned, check whether the
AC field plugs or junction boxes between the inverters and the Sunny Multigate
are correctly assembled.
– Disconnect the inverter from all voltage sources (see Section 9, page 48).
– Check the assembling. If present, remove the AC field plug (see
Section 13.1 "Disconnecting the AC Field Plug", page 64) and assemble it
correctly (see Section 6.4 "Assembling the AC Field Plug", page 33).
• If the connecting terminal plates Grid and Inverter of the Sunny Multigate are
correctly assigned, the inverter is correctly connected, the AC field plugs or
junction boxes used are correctly assembled and this message is still displayed,
contact the SMA Service Line.
11 Troubleshooting SMA Solar Technology AG
Installation Manual 53 SMA-SB240-IA-en-12