Siemens SINAMICS S120 Manual page 355

LED Color
Red
OPT –
(OPTION)
Green
Red
RDY and Red
DP
RDY and Orange
OPT
Cabinet Modules
Manual, 03/2013, A5E03263538A
State
Flashing Bus error,
light incorrect parameter assignment/configuration
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 lies
outside 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.
light
0.5 Hz
Steady light At least one fault is present in this component.
Option board not ready (e.g. after switch-on).
Flashing Bus error - communication has been interrupted
light
2 Hz
Flashing Firmware update in progress for connected
light Option
0.5 Hz Board CBE20
7.3 LEDs on the CU320-2 PN Control Unit
Description, cause
Diagnostics
Remedy
Adapt configuration between
controller and devices
Remove the fault
Check power supply and/or
component
–
–
Remedy and acknowledge
fault
Remove the fault
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