CU305 Control Units
7.5 Meaning of LEDs
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
157
There are four LEDs on the front panel of the CU305 housing.
Status of the fieldbus communication
OUT>5V Encoder current supply > 5 V (TTL/HTL)
Operating mode (reserved)
The various LEDs are switched on and off as the Control Unit is powered up (depending on
the phase that the system is currently in). When switched on, the color of the LEDs shows
the status of the corresponding power-up phase (see Reaction of the LEDs during power up
(Page 158)).
In the event of a fault, power up will be ended in the corresponding phase. The LEDs that
are switched on retain their color at this particular instant in time, so that the fault can be
determined based on the combination of LEDs that are switched on (bright) and switched off
(dark).
Once the CU305 has booted correctly, all the LEDs are switched off briefly.
The system is ready to operate when the "RDY" LED lights up green permanently.
All the LEDs are controlled by the software loaded during operation (see Behavior of the
LEDs in the operating state (Page 159)).
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