MP-Bus master terminal KL6771
MP-Bus error
Power contact
+24 V
Power contact 0 V
+24 V
0 V
Top view 
Contact assembly 
extended shock and vibration range 25g

KL6771 | MP-Bus master terminal

The MP-Bus master terminal enables direct connection of MP-Bus slave devices. The MP-Bus was developed by Belimo for connecting valves, throttle valves, air valves and fire dampers for window ventilation systems. Up to sixteen field devices, eight drives and eight sensors can be connected to the KL6771. Process data exchange is fieldbus-independent. The Bus Terminal is configured and commissioned via TwinCAT function blocks. Status LEDs directly indicate the bus status. Several KL6771 terminals can be connected to the same Bus Coupler or Bus Terminal Controller.

Technical data KL6771 | KS6771
Technology MP-Bus
Number of channels 1
Data transfer standard MP-Bus
Data transfer channels 1
MP-Bus devices max. 16 (8 drives/8 sensors)
Data transfer rates 1200 baud
Bus access polling
Current consumption K-bus typ. 55 mA
Current consumption power contacts typ. 10 mA + load
Short-circuit proof yes
Electrical isolation 500 V (K-bus/MP-Bus)
Bit width in the process image input/output: 12 bytes
Configuration TwinCAT (function blocks)
Nominal voltage 24 V DC (-15 %/+20 %)
Input voltage 24 V DC (-15 %/+20 %)
Special features 8 drives/sensors; TwinCAT library: TwinCAT PLC MP-Bus
Weight approx. 85 g
Operating/storage temperature 0…+55 °C/-25…+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
Ex marking II 3 G Ex nA IIC T4 Gc
TwinCAT PLC MP-Bus The library is installed free of charge together with TwinCAT from V2.11 Build 2229 (R3 and x64 engineering).
subsystem For further subsystem products please see the system overview.