F822Fault · Encoder / feedbackUsually repairable
Indramat DKC F822: Encoder 1 Failure Signal Too Small
What F822 means
The analog sine/cosine signals from the motor encoder are too weak (or too strong) for the drive to read.
Symptoms
Fault at power-up or intermittently as the cable moves.
Is it repairable?
Yes: encoder replacement and alignment on MKD and MHD motors are standard repairs.
Common causes
- Damaged feedback cable or connector
- Failed motor encoder
- Contamination in the connector
- Faulty feedback input on the drive
Safe checks
- 1Inspect the feedback cable and connector
- 2Try a known-good cable
Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.
Reviewed by AutomIQ repair technicians. Code and name from the ECODRIVE DKC and ECODRIVE03 diagnostic descriptions.
Related Indramat DKC faults
- F218Amplifier overtemp. shutdown
- F219Motor overtemp. shutdown
- F226Undervoltage in power section
- F281Mains fault
- F860Overcurrent: short in power stage
- F878Velocity loop error