Bacharach MGS-408 Manuel utilisateur
Fixed Gas Detection
P/N: 1100-2295 | February 2020 Revision 1
Gas Detection Controller
for Commercial & Industrial Applications
User
Manual
1100-2295 Rev 1
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MGS-408 User Manual
WARRANTY POLICY
Bacharach, Inc. warrants to buyer that at the time of delivery this product will be free from defects in material and
manufacture and will conform substantially to Bacharach, Inc.’s applicable specications. Bacharach’s liability and
buyer’s remedy under this warranty are limited to the repair or replacement, at Bacharach’s option, of this product or
parts thereof returned to seller at the factory of manufacture and shown to 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.
Bacharach, Inc. warrants to buyer that it will convey good title to this product. Bacharach’s liability and buyer’s remedy
under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach, to the
replacement of this product or parts thereof that are defective in title.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY AND ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT
OR TORT, WHETHER OR NOT ARISING FROM BACHARACH’S
NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the buyer shall be limited to those provided herein to the exclusion
of any and all other remedies including, without limitation incidental or consequential damages. No agreement varying
or extending the foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in writing,
signed by a duly authorized ocer of Bacharach.
Register Your Warranty by Visiting: www.mybacharach.com
SERVICE POLICY
Bacharach, Inc. maintains a service facility at the factory. Some Bacharach distributors / agents may also have repair
facilities; however, Bacharach assumes no liability for service performed by anyone other than Bacharach personnel.
Repairs are warranted for 90-days after date of shipment (sensors, pumps, lters and batteries have individual
warranties). Should your analyzer require non-warranty repair, you may contact the distributor from whom it was
purchased or you may contact Bacharach directly.
If Bacharach is to do the repair work, send the monitor, prepaid, to the closest service center. Prior to shipping equipment
to Bacharach, visit www.mybacharach.com for a Returned 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. Always include your RMA #, shipping
address, telephone number, contact name, billing information and a description of the defect as you perceive it. You will
be contacted with a cost estimate for expected repairs prior to the performance of any service work. For liability reasons,
Bacharach has a policy of performing all needed repairs to restore the monitor to full operating condition.
NOTICES
Product improvements and enhancements are on-going, therefore the specications and information contained in
this document may change without notice.
Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in connection
with the furnishing, performance, or use of this material.
No part of this document may be photocopied, reproduced, or translated to another language without the prior
written consent of Bacharach, Inc.
Copyright © 2020, 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.
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Table of Contents
Introduction .................................................. 1
1.1. About this Manual ..................................................................................................... 1
1.2. Conventions................................................................................................................ 1
1.2.1 Short Form Instructions...................................................................................................................... 1
1.2.2 Iconography......................................................................................................................................... 2
1.3. General Safety Statements....................................................................................... 2
Product Description...................................... 4
2.1. Product Overview ...................................................................................................... 4
2.2. Intended Use .............................................................................................................. 5
2.3. Design Features ......................................................................................................... 6
2.4. Components ............................................................................................................... 7
2.5. Communication Features ......................................................................................... 8
Installation .................................................... 9
3.1. Warnings & Cautions ................................................................................................. 9
3.2. Preliminary Inspection.............................................................................................. 9
3.3. Suitable / Appropriate Locations ............................................................................. 10
3.4. Mounting the Gas Detection Controller.................................................................. 10
3.5. Electrical Wiring ......................................................................................................... 11
3.6. Communications Connections ................................................................................. 12
3.6.1 MGS-408 Gas Detection Controller Network.................................................................................... 12
3.6.2 Integration with Building Management System .............................................................................. 13
3.7. Connecting External Alarms ..................................................................................... 14
3.7.1 Overview............................................................................................................................................... 14
3.7.2 Connection Procedure........................................................................................................................ 14
Operation...................................................... 15
4.1. Overview ..................................................................................................................... 15
4.1.1 Main Function...................................................................................................................................... 15
4.1.2 Power Up.............................................................................................................................................. 15
4.1.3 Channel Number Keys ........................................................................................................................ 15
4.1.4 Menu Access and Navigation............................................................................................................. 15
4.2. Controller Setup......................................................................................................... 16
4.2.1 Setup Parameters ............................................................................................................................... 17
4.2.2 Relay Setup .......................................................................................................................................... 17
4.2.3 Audible/Visual (AV) Alarm Beacon..................................................................................................... 18
4.2.4 Fault Latching...................................................................................................................................... 18
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4.2.5 LCD Contrast........................................................................................................................................ 19
4.2.6 LED Brightness & Auto-dimming ....................................................................................................... 19
4.2.7 Date/Time............................................................................................................................................. 20
4.2.8 Password Protection........................................................................................................................... 20
4.2.9 Factory Reset........................................................................................................................................ 21
4.2.10 Update Firmware ................................................................................................................................ 21
4.3. Channel Summary and Setup................................................................................... 22
4.3.1 Channel Setup Overview .................................................................................................................... 23
4.3.2 CH(X) MON (Monitor).......................................................................................................................... 23
4.3.3 CH(X) TYP (Instrument Type) .............................................................................................................. 24
4.3.4 CH(X) ADR (Node Address).................................................................................................................. 24
4.3.5 CH(X) LOC (Location)........................................................................................................................... 25
4.4. Data Logging............................................................................................................... 25
4.4.1 Data Logging Overview....................................................................................................................... 25
4.4.2 SD Card Requirements ....................................................................................................................... 25
4.4.3 Data Logging Menu............................................................................................................................. 25
MODBUS........................................................ 27
5.1. MODBUS Overview .................................................................................................... 27
5.1.1 MASTER BAUD RATE ............................................................................................................................ 27
5.1.2 SLAVE NODE ADDRESS ........................................................................................................................ 27
5.1.3 SLAVE BAUD RATE................................................................................................................................ 28
5.1.4 SLAVE PARITY ...................................................................................................................................... 28
5.1.5 SLAVE STOP BIT.................................................................................................................................... 28
5.1.6 SLAVE TERMINATION .......................................................................................................................... 28
5.2. MODBUS Registers..................................................................................................... 29
Diagnostics & Troubleshooting .................. 36
6.1. Diagnostic Menu ........................................................................................................ 36
6.1.1 DISPLAY CURRENT FAULT.................................................................................................................... 36
6.1.2 DISPLAY LAST FAULT............................................................................................................................ 37
6.1.3 CLEAR FAULT ........................................................................................................................................ 37
6.1.4 CLEAR LAST FAULT ............................................................................................................................... 37
6.1.5 CLEAR LAST SD FAULT ......................................................................................................................... 37
6.1.6 POWER.................................................................................................................................................. 37
6.1.7 MODBUS SLAVE ................................................................................................................................... 38
6.1.8 MODBUS MASTER................................................................................................................................ 38
6.2. FAULT CODES.............................................................................................................. 39
6.3. SYSTEM TESTS............................................................................................................. 40
6.3.1 RELAY TEST ........................................................................................................................................... 40
6.3.2 LED TEST............................................................................................................................................... 40
6.3.3 KEYPAD TEST ........................................................................................................................................ 40
6.3.4 STROBE TEST ........................................................................................................................................ 40
6.3.5 FAN TEST............................................................................................................................................... 40
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Additional Information ............................... 41
7.1. Disposing of Instrument ........................................................................................... 41
7.2. TechnicalSpecications............................................................................................ 41
Parts and Accessories.................................. 42
8.1. Part Numbers............................................................................................................. 42
8.2. Service Center Locations........................................................................................... 43
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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.
IMPORTANT: Before using this product, carefully read and strictly follow the
instructions in the manual. Ensure that all product documentation is retained
and available to anyone operating the instrument.
1.2. Conventions
1.2.1 Short Form Instructions
This document uses a short form for describing steps (e.g. executing a command).
Example:
Clearing the current fault.
Short Form Instructions:
Main Menu Diagnostics Clear Fault press OK to clear the current fault.
Steps Required:
1. Press “OK” to access the Main Menu.
2. Select “Diagnostics.”
3. Select “Clear Fault.”
4. When prompted, press “OK” to clear the current fault.
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1.2.2 Iconography
Alert Icon Description
DANGER Imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING Potentially hazardous situation which, if not avoided,
could result in death or serious injury.
WARNING Potential electrical shock hazard which, if not avoided,
could result in death or serious injury.
CAUTION
Potentially hazardous situation which, if not avoided,
could result in physical injury or damage to the product
or environment. It may also be used to alert against
unsafe practices.
IMPORTANT Additional information on how to use the product.
1.3. General Safety Statements
IMPORTANT: Before using this product, carefully read and strictly follow the
instructions in the manual. Ensure that all product documentation is retained
and available to anyone operating the instrument.
DANGER: This instrument is neither certied nor approved for operation in
oxygen-enriched atmospheres. Failure to comply may result in personal injury
or death.
WARNING: Under no circumstances should this product be operated without
connection to a protective ground. Failure to comply may result in a potential
shock hazard and is a violation of electrical safety standards applicable to this
category of equipment.
WARNING: Always remove AC power before working inside the MGS-408
enclosure and exercise extreme care when accessing the products interior.
Only qualied electrical maintenance personnel should perform connections
and adjustments.
WARNING: DO NOT use soap and water or other detergents to clean the
outside of this product; use a DRY CLOTH only. Failure to comply may result in
a potential shock hazard.
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CAUTION: The protection provided by this product may become impaired if
it is used in a manner not specied by the manufacturer. Modications to this
instrument, not expressly approved, will void the warranty.
CAUTION: In case of malfunction, DO NOT continue to use this equipment
if there are any symptoms of malfunction or failure. In the case of such
occurrence, de-energize the power supply and contact a qualied repair
technician or the nearest Bacharach Service Center.
CAUTION: Use ONLY the provided cable glands for electrical and
communication wiring. Drilling into the box will void the warranty.
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2. Product Description
2.1. Product Overview
The MGS-408 Gas Detection Controller displays comprehensive and centralized
information about the status of all connected gas detectors. A maximum of eight
Bacharach gas detectors can be connected to the MGS-408 via Modbus RTU.
Compatible gas detectors are:
• MGS-410 • MGS-250
• MGS-450 • MGS-550
• MGS-460
The MGS-408 can be used to provide power to each connected, compatible gas detector,
negating the need for separate power supply at the location of the gas detector.
The MGS-408 displays status via an LCD screen and a bank of LEDs that represent
the channel / sensor connected to it. Each channel / sensor has a row of dedicated
LEDs to indicate the status of the sensor:
• Power • Low alarm
• High alarm • Fault
The LCD screen will display the current gas reading and gas type for the selected
channel, or will indicate fault and/or alarm status. The LCD screen is also used for
conguration of the MGS-408 via the integrated keypad.
In addition to the LED alarm status, the MGS-408 includes an integrated audible
alarm. An optional beacon can be installed, mounted in the top of the enclosure, to
enhance local alarm indication.
The MGS-408 provides relays (indicating any high alarm, low alarm or fault status) and
can act as a 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. The data will include
a date stamp of all high and low alarms as well as all faults.
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Figure 2-1 - MGS-408 Gas Detection Controller with Optional External Beacon
WARNING: This instrument is neither certied nor approved for operation in
oxygen-enriched atmospheres. Failure to comply may result in EXPLOSION.
WARNING: For your safety, DO NOT use this instrument in locations classied
as hazardous because it has not been designed to be intrinsically safe for use
in such areas.
2.2. Intended Use
The MGS-408 provides audio-visual alerts and information pertaining to the status
of a centralized gas detector network. This information allows concise, at-a-glance
notication of any alarm or fault status regarding a connected gas detector located
outside the monitored space, as required by many regulatory codes and standards.
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