Troubleshooting steps
high
SINUMERIK 840D sl
201002 – Control unit closed-loop fault
Control unit closed-loop control fault
Details
alarm
Error typeClosed-loop
MeaningClosed-loop control fault
Typical causesCheck closed-loop control verify parameters
Solutionshigh
Severity201000
Catalog references
System Information
SINUMERIK 840D sl201002
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 closed-loop?
Closed-loop control maintains position/velocity accuracy.
Community
Discussion & Experiences
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