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KL9400, KS9400 | 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, while the “Economy” Couplers (BKxx10) and the “Low Cost” Couplers (LCxx00) provide 0.5 A. 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 consumpt. K-bus
Power contacts 24 V DC max./10 A max.
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 60068-2-27/29
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 CE, UL, Ex, GL