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BC9191 | Building automation Room Controller

The BC9191 Room Controller covers the standard functions for the individual room control in a compact design. There are two switched Ethernet interfaces in addition to the necessary I/O signals. A sub-bus is provided for the efficient connection of room control units. The K-bus interface makes extension by the entire range of Bus Terminals possible at any time. The likewise integrated Bus Terminal Controller provides the local intelligence required in order to control the room.



PLC dataEthernet TCP/IP | BC9191
Programming with TwinCAT via Ethernet
Program memory 48 kbytes
Data memory 32 kbytes
Remanent data 2 kbytes
Runtime system 1 PLC task
Programming languages IEC 61131-3 (IL, LD, FBD, SFC, ST)
Online change yes


Technical dataBC9191
Number of Bus Terminals 64
Max. number of bytes fieldbus 512 byte input and 512 byte output
Ethernet interface 2 x RJ 45 (switched)
Protocol TwinCAT ADS, Modbus TCP
Digital inputs 3 contacts (e.g. window contact, dew point, occupancy sensor)
Analog inputs 3 x 0…10 V (e.g. CO2 sensor, air quality sensor, brightness sensor)
1 x Pt/Ni1000 (-20…+60 °C) for air temperature measurement
1 x resistance measurement for set value specification (0…10 KΩ)
Digital outputs 1 x 230 V AC, 10 A, relay (e.g. air heater)
3 x 230 V AC, 1 A, relay (3-stage fan)
2 x 230 V AC, 1 A, triac (e.g. valves for heating and cooling)
Analog outputs 2 x 0…10 V (e.g. volumetric air flow controller)
Bus interface 2 x RJ 45 (switched)
Sub bus system Connection to KL6583 (EnOcean)
Supply voltage 230 V AC
Current supply K-bus 200 mA
Dimensions (W x H x D) 118 mm (127 mm with end cap and DIN rail mounting) x 100 mm x 70 mm
Weight approx. 345 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Protect. class/installation pos. IP 20/vertical
Approvals CE


KS2000 configuration software for extended parameterisation
TwinCAT PLC programming system conforms to IEC 61131-3
Cordsets cordsets and connectors
FC90xx-00xx PC Fieldbus Cards with PCI interface
KL6583 EnOcean transmitter and receiver


Ethernet TCP/IP For further Ethernet TCP/IP products please see the system overview