Oldham MX 32 User manual

User Manual
MX 32v2
Analog and Digital
Controller
Part Number: NP32V2EN
Revision: C.0
The Fixed Gas Detection Experts

II
MX 32v2
User Manual
Copyright January 2018 by Oldham S.A.S.
All rights reserved. The reproduction of all or any section of this document in
any form whatsoever without the written permission of Oldham S.A.S. is
forbidden.
The information contained in this manual is accurate to our knowledge.
As a result of continuous research and development, the specifications of this
product may be modified at any time without prior notice.
Oldham S.A.S.
Rue Orfila
Z.I. Est –CS 20417
62027 ARRAS Cedex
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: https://gasdetection.3M.com

Table of Contents
iii
Tableofcontents
Chapter 1 │General Information ....................................................... 1
User Manual ...................................................................................................1
Symbols used.................................................................................................1
Safety Instructions..........................................................................................2
Important Information .....................................................................................2
Liability Limits.................................................................................................2
Warranty.........................................................................................................2
Chapter 2 │General Introduction...................................................... 3
Purpose of the MX 32 controller .....................................................................3
The different Versions ....................................................................................5
Firmplate ........................................................................................................6
The COM 32 Software....................................................................................6
Chapter 3 Mechanical Installation .................................................... 7
MX 32 Controller.............................................................................................7
Gas detectors.................................................................................................8
Digital Modules...............................................................................................8
Chapter 4 │The MX 32 Controller ..................................................... 9
Overview of the Unit .......................................................................................9
Front Plate....................................................................................................12
Alarm Thresholds and Relays.......................................................................15
Firmplate ......................................................................................................16
Chapter 5 │Digital Modules .............................................................17
Addressable Digital Modules ........................................................................17
RS485 Transmission ....................................................................................18
Communication Setup ..................................................................................18
Relay modules..............................................................................................20
16-Logic Input Module ..................................................................................22
8-Analog Input Module..................................................................................23
4-Analog Output Module...............................................................................25
Chapter 6 │Wiring and Electrical Connections...............................27
Controller Connection...................................................................................27

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MX 32v2
User Manual
4- or 8-Relay Modules ..................................................................................30
16-Logic Input Module..................................................................................31
8-Analog Input Module..................................................................................31
4 Analog Output Module...............................................................................32
Chapter 7 │Menus............................................................................33
General Menu Tree ......................................................................................33
Navigation Key Functions.............................................................................33
Display in normal mode................................................................................34
Main Menu....................................................................................................35
1. System .....................................................................................................35
2. Program....................................................................................................36
3. Calibration ................................................................................................36
4. Maintenance.............................................................................................40
5. Information ...............................................................................................41
Chapter 8 │Main Part Numbers .......................................................45
Chapter 9 │Cleaning and maintenance ...........................................47
Cleaning .......................................................................................................47
Fuse replacement.........................................................................................47
Replacement of the lithium battery ...............................................................47
Chapter 10│Certificate of Compliance .............................................49
Chapter 11│Technical Specifications ..............................................51
MX 32 Controller...........................................................................................51
Relay Module................................................................................................53
16-Logic Input Module..................................................................................53
8-Analog Input Module..................................................................................54
4-Analog Output Module...............................................................................54
Chapter 12| RS485 Digital Output.....................................................55
Card description ...........................................................................................55
Transfer Table..............................................................................................56
Address Table ..............................................................................................57
Chapter 13│ Specific conditions of use and Functional Safety ......63
Reliability data..............................................................................................63
Specific Conditions of Use............................................................................63
Specific instructions for the prevention of explosions according to ATEX
2014/34/EU European Directive ...................................................................64
Connecting detectors other than Oldham detectors to the MX 32 controller.65

1 –General Information
1
Chapter 1 │General Information
User Manual
The instructions given in this manual must be read thoroughly before
installation and start-up, particularly those concerning the points related to the
safety of the end-user. This user manual must be made available to every
person involved in the activation, use, maintenance, and repair of the unit.
The information, technical data, and diagrams contained in this manual are
based on the information that is available at a given time. In case of doubt,
contact Oldham for additional information.
The aim of this manual is to supply simple and accurate information to the
user. Oldham cannot be held liable for any misinterpretations in the reading of
this manual. In spite of our efforts to produce an error-free manual, it may
nonetheless contain some unintentional technical inaccuracies.
In the client’s interest, Oldham reserves the right to modify the technical
characteristics of its equipment to increase their performance without prior
notice.
The present instructions and their content are the inalienable property of
Oldham.
Symbols used
Icon
Significance
This symbol indicates useful additional information.
This symbol indicates:
Earth ground connection.
This symbol denotes:
Protective earth terminal. A cable of the adequate diameter must
be connected to ground and to the terminal having this symbol.
This symbol denotes:
Attention! In the present mode of use, failure to adhere to
the instructions preceded by this symbol can result in a risk
of electric shock and/or death.
This symbol indicates:
You must refer to the instructions.

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MX 32v2
User Manual
European Union (and EEA) only. This symbol indicates that this
product must not be discarded with household waste, as per the
EEA directive (2002/96/EC) and your own national regulations.
This product must be disposed of at a collection point that is
reserved for this purpose, for example, an official site for the
collection of electrical and electronic equipment (EEE) in view of
their recycling, or a point of exchange for authorized products
that is accessible when you acquire a new product of the same
type.
Safety Instructions
Labels intended to remind you of the principal precautions of use have been
placed on the unit in the form of pictograms. These labels are considered an
integral part of the unit. If a label falls off or becomes illegible, please ensure it
is replaced. The significance of the labels is detailed below.
The installation and electrical connections must be carried out by
qualified personnel according to the instructions of the
manufacturer and the standards of the competent authorities.
Failure to adhere to the instructions can have serious
consequences on the safety of persons. Please be extremely
rigorous as regards electricity and assembly (coupling, network
connections).
Cables with an operating temperature of 70°C minimum (158 °F)
must be used because the temperature inside the controller can
reach 70°C (158 °F).
Important Information
The modification of the material and the use of parts of an unspecified origin
shall entail the cancellation of any form of warranty.
The use of the unit has been projected for the applications specified in the
technical characteristics. Exceeding the indicated values cannot in any case
be authorized.
Liability Limits
Neither Oldham nor any other associated company under any circumstances
can be held liable for any damage, including, without limitations, damages for
loss or interruption of manufacture, loss of information, defect of the MX 32
controller, injuries, loss of time, financial or material loss, or any direct or
indirect consequence of loss occurring in the context of the use or
impossibility of use of the product, even in the event that Oldham has been
informed of such damage.
Warranty
Under normal conditions of use and on return to the factory, parts and
workmanship carry a two year warranty, excluding consumables such as
backup power supplies, audio and visible alarms, etc.

2 –General introduction
3
Chapter 2 │General Introduction
Purpose of the MX 32 controller
This controller is intended for the continuous measurement and control of the
gases present in the atmosphere.
MX 32
8 relay output modules and 4
4-20mA output modules
Figure 1: MX 32 and examples of the modules
The system primarily comprises:
■a MX 32 (1 or 2 lines),
■different modules (analog or digital detectors, logic inputs, analog inputs,
relay outputs, and analog outputs).
The MX 32 instantly handles the measurements of detectors and input
modules. As soon as the measurements reach the configured thresholds, the
internal buzzer and the LED indicators go off. At the same time, the
corresponding relays are activated to drive the additional actions programmed
by the user.
The MX 32 controller is programmed by using the COM 32 configuration
software.
Figure 2 presents a configuration example.

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MX 32v2
User Manual
Figure 2: Example of an MX 32 configuration using different analog and digital detectors
as well as digital modules
MX 32
Configuring PC with the
COM 32 application
Digital detectors
2 logic
inputs
Analog recorders
Four 4-20mA Analog
Output Module
8 Relay Output Module
Logic Input Module
4 Relay Output
Module
16 logic
inputs
Analog inputs
External
power supply
USB
link
8 Analog Input Module

2 –General introduction
5
The different Versions
The MX 32 controller is available in 3 versions:
■1 line,
■2 lines,
■Bridge Version (2 channels) for direct monitoring of Wheatstone bridge
flammable gas detectors.
Figure 3: MX 32
The following table details the different possible configurations depending on
the controller’s version. On each line, it is possible to connect 4-20mA analog
detectors or digital addressable modules.
Maximum Capacity
Version
Detectors
Analog Input
Modules
Relay Output
Modules
Logic Input
Modules
Analog
Output
Modules
1 line
4
1
2
1
1
2 lines
8
2
4
2
2
Wheatstone Bridge
2(1)
0
0
0
0
(1) OLC 10, OLC 10Twin or OLC 100 flammable gas detectors
Maximum Capacity
Version
External Relays
Logic Inputs
Analog Outputs
1 line
8
16
4
2 lines
16
16
8
Wheatstone Bridge
0
0
0
Table 1: Summary of the maximum capacity as per the controller type

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MX 32v2
User Manual
Firmplate
It contains relevant information with respect to the controller version (CSA or
ATEX variants).
Tag.
Description
1.
Product Name
2.
Part Number
3.
CSA mark
4.
CE marking with identification of the Notified Body that assessed the OLDHAM
manufacturing quality system (0080 - INERIS)
5.
ATEX marking (Performance requirements of gas detection systems for flammable
gases)
6.
Serial Number. The first two digits (in this case 17) correspond to the year of
manufacture (in this case 2017).
7.
Variant (1 or 2 lines to work with 4-20mA analog detector or Oldham digital detector,
or 2 channels to work with Wheatstone bridge gas detectors). In this example,
version ‘Wheatstone Bridge’.
8.
Power supply type (24Vdc or 100-240Vac). In this example, 24Vdc type.
9.
Name and mail address of the Manufacturer
10.
Warnings
The COM 32 Software
This is intended for setting the MX 32 parameters from a Windows®operated
PC. The operation and use of this application is covered in a special training
course.
10
9
8
7
171204Y-693
4
5
6
1
2
3