Troubleshooting steps
high
SINUMERIK 840D sl
30091 – Drive STO fault
Drive Safe Torque Off activated
Details
alarm
Error typeDrive fault
MeaningDrive fault safety circuit activated
Typical causesCheck drive safety circuit verify safety conditions
Solutionshigh
Severity30000
Catalog references
System Information
SINUMERIK 840D sl30091
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
What is 30091?
Drive alarm 30091 indicates drive sto fault. Check drive safety diagnostics.
Community
Discussion & Experiences
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