ABB BCI/S1.1.1 KNX Boiler / Chiller Interface (2CDG110222R0011)

Description

Introduction

The ABB BCI/S1.1.1 (Product ID: 2CDG110222R0011) is a specialized DIN-Rail mounted Modular DIN-Rail Component (MDRC) designed to establish a direct interface between a KNX TP bus system and primary HVAC plant equipment, such as a heat generator or chiller. Operating within the KNX AC Controller category, this unit facilitates seamless transmission of set point adjustments and operational feedback between building management networks and thermal plant hardware.

Featuring 5 binary input channels and 3 output channels, the device combines analog signal control with robust switching relays. The ABB BCI/S1.1.1 processes incoming set point commands from the KNX bus and converts them into an analog output signal, while simultaneously managing equipment status, pump enabling, and potential-free feedback monitoring without requiring manual unit operation.

Key Features

• Purpose-built interface for KNX TP (twisted pair) bus systems.
• 1 Analog output channel (0…10V) for HVAC set point transmission.
• 2 Integrated relay outputs rated at 5A (1 for main plant enable, 1 for pump control).
• 5 Binary input channels for monitoring status via potential-free contacts.
• DIN-Rail (MDRC) installation format with IP20 degree of protection.
• Full compatibility with the software-based ABB i-bus Tool for advanced diagnostics.
• Zero battery requirement and non-C-load output rating.

Benefits

• Delivers accurate set point or set point adjustment temperature signaling to chillers and heat generators via a 0…10V analog output.
• Provides dedicated operational control using a 5A relay output to switch or enable/disable the primary heat generator or chiller.
• Includes a second 5A relay output specifically rated for switching the associated circulation pump on and off.
• Enables comprehensive system monitoring using 5 binary inputs designed for potential-free status contacts across the plant and pump circuits.
• Improves operational oversight by integrating 3 pump-specific binary status inputs into the circulation pump control logic.
• Accelerates system commissioning and diagnostic routines through support for the ABB i-bus Tool.

Technical Specifications

Specification	Value
Extended Product Type:	BCI/S1.1.1
Product ID:	2CDG110222R0011
Instructions and Manuals:	2CDC508243D0211
Number of Input Channels:	5
Number of Output Channels:	3
Manual Operation:	No
Suitable for C-Load:	No
Number of Batteries:	0
Declaration of Conformity – CE:	2CDK508252D2701
EAN:	4016779011655
Catalog Description:	BCI/S1.1.1 Boiler/Chiller Interface, 1-fold, MDRC
Long Description:	As interface between the KNX system and a heat generator or chiller. Via an analog output (0…10V) 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 (5A) is included to switch or enable/disable the heat generator/chiller. With an additional relay output (5A) 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 commissioning.
Compatible Bus Systems:	KNX (TP)
Product Range:	KNX
Degree of Protection:	IP20
ETIM 9:	EC001584 – I/O device for bus system
WEEE B2C / B2B:	Business To Consumer
Environmental Degree of Protection	IP20
Degree of Protection	IP20
Mounting Type:	DIN-Rail
Installation Instructions and Manuals	2CDC508243D0211 Mounting Type: DIN-Rail
Instructions and Manuals	2CDC508243D0211 Mounting Type: DIN-Rail
Data Sheet, Technical Information:	2CDC508254D0211
Current Type:	DC
Rated Operational Voltage:	230 V AC

Applications

• Interfacing KNX TP automation networks directly with heat generators or chillers in commercial and residential facilities.
• Automating HVAC circulation pump activation and feedback monitoring alongside primary plant set point control.

Installation Notes

• Mount the unit on a standard DIN-rail within a suitable enclosure offering at least IP20 protection.
• Wire potential-free contacts to the binary inputs and connect the 0…10V analog and 5A relay outputs strictly according to ABB instruction manual 2CDC508243D0211.

Developer Resources

• Official Instructions and Manuals document: 2CDC508243D0211.
• Declaration of Conformity – CE reference: 2CDK508252D2701.
• Compatible with ABB i-bus Tool for advanced parameterization, status checking, and commissioning support.

FAQ

What type of analog signal does the ABB BCI/S1.1.1 generate?

The unit provides a 0…10V analog output channel used to transmit set point or set point adjustment temperatures to a heat generator or chiller. Explore more ABB KNX solutions for professional building automation projects.

How many input and output channels are available on this interface?

The ABB BCI/S1.1.1 features 5 binary input channels and 3 output channels (one 0…10V analog output and two 5A relay outputs). For certificates and current technical files, refer to the official product documentation.

Can the ABB BCI/S1.1.1 relay outputs handle C-Load applications?

No, the output relays are not suitable for C-Load.

Does the unit support manual operation on the front panel?

No, the device does not feature manual operation controls.

What is the exact product model?

The order/model code for this page is BCI/S1.1.1. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by ABB.

Conclusion

The ABB BCI/S1.1.1 (2CDG110222R0011) provides a compact, reliable interface for bridging KNX TP networks with boilers, chillers, and associated pump logic. By combining a 0…10V analog output, dual 5A relay channels, and 5 potential-free status inputs into a single IP20 DIN-Rail device, it offers complete system integration backed by the diagnostics of the ABB i-bus Tool. Installers and system integrators can review our KNX dealer program options.