Fault codeA1920
Output data of Drive Bus master (set-points) received at the incorrect instant in time within the Drive Bus clock cycle. The manual's first action is: “Check bus configuration.”
- Model
- Siemens SINAMICS V90, SIMOTICS S-1FL6
- Display shows
- Drive Bus: Receive setpoints after To (A1920)
- Type
- Fault code
- Source
- Manual p. 305
What A1920 means
Drive Bus: Receive setpoints after To p. 305
Common causes
- Output data of Drive Bus master (set-points) received at the incorrect instant in time within the Drive Bus clock cycle. p. 305
What to do
- Check bus configuration. p. 305
- Check parameters for clock cycle synchronization (ensure To > Tdx). p. 305
Before you service the product, read the safety instructions in the manual p. 2.
If A1920 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 A1920; 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.