Oldham MX 32 User manual

Installation and
Operating Manual
MX 32
2 CHANNEL
CONTROLLER
SINGLE CHANNEL
Reference: NPM32GB
Revision: B.1
The Fixed Gas Detection Experts

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MX 32
Instruction Manual
Copyright 2013 by Oldham
All rights reserved. Reproduction in any form, in whole or in part, without the
express written consent of Oldham is strictly prohibited.
The information contained within this manual is true and correct to the best of
our knowledge.
Due to ongoing research and development, the specifications of this product
may be changed at any time without notice.
Oldham
Rue Orfila
Z.I. Est –CS 20417
F –62027 ARRAS Cedex
Phone: [phone]
Fax: [phone]

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MX 32
Instruction Manual
TableofContents
Chapter 1 │General Information ...................................................1
The User’s Guide......................................................................................... 1
Symbols used.............................................................................................. 1
Safety Warnings .......................................................................................... 2
Important Information .................................................................................. 2
Limitation of liability ..................................................................................... 2
Chapter 2 │General Introduction..................................................3
Subject ........................................................................................................ 3
View: Front internal...................................................................................... 3
View: Front .................................................................................................. 4
LCD Information .......................................................................................... 5
View: Internal............................................................................................... 5
Chapter 3 │ Installation and wiring ..............................................7
Mounting the controller ................................................................................ 7
Wiring.......................................................................................................... 8
Chapter 4 │Operating instructions .............................................13
Displays..................................................................................................... 13
Navigating the menus................................................................................ 16
PRG Menu (Programming) ........................................................................ 18
INI Menu (Initialization).............................................................................. 23
Cal Menu (Calibration)............................................................................... 25
Cod Menu (Access code) .......................................................................... 30
Buz Menu (Buzzer).................................................................................... 31
Chapter 5 │Cleaning, servicing and maintenance .....................33
Cleaning .................................................................................................... 33
Maintenance and servicing........................................................................ 33
Fuse replacement...................................................................................... 34

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MX 32
Instruction Manual
Parts.......................................................................................................... 34
Chapter 6 │Technical specifications..........................................35
Chapter 7 │Technical specifications..........................................37
Chapter 8 │ Particular Specifications.........................................39
Specifications for mechanical
and electrical installations in Explosive Zones........................................... 39
Metrological specifications......................................................................... 39
Connecting detectors other than
Oldham detectors to the MX 32 controller ................................................. 40
Markings:................................................................................................... 41

1 –General Information
1
Chapter 1 │General Information
The User’s Guide
Please read the following notice carefully before installation and start-up,
paying particular attention to the end-user safety instructions. This user’s
guide should be distributed to every individual involved in the start-up, use,
maintenance or repair of the system. The information contained in this
manual, the data and technical drawings are correct as of the date of
publication. Should questions arise, please contact Oldham for additional
information.
This manual is designed to provide users with simple and precise information.
Oldham shall not be held responsible or liable for any misinterpretation that
may result from the reading of this manual. Although every effort is made to
ensure accuracy, this manual may contain unintentional technical
inaccuracies.
On behalf of its clients, Oldham reserves the right to modify the technical
characteristics of its equipment, without notice, to improve product
performance. This user manual and its contents are the inalienable property of
Oldham.
Symbols used
Icon
Meaning
This symbol indicates useful additional information.
This symbol indicates:
This equipment must be grounded.
This symbol indicates:
Safety grounding terminal. A cable of adequate diameter must
ground any terminal with this signal.
This symbol indicates:
Caution: In the current operating mode, failure to adhere to
the instructions preceding this symbol can result in a risk of
electric shock or death.
This symbol indicates:
Please refer to the instructions.
Double isolation.

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MX 32
Instruction Manual
European Union (and EEA) only. This icon indicates that in
accordance with Directive DEEE (2002/96/EC) and with the
regulations of your country, this product may not be disposed with
household waste.
Dispose of this product at a collection site intended for electrical
waste, for example an official EEE (Electrical and Electronic
Equipment) collection site with a recycling or take-back program
for authorized products available to consumers whose purchases
replace old EEE products with new equivalents.
Failure to comply with regulations for the disposal of this type of
waste can be harmful to the environment and to public health, as
EEE products typically contain potentially hazardous substances.
Your complete cooperation in the disposal of this product will help
to ensure a more efficient use of natural resources.
Safety Warnings
Icons have been placed on the central controller to call attention to general
use safety precautions. These labels are an integral component of the central
controller. Replace any label that has peeled off or become illegible. The
meanings of these labels are explained below.
Installation and electrical connections must be performed by a
qualified professional, according to the manufacturer’s specifications
and to the standards of authorities in the field.
Failure to observe these rules may result in serious injury.
Exactness, particularly regarding electricity and assembly
(couplings, network connections) is imperative.
Important Information
The modification of any component or the use of any third party components
will automatically void any and all guarantees.
The central controller is intended to be used for precise applications of a
technical nature. Exceeding the indicated values is strictly prohibited.
Limitation of liability
Neither Oldham nor any other affiliated organization shall be held liable under
any circumstances for any damage whatsoever including, without limitations,
damages for loss of production, interruption of production, loss of information,
controller failure, personal injury, loss of time, money, or materials, or for any
indirect or consecutive consequence of loss occurring during the use of the
product or the inability to use the product, even in the event that Oldham had
been informed of such damages.

2 –General Introduction
3
Chapter 2 │General Introduction
Subject
The MX 32 controller is intended for light units that do not require an electrical
cabinet.
The MX 32 measurement and alarm controller can measure 1 or 2 channels
independently. Each channel is linked to one or more sensors installed in the
locations being monitored. The measurement from the sensor is displayed on
the MX 32 controller and compared to the alarm thresholds. In the event that
the measurement exceeds the threshold, the controller activates the relays
which can be used to control external components.
View: Front internal
The MX 32 controller is composed of the following components:
■A wall-mounted enclosure (ref. A) equipped with a terminal cover (ref. F), a
faceplate (ref. C) and a transparent hinged cover (ref. D) ;
■a power supply board (analog) (ref. E) ;
■a display card (microprocessor) (ref. B).
Figure 1: Overall view of the MX 32 controller components.

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MX 32
Instruction Manual
View: Front
Figure 2: Full view of the MX 32 controller.
Ref.
Function
A.
Button to increase the value displayed or flip to the next menu/option.
B.
Button to decrease the value displayed or flip to the previous menu/option.
C.
LCD screen displaying measurements, menus and options.
D.
Labels, for the LCD screen, indicating the display for Channel 1 or Channel 2.
E.
Menu access button. See page 16.
Button to confirm the value displayed.
F.
Buzzer activated in the case of fault or alarm if authorization is granted. See page 31.
G.
LEDs for Channel 1.
H.
LEDs for Channel 2.
J.
Removable faceplate; also see ref. R.
K.
LED lights up when the channel is active.
L.
Alarm threshold for level 1. LED lights up when the alarm threshold is exceeded or
when programming the alarm threshold for the channel.
M.
Alarm threshold for level 2. LED lights up when the alarm threshold is exceeded or
when programming the alarm threshold for the channel.
N.
Fault LED
■Lights up when there is a fault in the channel.
■Blinks during programming of the channel.
P.
Access to the zero and sensitivity settings (Figure 4, ref. O to R).
Q.
Connection terminals (sector, 24VDC, sensors, dry alarm contacts); front view with
protective cover removed.
R .
Removable faceplate in maintenance position.

2 –General Introduction
5
LCD Information
Figure 3: LCD Information.
Ref.
Function
See page
A.
Indicator for alarm threshold rising.
13
B.
Indicator that Channel 1 is selected. See Figure 2, ref. D.
14
C.
Digital indicator (measurement value, alarm threshold value, etc.)
13
D.
Indicator that Channel 2 is selected. See Figure 2, ref. D.
14
E.
Percent symbol.
18
F.
Negative sign.
G.
Indicator for alarm threshold falling.
18
H.
Symbol indicating level 1 alarm threshold (AL1) activated.
18
J
Symbol indicating level 2 alarm threshold (AL2) activated.
18
K.
Time delay after calibration (blocking the relays): the yellow LED blinks
and the icon is displayed.
18
L.
A Maintenance key icon is displayed while the programming and
calibration menu is being used.
18
View: Internal
Figure 4: Internal view.

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MX 32
Instruction Manual
Ref.
Function
See page
A.
Configuration jumper (J03) for Fault* relay settings.
■Up position: Fault relay contact closed in alarm mode.
■Down position: Fault relay contact open in alarm mode.
10
B.
F7 Fuse (5x20, 250 V AC - 2 A T) with 24V DC power supply.
8
C.
F9 Fuse:
■5x20, 250 V AC - 160 mA T with 230 VAC power supply.
■5x20, 250 V AC - 315 mA T with 115 VAC power supply.
8
D.
F8 Fuse:
■5x20, 250 V AC - 160 mA T with 230 VAC power supply.
■5x20, 250 V AC - 315 mA T with 115 VAC power supply.
8
E.
Sector power supply terminal (230 V AC or 110 V AC upon request) with
the following identifications: P (phase), N (neutral) and (ground).
8
F.
Power terminal block 24 V DC (0, + 24V).
8
G.
Fault relay terminal block. Contacts RCT, 250 V AC –2 A. Contact
status not in alarm mode as defined by J03 (ref. A).
10
H.
Terminal block connection for channel #1 sensor.
9
I.
Relay terminal block RL 1 - Channel 1. Contacts RCT, 250 V AC –2 A.
Contact status not in alarm mode as defined by J10 (ref. X).
10
J.
Secondary ground connection.
8
K.
Relay terminal block RL 2 - Channel 1. Contacts RCT, 250 V AC –2 A.
Contact status not in alarm mode as defined by J05 (ref. V).
10
L.
Terminal block connection for channel #2 sensor.
9
M.
Relay terminal block RL 1 - Channel 2. Contacts RCT, 250 V AC –2 A.
Contact status not in alarm mode as defined by J08 (ref. W).
10
N.
Relay terminal block RL 2 - Channel 2. Contacts RCT, 250 V AC –2 A.
Contact status not in alarm mode as defined by J07 (ref. U).
10
O.
Zero settings (P4) for channel #2.
26
P.
Sensitivity settings (P6) for channel #2.
27
Q.
Sensitivity settings (P5) for channel #1.
26
R.
Zero settings (P3) for channel #1.
27
S.
Programming circuit (Explo 340 mA or 4-20 mA) for channel #1.
-
T.
Programming circuit (Explo 340 mA or 4-20 mA) for channel #2.
-
U.
Configuration jumper (J07) for Alarm 2*, channel #2 relay.
■Up position: relay contact closed in alarm mode.
■Down position: relay contact open in alarm mode.
-
V.
Configuration jumper (J05) for Alarm 2*, channel #1 relay.
■Up position: relay contact closed in alarm mode.
■Down position: relay contact open in alarm mode.
-
W.
Configuration jumper (J08) for Alarm 1*, channel #2 relay.
■Up position: relay contact closed in alarm mode.
■Down position: relay contact open in alarm mode.
-
X.
Configuration jumper (J10) for Alarm 1*, channel #1 relay.
■Up position: relay contact closed in alarm mode.
■Down position: relay contact open in alarm mode.
Y.
F13 Fuse (5x20, 250 V AC –630 mA T).
-
Z.
F11 Fuse (5x20, 250 V AC –630 mA T).
-
*alarm relays are configured as energized at the factory. This means that they are supplied with
power when not in alarm.