Overvoltage

What does 7 mean?

The DC bus voltage (VDC) has exceeded the inverter’s 'Overvoltage limit'. The inverter will switch off until VDC drops, but if it remains high for 5-10 seconds, it will trip with an alarm. This is typically caused by excessive supply voltage, or more commonly, by regenerative energy from the motor during rapid deceleration with insufficient ramp-down time.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Consider installing a braking resistor or braking chopper if rapid deceleration is required and overvoltage persists.