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Emerson Spectrex 20 Quick Start Manual
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Emerson Spectrex 20 Quick Start Manual

Emerson Spectrex 20 Quick Start Manual

Flame detector
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Quick Start Guide
For Additional Product Information:
MS-00925-0100-9020, Rev AE
March 2025
If QR code is not affixed
here, product documents can
be located by entering your
product's S/N into the search
tool (magnifier icon) at the
top of the webpage found at
www.emerson.com
Spectrex
™
20/20Q Flame Detector

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Summary of Contents for Emerson Spectrex 20

  • Page 1 MS-00925-0100-9020, Rev AE March 2025 If QR code is not affixed here, product documents can be located by entering your product's S/N into the search tool (magnifier icon) at the top of the webpage found at www.emerson.com Spectrex ™ 20/20Q Flame Detector...

  • Page 2: Safety Information

    Contents Safety information.............................2 Introduction............................... 2 Installation..............................3 1 Safety information  WARNING Physical access Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could be intentional or unintentional and needs to be protected against. Physical security is an important part of any security program and fundamental in protecting your system.

  • Page 3: Installation

    Preparation for use The installation sequence may vary according to the physical structure of the site. The following tools are required for installation: Note These are standard tools. Emerson does not supply them with the detector. Table 3-1: Required Tools Tool Function...

  • Page 4: Tilt Mount

    3.3  Tilt mount Figure 3-1: Tilt Mount A. Clamp locking screw B. Horizontal/vertical locking screw C. Rotating clamp D. Tilt holding plate Figure 3-2: Tilt Mount Photo...
  • Page 5 Figure 3-3: Tilt Mount Dimensions Dimensions are in millimeters. Procedure 1. Unpack the detector. Emerson provides a plastic protection plug with the detector. See Figure 3-4. Figure 3-4: Detector with a Plastic Protection Plug Note The tilt mount features a single X/Y rotation axis. Consider the desired position of the tilt...
  • Page 6 2. Use the 5 mm hex key to release the captive screw that locks the clamp. A. Clamp locking screw B. Rotating clamp C. Horizontal/vertical locking screw D. Detector conduit 3. Place the detector conduit within the clamp. Note To change the detector field of view, release the horizontal/vertical locking screw. 4.

  • Page 7: Wiring Preparation

    3.4  Wiring preparation Procedure 1. Use a Phillips head screwdriver (see following image) to unfasten the locking screw (A) on the back cover. A. Back cover security screw B. Protective plug 2. Unscrew and remove the back cover to access the terminal compartment. 3.
  • Page 8 Figure 3-5: Terminals Table 3-2: Terminal Box Terminal Function 24 Vdc (+) 24 Vdc (-) RS-485A+ RS-485B- Alarm relay - common (COM) Alarm relay - normally open (NO) Fault relay - COM Fault relay - NO 4-20 mA (-) Figure 3-6: Connector 1...
  • Page 9 Figure 3-7: Connector 2 Table 3-3: Signal VIN_PWR GND_PWR (Ground power) 4-20 (-) Fault Relay COM (common) Fault Relay NO (normally open) Alarm Relay COM Alarm Relay NO RS-485 (-) RS-485 (+) Shield Figure 3-8 Figure 3-9 for typical wiring configurations.
  • Page 10 Figure 3-8: Typical Wiring Configuration for Four-Wire Controllers A. Controller B. First detector C. Second detector D. Last detector E. Power supply F. Alarm loop G. End of line Figure 3-9: Source Three-Wire A. Detector B. Controller C. Input power: 18-32 Vdc D.
  • Page 11 4. Use the Phillips screwdriver to screw the back cover security screw to fix the back cover. Figure 3-10: Security Screw A. Back cover security screw. 5. Connect the ground cable. Figure 3-11: Ground Cable Connection F. Ground cable connection point 3.6 ...
  • Page 12 *MS-00925-0100-9020* Quick Start Guide MS-00925-0100-9020, Rev. AE March 2025 For more information: Spectrex.net © 2025 Emerson. All rights reserved. Spectrex is a mark of one of the Emerson family of companies. All other marks are the property of their respective owners.

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Spectrex 20q