Fault codeF7802
The drive or infeed is not ready after power-on due to insufficient monitoring time, no DC link voltage, or faulty component. The manual's first action is: “• Ensure that there is a DC link voltage. Check the DC link busbar. Enable the in-feed. • Replace the associated infeed or drive of the signaling component.”
- Model
- Siemens SINAMICS V90, SIMOTICS S-1FL6
- Display shows
- Infeed or power unit not ready (F7802)
- Type
- Fault code
- Source
- Manual p. 298
What F7802 means
Infeed or power unit not ready p. 298
Common causes
- After an internal power-on command, the infeed or drive does not signal ready because of one of the following reasons: • Monitoring time is too short. • DC link voltage is not present. • Associated infeed or drive of the signaling component is defective. p. 298
What to do
- • Ensure that there is a DC link voltage. Check the DC link busbar. Enable the in-feed. • Replace the associated infeed or drive of the signaling component. p. 298
Before you service the product, read the safety instructions in the manual p. 2.
If F7802 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 F7802; 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.