Siemens SINAMICS S120 Commissioning Manual page 198

Diagnostics
3.1 Diagnostics via LEDs
Table 3- 47 Meaning of the OPT LED on the Control Unit
LED Color
OPT –
Green
Red
Orange
196
Status
OFF Electronics power supply is missing or outside permissible
tolerance range.
Communication Board either defective or not inserted.
Continuous Communication Board is ready and cyclic communication
light is taking place.
Flashing light The Communication Board is ready, but cyclic
0.5 Hz communications is not running.
Possible causes:
At least one fault is present.

Communication is being established.

Continuous Cyclic communication via PROFINET has not yet been
light established. However, non-cyclic communications are
possible. SINAMICS waits for a parameterizing/configuring
telegram
Flashing light The firmware update into the CBE20 has been completed
0.5 Hz with an error.
Possible causes:
The CBE20 is defective.

The memory card for the Control Unit is defective.

In this state CBE20 cannot be used.
Flashing light There is a communications error between the Control Unit
2 Hz and the CBE20.
Possible causes:
Board was withdrawn after booting.

The board is defective

Flashing light Firmware is being updated.
0.5 Hz
Description, cause
Commissioning Manual, (IH1), 01/2011, 6SL3097-4AF00-0BP1
Remedy
–
–
–
–
–
Correctly insert the
board, if required,
replace.
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Commissioning Manual