Fault codeA52901
Braking resistor reaches alarm threshold when the braking resistor’s heat capacity has reached its capacity threshold. The manual's first action is: “Change the external braking resistor.”
- Model
- Siemens SINAMICS V90, SIMOTICS S-1FL6
- Display shows
- Braking resistor reaches alarm threshold (A52901)
- Type
- Fault code
- Source
- Manual p. 312
What A52901 means
Braking resistor reaches alarm threshold p. 312
Common causes
- The heat capacity reaches the threshold (p29005) of the braking resistor capacity. p. 312
What to do
Before you service the product, read the safety instructions in the manual p. 2.
If A52901 is still not resolved
- Contact service / dealer for assistance p. 2 “Qualified Personnel The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions.”
- Contact service / dealer for assistance p. 13 “NOTICE Property damage due to loose power connections Insufficient tightening torques or vibration can result in loose power connections. This can result in damage due to fire, device defects or malfunctions.”
This page summarises what the manufacturer’s manual says about A52901; 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 Siemens. Found a mistake? Report an error.