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ABB i-bus® KNX
Heating, Ventilation and Air Conditioning

Boiler/Chiller Interface, 1-fold, MDRC
As interface between the KNX system and a heat generator or chiller. Via an analog output
(0…10 V) the set point or set point adjustment temperature can be transmitted to the heat
generator/chiller. The set point itself is received via KNX. Via two binary inputs the device
can monitor the status of the heat generator/chiller (via potential free contacts) and send it
on the KNX bus. A relay output (5 A) is included to switch or enable/disable the heat genera-
BCI/S 1.1.1 tor/chiller. With an additional relay output (5 A) the pump of the heat generator/chiller can be
switched on and off. Via 3 binary inputs it is possible to monitor the status of the pump (via
potential free contacts) and integrate these feedback into the control of the pump.
The device supports the ABB i-bus® Tool for advanced diagnosis and improved commission-
ing.

Description Mod. Order details Price Weight Pack
width 1 piece 1 piece unit

Type code Order code kg pc.
6 BCI/S 1.1.1 2CDG110222R0011 0.21 1

Building Automation Controller, KNX, MDRC
Powerful freely programmable KNX Building Automation Controller with flexible expandable
In- and Output Modules.
Automation programs based on the globally standardized IEC 61131 programming languages
can be executed. Both the graphical and textual programming languages are supported.
The programming software ABB Automation Builder based on the established Codesys soft-
ware enables the easy creation and reuse of automation programs as well as the integration
BAC/S 1.5.1
of software libraries. The ABB Automation Builder is integrated with the ETS through an
ETS app.
Up to 1000 KNX group objects can be used in the automation program. The KNX relevant
settings such as physical address, linking of the controller group objects with group ad-
dresses and the KNX sending conditions are set in the ETS and can also be changed at any
time without ABB Automation Builder.
The building automation controller has two Ethernet network interfaces. The use is flexible 14
adjustable. In addition to KNXnet/IP communication, these can also be used for other proto-
cols and functions. Among other things, for Modbus TCP and a web server with a freely cus-
tomizable web interface for display and operation of the system.
The controller has a built-in display, an RS-232/485 interface for i. a. Modbus. The internal
clock and data variables can be buffered by a battery. The internal memory of 8 MB can be
extended by the memory card slot.

Description Mod. Order details Price Weight Pack
width 1 piece 1 piece unit

Type code Order code kg pc.
– BAC/S 1.5.1 2CDG120062R0011 0.3 1