What causes Siemens SINUMERIK alarm 300914?

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 300914?

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 300914 complete remedy.

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Siemens SINUMERIK Controller

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

Alarm 300914

Siemens 840D 300914 - Axis drive safe velocity exceeded

This alarm occurs when an axis exceeds the safe velocity limit defined in safety-related machine data, often due to incorrect program parameters or safety configuration issues. SAFETY CRITICAL: Do not modify safety limits without proper authorization and risk assessment.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

300914

Siemens 840D 300914 - Axis drive safe velocity exceeded

Axis drive safe velocity exceeded

Root Cause Summary

This alarm occurs when an axis exceeds the safe velocity limit defined in safety-related machine data, often due to incorrect program parameters or safety configuration issues. SAFETY CRITICAL: Do not modify safety limits without proper authorization and risk assessment.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
STOP OPERATION IMMEDIATELY
Ensure machine is in safe state before proceeding. This is a safety-related alarm.
2
Locate offending block
Check the alarm message for the specific program line and axis causing the issue.
3
Adjust feedrate
Reduce the programmed feedrate or velocity in the identified block to comply with safe limits.
4
Test and restart
Clear the alarm, simulate the program in safe mode, and restart to verify the fix.

Service Recommendedmedium confidence

Call a technician if:

·Always contact authorized personnel for safety parameter modifications
·If program adjustments do not resolve the alarm
·If alarm persists after program corrections
·Before modifying any safety-related machine data

Prevention

Always simulate programs to catch velocity issues before execution
Verify machine data settings match operational requirements
Regular safety system verification and documentation
Ensure operators understand safe velocity limits

Common Mistakes

Overlooking the specific axis mentioned in the alarm
Setting unrealistic feedrates without checking safe limits

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

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