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Heidenhain Controller
Safety · Intermediate · 30-120 minutes
HEIDENHAIN 330-003A - No authorization for testing
HEIDENHAIN alarm 330-003A occurs when attempting to perform axis testing functions while the machine is operating in safety-related mode SOM_1. This safety interlock prevents potentially dangerous axis movements during diagnostic procedures when safety systems are active.
HEIDENHAIN 330-003A - No authorization for testing
No authorization for testing
The axis cannot be tested in the current safety operating mode. A different SOM mode may be required.
Root Cause Summary
HEIDENHAIN alarm 330-003A occurs when attempting to perform axis testing functions while the machine is operating in safety-related mode SOM_1. This safety interlock prevents potentially dangerous axis movements during diagnostic procedures when safety systems are active.
Safety
Causes and Fixes
Check Current Operating Mode
Press MOD key and navigate to Operating Modes menu to verify current SOM status and safety system state.
SOM_1 indicator will be displayed in the status bar when active
Exit Safety Mode
Navigate to MOD > Machine Parameters > Safety and disable SOM_1 mode if testing is required and machine is in safe condition.
Only disable safety mode when machine area is clear and all safety procedures are followed
Verify Safety Circuit Status
Check all E-stops, safety doors, and light curtains are in normal operating state before attempting axis tests.
Use PLC status display to verify all safety inputs are satisfied
Call a technician if:
Prevention
Common Mistakes
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.
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Always verify with your machine manual or a certified technician before performing service procedures.