Basic principles
BK11x0, BK1250
29
Version: 4.1
Fig. 20: Diagnostic LEDs at Bus Coupler BK1150
The diagnostic LEDs for the BK1250 are arranged as shown in Fig.
Diagnostic LEDs at Bus Coupler
BK1250
.
Fig. 21: Diagnostic LEDs at Bus Coupler BK1250
LEDs for power supply diagnostics
LED
Display
State
Description
POWER
SUPPLY
green off
-
No operating voltage present at the Bus Coupler
on
-
24 V
DC
operating voltage present at the Bus Coupler
POWER
CONTACTS
green off
-
No power supply present at the power contacts
on
-
24 V
DC
power supply present at the power contacts
