Siemens CU240S DP-F - LED Overview; Functions

Service and maintenance
7.3 LED Overview
Control Units CU240S
7-4 Operating Instructions, 11/2006, A5E00766042B AA
7.3 LED Overview
Status display via LEDs
The SINAMICS G120 inverters provide multiple functions and operating states which are
indicated via LEDs.
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Figure 7-1 State LEDs on the CU240S, CU240S DP, CU240S DP-F
Colours
The colours of the LEDs are self explanatory. The Status of the inverter is displayed by the
following different LED colours and states:
State Meaning Color
on off Temporary state
(flashing 0.5 Hz)
Fault indication LEDs
• SF
• BF
Red
Ready LED
• RDY
Green
Fail-safe LEDs
• ES
• STO, SS1, SLS
Yellow
If for a certain state it is indifferent whether the LED is ON, OFF or flashing it is mentioned as
"not relevant".