Menu - Service menu - System analysis
Under System analysis, you will find an overview of the checks and events run during inverter commissioning or inverter start-up.
The analysis can be used to check whether all requirements for inverter feed-in have been met correctly.
Should events arise, you can quickly detect them here and implement any necessary actions.
The system analysis includes the following:
System requirements
Check | Duration of check | Explanation | Potential actions should errors arise |
|---|---|---|---|
HW self-diagnosis | 20 seconds | Hardware check | De-energise the device. Wait one minute and switch back on again. Should the error occur frequently, contact the Support team. |
Communication battery & inverter | 90 seconds |
| In the event of errors:
|
Communication smart meter & inverter | 45 seconds | Establish communication with energy meter (e.g. KOSTAL Smart Energy Meter) | In the event of an error:
|
Battery error | 60 seconds | There is an internal error in the battery system. | Restart battery system. |
External shutdown via network | 120 seconds | External shutdown by energy provider or external control device. | No action necessary. |
DC connections polarity | Error detected | Result with swap detection:
| De-energise the device and check and correct polarity of all DC inputs. Make sure that none of the strings are connected crosswise |
L-N reversal | -- | Result with swap detection. The AC cables have been swapped. | In the event of an error, de-energise the device and check and correct AC cable connection on inverter |
Current events
Check | Duration of check | Explanation | Potential actions should errors arise |
|---|---|---|---|
No event | -- | There are no events present. | No action necessary. |
Waiting time system startup | 60 seconds | -- | No action necessary. |
Signal states of the backup logic are implausible | 30 seconds | In normal mode, the inverter detects the switch position of the backup unit. It is in the backup mode position. An EC6023 event is generated. | Check / correct wiring and/or connected components (KOSTAL BackUp Switch). |
Grid test (NA protection) | Min. 60 seconds The duration of the check depends on the guideline selected. The duration of any grid errors present is added on to this time. | A check is run to determine whether the inverter can safely and correctly feed into the grid. | Please check AC side.
|
Residual current | 10 seconds | Calibration of inverter residual current sensor. Measurement is carried out. If a residual current of > 30 mA is measured, a 1039 event is output. | Check inverter installation. Should the error occur frequently, contact the Support team. |
Insulation measurement | 60 seconds | The insulation measurement needs a stable intermediate circuit voltage. If an insulation resistance of < 150k Ohm is measured, a 1044 event message is generated. |
Should the error occur frequently, contact the Support team. |
Waiting for switch to backup mode | Response time of user | The public grid has failed. | Switch into backup mode or switch on public grid. Confirm message on inverter. |
Waiting for acknowledgement of overload message (backup operation) | Response time of user | After three attempts, the inverter has not been able to commence backup power mode. The loads in the house network are too high for backup mode. | Shut down loads in house network. Confirm message on inverter. |
Waiting time between connection attempts in backup mode | 75 seconds | The waiting time specified by standards between the three connection attempts until the message on the inverter appears. The loads in backup mode are too high. The inverter attempts to re-establish backup mode no more than 3 times. | The loads in backup mode are too high. Reduce the loads in the house network so that the inverter can return to backup mode. Then confirm the message on the inverter. |
PV power too low | 10 minutes | The PV power is too low. The check is restarted after 10 minutes. | No action necessary. |
External limitation active | 1 second | Limitation by external signal
| Disable external limitation. Wait until external shutdown is switched off by energy provider. |
Device is overheated | 1 second | -- |
Should the error occur frequently, contact the Support team. |
PV voltage too low | 15 seconds | Voltage at all PV inputs is too low for feeding in. | No action necessary.
|
Negative DC input voltage detected | 1 second | Reverse polarity detected at the DC inputs. | Check positive and negative pole of DC inputs. De-energise the device and check and correct polarity of all DC inputs. |
Internal system error | 60 seconds | Intermediate circuit voltage is not OK (unbalance). | De-energise the device. Wait one minute and switch back on again. Should the error occur frequently, contact the Support team. |
DC input check active | 300 seconds | Connection detection on DC side for swapping of negative poles and correct battery connection. | The inverter is undergoing the DC connection check. If there is an error, the message from DC connections polarity is displayed and a 1016 event is generated. |
Min. battery SoC reached | 1 second | The battery’s min. SoC has been reached and there is no PV or AC surplus energy available. | Check battery, contact battery manufacturer if necessary. |
Emergency battery charging is in progress (backup operation) | Depends on battery settings. | The battery’s min. SoC has been reached in backup mode. | As soon as sufficient energy is available again from PV, emergency charging of the battery is undertaken. Before this happens, check whether the battery has shut itself down (fuses have tripped on the battery system). Emergency charging is stopped as soon as the start SoC for backup mode has been reached. |
No household consumption | 1 second | -- | No action necessary. There are no errors present. The home consumption is below the set value for Battery discharge as of grid demand of. |