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Installation and Operating MX 15 Manual SINGLE CHANNEL CONTROLLER Part Number: NPM15GB Revision: C.0 The Fixed Gas Detection Experts...
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April 2016 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.
Table of Contents │General Information ........... 1 Chapter 1 The User’s Guide ..................1 Symbols used ....................1 Safety Warnings ..................2 Important Information .................. 2 Limitation of liability ..................2 │Genaral Introduction ..........3 Chapter 2 Purpose of the controller ................3 View: Front ....................
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│ Particular Specifications ......... 25 Chapter 8 Specifications for mechanical and electrical installations in Explosive Zones..........25 Metrological specifications ................. 25 Connecting detectors other than Oldham detectors to the MX 15 controller ..........26 Markings: ....................26 MX 15 Instruction Manual...
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.
│Genaral Introduction Chapter 2 Purpose of the controller The MX 15 measurement and alarm controller is intended for simple installations that do not require an electrical cabinet. The MX 15 controller can be connected to combustible or toxic gas detectors, or oxygen detectors.
View: Internal Figure 2: Internal view. Ref. Function See page Programming circuit (Explo 340 mA or 4-20 mA). F8 Fuse (5x20, 250 V AC - 630 mA T) with 24V DC power supply. F7 Fuse (5x20, 250 V AC - 100 mA T) with 230 VAC power supply. Secondary ground connection.
View: Rear Figure 3: Rear view Ref. Function See page Mounting rail (DIN format) Fixing the enclosure to the rail Stop for removal of the enclosure; pull downward to release. 2 – General Introduction...
│ Installation and wiring Chapter 3 Mounting the controller The MX 15 should be mounted on a DIN rail (see Figure 3), with 5 cm of free space on every side of the controller. The MX 15 controller may be installed in any area except for explosive atmospheres, ideally in a monitored area (security office, control room, equipment room, etc.), in a dry (no condensation) and temperate area (see page 23).
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Verify the current and the grid power supply: the grid power supply must correspond to the supply indicated on the controller front plate. The MX 15 does not have an on/off switch. Certain power supplies can cause serious or fatal injury. All installation and wiring should be performed before turning on the power supply.
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4/20 mA 2 active wire sensors/transmitters ■ C1 : signal (return to ground). ■ C2 : not connected ■ C3 : power supply (+24 Volts). 4/20 mA 3 active wire sensors/transmitters ■ C1 : signal (return to ground). ■ C2 : power supply (0 Volts). ■...
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■ Relay contact output (voltage- free). ■ NO or NC depending on the position of switches J17, J18 and J19. Sector 230 VAC 0V DC +24 V DC Acknowledg ment button Figure 5: MX 15 controller and two OLCT 10 sensors for detection of the same toxic gas (maximum 5 sensors).
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■ Relay contact output (voltage- free). ■ NO or NC depending on the position of switches J17, J18 and J19. Sector 230 VAC 0V DC +24 V DC Acknowledgment button Figure 6: MX 15 controller and two type OLC 10 TWIN sensors. 3 –...
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■ Relay contact output (voltage- free). ■ NO or NC depending on the position of switches J17, J18 and J19. Sector 230 VAC 0V DC +24 V DC Acknowledgment button Figure 7: MX 15 controller and a 3-active wire EXPLO or TOXIC sensor. MX 15 Instruction Manual...
│Operating instructions Chapter 4 Display indications for start-up When starting up the controller, the following indications will be displayed: ■ Software version ■ Maintenance access code ■ Programmed alarm thresholds ■ Stabilization time ■ The measurement from the sensor Channel measurement display The MX 15 controller displays the measurement continuously.
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START UP (STA) CODE (COD) BUZZER (BUZ) TEST (TST) The FAC menu is not described here as it is reserved exclusively for Oldham's use. Do not use this menu without prior training. Menu Confirmation ■ Bring up the desired menu as directed in the Viewing the menus paragraph.
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Initialization Menu (INI) - Start-up This menu is used to start up the microprocessor. It is used in the following situations: ■ By Oldham when shipping new material. ■ At the initial installation. ■ When changing a sensor or a detector.
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Buzzer Menu Allows the user to use or not use the buzzer integrated into the MX 15 unit. ■ Display the BUZZER menu by pressing on the "+" and "-" ( buttons at the same time. ■ Confirm by pressing ENTER ( ■...
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■ Replace the settings access hatch. Procedure for a 4-20 mA transmitter The procedure to follow when the MX 15 controller is connected to a 4-20 mA transmitter without a local maintenance device (calibration switch, etc.). ■ Ensure the TEST has been confirmed in order to block the controller-level relays: see the TEST Menu (TST)paragraph on page 16.
We also recommend calibrating the detector after exposure to high gas concentrations. The site manager is responsible for implementing the safety procedures on his site. OLDHAM is not responsible for implementing safety procedures. 5 – Cleaning, servicing and maintenance...
Fuse replacement Replacement of the fuses should only be performed by a qualified professional. The fuses in use must conform to CEI 127 regulations (time- delayed, low breaking capacity, etc.). Please see the following paragraph. Parts Description Reference 5x20 Fuse, 250 V AC - 630 mA T. 6,154,627 5x20 Fuse, 250 V AC - 100 mA T.
│Technical Specifications Chapter 7 Mounting: enclosure on a DIN rail Dimensions: 185 x 157 x 67 mm. Material: ABS plastic Cable input/outputs: - 3 M20 cable glands, 5.5 to 12 mm cable diameter. - 1 M16 cable gland, 4 to 8 mm diameter - allowance for direct input through the enclosure wall.
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Alarms Type: ■ 2 independent thresholds defined by the user. ■ manual or automatic clearing for increasing or decreasing values as programmed. ■ visualization with red indicator. ■ output relays (alarms 1 and 2). Relay: ■ 2 independent alarm relays energized or de- energized, programmable by the manufacturer.
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EN 61779-4 for methane (calibration gas), butane, propane and hydrogen (gasses which follow response curves), where the controller is used with Oldham gas detectors as stated in the EC Declaration of Conformity (Chapter Where the controller is used with other types of detectors delivering a current of 4-20 mA, they must conform to ATEX Directive 94/9/EC, Annex II, paragraph 1.5 and be compatible with the characteristics described therein...
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In the case that the user connects a non- Oldham brand detector to the MX 15 controller, the user must ensure that the transfer curve is compatible with the input characteristics for the controller, so that the information delivered by the detector will be properly interpreted.
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Thank you for reading this data sheet. For pricing or for further information, please contact us at our UK Office, using the details below. UK Office Keison Products, P.O. Box 2124, Chelmsford, Essex, CM1 3UP, England. Tel: +44 (0)330 088 0560 Fax: +44 (0)1245 808399 Email: sales@keison.co.uk...
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