Specifications

Configuration / project engineering
6.5 LED display
SCALANCE X-400 BA
116 Operating Instructions, 03/2009, C79000-G8976-C186-07
Display in display mode D
In display mode D, both the D1 and D2 LEDs of the CPU module are on. This mode
indicates whether the power supply is being monitored with the signaling contact.
Figure 6-8 LED display of the power module and the CPU module in DMode D
The following table shows the meaning of the three light emitting diodes on the power
module in display mode D:
Label Color Status Meaning
F off No problem has been detected by the IE Switch X-400.
Red on The IE Switch X-400 detects a fault. The signaling contact
opens.
L1 off Power supply L1 is not monitored. If L1 falls below 17 V, the
signaling contact does not respond.
Green on Power supply L1 is monitored. If L1 falls below 17 V, the
signaling contact responds.
L2 off Power supply L2 is not monitored. If L2 falls below 17 V, the
signaling contact does not respond.
Green on Power supply L2 is monitored. If L2 falls below 17 V, the
signaling contact responds.
6.5.4 LED display - CPU module
CPU module
On the SCALANCE X414-3E, the LEDs of the CPU module are on slot 4;
on the SCALANCE X408-2, they are on slot 3.