5 Troubleshooting
SMA Solar Technology AG
Maintenance Manual
SCCPXT-E7-WA-en-37
32
5.3.2
Acknowledging Disturbance Messages via the User Interface
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 disturbance will still be detected after
acknowledgment and the disturbance message will reappear.
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 (see Section 7.4.1, page 66).
3. Select the parameter
Ackn
in the device displaying the error, and set to
Ackn
.
4. Select the button [
Save
].
5.4
Remedial Action in Case of Disturbances
5.4.1
Inverter Behavior in Case of Disturbances
If a disturbance occurs during operation, this may be caused by a warning or an error.
There are two levels assigned to each disturbance which influence the display and system behavior. Only in the case
of certain disturbances will the inverter behavior differ depending on 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.
Inverter behavior in the disturbance levels 1 and 2:
•
Waiting time
The inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. The
inverter 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
inverter then checks whether the cause of the disturbance has been rectified.
If the cause of the disturbance still exists after the waiting time has expired or the disturbance has been
acknowledged, the inverter remains in the operating state "Disturbance."
•
Waiting for acknowledgement
The inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. The
inverter does not feed in until the disturbance is acknowledged.
The cause of the disturbance must be detected on-site. To this end, read off the fault memory and event messages
of the inverter and note down the error numbers.
The cause of the disturbance must be remedied. You will find the corrective measures on the following pages. For
further information, contact us (see Section 9, page 68).
It must be ensured that the inverter and its components are in a proper and safe condition. For this purpose, a
visual inspection should be carried out with special attention to discolorations, contaminations and signs of wear.
The disturbance may be acknowledged only after the elimination of all causes and the completion of the visual
inspection.
Once the disturbance has been acknowledged, it is no longer shown on the touch display. The inverter then
checks whether the cause of the disturbance has been rectified.
If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance still exists
after the disturbance has been acknowledged, the inverter remains in the operating state "Disturbance."
Summary of Contents for SUNNY CENTRAL 1000CP XT
Page 70: ...www SMA Solar com...
