Rotronic CF8-W-Disp-AL Short Instruction Manual

Brand
Rotronic
Model
CF8-W-Disp-AL
Type
Short Instruction Manual

Rotronic CF8-W-Disp-AL is a versatile and feature-rich CO2 transmitter, packed with capabilities that can help you optimize your indoor environments and enhance air quality monitoring. Here's a brief overview of its key features and potential use cases:

  • CO2 Measurement and Monitoring: The CF8-W-Disp-AL accurately measures and displays CO2 levels in the air, making it ideal for various applications such as demand-controlled ventilation, indoor air quality monitoring, and environmental control.

  • Dual Relay Outputs: Equipped with two independent relay outputs, you can configure the device to trigger specific actions based on CO2 concentration thresholds. For instance, you can set up the relays to control ventilation systems, activate alarms, or initiate other automated responses when CO2 levels exceed or fall below desired limits.

Rotronic CF8-W-Disp-AL is a versatile and feature-rich CO2 transmitter, packed with capabilities that can help you optimize your indoor environments and enhance air quality monitoring. Here's a brief overview of its key features and potential use cases:

  • CO2 Measurement and Monitoring: The CF8-W-Disp-AL accurately measures and displays CO2 levels in the air, making it ideal for various applications such as demand-controlled ventilation, indoor air quality monitoring, and environmental control.

  • Dual Relay Outputs: Equipped with two independent relay outputs, you can configure the device to trigger specific actions based on CO2 concentration thresholds. For instance, you can set up the relays to control ventilation systems, activate alarms, or initiate other automated responses when CO2 levels exceed or fall below desired limits.

Dokument
IMA 210
Rev
1
Page
1 (6)
Installation manual
CF8-W-Disp-AL
CO
2
transmitter with two relays mounted in
industrial housing prepared for Modbus
communication protocol
1 Wall plate 5 Snap-in lid
2 PCB (Factory supplied mounted in box) 6 Locking screw of the lid (not shown)
3 Temperature sensor 7 PG9 cable entry bushing
4 Hole for wall plate hooks 8 Air holes
5
7
8
8 6 3
4
2
1
Dokument
IMA 210
Rev
1
Page
2 (6)
9 Lid locking screw
10 Wall plate
11 Locking screw
12 Drill mark for cable entry bushing
13 Drill mark for cable entry bushing
Dismounting the wall plate
The sensor is delivered with the wall plate mounted. The wall plate has to be
removed before the sensor is mounted onto the wall. Unscrew the screw on the side
of the box. See figure 3.
Wall Mounting Instruction
Normally the PCB should not be removed from the housing. If for some reason the
PCB must be removed it must be handed carefully and protected from electrostatic
discharge.
1) Electrical cable entry: The box has a factory mounted cable entry bushing in
dimension PG9. Never feed more than one cable through each cable entry bushing,
or else gas might leak through!
2) Screw the wall plate onto the wall: The wall plate has holes for three screws.
Drill holes for 3,5mm screws and put dowel into them. Dowels and screws 3,5 x
25mm are included in a plastic bag
3) Attaching the sensor box to the wall plate is done by a snap-in fitting. The wall
plate has three hooks that fit in holes in the sensor box. Fasten the screw on the side
of the box.
4) The lid can be locked with the screw at the bottom of the sensor box.
If for some reason the PCB must be removed it must be handed carefully
and protected from electrostatic discharge! Normally, removing the PCB is
not required.
Dokument
IMA 210
Rev
1
Page
3 (6)
Electrical connections
The power supply has to be connected to and . is considered as
system ground. If the analogue output is connected to a controller the same ground
reference has to be used for the CF8-W-Disp-AL unit and for the control system!
Unless different transformers are used, special precautions need to be taken.
PLEASE NOTE! The CF8-W-Disp-AL signal and
power supply grounds are common.
PLEASE NOTE! The same ground reference
has to be used for the CF8-W-Disp-AL unit and
for the control system!
If possible keep the sensor powered up after mounting. Connect the analogue output
before measuring.
~
+
Dokument
IMA 210
Rev
1
Page
4 (6)
No
Function
Electrical Data
Remarks
1
2
Power (+)
Power ground (-)
24 VAC/DC+ (+-20%),
3W
24 VAC/DC-
2W without output load
See note 1!
3
4
5
Out(2)
Unmarked
Analogue Output
1 (+)
Analogue Output
2 (+)
Signal Ground (-)
0-10 VDC or 0-20 mA
2-10 VDC or 4-20 mA
0-10 VDC or 0-20 mA
2-10 VDC or 4-20 mA
Connected to via
PTC fuse
According to positions of
OUT1 and start point
jumpers.
See note 2!
According to positions of
OUT2 and start point
jumpers.
See note 2!
See note 1!
6
7
8
COM1
NC1
(OUT3)
Relay1 Normally
Open
Relay1 Common
Relay1 Normally
Closed
Contact free relay
minimum load 1mA/5V
rated load
0,5A/125VAC;
1A/24VDC
Standard
Open < 1.4 % CO
2
Closed > 1.5 % CO
2
The relay output is potential
free
9
10
11
COM2
NC2
(OUT4)
Relay2 Normally
Open
Relay2 Common
Relay2 Normally
Closed
Contact free relay
minimum load 1mA/5V
rated load
0,5A/125VAC;
1A/24VDC
Standard
Open < 2.9 % CO
2
Closed > 3.0 % CO
2
The relay output is potential
free
cation
jumper
Used to set
communication
protocol
Upper
Modbus communication
protocol
Table I. Electrical terminal connections for CF8-W-Disp-AL
Note 1: The ground terminal is used as negative power supply DC input or AC phase ground
(halfwave rectifier). The signal ground M, protected by a PTC resistor, is the same as power ground
G0 (permitting a ”3-wire” configuration). A single transformer may be used for the entire system.
Note 2: CF8-W-Disp-AL can deliver a voltage or a current loop for Out(1)/Out(2). To change between
voltage and current output mode the hardware jumpers are used. There is one jumper for Out(1) and
one for Out(2), so that one output can be a voltage output and the other a current output. Both, voltage
output and current output, can have start points 0 % (0-10 VDC or 0-20mA) or 20% (2-10 VDC or 4-
20mA). The same start point is used for both outputs. See the user manual.
~
+
Dokument
IMA 210
Rev
1
Page
5 (6)
~
+
An application example illustrating connections to peripheral alarm devices are
shown here.
Connection of peripheral alarm devices to relay 1 and relay 2
Dokument
IMA 210
Rev
1
Page
6 (6)
Dimensions and holes
The dimensions of the sensor in mm and inches
The measurements of the wall plate in mm and inches
85 (3,35)
9,5 (0,37)
141,8 (5,58)
40 (1,57)
85 (3,35)
10(0,39)
38,5(1,5)
82(3,23)
66(2,60)
41(1,61)
17,5(0,69)
40,5(1,59)
63(2,48)
Ø5(0,20)
Ø5(0,20)
Ø5(0,20)
42(1,65)
39,9(1,57)
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  • Page 5 5
  • Page 6 6

Rotronic CF8-W-Disp-AL Short Instruction Manual

Brand
Rotronic
Model
CF8-W-Disp-AL
Type
Short Instruction Manual

Rotronic CF8-W-Disp-AL is a versatile and feature-rich CO2 transmitter, packed with capabilities that can help you optimize your indoor environments and enhance air quality monitoring. Here's a brief overview of its key features and potential use cases:

  • CO2 Measurement and Monitoring: The CF8-W-Disp-AL accurately measures and displays CO2 levels in the air, making it ideal for various applications such as demand-controlled ventilation, indoor air quality monitoring, and environmental control.

  • Dual Relay Outputs: Equipped with two independent relay outputs, you can configure the device to trigger specific actions based on CO2 concentration thresholds. For instance, you can set up the relays to control ventilation systems, activate alarms, or initiate other automated responses when CO2 levels exceed or fall below desired limits.

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