Siemens SINAMICS S120 Manual page 314

Diagnostics
8.3 LEDs on the CU320-2 PN Control Unit
Behavior of the LEDs after booting
Table 8- 6 Control Unit CU320-2 PN – Description of the LEDs after booting
LED Color
RDY –
(READY)
Green
Red
Red/
green
Orange
Green/
orange
or
red/
orange
COM –
PROFIdrive
cyclic opera-
tion
Green
Red
312
State Description, cause
Off The electronics power supply is missing or out-
side the permissible tolerance range.
Steady light The component is ready for operation and cyclic
DRIVE-CLiQ communication is taking place.
Flashing light Commissioning/reset
0.5 Hz
Flashing light Writing to the memory card
2 Hz
Flashing light PROFIenergy energy saving mode is active
0.5 s on, 3 s
off
Flashing light General errors
2 Hz
Flashing light Control Unit is ready for operation.
0.5 Hz However, there are no software licenses.
Flashing light Updating the firmware of the connected DRIVE-
0.5 Hz CLiQ components
Flashing light DRIVE-CLiQ component firmware update has
2 Hz been completed. Wait for POWER ON of the
respective component.
Flashing light Component recognition via LED is activated.
2 Hz
Remark:
Both options depend on the LED status when
activating p0124[0] = 1.
Off Cyclic communication has not (yet) taken place.
Remark:
PROFIdrive is ready for communication when the
Control Unit is ready (see LED RDY).
Steady light Cyclic communication is taking place.
Flashing light Full cyclic communication has not yet taken
0.5 Hz place.
Possible causes:
The controller is not transferring any set-
•
points.
During isochronous operation, no global con-
•
trol (GC) or a faulty global control (GC) is
transferred by the controller.
"Shared Device" is selected and only one
•
controller connected.
Flashing light Bus error,
0.5 Hz incorrect parameter assignment/configuration
Remedy
Check power supply
–
–
–
–
Check parameterization /
configuration data
Upgrade licenses
–
Carry out POWER ON for
the components in question
–
–
–
–
Adapt configuration be-
tween controller and devic-
es
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A