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S-Series Air Flow Switches USER GUIDE 66101MN000-A02
S-Series Air Flow Switches
User Guide
DEGREE CONTROLS, INCORPORATED
18 Meadowbrook Drive
Milford, New Hampshire 03055 USA
Degree Controls, Inc. © Copyright 2018, all rights reserved.
Information in this document is subject to change without notice.
Windows® is a registered trademark of Microsoft Corporation • All other trademarks are property of their respective owners.
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S-Series Air Flow Switches USER GUIDE 66101MN000-A02
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Summary of Contents for DEGREE CONTROLS S-Series
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Page 1: User Guide
18 Meadowbrook Drive Milford, New Hampshire 03055 USA Degree Controls, Inc. © Copyright 2018, all rights reserved. Information in this document is subject to change without notice. Windows® is a registered trademark of Microsoft Corporation • All other trademarks are property of their respective owners. -
Page 2: Table Of Contents
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 Table of Contents General Information ................................. 3 Overview ....................................3 Features ....................................3 1.2.1 Mechanical Features ................................ 3 1.2.2 Electrical & Performance Features ..........................3 Product Specifications ................................4 General Specifications ................................4 Model Specifications ................................ -
Page 3: General Information
Additionally, the Switch series is configured to order, with a variety of velocity ranges, mechanical lengths, and output communication styles available. The S-Series Switches are manufactured in directional and non-directional styles. Directional Switches only sense flow from one direction, and are immune to flow reversals. Non-directional Switches will sense flow from either direction in the duct or environment. -
Page 4: Product Specifications
Selectable lengths (See Section 2.3, Length) Temperature Compensation: The S-Series Switch is a thermal airflow switch; it is sensitive to changes in air density and measures velocity with reference to a set of standard conditions (21°C (70°F), 760mmHg (101.325kPa), and 0%RH). The S-Series Switch has been designed and calibrated to automatically compensate for temperature effects up to 60°C. -
Page 5: Hardware Configuration
2 = Normally Closed (N.C.) Communication* UART or I *Note: For an additional charge, the S-Series Switches can be configured with digital communication, with either UART or I Call DegreeC for ordering information. 2.4 Trip Point Configuration In addition to selecting direction, length, output, and polarity, the S-Series Switches can be configured with a variety of additional features as noted below: •... - Page 6 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 Trip Point Configuration Figure 1: Alarming Above the Trip Point Trip Point Configuration Figure 2: Alarming Below the Trip Point S-Series Air Flow Switches USER GUIDE 66101MN000-A02...
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Page 7: Wiring Information
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 3 Wiring Information Depending on the choice of output when configuring the S-Series Switch, wire configurations will differ, as noted below: 3.1 Open Drain Output Wire Color Wire Gauge Description Black Power Supply Ground... -
Page 8: Wiring Diagrams
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 3.5 Wiring Diagrams 3.5.1 Open Drain Style Output S-Series Air Flow Switches USER GUIDE 66101MN000-A02... -
Page 9: Solid State Relay Style Ouput
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 3.5.2 Solid State Relay Style Ouput 3.5.2.1 Isolated Grounds 3.5.2.2 Non-Isolated Grounds S-Series Air Flow Switches USER GUIDE 66101MN000-A02... - Page 10 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 3.5.2.3 Multiple Isolated Grounds 3.5.2.4 Multiple Non-Isolated Grounds S-Series Air Flow Switches USER GUIDE 66101MN000-A02...
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Page 11: Mechanical Information
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 4 Mechanical Information 4.1 Switch Head Mechanical Drawings Mechanical Figure 2: S-Series Switch Head Mechanical Figure 1: S-Series Switch Head (Directional) (Non-Directional) 4.2 °C Clamp Mechanical Drawing Mechanical Figure 3: °C Clamp S-Series Air Flow Switches USER GUIDE 66101MN000-A02... -
Page 12: Mounting And Positioning
Note: Two sensor lengths are available to accommodate insertion depths of 61mm [1.25"] to 245mm [9.6"]. See Mounting Figure 1 above for insertion "zero point" datum. The S-Series Switch utilizes either a °C Clamp or Gland fitting for installation. Please follow the below instructions for optimal installation: 5.1 Gland Installation... -
Page 13: C Clamp Installation
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 5.2 °C Clamp Installation 1. Mark the sensor hole, and screw positions, per Step 1 of Figure 4, below. 2. Drill a 17/32” (14mm) hole through the surface you wish to install the Sensor. -
Page 14: Airflow Direction
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 5.3 Airflow Direction To ensure that the Switch actuates within its published specifications, proper mounting precautions must be followed: • The main airflow cavity that surrounds the flow thermistor must be orientated perpendicular to the airflow being monitored. -
Page 15: Communication
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 6 Communication The S-Series Switches support two methods of communication: UART and I C. The choice of communication is set up at DegreeC prior to shipment. 6.1 UART The communication protocol described below is for communication between a master host and the slave Switch product. -
Page 16: I 2 C
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 Password Protection Setpoints designated as (RWP) in the Memory Map require two consecutive Memory Write commands to change the setpoint. • Command #1: Memory Write 0xAA to the Password (index 83). • Command #2: Memory Write the new value to the password protected register. If valid, Switch will accept the commands and write the new value. - Page 17 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 Slave Slave Data Addre Addre Addre Byte Start bit Slave Address Switch Address A shaded Acknowledge from the switch (0 to indicate Ack) Sub Address Index into the switch Memory Map Data Byte...
- Page 18 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 Password Protection Setpoints designated as (RWP) in the Memory Map require two consecutive I C write commands to change the setpoint. • Command #1: Write 0xAA to the Password (index 83). • Command #2: Write the new value to the password protected register. If valid, the Switch will accept the commands and write the new value.
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Page 19: Sensor Registers
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 7 Sensor Registers The sensor setpoints and process parameters can be accessed by reading and writing into the memory map using the appropriate serial communications interface. The table below provides specific details for these parameters: 7.1 Memory Map... - Page 20 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 0x0A Smart Averaging: (bit mapped) bit 0 –> bit 6: not used bit 7: 0=Smart Averaging set to OFF 1=Smart Averaging set to ON 0x0B Calibrated (0=UNCALIBRATED, 1=CALIBRATED) 0x0C Unique ID: ID Data...
- Page 21 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 0x3F Sample Time: Determines the sample time (sec) used to calculate the rolling average velocity. Value range is (0 to10), results in sample times (0.4 sec to 10.0 sec). Examples: 0=.4 sec, 1=1.0 sec, 2=2.0 sec, 3=3.0 sec, 5=5.0 sec, 10=10.0 sec.
- Page 22 S-Series Air Flow Switches USER GUIDE 66101MN000-A02 0x52 Alarm Output: -Reflects the state of the Alarm SSR 0=Alarm SSR OFF Open 1=Alarm SSR ON Closesd 0x53 Password: To write to RWP type items, this Password register must first be set to 0xAA. Then a 0xFF second write command can write to the RWP item.
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Page 23: Degree Controls Inc. Product Warranty
S-Series Air Flow Switches USER GUIDE 66101MN000-A02 8 Degree Controls Inc. Product Warranty For a period of one (1) year following the date of delivery, and subject to the other provisions of this Warranty Section, DegreeC warrants that all new products that are both (a) manufactured by DegreeC and (b) purchased directly from DegreeC (or an authorized distributor of DegreeC) shall be free of material defects in materials and workmanship.
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