Troubleshooting steps
high
SINUMERIK 840D sl
300502 – Spindle motor thermal overload
Spindle motor thermal overload protection activated
Details
alarm
Error typeMotor thermal
MeaningMotor overheating insufficient cooling overload
Typical causesCheck motor cooling allow motor to cool reduce load verify cooling
Solutionshigh
Severity300501 25100
Catalog references
System Information
SINUMERIK 840D sl300502
Utilities
Troubleshooting Steps
Other alarms
Other SINUMERIK 840D sl Alarms
22050 – Channel not ready
NC channel failed to initialize or is in error state
22051 – Channel initialization error
Channel failed to initialize during startup
22052 – Channel mode error
Channel mode conflict or invalid mode
25000 – Emergency stop active
Emergency stop button pressed or safety circuit activated
25050 – Axis hardware fault
Axis drive or motor detected a hardware fault condition
FAQ
Common questions
Motor damaged?
Check motor condition after cooling. Test before restart.
Community
Discussion & Experiences
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