Siemens SINAMICS G120 Operating Instructions Manual page 393

Low voltage inverters built-in units with cu250s-2 control units and encoder evaluation

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Converter with the CU250S-2 Control Units

Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG

CANopen fieldbus

Data exchange between the inverter and control system is active ("Operational" state)

Fieldbus is in the "Pre-operational" state

Fieldbus is in the "Stopped" state

No fieldbus available

When LED RDY flashes simultaneously:

Firmware update failed

Alarm - limit reached

Error event in the higher-level control system (Error Control Event)

Inverter waits until the power supply is switched off and switched on again after a firmware

Incorrect memory card or unsuccessful firmware update

Firmware update is active

Alarms, faults and system messages

8.1 Operating states indicated on LEDs