F9002

Error internal RTOS function call

Indramat · Indradrive

What does F9002 mean?

This fatal error indicates a failure within the Real-Time Operating System (RTOS) kernel of the IndraDrive. An RTOS function call returning an error points to a critical issue in task scheduling, memory management, or inter-process communication, which is essential for the drive's real-time performance and control.

Common Causes

  • RTOS kernel corruption or instability.
  • Resource contention or deadlock within the RTOS.
  • Hardware issues affecting the memory or processor used by the RTOS.
  • Severe electromagnetic interference causing RTOS instability.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Power cycle the IndraDrive controller.

  2. 2

    Check the drive's internal diagnostics or event log for specific RTOS-related messages.

  3. 3

    Ensure the firmware is the latest stable version, as RTOS issues are often addressed in updates.

  4. 4

    Verify system grounding and shielding to rule out external electrical disturbances.

  5. 5

    If the problem persists, the control unit of the IndraDrive may be defective and require replacement.

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Verified technical data. Last updated: March 2026

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