ROTRONIC CF3-W-EU User Manual
Dokument
IMA 201
Rev 2 Page
1 (4)
Press here to open.
Installation manual
CF3-W-EU, CF3-W-EU-Disp
CO2 transmitter
CF3-W-EU CF3-W-EU - Disp
General
The IAQ-sensor product CF3-W-EU (sensor for wall mounting) is designed to
measure carbon dioxide (CO2) in rooms. Option - TR is prepared for temperature
measurements by the resistive temperature probe mounted by the user. The
temperature probe is potential free (floating). Option - Disp displays the measured
CO2 value in ppm (parts-per-million) on the LCD.
The units are designed for connecting to Direct Digital Control (DDC) with 0-10V or
2-10V signal inputs. The two parallel signal outputs OUT1 (0-10V) and OUT2 (2-10V
or 4-20 mA) give linear signal voltages or currents corresponding to the measuring
range.
The output OUT2 also indicates the status by setting the output voltage to 1V or the
output current to 2 mA when the sensor self-diagnostics detects any error.
To open the wall mounted housing
Figure 1. Closed housing seen from
above. The housing is opened by
pressing a screw driver on the locking
hook. The locking hook is then
released.
Dokument
IMA 201
Rev 2 Page
2 (4)
Terminal
Function
Electrical data
Remarks
Remarks
this sensor
Power (+)
ground (-)
24 VAC/DC+
reference
Out(1)
Analogue
0-10 VDC
0 VDC or 0mA
0-2000 ppm CO2
Status = NOT READY
~
~
Option display
+
~
Electrical connections
The power supply has to be connected to and . is considered as system
ground. The same ground reference has to be used for the CF3-W-EU unit and for the
DDC/signal receiver.
PLEASE NOTE!
The same ground refere nce has to be used for the CF3-W-
EU
unit and for the control s ystem!
Out(2)
Power
output 1 (+)
Analogue
output 2 (+)
Table I. Connections of the main terminal of CF3-W-EU
(+-20%), 2W
24 VAC/DC-
2,0-10,0 VDC or
4,0-20,0 mA
0,9-1,6 VDC or
1.5-2,5 mA
Standard settings
System voltage
0-2000 ppm CO
2
Status = ERROR
Settings of
Figure 2. PCB with jumper to configure OUT2 for current output 4-20mA or voltage output 210VDC
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