Emerson Rosemount 975 Reference Manual
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Emerson Rosemount 975 Reference Manual

Flame detectors
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Reference Manual
00809-1500-4975, Rev AA
June 2021
™
Rosemount
975 Flame Detectors
®
Modbus
Manager Manual

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Summary of Contents for Emerson Rosemount 975

  • Page 1 Reference Manual 00809-1500-4975, Rev AA June 2021 ™ Rosemount 975 Flame Detectors ® Modbus Manager Manual...
  • Page 2 Emerson does not assume any liability arising out of the application or any use of any product or circuit described herein;...
  • Page 3 WITHOUT LIMITATION FOR CAPITAL, FUEL AND POWER, AND CLAIMS OF BUYER'S CUSTOMERS. Technical support To get technical support for this product, contact your local Rosemount representative or the Rosemount Technical Support department at +1 866 347 3427 or safety.csc@emerson.com Abbreviations and acronyms Abbreviation or acronym Definition...
  • Page 4 Abbreviation or acronym Definition Unified coarse thread Volts alternating current Volts direct current...

  • Page 5: Table Of Contents

    4.4 Set fixed current 4-20 values......................28 4.5 Parameter download......................... 29 4.6 Version information........................29 4.7 Service functions........................29 Appendix A Reference data......................31 A.1 Ordering information, specifications, and dimensional drawings..........31 A.2 Product certifications and installation drawings.................31 A.3 Failure status codes........................31 Rosemount 975...
  • Page 6 Contents Reference Manual June 2021 00809-1500-4975 Emerson.com...

  • Page 7: Chapter 1 Introduction

    This guide describes the Modbus Manager and provides instructions on how to install, operate, and maintain the software. Note The Modbus Manager software is for use with Rosemount 975 models only. Minimum requirements The minimum requirements for operating the Modbus Manager are as follows: ®...
  • Page 8 Introduction Reference Manual June 2021 00809-1500-4975 Emerson.com...

  • Page 9: Chapter 2 Initial Setup

    ® To download the Modbus Manager, follow these steps: Procedure 1. Go to Emerson.com/Rosemount. 2. Using the site navigation, go to the relevant product page 3. Scroll down to Documents and Drawings. 4. Click SOFTWARE DOWNLOADS & DRIVERS. 5. Download the relevant file.

  • Page 10: Connect Device To Harness Cable

    (if not, adjust the cable wiring to fit the desired adapter). Procedure 1. Unscrew the cover of the USB adapter. 2. Set up jumpers using one of the following options. • • 3. Close the USB adapter cover. 4. Connect the cable. Emerson.com...

  • Page 11: Establish The Com Port

    Reference Manual Initial setup 00809-1500-4975 June 2021 Establish the COM port Prerequisites When first connecting the harness, you will be prompted to select a COM port. Procedure ® 1. Open Modbus Manager. 2. Select Device Manager. 3. Select Ports. Rosemount 975...

  • Page 12: Connecting The Device

    The device must be connected to power and the RS485 should be connected to the terminals according to the following table: Function Wire color Terminal RS485 (+) RS485 (-) Black Note The detector address set by the factory is ‘1’. When locating the detector address, only one detector should be connected. Emerson.com...

  • Page 13: Chapter 3 Operation

    The left menu and top bar display on every screen. The left menu displays the brand name and navigation controls; the top menu displays device information. A. Device brand B. Top menu (device information) C. Left menu (navigation controls) D. Settings and actions Rosemount 975...
  • Page 14 C. Full detector model code D. Communication status E. Detector status F. Analog output signal G. Heater status H. Relay status (green indicates de-energized state for alarm and ACC, energized for fault; red indicates energized state for alarm and ACC, de-energized for fault). Emerson.com...

  • Page 15: Perform Manual Bit

    D. Device and software version Perform manual BIT Procedure Click the Built-In Test (BIT) button. Performing BIT sets field of view. If the detector is not mounted in its final position, BIT will need to be performed again. Rosemount 975...

  • Page 16: Assign Address To Device

    1. In the Address pane, select the Switch to Detector radio button. 2. Use the Address dropdown to select the required address. 3. Click the Switch button. Note Alternatively, the up and down arrows can be used to switch the address without clicking the Switch button. Emerson.com...

  • Page 17: Locating The Detector Address

    If the detector address is not shown in the top menu or is not communicating, its address can be located by clicking the Locate button within the Locate Detector Address pane. Once communication is established, the current detector address will be shown in the top menu. Status screen This screen displays the device status. Rosemount 975...

  • Page 18: Trend Screen

    B. Shows current internal temperature (in selected unit) C. Shows current 4-20 analog output (in mA) D. Activates manual BIT Trend screen This screen shows the input voltage, internal temperature, and analog output live trends according to the selected timeframe. Emerson.com...

  • Page 19: Recording Screen

    The timeframe settings can be adjusted by selecting the required values and clicking the Reset button. Recording screen This screen allows data from detector currently connected to be recorded and exported into a .txt or .xls file. 3.8.1 Record data Procedure 1. Select the required recording mode. Rosemount 975...
  • Page 20 The file location is in the Modbus directory installed on the computer in a file entitled “Recordings”. Rosemount 975 MR and HR file names are QuadIRlog_YMDHMS (Year, Month, Date, Hours, Minute, Second). Rosemount 975 UF and UR file names are prefaced with UVIRlog_YMDHMS (Year, Month, Date, Hours, Minute, Second).

  • Page 21: Detector Setup

    Accessory Relay Options, Detection Options, Lock Option, and 4-20 Settings can be changed. Note 4-20mA settings – for fault mode, the default indication is 1mA, but may be changed to ® 0mA. To preserve the HART communication, this is not recommended for customers using a HART connection. Rosemount 975...
  • Page 22 Default: Auto Alarm delay The delay between detection of a signal and activation of the alarm. Choose from 0, 3, 5, 10, 20, 30, or A (anti-flare). Default: A Heater power Choose from high or low power. Default: High power Emerson.com...
  • Page 23 Accessory relay as FOV When selected, the accessory relay is activated where FOV fault is detected. Default: Not enabled When selected, upon change of detector orientation, the Field of view (FOV) integrity detector will indicate fault. Default: Not enabled Rosemount 975...
  • Page 24 Once completed, only share the relevant password in accordance with internal policy. Table 3-1: Permission Types Action Permissions Maintenance Admin Reset detector Change password Authorized personnel only Manual BIT Detector setup Firmware update Fix 4-20 scale values Parameter download/upload Emerson.com...
  • Page 25 The Modbus Manager Settings screen is used to change COM port and the units throughout the software. Comport Use this section to change the COM port as described in Establish the COM port. Units Use this section to change the units (i.e. metric or imperial) in which all measurements are displayed. Rosemount 975...
  • Page 26 Operation Reference Manual June 2021 00809-1500-4975 Note The application must be restarted for changes to take effect. Emerson.com...

  • Page 27: Chapter 4 Maintenance

    1. Save file to your computer. 2. Switch to the required baud rate. 3. Click the Firmware update button. 4. Follow on-screen instructions to complete the process. Parameter update There is an optional feature to upload device parameters file with extension .upm. Rosemount 975...

  • Page 28: Set Fixed Current 4-20 Values

    9. Click the Apply button. 10. Repeat steps Step 8 Step 9 until you enter value within 20mA ±0.5. Important It is essential to enter the final value and click Apply. 11. Click the Burn button to save the changes. Emerson.com...

  • Page 29: Parameter Download

    Where required, this file will be provided by the manufacturer. Version information Detector information and the software version can be viewed on this screen. Service functions This screen provides access to various service functions. Rosemount 975...
  • Page 30 Maintenance Reference Manual June 2021 00809-1500-4975 A. Enter one-time password received from the manufacturer to enter tech-mode B. Enter one-time password received from the manufacturer to reset password Emerson.com...

  • Page 31: Appendix A Reference Data

    3. Scroll down to Documents and Drawings. 4. Select DATA SHEETS & BULLETINS 5. Select the appropriate Product Data Sheet. Product certifications and installation drawings To view current Rosemount 975 Series product certifications and installation drawings, follow these steps: Procedure 1. Go to Emerson.com/en-us/catalog/flame-detectors 2.
  • Page 32 Auto/manual BIT failure – no blinking signal orange Sensor 4µ circuit Open Auto/manual BIT failure – no blinking signal orange Sensor 4.4µ Open Auto/manual BIT circuit failure – blinking no signal orange Wrong AFE Open Every 30msec offset blinking orange Emerson.com...
  • Page 33 Sensor 4.4 and 4 Open Every BIT short circuit blinking orange Sensor 4.5 and 5 Open Every BIT short circuit blinking orange Normal Close Every 30msec blinking green Constant Close Every 30msec external BIT blinking orange Rosemount 975...
  • Page 34 Analog output Close Every 30msec failure blinking orange FOV warning Close Every 30msec blinking green Automatic BIT Close Every BIT blinking green Manual BIT Close Every BIT blinking green End of BIT Close Every BIT blinking green Emerson.com...
  • Page 35 The detector turns to V81, V82 after two minutes. The detector turns to V83 after 50 seconds. Unless in Setup table define constant red. 4mA if from state "N', 16mA if from state "T". Rosemount 975 UF and UR Models Status Description 4-20mA...
  • Page 36 IR sensor failure Open Auto/manual BIT – no signal blinking orange IR circuit Open Every 30msec shortcut failure blinking orange IR signal Amp Open Auto/manual BIT stuck at one blinking failure orange Constant IR Open Every 30msec signal blinking orange Emerson.com...
  • Page 37 Every 30msec failure blinking orange Alarm relay Open Every 30msec failure blinking orange Heater failure Close Every 30msec blinking orange IR or UV BIT Open Every BIT failure blinking orange Lamp BIT failure Open Every BIT blinking orange Rosemount 975...
  • Page 38 Close Every 30msec gradient blinking green Alarm delay 16mA Close Every 30msec blinking red Warning 16mA Close Every 30msec blinking red Alarm 20mA Close Constant Every 30msec Latch 20mA Close Constant Every 30msec Benzene Close Every 30msec blinking green Emerson.com...
  • Page 39 Reference Manual Reference data 00809-1500-4975 June 2021 Status Description 4-20mA Analog Fault Test rate output output relay indicator Anti-flare Close Every 30msec blinking green Explosion 20mA Close Constant Every 0.23msec Rosemount 975...
  • Page 40 2021 Emerson. All rights reserved. Emerson Terms and Conditions of Sale are available upon request. The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a mark of one of the Emerson family of companies. All other marks are the property...

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