www.sentera.eu
MIW-FCMFXB-R-EN-000 - 19 / 02 / 2021
6 - 10
FCMFXB-R
INTELLIGENT CO
2
SENSOR WITH
BUZZER
10
20
30
40
50
60
70
80
90
100
Minimum
range
Minimum
alert
Maximum
alert
Output [%]
T [°C] / rH [%] / CO
2
[ppm]
*
Maximum
range
*
LED indications - T, rH or CO
2
(default)
WIRING AND CONNECTIONS
Article type
FCMFFB-R
FCMFGB-R
V+
18—34 VDC
18—34 VDC
15—24 VAC ±10%
V-
Ground
Common
ground
AC ~
A
Modbus RTU (RS485), signal A
/B
Modbus RTU (RS485), signal /B
Ao
Analogue / modulating output - T, rH or CO
2
(0—10 VDC / 0—20 mA / PWM)
GND
Ground
Common ground
Connections
Spring contact terminal block, cable cross section:
2,5 mm
2
; pitch 5 mm; shielded cable
ATTENTION
The -F version of the product is not suited for 3-wire connection. It has separate
grounds for power supply and for analogue output. Connecting both grounds
together might result in incorrect measurements. Minimum four wires are required
to connect -F type sensors.
The -G version is intended for 3-wire connection and features a “common ground”.
This means that the ground of the analogue output is internally connected to the
ground of the power supply. For this reason, -F and -G types of the product cannot
be used together on the same network. Never connect the common ground of -G
type articles to other devices, powered by a DC voltage. Doing so might cause
permanent damage to the connected device.
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting the unit, read carefully
“Safety and Precautions”
and
choose a smooth surface for installation (a wall, panel, etc.). Then proceed with the
following steps:
ATTENTION
When planning the installation, allow enough clearance for maintenance and
service. Mount the sensor in a well-ventilated area.
