10 Troubleshooting
SMA Solar Technology AG
76
SCCP-JP-BA-A4-en-12
User Manual
Procedure:
1. If an insulation error has occurred, switch the insulation monitoring device back on.
2. Turn the key switch to
Stop
, wait two seconds, and then turn back to
Start
.
10.3.2 Acknowledging Error Messages via the User Interface
You will only be able to acknowledge error messages via the user interface after entering the installer password.
Procedure:
1. If an insulation error has occurred, switch the insulation monitoring device back on.
2. Log into the user interface.
3. Select the parameter
Ackn
in the device displaying the error, and set to
Ackn
.
4. Confirm the entry with [
Save
].
10.4 Error Messages
10.4.1 Behavior of Sunny Central Inverters under Fault Conditions
If a disturbance occurs during operation of the Sunny Central, this may be caused by a warning or error.
Each disturbance has two levels influencing display and system behavior. Only in the case of certain disturbances does
the Sunny Central behavior differ according to the level. The level is increased from 1 to 2 if the disturbance occurs five
times within two hours or without interruption for two hours.
Behavior of the Sunny Central in error levels 1 and 2:
•
Waiting Time
The Sunny Central switches to the operating state "Fault" and opens the AC contactor and the DC switchgear.
The Sunny Central does not feed into the grid for the defined waiting time.
The waiting time specifies how long the disturbance will be shown on the touch display and saved as a disturbance.
Once the waiting time has elapsed, the disturbance is no longer shown on the touch display. The Sunny Central then
checks whether the cause of the error has been rectified.
If the cause of the disturbance still exists after the waiting time has expired or the disturbance has been
acknowledged, the disturbance returns and the Sunny Central remains in the operating state "Fault".
•
Waiting for Acknowledgement
The Sunny Central switches to the operating state "Fault" and opens the AC contactor and the DC switchgear.
The Sunny Central will not feed in until the disturbance has been acknowledged.
Once the disturbance has been acknowledged, it is no longer shown on the touch display. The Sunny Central then
checks whether the cause of the error has been rectified.
If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance is still present
after it has been acknowledged, the disturbance returns.
• Day Change
The Sunny Central switches to the operating state "Fault" and opens the AC contactor and the DC switchgear.
The Sunny Central does not feed into the grid.
The disturbance is automatically reset when the day changes. Once the disturbance has been reset, it is no longer
shown on the touch display. The Sunny Central then checks whether the cause of the error has been rectified.
If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance is still present
after the day has changed or after it has been acknowledged, the disturbance returns.
Dealing with disturbances
Disturbance messages should only be acknowledged once the underlying causes have been eliminated.
If the causes of the disturbance have not been eliminated, the error will still be detected after acknowledgment and
the disturbance message will reappear.
