F860Fault · Power sectionUsually repairable
Indramat DKC F860: Overcurrent Short In Power Stage
What F860 means
Current in the power transistor bridge rose far above the drive's peak rating, so the drive went torque-free at once.
Symptoms
Fault on enable or during motion; the motor brake drops in.
Is it repairable?
Yes: power section repair is one of our most common DKC repairs.
Common causes
- Short in the motor cable or motor
- Failed power section in the drive
- Badly set current loop parameters
Safe checks
- 1With power off, megger the motor and cable phase to ground and phase to phase
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
- F822Encoder 1 failure: signal too small
- F878Velocity loop error