S&P AIRSENS CO2 Manuel D'instructions page 11

The front cover is opened a tool pressing both pressure closures located at both
edges of the cover (see Fig.5).
In case of an installation where cabling is outdoors, it must be installed inside a
cable ducting system with IP4X protection degree classifi ed as "cable ducting with
access cover that can only be opened with a tool" according to UNE-EN 50.085-1:
Cable trunking systems and cabling ducting systems for electrical installations-
Part 1: General requirements.
START UP
Operating modes (see Fig.2)
MF1: Relay + Modbus (reading) – [SW1-4=OFF]
Adjustable relay via P1 potentiometer. Factory settings: 1200 ppm / 70%HR
MF2: 0-10Vdc output analogue signal + Modbus (reading) – [SW1=ON, SW2-4=OFF]
0-10Vdc output analogue signal adjustable via P1 potentiometer. Factory set-
tings: 1200 ppm / 70%HR
MF3: 2-10Vdc output analogue signal + Modbus (reading) – [SW1-2=ON, SW2-4=OFF]
2-10Vdc output analogue signal adjustable via P1 potentiometer. Factory set-
tings: 1200 ppm / 70%HR
MF4: Modbus control – [SW1-3=ON, SW4=OFF]
Access to reading, edition and communication of working parameters via Mod-
bus communication protocol (see Table 1, Modbus registers). Relay and output
analogue signal enabled. Factory settings: 1200 ppm / 70%HR .
On electronic board there are three LEDs (see Fig.1) with the following functions.
The red D17 switched on indicates that the device is receiving power supply. The
red D16 blinking means that Modbus communication is trying to be established,
the green D18 blinking that communication is done successfully.
Note: If other switch combination is chosen, LED diffuser is switched off and
digital/ analogue signals are inoperative.
LED diffuser
The device displays a real-time concentration level. In operation mode 1, the illu-
mination is two-color while in modes 2, 3 and 4 this is three-color. Light intensity
is adjustable via P2 potentiometer (see Fig.1) from OFF to 100%.
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