Siemens SINAMICS S120 Commissioning Manual page 288

Diagnostics
6.1 Diagnostics using LEDs
Control Unit 320-2 PN during run-up
Table 6-6 Control Unit CU320-2 – description of the LEDs during ramp-up
LED Color
RDY Red
COM Orange
OPT Orange
RDY Red
COM Red
RDY Red
COM Red
RDY Red
COM Orange
RDY Red
RDY Red
COM Red
COM Red
RDY Red
COM Red
RDY Orange
286
Display State, description, cause
Continuous light Hardware reset
Continuous light BIOS loaded
Flashing light 2 Hz BIOS error: "An error occurred while loading the BIOS".
Continuous light
Continuous light Loading firmware: RDY LED lights up red, COM LED flashes orange
without fixed frequency.
Flashing light
Continuous light Firmware has been loaded.
Flashing light 2 Hz File error:
•
•
Continuous light Firmware has been checked. No CRC error detected.
Flashing light 0.5 Hz Firmware has been checked. CRC error detected.
Continuous light Initializing firmware
Memory card not available or faulty.
Software on memory card not available or faulty.
Commissioning Manual, 06/2020, 6SL3097-5AA10-0BP2
Commissioning with Startdrive