DSTHM-2 COMBINED T AND RH DUCT TRANSMITTER. Mounting and operating instructions

Transcription

1 Mounting and operating instructions

2 Table of contents SAFETY AND PRECAUTIONS 3 PRODUCT DESCRIPTION 4 ARTICLE CODES 4 INTENDED AREA OF USE 4 TECHNICAL DATA 4 STANDARDS 4 OPERATIONAL DIAGRAMS 5 WIRING AND CONNECTIONS 5 MOUNTING & OPERATING INSTRUCTIONS IN STEPS 5 OPERATING INSTRUCTIONS 8 VERIFICATION OF INSTALLATION INSTRUCTIONS 9 MODBUS REGISTER MAPS 9 TRANSPORT AND STOCK KEEPING INFORMATION 10 WARRANTY AND RESTRICTIONS 10 MAINTENANCE 10 MIW--EN / 05 /

3 SAFETY AND PRECAUTIONS Read all the information, the datasheet, mounting and operating instructions and study the wiring and connection diagram before working with the product. For personal and equipment safety, and for optimum product performance, make sure you entirely understand the contents before installing, using, or maintaining this product. For safety and licensing (CE) reasons, unauthorised conversion and / or modifications of the product are inadmissible. The product should not be exposed to abnormal conditions, such as: extreme temperatures, direct sunlight or vibrations. Long-term exposure to chemical vapours in high concentration can affect the product performance. Make sure the 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 treat the product as if it is live. Always disconnect the power supply before connecting, servicing or repairing the product. Always verify that you apply appropriate power supply to the product and use appropriate wire size and characteristics. Make sure that all the screws and nuts are well tightened and fuses (if any) are fitted well. Recycling of equipment and packaging should be taken into consideration and these should be disposed of in accordance with local and national legislation / regulations. In case there are any questions that are not answered, please contact your technical support or consult a professional. MIW--EN / 05 /

4 PRODUCT DESCRIPTION The series are combined duct transmitters which measure temperature and relative humidity. They are Power over Modbus supplied and all parameters are accessible via Modbus RTU. ARTICLE CODES Code Supply Connection Power over Modbus, 24 VDC RJ45 INTENDED AREA OF USE Monitoring duct temperature and relative humidity in HVAC applications TECHNICAL DATA Selectable temperature and relative humidity ranges Selectable temperature range: 0 50 C Selectable relative humidity range: 5 85 % Accuracy: ±0,4 C (0 50 C); ±3 % rh (5 85 % rh), depending on the selected parameter Option for uploading a new firmware via Modbus RTU Minimum airflow velocity required: 1 m/s Enclosure and probe material: ASA, grey (RAL9002) Protection standard: Enclosure: IP54, Probe: IP20 Operating ambient conditions: temperature: 0 50 C rel. humidity: 5 85 % rh, (non-condensing) Storage temperature: C STANDARDS EMC Directive 2014/30/EC: EN :2013 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General requirements EN :2013 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-3: Particular requirements - Test configuration, operational conditions and performance criteria for transducers with integrated or remote signal conditioning WEEE Directive 2012/19/EC RoHs Directive 2011/65/EC MIW--EN / 05 /

5 OPERATIONAL DIAGRAMS Input register 1 [%] 100 Input register 2 [%] Min. range Max. range 50 T [ C] 0 5 Min. range Max. range 85 rh [%] WIRING AND CONNECTIONS Pins 1 & 2 Pins 3 & 4 Pins 5 & 6 Pins 7 & 8 24 VDC A /B GND Supply voltage (24 VDC) RS485, Modbus RTU communication, signal A RS485, Modbus RTU communication, signal /B Supply voltage, ground 24 VDC 8 mm A /B GND 8 mm 8 mm 8 mm RJ MOUNTING & OPERATING INSTRUCTIONS IN STEPS Before you start mounting the duct transmitter, read carefully Safety and Precautions. 1. When preparing to mount the, bear in mind that the unit itself must be installed onto the outer surface of the duct both via fixing the flexible flange or directly the unit enclosure, while the probe must be inserted inside the duct, see Fig. 1 and Fig. 2 below. MIW--EN / 05 /

6 Fig. 1 Mounting dimensions With flange Without flange 50 Ø 12 2x Ø , ,3 86, x Ø 4, ,5 Fig. 2 Mounting position Correct Incorrect AIR FLOW AIR FLOW 2. Having selected the appropriate mounting location, proceed with the following steps: 2.1 Drill a Ø 13 mm hole into the duct and insert the probe. Apply an air-tight sealing between probe and duct. 2.2 Fix the flange onto the duct outer surface using the self-drilling screws delivered with the unit. If you do not intend to use the flange, insert the tube and fix the enclosure onto the duct. Mind the airflow direction (see Fig. 2 and Fig. 3). MIW--EN / 05 /

7 Fig. 3 Mounting requirements 7,5*D (1) 3,5*D (1) D = Duct diameter ATTENTION Installation requirements: The must not be installed in turbulent air zones. Ensure sufficiently long settling zones upstream and downstream of the tapping point. A settling zone consists of a straight section of pipe or duct with no obstructions. Avoid installation near filters, cooling coils, fans, etc. The sensor will achieve the optimal result when the measurement is taken at least 7,5 duct diameters downstream and at least 3 duct diameters upstream from any turns or flow obstructions. ATTENTION Installation of the unit near high EMI-emitting devices may lead to faulty measurements. Use shielded wiring in areas with high EMI. ATTENTION Keep at least 15 cm distance between the sensor lines and the 230 VAC power lines. 2.3 Install the tube at the desired depth and, in case you use the flange, fix it via the plastic white screw in the flexible flange. 2.4 Unscrew the cover of the unit to remove it and insert the connecting cable through the cable gland of the unit. 2.5 Crimp the RJ45 cable and plug it into the socket, see Fig. 4 and section Wiring and connections above. Fig. 4 Wiring and connections 3. Customise the factory settings to the desired ones via the 3SModbus software or Sensistant (if necessary). For the default factory setting see Table Modbus register maps. MIW--EN / 05 /

8 Optional settings If your unit is the first or the last unit on the Modbus RTU network (see Example 1 and Example 2), enable the NBT resistor via 3SModbus or Sensistant (Holding Register 30). If your device is not an end device, leave the NBT disabled (default Modbus setting). Example 1 Example 2 Slave 1 NBT NBT RX ТX Master NBT RX ТX NBT Slave 2 Master NBT Slave n Slave 1 Slave 2 Slave n 4. Close the enclosure and fix the cover. 5. Switch on the power supply. CAUTION Do not expose to direct sunlight! OPERATING INSTRUCTIONS Calibration procedure: Both the relative humidity and temperature sensor elements are factory calibrated. Recalibration is not necessary. Bootloader Thanks to the bootloader functionality, the sensor firmware can be updated via Modbus RTU communication. To enter Boot mode, put a jumper onto pins 3 and 4 of the P1 header and restart the power supply (see Fig. 5). Once Boot mode is activated, the firmware can be updated via SM Boot application (part of 3SModbus software suite) or Sensistant. Fig. 5 P1 header Put a jumper onto pins 1 and 2 and wait for at least 5 seconds to reset the Modbus communication parameters Put a jumper onto pins 3 and 4 and restart the supply to enter bootloader mode MIW--EN / 05 /

9 VERIFICATION OF INSTALLATION INSTRUCTIONS If your unit does not function as expected, please check the connections. MODBUS REGISTER MAPS INPUT REGISTERS Data type Description Data Values 1 Temperature signed int. Actual temperature level ,0 C 2 Relative humidity Actual relative humidity level ,0 % rh 3 Dew point signed int. Calculated dew point ,0 C 4 10 Reserved, return 0 11 Output value 1 (T) Output value - temperature Output value 1 (rh) Output value - relative humidity Reserved, returns 0 14 Temperature alert flag 15 Relative humidity alert flag 16 Reserved, returns Temperature range limit flag Relative humidity range limit flag 19 Reserved, returns 0 20 Humidity / temperature sensor fault HOLDING REGISTERS Flag indicates that measured temperature is outside set alert values. Set to 1 when the measured value is outside the temperature alert values defined by holding registers 20 and 21. Flag indicates that measured relative humidity is outside set alert values. Set to 1 when the measured value is outside the relative humidity alert values defined by holding registers 22 and 23 Flag indicates that measured temperature is outside set range limit values. Set to 1 when the measured value is outside the temperature range limit values defined by holding registers 14 and 15 Flag indicates that measured relative humidity is outside set range limit values. Set to 1 when the measured value is outside the relative humidity limit range values defined by holding registers 16 and 17 Flag indicates if the communication with the temperature and humidity sensor is lost Data type Description Data Default Values 1 Device slave address Modbus device address Modbus baud rate Modbus communication baud rate Modbus parity mode Parity check mode Device type Device type (Read only) = % 100 % 0 % 100 % Measured temperature is OK Measured temperature is too high/ low Measured rh is OK Measured rh is too high/ low Temperature range is OK Temperature range is too high/ low rh range is OK rh range is too high/ low 5 HW version Hardware version of the device (Read only) XXXX 0x010 HW version FW version Firmware version of the device (Read only) XXXX 0x010 FW version Reserved, return Minimum temperature range Maximum temperature range Minimum relative humidity range Maximum relative humidity range Reserved, return Minimum temperature alert Maximum temperature alert Minimum relative humidity alert Maximum relative humidity alert Minimum value of the temperature range; cannot be set higher than max. temperature range minus 5ºC Maximum value of temperature range; cannot be set lower than min. temperature rang e plus 5ºC Minimum value of the rh range; cannot be set higher than max. rh range minus 5% Maximum value of rh range; cannot be set lower than min. rh range plus 5% Minimum temperature alarm value Maximum temperature alarm value Minimum relative humidity alarm value Maximum relative humidity alarm value Reserved, return 0 30 Modbus network resistor termination (NBT) 2 = 3 = 4 = 5 = 6 = 2 = No Yes N1 8E1 8O1 0 (Max. range - 50) ,0 C (Min. range + 50) ,0 C 50 (Max. range 50) ,0 % rh (Min. range + 50) = 85,0 % rh Min. temperature range Max. temperature alarm Min. temperature alarm Max. temperature range Min. relative humidity range Max. relative humidity alarm Min. relative humidity alarm Max. relative humidity range Set device as ending the line or not by connecting NBT Reserved, returns Modbus registers reset Reserved, return 0. Resets Modbus Holding registers to default values. When finished this register is automatically reset to 0 If you want to find out more about Modbus over serial line, please visit: ,0 ºC ,0 ºC ,0 % rh ,0 % rh NBT disconnected NBT connected Idle Reset Modbus registers MIW--EN / 05 /

10 TRANSPORT AND STOCK KEEPING INFORMATION Avoid shocks and extreme conditions; store in original packing. WARRANTY AND RESTRICTIONS Two years from the delivery date against 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 aggressive product. In these circumstances the unit should be disconnected from the supply. Pay attention that no fluids enter the unit. Only reconnect it to the supply when it is completely dry. MIW--EN / 05 /