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MIW-FCMFX-R-EN-000 - 08 / 07 / 2020
6 - 9
WIRING AND CONNECTIONS
Article type
FCMFF-R
FCMFG-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 AO
Common ground
*
Connections
Spring contact terminal block, cable cross section: 2,5 mm
2
; pitch
5 mm; shielded cable
The -F version of the product is not suited for 3-wire connection. It has separate
grounds for power supply and analogue output. Connecting both grounds together
might result in incorrect measurements. Minimum 4 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 with
the ground of the power supply. For this reason, -G and -F types 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 devices.
ATTENTION
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting the unit, read carefully
“Safety and Precautions”
.
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.
1.
Disconnect the supply voltage.
2.
Remove the cover of the enclosure and take the controller out of the housing, so
that it can be easily connected.
3.
Do the wiring according to the wiring diagram (see
Fig. 1
).
Fig. 1 Wiring and connections
Supply voltage:
FCMFF-R: 18—34 VDC
FCMFG-R: 18—34 VDC / 15—24 VAC ±10 %
Modbus
RTU
/B
A
Analogue / modulating
output
FCMFX-R
INTELLIGENT MULTIFUNCTIONAL
SENSOR
