Siemens OSM Instructions d'exploitation télécharger pdf (Page 60)

Interfaces, Displays and Operator Controls

Industrial Ethernet OSM/ESM

C79000-Z8976-C068-10

4.2.2 LED "Power"

The display mode of the "Power" LED can be switched over by briefly pressing the

"Select/Set" button on the front panel of the OSM/ESM. The valid display mode is

indicated by the display mode LEDs on the OSM/ESM.

Depending on the status of the display mode LEDs, the "Power" LED has the two

following display modes:

Display mode Meaning

Status of the power supplies

In the following states of the

display mode

LEDs

, the

Power LEDs

indicate the current

status of the two voltages of the OSM/ESM:

Display Mode

Note

LED 3 exists only on devices with digital

inputs.

Power LED L1 or L2

- Lit green; in other words, power supply 1

or 2 (line 1 or line 2) is applied.

Not lit; in other words power supply 1 or 2

(line 1 or line 2) is less than 14 V.

LED off LED off

LED off

LED off LED on

LED off

LED on LED off

LED off

LED off LED off

LED on

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Siemens OSM Instructions d'exploitation Page 60