General
Other bus systems	Other
Mounting method	Other
Width in number of modular spacings	8
Number of outputs	4
Switching voltage	10
Degree of protection (IP)	IP20
Number of digital inputs	10
Bus system KNX
Bus system KNX radio
Bus system radio frequent
Bus system LON
Bus system Powernet
Radio frequent bidirectional
Bus connection included
Bus module detachable
Correcting variable consistent
Correcting variable switching
Valve protection function
Manual switch

For controlling a heating or cooling circuit. The device has 2 channels, each with an analog output for controlling the 3-way mixer valve (0.10 V) of a heating or cooling circuit. The device also has a relay output (5 A) for switching the circulation pump. The status of the pump can be monitored via 3 binary signal inputs (via potential-free contacts) and this feedback can be included in the control of the pump. The flow and return temperatures are measured and used to calculate the valve control value by the integrated controller. The setpoint is received via the KNX bus. By bundling channels, it is possible to control systems with double pumps.
The HCC/S 2.1.2.1 has an easy-to-use local control. The ABB i-bus tool can be used for extended diagnostic functions and improved commissioning.