Description
Introduction
The ABB HCC/S2.1.2.1 Heating/Cooling Circuit Controller (Product ID: 2CDG110219R0011) is a modular DIN-rail component (MDRC) designed for the control of heating or cooling circuits within KNX building automation systems. Operating over KNX TP, the controller features 2 channels equipped with continuous 0…10 V analog outputs to manage mixing valves alongside 5 A relay outputs for direct circuit pump switching. This device is part of our KNX AC Controller products range.

Integrated controller intelligence utilizes measured flow and return flow temperatures to calculate precise valve outputs while receiving set point temperatures directly from the KNX bus. System integrators benefit from manual operation capabilities, support for double pump system setups by bundling both channels, and full compatibility with the ABB i-bus Tool for commissioning and diagnostics.
Key Features
- 2-fold heating and cooling circuit controller with continuous 0…10 V analog valve control outputs.
- Integrated 5 A relay switching outputs per channel dedicated to circulation pumps.
- Binary inputs (3 per channel) for monitoring potential-free pump status feedback contacts.
- Built-in control algorithm using flow and return flow temperature measurements.
- Receives temperature set points directly via KNX TP bus system.
- Manual operation functionality and diagnostic support via ABB i-bus Tool.
- IP20 protection degree enclosure designed for MDRC mounting.
Benefits
- Provides continuous 0…10 V analog outputs on 2 channels for precise mixing valve position control.
- Includes dedicated 5 A relay outputs to directly switch heating or cooling circulation pumps.
- Supports channel bundling to easily accommodate double pump system configurations.
- Features integrated valve protection functions to maintain long-term component reliability.
- Allows direct local manual operation for operational checks and manual adjustments.
Technical Specifications
Applications
- Precision temperature control of hydronic heating and cooling circuits in KNX automation networks.
- Mixing valve regulation and pump control in single or double pump circulation loops.
Installation Notes
- Install as a modular DIN-rail component (MDRC) inside a protective enclosure ensuring an IP20 rating.
- Wire 0…10 V mixing valve actuators and 5 A pump supply connections to the designated output terminals.
- Connect potential-free pump status contacts to the binary inputs for feedback monitoring.
Developer Resources
- Instructions and Manuals Reference: 2CDG941187P0003
- Declaration of Conformity CE: 2CDK508231D2701
- ETIM 9 Classification: EC001586 – Heating actuator for bus system
FAQ
What bus system is the ABB HCC/S2.1.2.1 designed for?
The controller is compatible with KNX (TP) bus systems. Explore more ABB automation devices for professional building automation projects.
How many outputs does the device feature?
The device features 4 total outputs, consisting of 0…10 V analog valve outputs and 5 A relay pump outputs across its 2 channels. For certificates and current technical files, refer to the official ABB documentation.
Can the HCC/S2.1.2.1 be used with double pump systems?
Yes, by bundling both channels of the device, it can be used for double pump systems.
What is the IP protection rating for this unit?
The ABB HCC/S2.1.2.1 carries an IP20 degree of protection.
What is the exact product model?
The order/model code for this page is HCC/S2.1.2.1. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by ABB.
Conclusion
The ABB HCC/S2.1.2.1 Heating/Cooling Circuit Controller delivers a complete 2-channel solution for hydronic circuit regulation, combining 0…10 V mixing valve control with 5 A pump switching on the KNX TP bus. Installers and system integrators can review our become a KNX dealer options.
With support for manual operation, double pump setups, valve protection, and the ABB i-bus Tool, it provides integrators with reliable control for heating and cooling applications.








Reviews
There are no reviews yet.