2
05/2018 Subject to technical changes..
domat US100
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.
The communication bus is Modbus RTU over RS485, therefore the controllers are
easily to integrate into any SCADA or BMS system.
Technical data
Power
24 V AC +/- 10%
Consumption
1,5 W + peripherials (ca. 5VA)
Measuring range
-
20 ÷ 50 °C
Protection
IP20
Sensor accuracy
according to DIN IEC 751, Class B
Output - heating
1x solid state relay, zero switching, for AC load, 24 V AC
against G0, max. switching current 0,4A; recommended
thermic actuators are Siemens STA71, Danfoss TWA (24V
types) etc.
Outputs - sunblinds
2x solid state relay, zero switching, for AC load, 24 V AC
against G0, max. switching current 0,4A
Input
24 V AC, 7.5 mA
Setpoint correction
according to configuration, +/- 10 to +/- 1 K
Communication
2 wire RS485 - Modbus RTU, slave, optically separated,
1200...115200 bps, bus end switches
Display
LCD 60 x 60 mm
Terminals
screw terminals for 0,14
–
1,5 mm
2
wires
Cover
ABS, similar to RAL9010,
Weight
0,13 kg
Dimensions
see below
