Cause : Real Time Operating System Overrun Warning comes when a time slice overflow was identified within the inverter's RTOS. This means the inverter's internal software encountered an issue.

A0600 is an error code for a Siemens Micromaster 420 indicating a Real-Time Operating System (RTOS) data loss alarm. This is a software error within the inverter itself.

Diagnosis and Repair:

1. Reduce communication baud rate: If you're using the Universal Serial Synchronous (USS) communication protocol, try lowering the baud rate to reduce data traffic. This can be adjusted through the inverter settings.
2. Deactivate unnecessary inverter functions: Review the currently active inverter functions and deactivate any that aren't essential for your application.