Basic principles
BK11x0, BK1250 29Version: 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
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