Operating instructions

Interfaces, Displays and Operator Controls
Industrial Ethernet OSM/ESM
50
C79000-Z8976-C068-04
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 two display mode LEDs on the OSM/ESM.
Depending on the status of the two display 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
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.
Fault Mask
With the line 1 or 2 LEDs, the fault mask
indicates whether the power supplies are
monitored with the signaling contact.
L1 or L2 LED
- Lit green; in other words the corresponding
power supply (line 1 or line 2) is monitored.
If the power supply falls below 14 V, the
signaling contact responds.
- Not lit, in other words the corresponding
power supply (line 1 or line 2) in not
monitored. If the power supply falls below
14 V this does not trigger the signaling
contact.
The fault mask can be set again with the
button on the front panel of the OSM/ESM
(see 4.2.4.2)
The "Select/Set" button on the front panel of the OSM/ESM changes the display mode
of the display LEDs. Using this button, a new status can be programmed for the fault
mask (see 4.2.4.2)
LED off
L
ED off
LED off
LED
on
LED on LED on
Display
LED on
L
ED off