Siemens SINAMICS G120 Operating Instructions Manual page 391

Table 8-3
SAFE
Table 8-4
BF
Table 8-5
LNK
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Integrated safety functions
Explanation
One or more safety functions are enabled, but not active.
One or more safety functions are active and error-free.
The inverter has detected a safety function fault and initiated a stop response.
PROFINET and PROFIBUS fieldbuses
Explanation
Data exchange between the inverter and control system is active
Fieldbus interface is not being used
The fieldbus is improperly configured.
RDY In conjunction with a synchronously flashing LED RDY:
Inverter waits until the power supply is switched off and switched on again after a
firmware update
No communication with higher-level controller
RDY In conjunction with an asynchronously flashing LED RDY:
Incorrect memory card
Firmware update failed
Firmware update is active
PROFINET fieldbus
Explanation
Communication via PROFINET is error-free
Device naming is active
No communication via PROFINET
Alarms, faults and system messages
8.1 Operating states indicated on LEDs
389