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Summary of Contents for Air Monitor ELECTRA-flo/SD
- Page 1 ELECTRA-flo SD Thermal Airflow & Temperature With BACnet MS/TP or MODBUS RTU Output...
- Page 2 • All rights reserved. No part of this manual may be reproduced in any form without Air Monitor’s written permission. • Air Monitor makes no warranty of any kind with regard to this material, including, but not limited to, implied warranties of merchantability and suitability for a particular purpose.
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Page 3: Table Of Contents
4.2 BACnet PIC STATEMENT..............................4.3 AVAILABLE BACnet OBJECTS............................4.4 ADDITIONAL BACnet OBJECT INFORMATION......................4.4.1 Device Object................................4.4.2 Analog Input Objects..............................4.4.3 Analog Value Objects..............................4.5 MODBUS RTU MEMORY MAP............................5.0 MAINTENANCE / INSPECTIONS......................5.1 TROUBLESHOOTING................................. Air Monitor +1 (800) airflow Page 3 www.airmonitor.com... -
Page 4: Introduction
ELECTRA - FLO SD 1.0 INTRODUCTION We, at Air Monitor, would like to thank you for purchasing our quality, U.S. made, Thermal Airflow & Temperature Measurement System. As our valued customer, our commitment to you is to provide fast, reliable service and assistance, while continuing to offer you new products to meet your growing flow measurement needs. -
Page 5: Specifications
Power Supply: 24 VAC (20-28 VAC) or 24 VDC (20-40 VDC), automatically selected Power Consumption: 5 VA or 5 W Circuit Protection: Power input is isolated, fused, and reverse polarity protected IMPORTANT NOTE: Specifications subject to change without notice. Air Monitor +1 (800) airflow Page 5 www.airmonitor.com... -
Page 6: Installation
3.0 INSTALLATION 3.1 INSTALLATION The ELECTRA-flo/SD is intended for use in 4” to 16” ducts and in VAV terminal box applications in an environment between -20°F to 120°F where it will not be exposed to rain or snow. The ELECTRA-flo/SD electronics enclosure is designed to be mounted to the exterior of the duct or VAV box with the sensor probe inserted through the side of the duct or VAV box. -
Page 7: Mounting
ELECTRA-flo/SD’s minimum placement guidelines. IMPORTANT NOTE: It may be necessary to remove a portion of external duct insulation to allow the ELECTRA-flo/SD to be securely mounted to the exterior of the duct wall. 2. Remove the four screws (8-32 x 0.325) that attach the mounting bracket to the enclosure. -
Page 8: Power/Signal Connections
CAUTION: Incoming and outgoing RS485 cable shield wires should be connected together, but must not be connected to the RS485 ground. The ELECTRA-flo/SD can be powered by either 24 VAC providing 20-28 VAC or 24 VDC providing 20-40 VDC. Air Monitor +1 (800) airflow Page 8 www.airmonitor.com... -
Page 9: Configuration
Down Not Engaged (No Termination)* S2 Bank, SW1 U.S. / SI Units Up SI Units Down US Units* S2 Bank, SW2 through SW8 BACnet Addressing 7 Bit BACnet MS/TP MAC Address and Instance Number Configuration Air Monitor +1 (800) airflow Page 9 www.airmonitor.com... -
Page 10: Start-Up / Operation
3. Confirm the BACnet or MODBUS output is being correctly received by the BMS. 4. Replace the cover of the ELECTRA-flo/SD making sure not to pinch any wires and secure in place with the four screws. Do not over tighten. -
Page 11: Bacnet Ms/Tp Or Modbus Rtu
ELECTRA-flo/SD is first brought on to the MS/TP network, the device instance number will be identical to the MAC address configured with the dip-switches. Once the ELECTRA-flo/SD is added to the network, the instance number can be configured through the ELECTRA-flo/SD’s Device Object in the BACnet system to any number from 0-4,194,303. - Page 12 ELECTRA - FLO SD SW 2 SW 3 SW 4 SW 5 SW 6 SW 7 SW 8 Air Monitor +1 (800) airflow Page 12 www.airmonitor.com...
- Page 13 ELECTRA - FLO SD SW 2 SW 3 SW 4 SW 5 SW 6 SW 7 SW 8 Air Monitor +1 (800) airflow Page 13 www.airmonitor.com...
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Page 14: Bacnet Pic Statement
Send Who-Has, receive I-Have (BIBB DM-DOB-A) Receive Who-Has, send I-Have (BIBB DM-DOB-B) Manual configuration of recipient device’s network number and MAC address None of the above Standard Object Types Supported Analog Input Analog Value Device Object Air Monitor +1 (800) airflow Page 14 www.airmonitor.com... -
Page 15: Available Bacnet Objects
Input-4, Analog Value-0 Max ADPU Length Read-only Segmentation Supported NO_SEGMENTATION (3) Read-only APDU Timeout 3000 Read-only # of APDU Retries Read-only Max Master Read-only Device Address Binding Read-only Active Database Revision Read-only Air Monitor +1 (800) airflow Page 15 www.airmonitor.com... -
Page 16: Analog Input Objects
Analog Value 0 is used to scale the velocity to a volumetric flow rate. Mind the flow rate and the units of measurement the ELECTRA-flo/SD is currently set for. When in US units, the AV-0 present value should be set to square feet. When in SI units, the AV-0 present value should be set to square meters. -
Page 17: Modbus Rtu Memory Map
*Register 40008 is used to scale the velocity to the volumetric flow rate. Data is entered in the units of measurement the ELECTRA-flo/SD is currently set for. When in US units, the register value should be set to square feet. When in SI... -
Page 18: Maintenance / Inspections
ELECTRA-flo SD SECTION 5.0: MAINTENANCE / INSPECTIONS The ELECTRA-flo/SD has been designed to operate in most HVAC applications without the need for periodic maintenance or calibration. In some applications it may be necessary to perform a visual inspection of the probe and sensors, and if necessary clean them using a soft, small brush and/ or compressed air to remove any accumulated particulate or debris.
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