6
05/2018 Subject to technical changes..
domat US100
Connection
Connection of power, communication, motors, and valve. Suitable cable types for low
-voltage installations are LAM DATAPAR 2x0.8 (cross-section in mm
2
), JYTY 2x1
(diameter in mm) etc. If communication and power are in the same cable, use 4-core
LAM DATAPAR 2x2x0.8, JYTY 4x1. Up to 100-120 meters, parallel lines of 24 V and data
bus are no problem. Regarding to EMC it is better if the pairs are twisted, such as with
the LAM DATAPAR or Belden 8205 cable.
A terminal is designed for maximum 3 wires of 0.8 mm
2
. With cable types as above,
maximum (starting) power of the controller and valve of ca. 7 VA and acceptable
voltage drop of max. 15 %, the maximum cable length for 10 controllers is about 50 m.
If the controllers and valves are at higher distance than 50 m from the transformer or
more valves are connected to the transformer (max. 2 valves per controller), it is more
suitable to supply the controllers locally. The RS485 bus is galvanically separated and
connects all controllers, regardless of the way they are powered.
Temperature
compensation
After switching the unit on, allow about 90 mins to dissipate the heat inside of the
housing. Then the sensor is measuring correctly. Do not change the sensor correction
variable immediately after powering the device on!
1
2
3
4
5
6
7
8
9
24 V ~
US100
RS 485
G0
IN2
IN1
NO1
NC1
COM1
NO2
NC2
COM2
ME200
