DC OVERVOLT indicates intermediate circuit DC voltage is too high from input power issues, deceleration settings, or overvoltage conditions. The manual's first action is: “Check for and correct: Static or transient overvoltages in the input power supply. Insufficient deceleration time (parameters 2203 DECELER TIME 1 and 2206 DECELER TIME 2). Verify that overvoltage controller is ON (using parameter 2005). Interaction with external input filter.”
- Model
- ABB ACH550
- Display shows
- DC OVERVOLT (2)
- Type
- Fault code
- Source
- Manual p. 24
What 2 means
DC OVERVOLT p. 24
Common causes
- Intermediate circuit DC voltage is excessive. p. 24
What to do
- Check for and correct: Static or transient overvoltages in the input power supply. Insufficient deceleration time (parameters 2203 DECELER TIME 1 and 2206 DECELER TIME 2). Verify that overvoltage controller is ON (using parameter 2005). Interaction with external input filter. p. 24
Before you service the product, read the safety instructions in the manual p. 2.
If 2 is still not resolved
- contact the factory or your local Authorized Service Center for repair or replacement. p. 2 “Never attempt to repair a malfunctioning ACH550; contact the factory or your local Authorized Service Center for repair or replacement.”
This page summarises what the manufacturer’s manual says about 2; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with ABB. Found a mistake? Report an error.