Siemens CU240B-2 - Operating States Indicated on Leds

Alarms, faults and system messages
9.1 Operating states indicated on LEDs
Converter with the CU240B-2 and CU240E-2 Control Units
402 Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
9.1
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 9- 1 Inverter diagnostics
LED
Explanation
RDY
BF
GREEN - on
Not relevant
There is presently no fault
GREEN - slow
Commissioning or reset to factory settings
RED - on YELLOW - variable
frequency
Firmware update in progress
RED - slow RED - slow Inverter waits until the power supply is switched off
and switched on again after a firmware update
RED - fast
Not relevant
There is presently a fault
RED - fast RED - fast Incorrect memory card or unsuccessful firmware
update
Table 9- 2 Diagnostics of the safety functions
SAFE LED
Meaning
YELLOW - on
One or more safety functions are enabled, but not active.
YELLOW - slow One or more safety functions are active; no safety function faults have oc-
curred.
YELLOW - rapid The converter has detected a safety function fault and initiated a STOP
response.
Table 9- 3 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.