Description
drive module arg and drive unit arg. DC The bus voltage is too high.
Consequences
The system cannot operate until the fault is corrected, and the system will enter the "system interruption" (SYS HALT) state.
Possible causes
If there is a grid voltage drop when feeding energy to the grid, the DC bus voltage will increase. If the grid voltage and inductance are too high, feeding energy to the grid will increase the grid voltage to its maximum value, causing the DC bus voltage to rise.
Recommended actions
- Verify that the drain device is not open and shorted (a separate error should be reported).
- Verify that the configured DC bus capacitance is correct.
- Verify that the grid is able to receive energy.