domat UC120
03/2017 Subject to technical changes.
1
UC120
Communicative heating
controller, 0..10 V output
Summary
UC120 is a communicative room heating controller with one binary input and one
0...10 V DC output for control of a radiator or electrical heater. It can work
autonomously, or in connection to a primary controller (MiniPLC or SoftPLC), or
building management system (RcWare Vision or any SCADA).
Application
▪
Systems with radiators, electric heaters, or floor heating
–
control and
measuring of room temperature
▪
monitoring and communication of room temperatures
Function
The controller reads actual room temperature, setpoint shift by a knob, and set
operation status which is set by short push of the knob. The room temperature is
measured in the range of -20 to +50
°C. Measured and set values are processed in a PI
algorithm, brought to one 0..10 V DC output. All values are displayed on a large LCD
display.
The functionality and control parameters, i.e. P and I constants, and hysteresis, can be
set with
ModComTool
, the configuration software, which is free to download at
http://domat-int.com/en/downloads/software
The controller contains real time clock with a weekly scheduler (6 events per day). It
changes between three operation modes: Day, Night, and Off. A short push in the Night
mode switches to Party mode
–
Comfort extension by 2 hours.
The Change-over function (communicated over the bus) switches to the cooling mode
while cooling setpoints come into effect. This mode is used when heat pumps with
change-over mode are installed. The change-over signal is read from the heat pump
interface or a thermostat at the supply water piping, and is transmitted to the
controllers over MiniPLC, UCWEB, or any Modbus master. See
Room units and
controllers, Communication protocol description
handbook for register addressing and
communication examples.
