Fault code24
OVERSPEED means motor speed exceeds 120% of the larger of minimum or maximum speed parameters, possibly due to incorrect settings or inadequate braking. The manual's first action is: “Check for and correct: • Parameter settings for 2001 and 2002. • Adequacy of motor braking torque. • Applicability of torque control. • Brake chopper and resistor.”
- Model
- ABB ACH550
- Display shows
- OVERSPEED (24)
- Type
- Fault code
- Source
- Manual p. 26
What 24 means
OVERSPEED p. 26
Common causes
- Motor speed is greater than 120% of the larger (in magnitude) of 2001 MINIMUM SPEED or 2002 MAXIMUM SPEED. p. 26
What to do
- Check for and correct: • Parameter settings for 2001 and 2002. • Adequacy of motor braking torque. • Applicability of torque control. • Brake chopper and resistor. p. 26
Before you service the product, read the safety instructions in the manual p. 2.
If 24 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 24; 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.