Siemens SINAMICS S120 Commissioning Manual page 190

Diagnostics
3.1 Diagnostics via LEDs
Control Unit 320-2 PN in operation
Table 3- 7 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
DP –
PROFIdrive
cyclic
operation
Green
188
Status
OFF Electronics power supply is missing or outside
the permissible tolerance range.
Continuous The component is ready for operation and cyclic
light DRIVE-CLiQ communication is taking place.
0.5 Hz Commissioning/reset
flashing
light
2 Hz Writing to the memory card
flashing
light
2 Hz General error
flashing
light
0.5 Hz Control Unit is ready for operation.
flashing However there are no software licenses.
light
0.5 Hz Updating the firmware of the DRIVE-CLiQ
flashing components
light
2 Hz DRIVE-CLiQ component firmware update
flashing complete. Wait for POWER ON for the
light components in question.
2 Hz Component detection via LED is activated
flashing (p0124[0]).
light
Note:
Both options depend on the LED status when
component detection is activated via
p0124[0] = 1.
Off Cyclic communication has not (yet) taken place.
Note:
The PROFIdrive is ready to communicate when
the Control Unit is ready to operate (see LED
RDY).
Continuous Cyclic communication is taking place.
light
0.5 Hz Full cyclic communication has not yet taken
flashing place.
light
Possible causes:
The controller is not transferring any

setpoints.
During isochronous operation, no global

control (GC) or a faulty global control (GC) is
transferred by the controller.
"Shared Device" is selected (p8929=2) and

only one controller connected.
Description, cause
Commissioning Manual, (IH1), 01/2012, 6SL3097-4AF00-0BP2
Remedy
Check power supply
–
–
–
Check
parameterization/configuratio
n data
Obtain licenses
–
Turn POWER ON for the
components in question
–
–
–
–
Commissioning Manual