Event Description
The measured DC precharge voltage (DC bus voltage) is below the expected or set precharge voltage. The converter may not be able to connecting to such a low voltage.
- This event is usually tiggered after a timeout, which is determined by the application and the mode of the application.
- To avoid high inrush currents, the application prevents the switching of the DC Link to the DC bus, if this error occurs.
- The error is triggered by the converter control unit, which is part of the Power Electronic Unit.
Error view
Elements of the Event page
| Event symbol | Consequences of the event |
 Error event | When an error event occurs, the monitored value has reached its error limit. Error events shutdown the generator |
 Warning event | When a warning event occurs, the monitored value has reached its warning limit. Warning Events don’t shutdown the generator |
 Information event | An Information event is for information purpose only and has no effect on the generator operation |
| Device that triggers this event: | Converter Control Unit (part of the Power Electronic Unit) |
| Warning | No |
| Error | Yes |
Safety instructions
These symbols are used to warn of the possibility of personal injury of lethal danger during certain maintenance work or operations. See Users Manual for Safety Information and complete operating information. Read these instructions carefully. For further information click on the corresponding symbol. Each link opens a new tab.
Causes and solutions
| Common causes | Possible solutions |
| Measurement lines in the power electronics are not connected, mixed up or defective. | Check the measurement lines for correct connection and for defects. |
| A negative voltage (or reverse polarity battery) was connected to the converter DC connectors. | Pay attention to correct polarity. |
| The DC bus voltage breaks down caused by a short circuit or high load in the DC bus system or by a defective battery. Or the DC bus has been disconnected by another system. | Check the DC bus system for short circuits and fix them if necessary. Check the battery. Check, if the DC bus could have been disconnected by another system. |
| A wrong DC voltage parameter is set in the user settings. | Check the DC voltage parameters in the user settings for correct values. |
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