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Bacharach MGS-408 User Manual

Gas detection controller
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1100-2295 Rev 0
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Summary of Contents for Bacharach MGS-408

  • Page 1 1100-2295 Rev 0...
  • Page 2 Bacharach, Inc.’s reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given by buyer to Bacharach, Inc. within one (1) year after the date of delivery of this product by Bacharach, Inc.
  • Page 3 Bacharach, Inc. Copyright © 2019, Bacharach, Inc., All Rights Reserved. BACHARACH is a registered trademark of Bacharach, Inc. All other trademarks, trade names, service marks and logos referenced herein belong to their respective companies.

  • Page 4: Table Of Contents

    3.2 Preliminary Inspection 3.3 Suitable / Appropriate Locations 3.4 Mounting the Gas Detection Controller 3.5 Electrical Wiring 3.6 Communications Connections 3.6.1 MGS-408 Gas Detection Controller Network 3.6.2 Integration with Building Management System 3.7 Connecting External Alarms 3.7.1 Overview 3.7.2 Connection Procedure 4.
  • Page 5 4.2 Controller Setup 4.2.1 Setup Parameters 4.2.2 Relay Setup 4.2.3 AV Alarm 4.2.4 Fault Latching 4.2.5 Bluetooth 4.2.6 LCD Contrast 4.2.7 LED Brightness & Auto-dimming 4.2.8 Date/Time 4.2.9 Password Protection 4.2.10 Factory Reset 4.2.11 Update Firmware 4.3 Channel Summary and Setup 4.3.1 Channel Setup Overview 4.3.2 CHx MON (Monitor) 4.3.3 CHx TYP (Instrument Type)
  • Page 6 6.3.3 KEYPAD TEST 6.3.4 STROBE TEST 6.3.5 FAN TEST 7. Additional Information 7.1 Disposing of Instrument 7.2 Technical Specifications 8. Parts & Accessories 8.1 Part Numbers 8.1.1 MGS-408 Configurations 8.1.2 MGS-400 Series Accessories 8.2 Service Center Locations 1100-2295 Rev 0...

  • Page 7: Introduction

    1. Introduction 1.1 About this Manual Thank you for investing in a Bacharach MGS-408 Gas Detector Controller. To ensure operator safety and the proper use of the controller, please read the contents of this manual for important information on the operation and maintenance of the instrument.

  • Page 8: Iconography

    WARNING: Extreme care should be exercised when accessing the product’s interior. Only qualified electrical maintenance personnel should perform connections and adjustments. Always remove AC power before working inside the MGS-408’s enclosure. 1100-2295 Rev 0...

  • Page 9: Communication Options

    (2,000 m). Operation above this elevation may impair product performance. 1.4 Communication Options The MGS-408 Gas Detection Controller features full two-way communications via an RS-485 interface. MODBUS RTU is the communication protocol standard. The controller can be connected to a Building Management System or it may be operated as a stand-alone system with Bacharach’s gas monitors.

  • Page 10: Product Description

    Modbus slave device. This allows connection to a third-party device such as a Building Management System (BMS) or Programmable Logic Controller (PLC). Data logging is available on the MGS-408 via the integrated SD card, which can be removed to allow download of the logged data to a computer.

  • Page 11: Intended Use

    (classified) locations. 2.2 Intended Use The MGS-408 is intended to be used to provide audio-visual alerts and information on the status of a network of gas detectors in a centralized location. This allows clear at-a-glance visualization of any alarm or fault status on a connected gas detector in a location outside of the monitored space, as required by many regulatory codes and standards.

  • Page 12: Components

     Configurable output signal options 3× relays (universal: high alarm / low alarm / fault) o RS485 Modbus RTU Slave Data logging via SD card User interface:  LCD display screen  Integrated keypad 2.4 Components Component Description AC Power Terminal Block Power Supply Cooling Fan SD Card Slot...

  • Page 13: Installation

    3. Installation 3.1 Warnings & Cautions WARNING: Explosion hazard! Do not mount the MGS-408 Gas Detection Controller in an area that may contain flammable liquids, vapors or aerosols. Operation of any electrical equipment in such an environment constitutes a safety hazard.

  • Page 14: Preliminary Inspection

    Dirt, grease, and oils can adversely affect the operation of the MGS-408 Gas Detection Controller. The MGS-408 Gas Detection Controller should be installed out of direct sunlight in a clean, dry area that is not subject to temperature or humidity extremes. Installation in a mechanical room is acceptable provided reasonable environmental conditions exist.

  • Page 15: Mounting The Gas Detection Controller

    The MGS-408 Gas Detection Controller can be located up to 4500 feet (1372 m) from the furthest gas monitor when using RS485 communications. The available distance is less when using the controller as the power supply for downline gas transmitters. The total power available for gas detectors is 51W.

  • Page 16: Communications Connections

    (Belden 3106A or equivalent) The maximum distance between the furthest gas detector and MGS-408 Gas Detection Controller is 4500 feet (1372 m) when only using Modbus communications. The available distance is less when using the controller as the power supply for gas detectors.
  • Page 17 1100-2295 Rev 0...

  • Page 18: Integration With Building Management System

    The connection is established using a shielded twisted pair cable such as Belden 3106A. Use any of the remaining service cable glands to gain access to the interior of the MGS-408 Gas Detection Controller. Locate the RS‑ 485 upline connector. Secure the wire leads to the connector in the orientation as displayed on the board.

  • Page 19: Operation

    4.1 Overview 4.1.1 Main Function Every 5 seconds the MGS-408 Gas Detection Controller collects gas concentration and status information from each connected gas detector. Gas concentration appears on the LCD display and connection status, fault and alarm conditions are indicated by the LED matrix for each channel.

  • Page 20: Controller Setup

    Some of the screens you will access will require data entry, such as the date/time setup or location description. These screens will appear with a character selected, as displayed below. Use the up/down Arrow keys to scroll through the characters provided for that character’s place. Use the left/right Arrow keys to move the cursor to the next character.

  • Page 21: Av Alarm

    4.2.3 AV Alarm The beacon, if installed, and the internal buzzer may be enabled to indicate an alarm condition. When enabled, the beacon will be energized, and the buzzer will beep, if either a low or high alarm condition exists. 4.2.4 Fault Latching Fault latching defaults to DISABLED, allowing the fault indication to clear with the condition without user intervention.

  • Page 22: Bluetooth

    4.2.5 Bluetooth To use the Bacharach smart phone app, before connecting you must ENABLE Bluetooth from this menu screen. 4.2.6 LCD Contrast From the LCD contrast setting screen, use the arrow keys to adjust the contrast from 1-63, with 30 being the default.

  • Page 23: Password Protection

    4.2.9 Password Protection The MGS-408 Gas Detection Controller can be password protected to prevent the unauthorized editing of setup parameters. When password protection is enabled, an operator may still navigate between screens to observe settings or monitor network status. The unit is shipped with password protection OFF.

  • Page 24: Factory Reset

    4.2.10 Factory Reset Selecting FACTORY RESET will revert all user settings to their factory out of box defaults. A confirmation screen will ask the user to confirm their intent since user settings will be lost and you will need to re-configure each channel. For this reason record settings in each channel edit screen before performing a reset.

  • Page 25: Channel Summary And Setup

    4.3 Channel Summary and Setup Pressing a CHx key from the main screen will bring up a channel summary screen with detailed information collected from the gas detector assigned to that channel. 4.3.1 Channel Setup Overview Prior to setting channel parameters, the installer should verify and record the instrument type, node address and baud rate for each connected detector.

  • Page 26: Chx Mon (Monitor)

    4.3.2 CHx MON (Monitor) This parameter set to ON or OFF, enables or disables the monitoring of the gas detector assigned to that channel. When set to ON the controller will attempt to collect data, every 5 seconds, from the gas detector type and at the node address specified in the corresponding channel parameters.

  • Page 27: Sd Card Requirements

    Log data is buffered for 10 minutes before writing to the SD card, so it is important to use the ‘SD EJECT’ menu item before removing the SD card, this will write the contents of the buffer and turn off data logging, so the card is ready to be removed. Log data is divided into weekly files using the naming convention MGS408_LOG_WEEK_XXX_OF_YYYY.csv, where XXX is the week number (1-52) and YYYY is the year.

  • Page 28: Sd Eject

    4.4.3.1 SD EJECT Select this option just prior to removing the SD card. This will write any buffered log data to the card and turn off logging. Logging will automatically resume when the SD card is re-installed. 4.4.3.2 LOGGING (ON/OFF) Enable or disable data logging by setting this item to ON or OFF.

  • Page 29: Modbus

    MODBUS RTU protocol is utilized both for downstream detector communication and upstream BMS communication. Communication parameters may be set from the MODBUS CONFIG menu. The MGS-408 controller acts as a MODBUS master device on the detector side, and as a MODBUS slave device on the BMS side. 5.1.1 MASTR BAUD (XXXX) Slave devices (gas detectors) communicate with the master device (MGS4088 Controller) at this baud rate, either 9600(default) or 19200.

  • Page 30: Slave Term

    5.1.6 SLAVE TERM A 120 ohm termination resistor can be enabled on the BMS connection. This is typically only required for cable lengths in excess of 1000’, for shorter distances set this termination to OUT. 5.2 MODBUS Registers Register Func Code 04 Address (read input registers) Type...
  • Page 31 correct value (MGS550 only) Sensor 1 Gas Type Text Char 1,2 ASCII characters Sensor 1 30019 Sensor 1 Gas Type Text Char 3,4 ASCII characters Sensor 1 30020 Sensor 1 Gas Type Text Char 5,6 ASCII characters Sensor 1 30021 Sensor 1 Gas Type Text Char 7,8 ASCII characters Sensor 1...
  • Page 32 SENSOR 5 DATA GROUP (REPEAT OF SENSOR 1) Sensor 5 30201-30250 SENSOR 6 DATA GROUP (REPEAT OF SENSOR 1) Sensor 6 30251-30300 SENSOR 7 DATA GROUP (REPEAT OF SENSOR 1) Sensor 7 30301-30350 SENSOR 8 DATA GROUP (REPEAT OF SENSOR 1) Sensor 8 30351-30400 Sensor 1 Concentration...
  • Page 33 Future unused return zero always 40001 Controller-related RS-485 Node Address 1-254 40002 Controller-related Baud Rate 0=9600 1=19200 40003 Controller-related Stop Bits 1 or 2 40004 Controller-related Parity 0=none 1=odd 2=even 40005 Controller-related Controller UID Char 1,2 ASCII characters 40006 Controller-related Controller UID Char 3,4 ASCII characters 40007...
  • Page 34 32(future) 10033 Sensor 1 High Alarm Flag (0 or 1 = alarm) Sensor 1 10034 Sensor 2 High Alarm Flag (0 or 1 = alarm) Sensor 2 10035 Sensor 3 High Alarm Flag (0 or 1 = alarm) Sensor 3 10036 Sensor 4 High Alarm Flag (0 or 1 = alarm) Sensor 4...
  • Page 35 ON. When the test is completed 00005 the flag will turn OFF 00006 UNUSED 00007 UNUSED 00008 UNUSED Func Code 43/14 0x00 Vendor name "Bacharach" Controller-related 0x01 Product code "MGS-408" Controller-related 0x02 Major minor rev "NN.nn" Controller-related 1100-2295 Rev 0...

  • Page 36: Diagnostics And Troubleshooting

    6. Diagnostics and Troubleshooting 6.1 Diagnostic Menu From the diagnostic menu the user can review and clear current and historical faults, view power supply voltages, and watch live Modbus traffic for both master, slave and Bluetooth connections. The diagnostic menu appears on page 2 of the main menu. 6.1.1 CURRENT FAULT Displays the current active controller fault code along with a list of fault descriptors.

  • Page 37: Clear Last Fault

    6.1.4 CLEAR LAST FAULT Reset the historical last fault code to zero. Use to catch recurring intermittent fault conditions. 6.1.5 CLR LAST SD FAULT Resets the historical SD card fault code. Use to catch recurring intermittent fault conditions with the SD card or data logging. 6.1.6 POWER Displays live power supply voltages and chassis temperature.

  • Page 38: Fault Codes

    6.2 FAULT CODES Code Critical Fault Possible Causes Remedy 0001 CHASSIS Chassis Reduce ambient temperature or check for TEMP HI temperature outside power supply malfunction. the range of -20 to 60° 0002 RS485 Buffer overflow Disable all but one channel, use MODBUS MSTR BUFR communicating with MASTER traffic screen to one CH at a time.

  • Page 39: System Tests

    0400 CONFIG All detectors are Enable one or more channels, or check for ERROR disabled or there duplicate node address assignment. are duplicate node addresses 0800 SD CARD SD card interface is Select SD FAULT from DATA LOGGING ERROR reporting an error menu for details.

  • Page 40: Strobe Test

    6.3.4 STROBE TEST Manually toggle the strobe, if installed, using up and down arrow keys 6.3.5 FAN TEST Manually toggle the chassis cooling fan using the up and down arrow keys 1100-2295 Rev 0...

  • Page 41: Additional Information

    However, this device has not been registered for household usage. Therefore it must not be disposed of through these channels. The device can be returned to your national Bacharach Sales Organization for disposal. Contact Bacharach if you have any questions. 7.2 Technical Specifications...

  • Page 42: Parts & Accessories

    8.1.1 MGS-408 Configurations Part Number Description 6702-8000 MGS-408 gas detection controller, 8 channels 1100-2307 Optional horn/strobe, mounts directly onto MGS-408, red lens 1100-2308 Optional horn/strobe, mounts directly onto MGS-408, green lens 1100-2309 Optional horn/strobe, mounts directly onto MGS-408, blue lens 1100-2310 Optional horn/strobe, mounts directly onto MGS-408, yellow lens 8.1.2 MGS-400 Series Accessories...

  • Page 43: Service Center Locations

    Merchandise Authorization Number (RMA #). All returned goods must be accompanied by a RMA #. Pack the equipment securely (in its original packing, if possible), as Bacharach cannot be held responsible for any damage incurred during shipping to our facility.

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