Siemens SINAMICS G120 - Operating States Indicated on Leds

Alarms, faults and system messages
11.1 Operating states indicated on LEDs
Inverter with CU230P-2 Control Units
356 Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
11.1
Operating states indicated on LEDs
The LED RDY (Ready) is temporarily orange after the power supply voltage is switched-on.
As soon as the color of the LED RDY changes to either red or green, the LEDs signal the
inverter state.
Signal states of the LED
In addition to the signal states "on" and "off" there are two different flashing frequencies:
Table 11- 1 Inverter diagnostics
LED
Explanation
RDY
BF
GREEN - on
---
There is presently no fault
GREEN - slow
---
Commissioning or reset to factory settings
GREEN - fast
---
Inverter writes data to the memory card
RED - slow --- Inverter waits until the power supply is switched off
and switched on again after a firmware update
RED - fast
---
There is presently a fault
RED - fast RED - fast Incorrect memory card or unsuccessful firmware
update
Table 11- 2 Communication diagnostics via PROFINET
LNK LED
Explanation
GREEN - on
The communication via PROFINET is in order.
GREEN - slow
Device naming is active.
Off
No communication via PROFINET.
Table 11- 3 Communication diagnostics via RS485
LED BF
Explanation
On
Receive process data
RED - slow
Bus active - no process data
RED - fast
No bus activity
YELLOW - variable
frequency
Firmware update in progress