Oldham MX 43 User manual

User Manual
MX 43
Analog and Digital
Controller
Part Number: NPM43GB
Revision: H.1
The Fixed Gas Detection Experts

Table of contents
II
Copyright 2013 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: http://www.oldhamgas.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
Chapter 2 │General Introduction....................................................3
Purpose of the MX 43 controller .................................................................. 3
The MX 43 Controller .................................................................................. 5
The COM 43 Application.............................................................................. 5
Chapter 3 │Mechanical Installation................................................7
MX 43 Controller.......................................................................................... 7
Digital Modules............................................................................................ 9
Chapter 4 │The MX 43 Controller ................................................11
Overview of the Unit .................................................................................. 11
Front Plate................................................................................................. 15
Alarm and Relay Thresholds ..................................................................... 18
Firmplate ................................................................................................... 20
USB Key Operation ................................................................................... 20
Chapter 5 │Digital Modules ..........................................................23
Addressable Digital Modules ..................................................................... 23
RS485 Transmission ................................................................................. 24
Configuration of Communication................................................................ 24
Relay modules........................................................................................... 26
16-Logic Input Module ............................................................................... 28
8-Analog Input Module............................................................................... 29
4-Analog Output Module............................................................................ 31

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MX 43
User Manual
Chapter 6 │Wiring and Electrical Connections............................33
Controller Connection................................................................................ 33
4- or 8-Relay Modules ............................................................................... 38
16-Logic Input Module ............................................................................... 38
8-Analog Input Module............................................................................... 39
4-Analog Output Module............................................................................ 40
Chapter 7 │Menus.........................................................................41
General Menu Tree ................................................................................... 41
Navigation Key Functions.......................................................................... 41
Display in normal mode............................................................................. 42
Main Menu................................................................................................. 43
1. System .................................................................................................. 44
2. Program................................................................................................. 45
3. Calibration ............................................................................................. 45
4. Maintenance.......................................................................................... 48
5. Information ............................................................................................ 49
6. USB Key................................................................................................ 52
Chapter 8 │Main Part Numbers ....................................................55
Chapter 9 │Certificate of Compliance ..........................................57
Chapter 10│Technical Specifications ...........................................63
MX 43 Controller........................................................................................ 63
Relay Module............................................................................................. 65
16-Logic Input Module ............................................................................... 66
8-Analog Input Module............................................................................... 66
4-Analog Output Module............................................................................ 67
Chapter 11| RS485 Digital Output..................................................69
Card description ........................................................................................ 69
Transfer Table........................................................................................... 70
Address Table ........................................................................................... 71

1 –General Introduction
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:
This equipment must be connected to ground.
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 43
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.
Any deviation as regards these recommendations for the disposal
of this type of waste can have negative effects on the environment
and public health, as these electric and electronic products
generally contain substances that can be dangerous. Your full
cooperation in the proper disposal of this product promotes a
better use of natural resources.
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).
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 43
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.

1 –General Introduction
3
Chapter 2 │General Introduction
Purpose of the MX 43 controller
This controller is intended for the continuous measurement and control of the
gases present in the atmosphere.
Wall-mounted MX 43
Rack-mounted MX 43
8-relay modules and 4 4-20
mA output modules
Figure 1: Wall-mounted MX 43 and examples of the modules.
The system primarily comprises:
■a wall-mounted MX 43 (4 or 8 lines) or rack-mounted MX 43 (8 lines);
■different modules (detector with digital or analog output, logic inputs,
analog inputs, relay outputs, and analog outputs).
The MX 43 instantly handles the measurements of detectors and input
modules. As soon as the measurements reach the programmed limit, a sound
and visual alarm are given. At the same time, the corresponding relay or
relays are activated, in turn controlling the additional internal or external
actions envisaged by the user.
The MX 43 controller is programmed by using the COM 43 application.
Figure 2 presents a configuration example.

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MX 43
User Manual
Figure 2: Example of an MX 43 configuration using different analog and digital detectors
as well as digital modules.
MX 43
Configuring PC with the
COM 43 application
Analog
detectors
Digital detectors
2 logic
inputs
Analog recorders
Module
4 * 4-20 mA outputs
Module 8 relays
Module
logic input
Module 4 relays
16 logic
inputs
8 analog
inputs
External
power supply
USB
link

2 –General Introduction
5
The MX 43 Controller
Versions
The MX 43 controller is available in 3 versions:
■Wall-mounted version 4 lines.
■Wall-mounted version 8 lines.
■Rack-mounted version 8 lines.
Figure 3: Wall-mounted version MX 43 (left illustration) or rack- mounted version (right
illustration).
The following table details the different configurations that are possible,
depending on the type of unit. On each line, it is possible to connect a 4-20mA
analog detector or one, or several, digitally addressable modules.
Maximum number of
Versions
Modules (1)
Detectors
External
relays
Logic inputs
Analog
ouputs
4 lines
16
16
8
16
16
8 lines
32
32
24
32
32
(1) Gas detectors, 4 or 8-analog output modules, and 16-logic input modules.
Table 1: Summary of the maximum capacity as per the controller type.
The COM 43 Application
This is intended for setting the MX 43 parameters from a Windows®-operated
PC. The operation and use of this application is covered in a special training
course.

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MX 43
User Manual

3 - Mechanical Installation
7
Chapter 3 │Mechanical Installation
This chapter details the mechanical installation of MX 43 and the digital
modules.
MX 43 Controller
Location
The MX 43 shall be installed in premises without explosive atmospheres,
away from direct exposure to sunlight, and protected from humidity, dust, and
temperature variations. It shall preferably be located in a monitored
environment (guardhouse, control room, or instrument room, for example).
Attachment of the wall enclosure
Access to the controller must be ensured in the front in order to facilitate
adjustments, monitoring, and cabling. A space of 400 mm is necessary in front
of the MX 43 for opening the door.
(*) rear fixing legs included.
Figure 4: Size of the wall-mounted version.

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MX 43
User Manual
Use 2 fixing screws 4x25 mm for fixing the case support.
Figure 5: Fixing of the wall- mounted version MX 43 with a support plate.
Setting-up of a 19”Rack –4 U
Access to the unit must be ensured in order to facilitate adjustments and
monitoring, and likewise in the back in order to allow easy access to the
different connectors at the rear.
This rack is built into a bay or a standard 19” cabinet. You should leave ½ U
(22 mm) of space above and below the rack so as to assure the proper
ventilation of the MX 43.
Figure 6: Size of the rack-mounted version.

3 –Mechanical installation
9
Digital Modules
The cabling is the subject of the paragraph Wiring and Electrical
Connections on page 33.
Gas detectors
Refer to the manual supplied with each detector.
Location
Each detector shall be positioned at ground level, on the ceiling, at the height
of the respiratory tract, or near air extraction ducts, depending on the density
of the gas to be detected or applied. Heavy gases are detected close to the
ground, while lighter gases are present along the ceiling. If necessary, contact
Oldham for any questions regarding proper detector positioning.
Fixing
The detectors shall preferably be positioned in an accessible place so that
inspections and maintenance can be carried out as well as to ensure the
absolute safety of the operators. The detectors must not be obstructed by
anything that will prevent them from measuring the ambient environment to be
checked.
If mounting an OLCT 10N on a vertical surface, position the cable gland
downwards.
Other models
Location
The relay modules, logic outputs, analog outputs, and analog inputs are
positioned depending on the installation layout, mandatorily in places free
from explosive atmospheres, protected from humidity, dust, and temperature
variations; for example in technical cabinets.
Fixing
These modules shall be mounted on
a DIN rail in a cabinet or in an
electrical cabinet.
For relay modules connected to low
voltage electrical parts, the
installation is carried out according to
the standards in force.
Figure 7: Fixing of a module (relay, logic
outputs, or analog outputs or inputs) on a
DIN rail.

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MX 43
User Manual

4 –The MX 43 Controller
11
Chapter 4 │ The MX 43 Controller
Overview of the Unit
External view
Rep.
Function
Rep.
Function
A.
Monochromatic, back-lit graphic
LCD display
H.
Failure/maintenance indicator
B.
Zone 1 status indicator
J.
Contextual soft keys
C.
Zone 2 status indicator
K.
Alarm release key
D.
Integrated siren (option)
L.
Free identification of zones
E.
Integrated flash (optional)
M.
Strip for locating zones
F.
Lock
N.
Handle
G.
Start/Stop indicator
Figure 8: External view of the wall-mounted and rack-mounted versions.

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MX 43
User Manual
Internal view
Figure 9: Internal view of the wall-mounted version (top) and rack- mounted version
(bottom).
Rep.
Function
A.
LED digital communication status indicators. The information displayed by each red-green
diode pair of a line is interpreted as follows:
LED Status
Significance
Red
Green
Fast blinking
Fast blinking
Normal functioning of the line
- Tx communication request
- Rx: response of digital module(s).
Irregular
blinking
Irregular
blinking
Bad communication quality with at least one module.
Blinks 1X/sec
Off
Communication failure. Absence or failure of line
modules. A communication failure is signaled by the
activation of the internal buzzer, the presence of the
orange failure indicator and via the default relay.
Off
Off
No digital module active on the line.
B.
Optional 24 VDX NiMH battery pack.

4 –The MX 43 Controller
13
Rep.
Function
C.
Terminal block for the analog card power supply.
D.
Connector for the direct current external supply.
E.
Battery fuse (4A) and external power supply (21 to 28 VDC, 3.2 to 4 A max.).
F.
Connector for
- Internal siren 24 VDC –19mA max. Sounder+ and Sounder- terminals
- Internal flash 24 VDC –40 mA max. Flash+ and Flash-terminals
G.
Relays of alarms, from high to low Failure, R5, R4, R3, R2, R1.
- Failure: Non-configurable failure relay
- R1 to R5: Configurable alarm relays
- Corresponding LED indicator: Lit when relay is under voltage.
Configuration of Alarm Thresholds
The alarm thresholds for relays R1 to R5 can only be configured using the COM 43
software. The silkscreen image displays relays off line.
Relays R1 to R5 can be configured in either positive or negative security mode. COM 43
programming in:
- Normal mode: Operation of the relay as per the normal alarm management (the relay is
released only if the event exceeds the duration of the time delay).
- Buzzer mode: The same as in normal operation, with, in addition, the possibility of
releasing the buzzer relay even if the event is still present. The time delays are:
. Duration of maintenance: Minimum time of activation, adjustable from 0 to 900
seconds.
. Automatic release: Time adjustable between 15 and 900 seconds, beyond which the
buzzer relay is automatically released.
. Reactivation: Time adjustable between 15 and 900 seconds, beyond which the buzzer
relay is reactivated.
Alarm Relay Controls
- Logic equations of up to 4 levels of parentheses by the logic operators OR, AND, NOR,
NAND. The result of the equation controls the relay.
- Polling Operations (x over y): There must be at least “x”events over the total of “y” to
activate the relay. Optionally, the user may define whether a failure is considered an
event in the same category as an alarm.
H.
Alarm relay terminal block. CRT contacts, 250 V AC –2A or 30 V DC –2 A.
J.
Integrated siren (optional).
K.
Power supply sector block.
L.
Integrated flash (optional).
M.
Microcontroller PCB.
N.
Area of 12 + 6 cable glands (connections towards the exterior).
P.
Ground rod and bundle of shielded cables for digital and analog connections.
Q.
Terminal block for lines 1 to 8 (or 1 to 4 as per version). Refer to the Digital lines
paragraph on page 35.
R.
Connector for the connection of a remote release (dry contact NO.)
S.
Power supply sector input.
T.
Protective secondary ground connection.
U.
USB programming port.
V.
Programming switch.

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MX 43
User Manual
Rep.
Function
W.
CR2032 lithium battery.
X.
RS485 Digital Output Module. See Chapter 11.
Microprocessor card view
Figure 10: internal view, wall-mounted and rack-mounted versions –microprocessor cards
and display.
Rep.
Function
A.
USB key connector.
B.
LCD graphic display card.
C.
USB programming port.
D.
Programming (or mode) selector.
0. MX 43 in normal operation.
1. Transferring configuration from a PC to the MX 43.
2. Transferring configuration from a USB key to the MX 43.
3. Updating the MX 43 internal software via PC.
4. Updating the MX 43 internal software via USB key.
Once the unit configuration or update is complete, always set the selector in
the "0" position.

4 –The MX 43 Controller
15
E.
CR2032 lithium battery. Safeguards the preservation of the records and real time clock
in case of total power failure. Autonomy of approx. 450 days with the power off. At each
battery change, power the MX 43.
F.
Microcontroller PCB.
G.
Regulating LCD contrast.
H.
Microcontroller zero reset button. Press this button to reset the controller.
J.
Optional USB key. Allows you to save MX 43 input (measurements, alarms, etc.) or to
transfer files from the USB key to the MX 43 (transferring configuration or updates to
the MX 43's onboard software). In order to avoid data loss, Oldham recommends using
keys offered through its own commercial services. A 4Go key can record approximately
18 months of information from an MX 43 comprised of 32 detectors with a sampling
frequency of 2 seconds and up to 100 events per day and per detector.
K.
USB collection module.
Front Plate
This has the following aspect:
Figure 11: Front plate of the MX 43 in wall-mounted and rack-mounted versions.
LCD
The display shows the measurements or the menus of the parameter setting,
and an inverse video display indicates that the module that is currently
displayed has an active alarm.
The details of the displays are the subject of the chapter Menus, on page 41.
Figure 12: Example of a measurement display (screen) or parameter setting display (menu
on the left).
Refer to the paragraph Display in normal mode on page 42 for information
about what may be displayed on the screen.

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MX 43
User Manual
Contextual Keys (B)
The function of each of the 5 keys indicated in the lower part of the display
changes depending on the page displayed.
Zone Status Indicators (C)
Eight bars of 7 indicators each are displayed on the controller.
The 4 bars to the right are not operative on a 4-line MX 43.
Each bar represents a geographic area of the complete installation
and not the 4 or 8 lines of the MX 43.
Each bar displays the status of the group of detectors of the pertinent zone as
follows:
Icon
Function

Orange indicator of high-range excess (OVS: overscale, high-range excess). This
value is adjustable up to 110% of the range.
- Off: The measurement is lower than the OVS value programmed.
- Lit: The measurement is higher than the OVS value programmed. The alarm
relays are activated in accordance with the program. In parallel, the display
indicates « > ».
OVS resetting is done manually and is only possible if the value measured drops
below the programmed value.
Management of “Clear doubt”
The Clear doubt alarm is only applicable to the detection of explosive gases in a
range of 0-100%LEL, and is subject to the decision of the operator. Upon the
detection of a concentration of gas higher than 100% LEL, the LCD indicates a
measurement blocked at 100% LEL and the message > 100% LEL. The message
Strong concentaration. Resetting by an authorized person in the maintenance
menu is displayed. The OVS and FAILURE indicators are activated. The alarm can
only be deactivated by stopping the detector via the maintenance menu once the
gas level decreases below this limit.
ALARM3
ALARM2
ALARM1
Red indicators of alarm status:
- Off: Measurement lower than the threshold defined.
- Solid light: at least one of the gas detectors is in alarm mode. Acknowledgment
is programmed in automatic mode or has already been requested through use of
the Alarm reset button on the front panel.
- Flashing light: at least one of the gas detectors is in alarm mode. Acknowledg-
ment is programmed in manual mode.
The alarm relays will be activated in accordance with the programming.

Orange indicator of low- range excess (UDS: Under scale, low-range excess). This
value is adjustable from 0-10% of the range.
- Off: The measurement is higher than the UDS value programmed.
- Lit: The measurement is lower than the UDS value programmed. The alarms of
the relays are activated in accordance with the programming. In parallel, the
display indicates « < ».
UDS resetting is automatic once the failure disappears.
FAULT
Orange failure indicator
- Off: No failing module or detector.
- Fixed light: Communication problem with one of the modules or invalid detector
measurement, that is to say either below -10% of the range or above 110% of