What causes KUKA Robot alarm KRC0390?

User attempted to delete files in protected system directories (e.g., /KRC, /System, /Kernel folders). File deletion command issued with insufficient user access privileges or incorrect permission level. Automation script or program attempting to remove system configuration files. Corrupted file manager operation sending delete commands to protected file locations. Third-party software or external interface attempting unauthorized system file manipulation.

How do I fix KUKA Robot alarm KRC0390?

1. Verify user access level and permissions in the KRC controller - ensure only authorized personnel with appropriate access rights attempt file operations 2. Review the file path and confirm the target file is not a system or kernel file located in protected directories 3. Check if the file deletion was initiated through an automation program or script and audit the code for incorrect file path references 4. Access the system through the teach pendant or KRC HMI with proper administrative credentials if system file management is required 5. Contact KUKA service or system administrator if legitimate system file updates or maintenance are needed - never attempt to force deletion of protected files 6. Restart the KRC controller if the alarm persists after verifying no deletion operations are in progress, and check system logs for additional error details

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0390

KUKA Robot KRC0390 - DELETING OF SYSTEM FILES IS INADMISSIBLE

This alarm indicates that an attempt was made to delete critical system files or protected kernel files through the KRC controller's file management interface. The KRC system prevents deletion of essential operating files to protect controller integrity and prevent system malfunction. This protection mechanism blocks unauthorized or accidental removal of files required for proper robot operation.

KUKA RobotSystemBasic

KRC0390

KUKA Robot KRC0390 - DELETING OF SYSTEM FILES IS INADMISSIBLE

DELETING OF SYSTEM FILES IS INADMISSIBLE

Common Causes

User attempted to delete files in protected system directories (e.g., /KRC, /System, /Kernel folders)
File deletion command issued with insufficient user access privileges or incorrect permission level
Automation script or program attempting to remove system configuration files
Corrupted file manager operation sending delete commands to protected file locations
Third-party software or external interface attempting unauthorized system file manipulation

Troubleshooting Steps

1Verify user access level and permissions in the KRC controller - ensure only authorized personnel with appropriate access rights attempt file operations
2Review the file path and confirm the target file is not a system or kernel file located in protected directories
3Check if the file deletion was initiated through an automation program or script and audit the code for incorrect file path references
4Access the system through the teach pendant or KRC HMI with proper administrative credentials if system file management is required
5Contact KUKA service or system administrator if legitimate system file updates or maintenance are needed - never attempt to force deletion of protected files
6Restart the KRC controller if the alarm persists after verifying no deletion operations are in progress, and check system logs for additional error details

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