Siemens SINAMICS S120 - Leds on the CU320-2 PN Control Unit

Diagnostics
7.3 LEDs on the CU320-2 PN Control Unit
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
333
7.3
LEDs on the CU320-2 PN Control Unit
Description of the LED states
The different states during power-up are indicated by the LEDs on the Control Unit.
● The duration of the individual states varies.
● If an error occurs, the power-up is stopped and the LEDs indicate the cause of the error.
● Once the unit has successfully powered up, all the LEDs are switched off briefly.
● After power-up, the LEDs are controlled via the loaded software.
Reaction of the LEDs during power up
Table 7- 4 Load software
LED
Status
Comments
RDY
COM
OPT
Red Orange Orange Reset Hardware reset
RDY LED lights up red, all other LEDs light
up orange
Red
Red
Off
BIOS loaded
–
Red 2 Hz Red Off BIOS error
• Error occurred while loading the BIOS
Red 2 Hz Red 2 Hz Off File error
• Memory card not inserted or faulty
• Software on memory card not present
or corrupted
Red Orange flash-
ing light
Off FW loading RDY LED lights up red, COM LED flashes
orange without fixed frequency
Red
Off
Off
FW loaded
–
Off Red Off FW checked
(no CRC error)
Red 0.5
Hz
Red 0.5 Hz Off FW checked
(CRC error)
• CRC error
Table 7- 5 Firmware
LED
Status
Comments
RDY
COM
OPT
Orange
Off
Off
Initializing
–
Alternating
Running
See the table below