Power supply unit terminal for the K-bus  KL9400
Power LED (K-bus)
Power LED
Power contact
Power contact
Power contact
+24 V
Infeed 24 V
Infeed 0 V
Infeed PE
0 V
Top view 
Contact assembly 
extended temperature range

KL9400 | Power supply unit terminal for the K-bus

The KL9400 power supply unit terminal is used to refresh the K-bus. Data is exchanged between the Bus Coupler and Bus Terminal over the K-bus. Each Bus Terminal draws a certain amount of current from the K-bus (see “Current consumption K-bus” in the technical data). This current is fed into the K-bus by the relevant Bus Coupler’s power supply unit. The standard couplers (BKxx00, BCxx00) make 1.75 A available to the K-bus. In configurations with a large number of Bus Terminals it is possible to use the KL9400 in order to supply an extra 2 A to the K-bus.

Technical data KL9400 | KS9400
Input voltage 24 V DC (-15 %/+20 %)
Output voltage 5 V DC
Output current 2 A for K-bus supply
Current consumption K-bus
Power contacts max. 24 V DC/max. 10 A
Short-circuit proof yes
Electrical isolation
Residual ripple
Weight approx. 65 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Pluggable wiring for all KSxxxx Bus Terminals
Approvals/markings CE, UL, ATEX, GL
Ex marking II 3 G Ex nA IIC T4 Gc