Siemens SINAMICS S120 Manual page 271

LED Color
OPT –
(OPTION)
Green
Red
RDY and Red
COM
RDY and Orange
OPT
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A
State
Off The electronics power supply is missing or out-
side the permissible tolerance range.
Component is not ready.
Option board not installed or no associated drive
object has been created.
Steady light Option board is ready.
Flashing Depends on the option board used.
0.5 Hz
Flashing At least one fault is present in this component.
2 Hz
Option board not ready (e.g. after switch-on).
Flashing Bus fault – communication has been interrupted
2 Hz
Flashing Firmware update in progress for connected Op-
0.5 Hz tion
Board CBE20
8.3 LEDs on the CU320-2 PN Control Unit
Description, cause
Diagnostics
Remedy
Check power supply and/or
component
–
–
Remedy and acknowledge
fault
Correct the fault
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