Troubleshooting steps
high
SINUMERIK 840D sl
25052 – Axis encoder fault
Axis encoder error detected
Details
alarm
Error typeEncoder fault
MeaningEncoder fault cable fault
Typical causesCheck encoder connections verify encoder test cable
Solutionshigh
Severity25050 25051
Catalog references
System Information
SINUMERIK 840D sl25052
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
How to test?
Use encoder diagnostics to verify signal quality
Community
Discussion & Experiences
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