Alarm codeA7457
An illegal combination of input signals that are simultaneously active has been detected in EPOS operation. The manual's first action is: “Check the appropriate input signals and correct.”
- Model
- Siemens SINAMICS V90, SIMOTICS S-1FL6
- Display shows
- EPOS: Combination of Input signals Illegal (A7457)
- Type
- Alarm code
- Source
- Manual p. 307
What A7457 means
EPOS: Combination of Input signals Illegal p. 307
Common causes
- An illegal combination of input signals that are simultaneously set was identified. p. 307
What to do
- Check the appropriate input signals and correct. p. 307
Before you service the product, read the safety instructions in the manual p. 2.
If A7457 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 A7457; 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.