Power unit: Internal software error

What does F30850 mean?

An unhandled internal software error has occurred within the power unit. The fault value (r0949) is intended for internal Siemens troubleshooting only. This indicates a critical software malfunction that prevents proper operation. The primary risk is complete drive failure and inability to operate the equipment.

• Corrupted firmware within the power unit due to power fluctuations, electromagnetic interference, or an incomplete/improper upgrade.
• Internal hardware malfunction (e.g., processor, memory module, communication bus) within the power unit.
• Communication error between internal modules or a specific internal component failure.
• A specific, rare sequence of operations or unusual operating conditions triggering a previously undetected software bug.

Click steps to track your progress.

1. 1

   Record the fault value r0949 (hexadecimal) for detailed diagnostic purposes for Siemens technical support.

2. 2

   Perform a complete power cycle of the drive (disconnecting and reconnecting main power) to clear volatile memory.

3. 3

   Verify the firmware version of the drive and consider upgrading to the latest stable version if available and applicable.

4. 4

   Reset drive parameters to factory defaults (P0010=30, P0970=1) and then carefully reconfigure essential operational parameters.

5. 5

   If the fault persists after firmware update and parameter reset, replacement of the power unit may be necessary.