Siemens X-400 - Manual (Page 109)

Installation and Commissioning
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
109
6.8.3 LED Display - Power Module
Display Modes A through C
In display modes A through C, the two LEDs DM1 and DM2 of the Switch CPU are
lit as described in section 6.8.2. In these three states, the status of the signaling
contact and the presence of the supply voltages are displayed by the LEDs of the
power module.
F
L 1
L 2
P o w e r M o d u l e L E D s
R M
S T B Y
D M 1
D M 2
C P U - L E D s P o r t - L E D s
P 1
P 2
D I - L E D s
I N 1 / I N 5
I N 2 / I N 6
I N 3 / I N 7
I N 4 / I N 8
Figure 6-25 Example of the LED display of the power module and the Switch CPU in
DMode A
The following table lists the significance of the three LEDs on the power module for
display modes A through C:
Label Color Status Meaning
F off The SCALANCE X414-3E has not detected
any faults, the signaling contact is closed.
Red on The SCALANCE X414-3E has detected a
fault, the signaling contact opens.
L1 off Power supply L1 lower than 17 V.
Green on Power supply L1 higher than 17 V.
L2 off Power supply L2 lower than 17 V.
Green on Power supply L2 higher than 17 V.