003Fault · Control moduleUsually repairable
SIMODRIVE 611U 003: NMI Due To Watchdog
What 003 means
The watchdog on the closed-loop control module expired, which points to a hardware fault in the module's time base.
Symptoms
Drive faults at power-up or at random and will not stay ready.
Is it repairable?
Yes: 611U control modules are repaired at component level and tested on a drive.
Common causes
- Failed control module hardware
- Poorly seated module or memory module
- Electrical noise
Safe checks
- 1Power off, reseat the control module and memory module, check grounding and shielding, then power on. If it returns, the control module has failed
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
- 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
- 507Synchronization error, rotor position