What causes Siemens SINUMERIK alarm 300799?

SINAMICS drive hardware fault requiring investigation. Drive parameter configuration error. Axis motor or feedback system fault triggering drive protection. Communication fault on the drive bus. Power supply issue affecting the drive module.

How do I fix Siemens SINUMERIK alarm 300799?

1. Check the SINAMICS drive for active fault codes in the diagnostics screen. 2. Power cycle the machine to clear transient faults. 3. Review SINAMICS parameters for the affected drive axis. 4. Check the SINUMERIK axis diagnostics for related NC alarms. 5. Consult the Siemens SINAMICS alarm manual for alarm 300799 complete remedy.

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Program/G-code · Intermediate · 30-120 minutes

Alarm 300799

Siemens 840D 300799 - Axis drive data backup and reboot required

This alarm occurs when drive machine data have been modified, requiring parameter recalculation and a system reboot to apply changes. Fix by recalculating parameters and saving data as prompted.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

300799

Siemens 840D 300799 - Axis drive data backup and reboot required

Axis drive data backup and reboot required

Siemens SINAMICS drive alarm 300799: Axis drive data backup and reboot required. This alarm indicates a fault condition in the SINAMICS servo drive system. Refer to the Siemens SINAMICS fault list documentation for the complete remedy.

Root Cause Summary

This alarm occurs when drive machine data have been modified, requiring parameter recalculation and a system reboot to apply changes. Fix by recalculating parameters and saving data as prompted.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
SAFETY FIRST - Stop all machine operations
Ensure machine is in a safe state, all axes stopped, and spindle off before proceeding with parameter changes.
2
Document current settings
Record current machine data values before making changes for rollback purposes.
3
Recalculate parameters
Press the CALCULATE softkey to update control parameters based on modified data.
4
Save machine data
Save the updated machine data to ensure changes are retained.
5
Controlled system reboot
Perform a controlled shutdown and reboot. Verify all safety systems are functional after restart.

Service Recommendedmedium confidence

Call a technician if:

·If you are not trained in Siemens drive parameter modification
·If the alarm persists after recalculating and rebooting
·If machine data changes are unclear or inaccessible
·If you are unsure about any parameter values
·Before making any drive machine data changes if not properly trained

Prevention

Document machine data changes before saving
Follow proper procedure for parameter updates

Common Mistakes

Skipping the save step after recalculation
Ignoring the need for a reboot

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Always verify with your machine manual or a certified technician before performing service procedures.