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Carbon Monoxide (CO) Gas Detectors

RCO-series

Ventilation Control Products Sweden AB  

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Phone:  +46-31-811666  

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E-mail: [email protected]  

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Web: www.vcp.se

April 2020

Wall mount version:
Fix the device on a wall by screws, using cross-shaped mounting lugs supplied with the instrument 
(see dimensional drawing below).

Duct mount version: 
Cut hole with a diameter of 36-45 mm in the air duct at the chosen mounting place. 
Place the rubber flange aligning the holes in the flange and the air-duct and fix the flange with four self-tapping screws. 
Pass the sensor probe through the flange and adjust it to the appropriate depth.

Unscrew four lid screws and detach the lid from the transmitter.
Use two M16 cable glands to pass the cables of the power supply and of the external devices. 
Plug the power cable and connect the analog outputs and/or digital interface terminals to the relevant devices according 
to the connection diagram.

The screw less quick connect spring terminals on the Detector devices are
suitable for a wide range of wires with cross-section 0,2...1,5 mm2. 

We recommend to strip the wire end by 8...9 mm and tin it, or to use the wire end sleeves.
To connect the wire, insert the wire end into terminal hole. 
To disconnect, push the spring loaded terminal lever, pull the wire out, and release the lever.

Use twisted pair cable, e.g. LiYY TP 2×2×0,5 mm2 or CAT 5, to connect the device to RS485 network. 
Use one pair for A and B wires and the second pair for common 0 V and power +U wires to connect the transmitter to Fieldbus network. 
Respect polarity. 
Overall length of all connections via RS485 interface should not exceed 1200 m. 
The type of each analog output can be independently changed between 4- 20 mA and 0-10 Vdc with jumpers J1 (OUT1) and J2 (OUT2).
With closed jumper the output is 0-10 V, with open jumper the output is 4-20 mA.
By default both outputs OUT1 and OUT2 are assigned to gas concentration. 
The device has built-in temperature sensor which may be tied to any of the outputs.
The output assignments and scales can be changed by Modbus commands.

NOTE If you use a version with LCD, only OUT1 is available.

Turn on the power. 
The sensor heating up may take up to five minutes after switching on. 
During this period relays, analog outputs and Modbus interface are off. 
A LED placed on the PCB of the device allows to control the connection process. 
The LED response to different processes is presented in the table below.

Make sure that the transmitter is properly fixed, the external devices connected, power on and control LED is constantly lit.
Place the lid back and fix it with the screws.
The device is ready to use.
It is recommended to keep the device on constantly, except for periods of maintenance and calibration, replacement etc.

Summary of Contents for RCO Series

Page 1: ..._______________ Type no Description _______________________________________________ RCO 100 Carbon Monoxide CO gas detector range 0 100 ppm RCO 300 Carbon Monoxide CO gas detector range 0 300 ppm RCO...

Page 2: ...Light grey ABS plastic protection class IP65 Dimensions H82 W80 D55 mm Operating environment Industrial indoor and outdoor areas without aggressive gases Operating conditions 20 to 50 C 15 95 RH non...

Page 3: ...is available as an option Safety requirements Always adhere to the safety provisions applicable in the country of use Do not perform any maintenance operation with the power on Do not let water or for...

Page 4: ...out and release the lever Use twisted pair cable e g LiYY TP 2 2 0 5 mm2 or CAT 5 to connect the device to RS485 network Use one pair for A and B wires and the second pair for common 0 V and power U...

Page 5: ...ater drops The filter may be replaced if it gets strongly contaminated To replace the PTFE filter unscrew the M25 nut and remove the old filter Place a new filter into the nut and tighten it again Dim...

Page 6: ...ough its RS485 interface by Modbus RTU commands A standard configuration kit includes Model E1087 USB EIA485 converter and a software pack Please contact your Seller for more information Return to def...

Page 7: ...Monoxide CO Gas Detectors RCO series Ventilation Control Products Sweden AB Phone 46 31 811666 E mail info vcp se Web www vcp se April 2020 Electrical connection Note For LCD version only OUT1 is ava...

Page 8: ...roducts Sweden AB Phone 46 31 811666 E mail info vcp se Web www vcp se We reserve the right to make changes in our products without any notice which may effect the accuracy of the information containe...

Page 9: ...U Communication Reference The new value is applied after restart Broadcast slave ID 0 can be used to assign a new ID to device with unknown ID When addressing by ID 0 the device shall be the only Modb...

Page 10: ...ster addresses are shown 0 based Addr in hexadecimal Reg in decimal format Modbus holding register numbers MHR are shown in decimal 1 based format and may be addressed either from 00001 or 40001 base...

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