Siemens SINAMICS S120 Manual page 312

Diagnostics
8.2 LEDs on the CU320-2 DP Control Unit
LED Color
Red
OPT –
(OPTION)
Green
Red
RDY and Red
COM
RDY and Orange
OPT
Any individual response of the LED OPT is described for the respective Option Board.
1)
310
State Description, cause
Flashing PROFIBUS master is sending wrong parameteri-
light zation/configuration data
0.5 Hz
Flashing Cyclic bus communication has been interrupted
light or could not be established
2 Hz
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 Option board is ready.
light
Flashing Depends on the option board used
light
0.5 Hz
Continuous Depends on the option board used
light
Flashing Depends on the option board used
light
0.5 Hz
Flashing At least one fault is present in this component.
light Option board not ready (e.g. after switching on).
2 Hz
Flashing Bus fault - communication has been interrupted
light
2 Hz
Flashing The firmware of the connected option board is
light being updated.
0.5 Hz
Remedy
Adapt configuration between
master/controller and CU
Correct the fault
Check power supply and/or
component
–
. –
1)
. –
1)
. –
1)
Remedy and acknowledge
fault
Correct the fault
–
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A