F226Fault · Power section
Indramat DKC F226: Undervoltage In Power Section
What F226 means
The DC bus voltage fell below the minimum level and the drive shut down.
Symptoms
Fault when power is switched off while enabled, or on supply dips.
Is it repairable?
Repairable when the drive's power supply section is faulty.
Common causes
- Power removed before drive enable was dropped
- Supply disturbance
- Failed bus supply or capacitors
Safe checks
- 1Check the shutdown sequence in the control logic
- 2Measure the supply under load
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
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- F860Overcurrent: short in power stage
- F878Velocity loop error