What is indicated by the status lights SVON1 and SVON2 on the emergency stop board?

The status lights SVON1 and SVON2 on the emergency stop board provide crucial information about the operational state of the servo system. When both lights are illuminated, it indicates that both emergency stop (e-stop) chains are satisfied, which means that all safety conditions have been met and there are no active faults in the emergency stop circuitry. This condition allows the servo amplifier to energize, signifying that the system is ready for operation.

The specific illumination of these status lights reflects that the safety mechanisms are functioning correctly, thereby allowing for safe machine operation when the appropriate conditions are present. Understanding this aspect is vital for programming and operating FANUC systems, as it ties directly to the safety protocols in industrial automation environments.