What causes Siemens SINUMERIK alarm 300004?

A feed module is inserted in the rack location determined by the drive logic number, but in the corresponding NCK-specific MD 13040 DRIVE_TYPE, a main spindle is defined (or vice versa).

How do I fix Siemens SINUMERIK alarm 300004?

1. Please inform the authorized personnel/service department. 2. Select MD 13010 DRIVE_LOGIC_NR and search for the drive logic number that is indicated in the alarm text. 3. The location index number + 1 results in the associated rack location number. 4. The FDD/MSD module belonging to this location is determined by the configuration in MD 13040 DRIVE_TYPE for the same location index. 5. FDD: identifier 1, MSD: identifier 2. 6. Switch control OFF - ON. 2-689

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-60 minutes

Alarm 300004

Siemens 300004 - Axis drive wrong drive type (FDD/MSD)

SINUMERIK alarm 300004 Drive Overtemperature occurs when the drive module's internal temperature exceeds the threshold defined in MD1400 (temperature monitoring parameters). This typically results from inadequate cooling, excessive load conditions, or drive hardware degradation affecting thermal management.

Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

300004

Siemens 300004 - Axis drive wrong drive type (FDD/MSD)

Axis drive wrong drive type (FDD/MSD)

Root Cause Summary

SINUMERIK alarm 300004 Drive Overtemperature occurs when the drive module's internal temperature exceeds the threshold defined in MD1400 (temperature monitoring parameters). This typically results from inadequate cooling, excessive load conditions, or drive hardware degradation affecting thermal management.

Safety

Drive/power/encoder circuit: hazardous voltages may remain in the DC link after power-off. Lock out / tag out, wait for discharge per the drive documentation, and use qualified personnel only.

Causes and Fixes

1
Check Drive Cabinet Cooling
Navigate to HMI > Diagnostics > Drive > Temperature Display to verify current drive temperatures against MD1400 limits.
Normal operating temperature should be 20-30°C below the alarm threshold
2
Inspect Cooling Fans
Physically inspect all cabinet cooling fans for operation. Check fan status in Service > Drive > Hardware Status menu.
Ensure cabinet power is locked out before accessing internal components
3
Clean Heat Exchangers
Remove accumulated debris from drive heat sinks and air filters. Check air flow paths are unobstructed.
Use compressed air at low pressure to avoid damaging sensitive components
4
Verify Ambient Temperature
Ensure cabinet ambient temperature is within specification (typically <40°C). Check MD1402 for ambient temperature monitoring if equipped.

DIY Feasiblehigh confidence

Call a technician if:

·Drive hardware replacement required
·Repeated alarms after cooling system repair
·Temperature sensors giving inconsistent readings

Prevention

Schedule regular cooling system maintenance
Monitor drive loading through HMI trending
Maintain proper cabinet ambient temperature
Replace air filters quarterly

Common Mistakes

Ignoring gradual temperature increases
Operating with failed cooling fans
Incorrect motor parameter settings
Blocking cabinet ventilation during maintenance

Related Alarms

300001 300005 25080 25081

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