SMA SB 1.5-1VL-40 Service Manual - Manual (Page 12)

Event number Message, cause and corrective measures
501 Grid fault
The power frequency is not within the permissible range. The inverter has dis-
connected from the utility grid.
Corrective measures:
• If possible, check the power frequency and observe how often
fluctuations occur.
If fluctuations occur frequently and this message is displayed often,
contact the grid operator and request approval to change the operating
parameters of the inverter.
If the grid operator gives his approval, discuss any changes to the
operating parameters with Service (see Section 11 "Contact", page 33).
507 Temperature AC frequency
The inverter has reduced its power due to a too-high power frequency to en-
sure grid stability.
Corrective measures:
• If possible, check the power frequency and observe how often
fluctuations occur. If fluctuations occur frequently and this message is
displayed often, contact the grid operator and request approval to
change the operating parameters of the inverter. If the grid operator
gives his approval, discuss any changes to the operating parameters with
Service (see Section 11 "Contact", page 33).
601 Grid fault
The inverter has detected an excessively high proportion of direct current in
the grid current.
Corrective measures:
• Check the grid connection for direct current.
• If this message is displayed frequently, contact the grid operator and
check whether the monitoring threshold on the inverter can be raised.
701 Frq. not permitted > Check parameter
The power frequency is not within the permissible range. The inverter has dis-
connected from the utility grid.
Corrective measures:
• If possible, check the power frequency and observe how often
fluctuations occur.
If fluctuations occur frequently and this message is displayed often,
contact the grid operator and request approval to change the operating
parameters of the inverter.
If the grid operator gives his approval, discuss any changes to the
operating parameters with Service (see Section 11 "Contact", page 33).
4 Event Messages SMA Solar Technology AG
Service Manual for Installers SB15-25-SG-en-10 12