601Fault · Control moduleUsually repairable
SIMODRIVE 611U 601: Error In AD Conversion, Terminal 56/14 Or 24/20
What 601 means
The control module made a timing error while reading its analog-to-digital converter, so analog values may be wrong.
Symptoms
Fault on power-up or during operation; analog setpoints may misbehave.
Is it repairable?
Yes: 611U control modules are repaired at component level and tested on a drive.
Common causes
- Hardware fault on the closed-loop control module
Safe checks
- 1Power cycle once. If it returns, the control module needs repair
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 SIMODRIVE 611 universal Function Manual.
Related SIMODRIVE 611U faults
- 003NMI due to watchdog
- 006Checksum test error
- 020NMI due to cycle failure
- 028Actual current sensing during power-up
- 504Measuring circuit error, motor measuring system
- 505Measuring circuit error, motor measuring system absolute track