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MIW-RSMFH-2R-EN-000 - 19 / 02 / 2020

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PRODUCT DESCRIPTION

The RSMFH-2R series are multifunctional room transmitters which 
measure temperature, relative humidity, CO

2

 concentration level and 

ambient light. They feature 24 VDC power supply and three analogue 
/ modulating outputs. All parameters are accessible via Modbus RTU.

ARTICLE CODES

Code

Supply 

Connection

RSMFH-2R

24 VDC

RJ45 or terminal block

INTENDED AREA OF USE

 

 Monitoring temperature, relative humidity and CO

2

 level in HVAC applications

 

Suitable for residential and commercial buildings

 

For indoor use only

TECHNICAL DATA

 

3 analogue / modulating outputs: 

 

0—10 VDC mode: min. load 50 kΩ (R

L

 ≥ 50 kΩ) 

 

0—20 mA mode: max. load 500 Ω (R

L

 ≤ 500 Ω) 

 

 PWM (open-collector type) mode: PWM Frequency: 1 kHz, min. load 50 kΩ (R

L

 ≥ 

50 kΩ); PWM voltage level 3,3 VDC or 12 VDC

 

Selectable temperature range: 0—50 °C

 

Selectable relative humidity range: 5—85 %

 

Selectable CO

2

 range: 0—2.000 ppm 

 

Ambient light sensor with adjustable ‘active’ and ‘standby’ level

 

Replaceable CO

2

 sensor element

 

3 LEDs for status indication

 

 Accuracy: ±0,4 °C (0—50 °C); ±3 % rH (5—85 % rH); ±30 ppm CO

2

  (0—2.000 ppm), 

depending on the selected parameter

 

Maximum power consumption: 2,4 W

 

Nominal power consumption in normal operation: 1,2 W

 

Imax: 100 mA

 

Enclosure:

 

rear plate: plastic ABS, black (RAL 9004)

 

front cover: ASA, ivory (RAL 9010)

 

Protection standard: IP30 (according to EN 60529)

 

Operating ambient conditions: 

 

temperature: 0—50 °C

 

rel. humidity: 5—85 % rH, (non-condensing)

 

Storage temperature: -10—60 °C

RSMFH-2R

MULTIFUNCTIONAL 
ROOM TRANSMITTER 

Summary of Contents for RSMFH-2R

Page 1: ...Mounting and operating instructions RSMFH 2R MULTIFUNCTIONAL ROOM TRANSMITTER ...

Page 2: ...ES 4 INTENDED AREA OF USE 4 TECHNICAL DATA 4 STANDARDS 5 OPERATIONAL DIAGRAMS 5 WIRING AND CONNECTIONS 6 MOUNTING OPERATING INSTRUCTIONS IN STEPS 6 OPERATING INSTRUCTIONS 9 VERIFICATION OF INSTALLATION INSTRUCTIONS 10 TRANSPORT AND STORAGE 10 WARRANTY AND RESTRICTIONS 10 MAINTENANCE 10 RSMFH 2R MULTIFUNCTIONAL ROOM TRANSMITTER ...

Page 3: ... work environment is as dry as possible avoid condensation All installations shall comply with local health and safety regulations and local electrical standards and approved codes This product can only be installed by an engineer or a technician who has expert knowledge of the product and safety precautions Avoid contacts with energised electrical parts Always disconnect the power supply before c...

Page 4: ... load 50 kΩ RL 50 kΩ 0 20 mA mode max load 500 Ω RL 500 Ω PWM open collector type mode PWM Frequency 1 kHz min load 50 kΩ RL 50 kΩ PWM voltage level 3 3 VDC or 12 VDC Selectable temperature range 0 50 C Selectable relative humidity range 5 85 Selectable CO2 range 0 2 000 ppm Ambient light sensor with adjustable active and standby level Replaceable CO2 sensor element 3 LEDs for status indication Ac...

Page 5: ...al commercial and light industrial environments Amendments A1 2011 and AC 2012 to EN 61000 6 3 EN 61326 1 2013 Electrical equipment for measurement control and laboratory use EMC requirements Part 1 General requirements EN 61326 2 3 2013 Electrical equipment for measurement control and laboratory use EMC requirements Part 2 3 Particular requirements Test configuration operational conditions and pe...

Page 6: ...C 0 20 mA PWM GND Ground AO3 The unit needs to be supplied via the RJ45 connector or via the connection terminals Do not connect the device via the RJ45 connector and the terminal block simultaneously MOUNTING OPERATING INSTRUCTIONS IN STEPS Before you start mounting the unit read carefully Safety and Precautions Choose a smooth surface for installation a wall panel and etc Follow these steps 1 Us...

Page 7: ... 9 8 74 5 104 5 20 104 5 25 6 70 5 Fig 3 Mounting position Correct Incorrect Position at min 1 5 m from the floor 4 Do the wiring according to the wiring diagram see Fig 4 Fig 4 Wiring and connections Correct connections 24 VDC GND A B Output 1 T Output 2 rH Output 3 CO2 Output 1 T Output 2 rH Output 3 CO2 24 VDC GND A B RSMFH 2R MULTIFUNCTIONAL ROOM TRANSMITTER ...

Page 8: ...cument attached to the article code on the website and contains the registers list Products with earlier firmware versions may not be compatible with this list NOTE 5 Optional settings To assure correct communication the NBT needs to be activated in only two devices on the Modbus RTU network If necessary enable the NBT resistor via 3SModbus or Sensistant Holding register 9 Example 1 Example 2 RX Т...

Page 9: ...easured value temperature relative humidity or CO2 is in the alert range Fig 5 2 3 When the red LED is on the measured value temperature relative humidity or CO2 is below the minimum measurement range value or above the maximum value Blinking red LED indicates loss of communication with a sensor Fig 5 3 Fig 5 LED indications 3 2 1 NOTE By default the LED indication refers to temperature measuremen...

Page 10: ...gainst defects in manufacturing Any modifications or alterations to the product after the date of publication relieve the manufacturer of any responsibilities The manufacturer bears no responsibility for any misprints or mistakes in this data MAINTENANCE In normal conditions this product is maintenance free If soiled clean with a dry or damp cloth In case of heavy pollution clean with a non aggres...

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