SKF IMx-Rail User manual

Copyright © 2018 by SKF Group
All rights reserved.
SKF Sverige AB
Aurorum 30, 977 75 Luleå, Sweden
Telephone: [phone]
SKF Multilog On-line
System IMx-Rail
User Manual Supplement
Part Number 15V-090-00082-100
Revision B –September 2020
Read this manual carefully before using the product. Failure
to follow the instructions and safety precautions in this manual can
result in serious injury, damage to the product or incorrect
readings. Keep this manual in a safe location for future reference.

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Table of contents
1Product description .......................................................................7
1.1 Introduction to the SKF Multilog On-line System IMx-Rail.............................7
1.2 SKF Multilog On-line System IMx-16Plus ......................................................8
1.2.1 LTE/GSM (mobile) data module......................................................8
1.2.2 Local network RJ45 or Wi-Fi module...............................................8
1.2.3 GPS module (optional / external).....................................................8
1.2.4 Modbus interfacing to external systems.....................................9
1.3 DC-DC power module.....................................................................................9
1.4 Enclosure........................................................................................................9
2Installation and operating instructions......................................10
2.1 Introduction...................................................................................................10
2.2 System communications...............................................................................11
2.3 SKF Multilog On-line System IMx-Rail enclosure mounting ........................11
2.4 Power requirements......................................................................................12
2.5 On train cabling.............................................................................................13
2.5.1 Cable glanding...............................................................................14
2.6 GPS module connection notes.....................................................................15
2.6.1 GPS (location data) module...........................................................15
2.6.2 RS485 Modbus bus termination ....................................................15
2.7 Commissioning and Maintenance ................................................................16
2.7.1 System commissioning and security..............................................16
2.7.2 Hardware Maintenance..................................................................16
2.7.3 Performance over Time .................................................................16
3Product specifications.................................................................17
3.1 Product labelling ...........................................................................................17
3.2 EU Declaration of Conformity.......................................................................18
3.3 SKF Multilog On-line System IMx-Rail.........................................................19
3.3.1 Environmental................................................................................19
3.3.2 Power.............................................................................................19
3.3.3 Analogue inputs .............................................................................20
3.3.4 Digital inputs...................................................................................20
3.3.5 Digital outputs ................................................................................20
3.3.6 Analogue measurement.................................................................20
3.3.7 Digital measurement......................................................................20

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3.3.8 Signal processing...........................................................................20
3.3.9 Interfaces........................................................................................20
3.3.10 Storage capacity ............................................................................21
3.3.11 Data processing memory...............................................................21
3.3.12 Certifications ..................................................................................21
3.3.13 Quality control................................................................................21
3.4 Connector details for SKF Multilog IMx-Rail.................................................22
3.4.1 IMx-Rail..........................................................................................22
3.4.2 IMx-16Plus top end cap.................................................................23
3.4.3 IMx-16Plus bottom end cap...........................................................23
3.5 Enclosure mechanical drawings...................................................................24
3.6 GPS module mechanical drawings...............................................................26
4Electrical waste ............................................................................27
Appendix A Limited Warranty...........................................................29

PRODUCT DESCRIPTION
Introduction to the SKF Multilog On-line System IMx-Rail
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1 Product description
1.1 Introduction to the SKF Multilog On-line System
IMx-Rail
The SKF Multilog On-line System IMx-Rail is an online condition monitoring system
specifically designed for railway applications and consisting of a 16-channel
monitoring device complete with mobile and LAN data interfaces (IMx-16Plus), pre-
installed in an outer protective enclosure.
Figure 1 SKF Multilog IMx-Rail –arrangement of main system components
The outer enclosure has been selected to allow the system to be mounted in either
an internal or external location appropriate to the equipment/bearings being
monitored:
•Bogie mounting
•Car chassis mounting
•Internal car/coach mounting
Each of the main component parts of the system, Figure 1, are described in the
following sections, 1.2 to 1.4.
Important note: As this is a user manual supplement, please also refer to
the separate IMx-16/16Plus user manual, which provides further important
information and guidance. Reference: SKF Multilog IMx-16/IMx-16Plus User
Manual.

PRODUCT DESCRIPTION
SKF Multilog On-line System IMx-16Plus
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1.2 SKF Multilog On-line System IMx-16Plus
The IMx-16Plus is a second generation ‘IMx-8’capable of interfacing to 16 analogue
inputs (eight constant current accelerometers or voltage inputs and a further eight
that in addition have, PT1000 compatibility for temperature monitoring).
There are four digital inputs for speed, it is mobile data capable and has RS485 and
LAN interfaces. Note that mobile data and LAN (RJ45 or Wi-Fi) connectivity are all
alternative infrastructures to connect the IMx-Rail to the wider cloud network and
cannot be used simultaneously. Refer also Installation and operating instructions.
In an IMx-Rail device, it is supplied pre-fitted in the Rail enclosure and pre-wired to
the lid mounted antenna and to easily accessible user terminals, above the unit.
These encompass all the terminals available on the IMx-16Plus itself, such as
analogue inputs, digital I/O and RS485. The RS485 link can interface, by Modbus
RTU, to an external GPS module, 1.2.3.
1.2.1 LTE/GSM (mobile) data module
A built-in module provides a wireless mobile data connection (LTE/GSM). It can work
world-wide and provides connectivity to @ptitude Observer software. Mobile data
functionality requires an activated SIM card or eSIM. The enclosure lid carries an
integral radio antenna, no connection to an additional, external antenna is required.
The choice between using a mobile data connection or a Wi-Fi/RJ45 LAN
connection, is part of the IMx-Rail configuration.
1.2.2 Local network RJ45 or Wi-Fi module
A built-in Wi-Fi module provides an 802.11n, Wi-Fi communication interface (2.4
GHz) so that, where available, a local train wireless network can be used as the first
stage of connectivity to @ptitude Observer software, rather than a hard-wired LAN or
the mobile network. Wi-Fi is combined in the lid mounted radio antenna, no
connection to an additional, external antenna is required.
1.2.3 GPS module (optional / external)
The IMx-Rail can use train position data to collate with the condition monitoring
measurements and to support the track monitoring functionality. The GPS data is
requested by the IMx-Rail, acting as a Modbus RTU master on the RS485, two wire
serial interface. Connections for this are available amongst the terminals provided.
An optional GPS module is available. This has an integral antenna, but the module
itself must be fitted external to the IMx-Rail enclosure.

PRODUCT DESCRIPTION
DC-DC power module
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1.2.4 Modbus interfacing to external systems
Modbus communication is a commonly used protocol for exchanging information
between systems, often from different suppliers or providers. Note that Modbus
TCP/IP is not available if the mobile data connection is in use. Refer to the
IMx-16/16Plus user manual for further information on the Modbus capabilities.
1.3 DC-DC power module
This module is included so that the IMx-Rail can be powered directly from the train
supply (24 to 110 V DC). Two IMx-Rail variants are available to service that input
voltage range:
CMON 4116-R-24: 24 V DC nominal (9 to 36 V DC)
CMON 4116-R-110: 110 V DC nominal (43 to 160 V DC)
The power module provides stable, isolated power at 24 V DC, to the IMx-16Plus. It
protects it from any incoming voltage transients whilst at the same time preventing
any disturbance to the train power bus system, from the IMx-Rail.
The power module is pre-wired to both the incoming supply (at the power connector)
and the IMx-16Plus module, internal to the IMx-Rail.
1.4 Enclosure
An outer enclosure houses all the electronics, provides cable gland areas pre-
prepared for the sensor, GPS and other cables and the lid incorporates a single
antenna that supports the internal mobile data and Wi-Fi modules. The 21 cable
entries provided are all supplied fitted with blanking plugs. See also Enclosure
mechanical drawings. As shown in Figure 1, on removing the enclosure lid a
ground bar and terminals for the connection of train cabling are easily accessed.
The IMx-Rail is designed to be mounted on either the train bogie, train car chassis or
internally in a car/coach as appropriate to the equipment and bearings being
monitored.

INSTALLATION AND OPERATING INSTRUCTIONS
Introduction
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2 Installation and operating instructions
2.1 Introduction
At the heart of the IMx-Rail is an IMx-16Plus. This is an updated version of the ‘IMx-
8’with additional sensor capacity (increased number and wider range of sensor
types) and with the additional interfaces needed for rail applications such as GPS,
mobile data and Wi-Fi. An overview of these extended capabilities is shown in Figure
2and details of the specific features and capabilities follow.
Figure 2 SKF Multilog IMx-Rail connections overview
Note that mobile data and LAN (Wi-Fi or RJ45) connectivity are alternative
infrastructures to connect the IMx-Rail to the wider cloud network and cannot be
used simultaneously.
Before beginning an installation, it is important to assess and evaluate the location
where the system is to be installed and to plan how the installation should look after it
has been completed. Make a detailed layout of the equipment and note distances
between components and the networks to which it should connect. Specify the
configuration requirements of each interface, for example network configuration such
as IP addresses and subnet mask for a LAN connection.
Amongst other things, consider the lengths of all cables, their routing, where
electrical power for the unit can be sourced and any interfaces to the train systems.
Good and thorough planning is the basis for a successful installation and system
implementation.

INSTALLATION AND OPERATING INSTRUCTIONS
System communications
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2.2 System communications
The communications setup or mode, determines how the device will communicate
with the wider system. There are 2 main alternative arrangements that can be used
with the IMx-Rail:
•Server initiated (@ptitude Observer initiated communication)
•Client-Server (the IMx-Rail is the initiator of the communication)
These are alternatives for @ptitude Observer/IMx communication, illustrated
diagrammatically in Figure 2.
Whilst in general, the different network connection possibilities (1.2.1 to 1.2.2) can be
considered as alternatives, there are limitations on the permissible combinations of
network connection method and communication mode:
1. Server initiated, requires a server installed on a local network (with RJ45 or
Wi-Fi connection).
2. Mobile data connectivity is only supported in Client-Server mode (device
initiated communications).
The choice between using a mobile data connection or a LAN connection (RJ45 or
Wi-Fi), is part of the IMx-Rail configuration.
2.3 SKF Multilog On-line System IMx-Rail enclosure
mounting
When selecting a location for the device, inside the coach or externally on the coach
chassis or bogie, make sure to consider the following aspects:
•Position it to minimise vibration and to keep clear of high voltage equipment.
•Avoid unnecessary exposure to radiant heat or strong magnetic fields.
•Choose a location convenient for cable routing, to and from the enclosure.
•With unobstructed access and clearance for opening the lid.
•Suitable for an enclosure of this size and weight.
•That will accommodate all the required fixing points.
Refer section 3.5 and Figure 5 for the enclosure dimensions and fixing centres. They
allow the enclosure to be directly mounted, but if needed, an installation specific
mounting bracket can utilise these fixings.

INSTALLATION AND OPERATING INSTRUCTIONS
Power requirements
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2.4 Power requirements
The SKF Multilog IMx-Rail is designed to be powered from the train’s DC supply.
Nominal supply voltages between 24 and 110 V DC are accommodated by
appropriate choice of IMx-Rail model (nominal 24 V DC or 110 V DC input). The
supply to the IMx-Rail device should be protected by an appropriately rated fuse,
refer 3.3.2.
The incoming DC train supply, is connected via the 4-pole power connector mounted
on the side of the IMx-Rail enclosure, Figure 1. The pin designations and details for
this connection are as shown in Table 1 below, two pins are available for each
functional connection:
Table 1 DC input power connection
Pin
Description
1 and/or 4
Supply 0V (Internally connected to -Vin, power module terminal 2)
2 and/or 3
Supply + (Internally connected to +Vin, power module terminal 1)
A mating M12, A-coded, IEC 61076-2-101 cable mounting connector is supplied with
the IMx-Rail and further quantities can be ordered under the following reference:
•CMON 4143: Socket power supply connector for SKF Multilog IMx-Rail
This has push-in connections and accommodates an external cable diameter of 4 to
8 mm. Conductor cross sections (without ferrule) can be in the range 0.14 mm² to
0.75 mm² (26 to 18 AWG). On assembly, after fitting into the rear part of the
connector, the exposed individual conductor length should be 24 mm with 8 mm
stripped back for insertion.
Internally the incoming supply via this connector is pre-wired to the power module
and the output of that power module is pre-wired to the IMx-16Plus module.
On the top face of the power module there is a single (green) ’output on’ LED but no
user controls or adjustments.
Refer also to the important safety warnings on the following page.
Note that (except in circumstances where the three relay outputs and LTE/GSM
functions are all enabled), the IMx-16Plus also supports PoE (Power over Ethernet).
This can be used as either a single or as a redundant power source, refer also to the
SKF Multilog IMx-16/IMx-16Plus User Manual.

INSTALLATION AND OPERATING INSTRUCTIONS
On train cabling
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Important safety warnings:
2.5 On train cabling
The IMx-Rail is appropriately prepared to accept train cabling via three of the
enclosure walls, refer section 3.5 and Figure 6 to Figure 8. The enclosure provides a
total of two entries for M20 x 1.5 glands and 19 entries for M12 x 1.5 glands for the
following functions:
•Analogue sensor cables
•Speed sensor (digital signal) cables
•An Ethernet cable
•GPS module cable
•RS485 and relay connections
These cable entries are pre-fitted with blind plugs.
In some countries, the installer must be certified to connect equipment,
such as an IMx-Rail, to train systems.
Make sure that the power is disconnected before the installation begins.
The system power supply must be provided with an appropriately
positioned, clearly labelled full pole isolator or switch that can be used to isolate
and lock-out power from the IMx-Rail unit during installation, maintenance or
modification work. The switch must be labelled "IMx-Rail” or similar, with clear
identification of which IMx, if multiple units are deployed. The On/Off position
must be clearly marked.
The supply scheme should also incorporate suitable fusing or circuit breakers for
the protection of the supply cable being used. Protection for the IMx-16Plus is
provided within/by the power module.
To connect the IMx-Rail to the DC power supply, use cable of the following
standard or better:
FKLK 3 x 1.5 mm2 (16 AWG) or EKLK 3 x 1.5 mm2 (16 AWG) or corresponding,
with minimum voltage requirement 300 V and temperature range of −40 to
+70 °C (−40 to +158 °F).

INSTALLATION AND OPERATING INSTRUCTIONS
On train cabling
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Important safety warnings:
Within the enclosure a grounding bar is provided for use in conjunction with the
incoming cabling. Important additional information and guidance in respect of
glanding, grounding and cabling (sensor, Ethernet and RS485) can be found in the
SKF Multilog IMx-16/IMx-16Plus User Manual.
The user connection terminals, 3.4.1, are of a lever, push in type (tool-free design).
Cable entry is vertical (at right angles to the underlying PCB). These terminals accept
conductors in the range 0.2 to 4 mm2(24 to 12 AWG) with an insertion length of 9 to
11 mm. For cable/wire ends, bootlace ferrules or cord end terminals are
recommended.
When routing or arranging cabling within the IMx-Rail enclosure avoid, where
possible, routing the analogue sensor cabling directly over the DC-DC power module.
2.5.1 Cable glanding
The glands used with the IMx-Rail should be chosen to maintain the enclosure IP
rating and be appropriate for a railway environment and the cable type. As mentioned
above, 2.5, the IMx-Rail is prepared for a mix of M12 x 1.5mm and M20 x 1.5mm
glands.
The M12 x 1.5 gland SKF supply with the optional GPS module, 3.6, has the
following specifications:
Application: Designed to withstand high pressure wash-downs
Corrosion resistant, stable
Material: Nickel-plated brass
IP rating: IP 68 - 10 bar
IP 69
It is recommended that all glands used with IMx-Rail are of an equivalent or higher
specification.
Only remove the fitted blind plugs where it is necessary to accommodate a
cable. Any unused cable entries must remain closed off. Always use an
appropriate cable gland to accommodate the cable.

INSTALLATION AND OPERATING INSTRUCTIONS
GPS module connection notes
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2.6 GPS module connection notes
2.6.1 GPS (location data) module
An external GPS module is available as an option. When fitted, GPS data is
requested by the IMx via Modbus RTU over an RS485, 2-wire connection. On this
interface the IMx is the master device and the GPS module is the slave device.
The GPS module comes with a 5-m cable allowing it (with its integral antenna) to be
fitted outside of the IMx-Rail enclosure in an appropriate location that will allow it to
acquire satellite tracking.
The GPS module is connected to the user terminals provided, refer Table 2 below
and section 3.4.1. Note that the RS485A(A/B) terminals must be used.
Table 2 GPS module connections to IMx-16Plus
Wire colour
Description
IMx-Rail terminal
Brown
GPS module power
GPS PWR
Black
RS485 A
RS485AA
White
RS485 B
RS485AB
Blue
Module 0V
GND
Grey
Not used
-
Refer note, below, about bus termination.
The GPS module has two status indicators, visible on the front face of the module:
Green flashing: Power on
Amber flashing: Modbus communications activity
2.6.2 RS485 Modbus bus termination
If an IMx-Rail device is placed first or last in the bus chain, then an external bus
termination resistor must usually be connected to it. (Note: there is no built-in
termination that can be activated by configuration).
Important –When connecting the optional GPS module to the IMx-16Plus,
do not fit a termination resistor.

INSTALLATION AND OPERATING INSTRUCTIONS
Commissioning and Maintenance
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2.7 Commissioning and Maintenance
2.7.1 System commissioning and security
System commissioning and troubleshooting is supported by the SKF Multilog IMx
Manager, software. This is an SKF app for both Android and iOS devices and is
available from the relevant app store. The app provides features to manage and
configure the IMx system and to visualise measurement data:
Important additional information and guidance in respect of system commissioning
and security can be found in the SKF Multilog IMx-16/IMx-16Plus User Manual.
2.7.2 Hardware Maintenance
The IMx-Rail hardware, i.e. IMx-16Plus, power supply and its associated sensors,
are virtually maintenance free, though a yearly inspection of all installed equipment is
advised. Good practice is to use the IMx Manager app to generate and compare
annual SAT (Site Acceptance Test) reports.
The IMx-16Plusdevice does not need to be opened for hardware maintenance or
inspection. Refer to the Troubleshooting section of the SKF Multilog IMx-16/IMx-
16Plus User Manual, for guidance on checks that can be made and where necessary
contact SKF TSG for advice.
Any repairs to an IMx-Rail device should only be carried by an SKF repair centre.
They can source all required replacement parts, including the DC-DC power module
and antenna:
CMON 4140: 24V Power Supply for IMx-Rail (for CMON 4116-R-24)
CMON 4141: 110V Power Supply for IMx-Rail (for CMON 4116-R-110)
CMON 4142: External antenna for SKF Multilog IMx-Rail/IMx-16Plus
2.7.3 Performance over Time
No significant performance degradation over time, is expected for the IMx-Rail
hardware.

PRODUCT SPECIFICATIONS
Product labelling
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3 Product specifications
3.1 Product labelling
Externally on one end wall and internally on the inside of the enclosure lid, a
manufacturing data label confirms product and company information, CE marking,
WEEE marking and RoHS compliance. The QR code contains the product
information shown alongside it. The supply voltage for the device (either a nominal
24 or 110 V DC) is prominently shown:
Figure 3 Manufacturing data label 24 V version
Figure 4 Manufacturing data label 110 V version
Refer to 3.3.12 (detailed product specifications) for a complete listing of compliances
and certifications.

PRODUCT SPECIFICATIONS
EU Declaration of Conformity
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3.2 EU Declaration of Conformity

PRODUCT SPECIFICATIONS
SKF Multilog On-line System IMx-Rail
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3.3 SKF Multilog On-line System IMx-Rail
3.3.1 Environmental
•Size (H x W x D): 260 x 160 x 90 mm (10.24 x 6.30 x 3.54 in.)
Dimensions do not include antenna and glands/cable exits
The antenna protrudes only 32 mm but for improved reception, avoid it being
closer than 500 mm to other metal structures
•Weight: 8 725 g (19.2 lb)
•IP ratings:
oMultilog IMx-Rail: IP66/IP67
oOptional GPS module: IP69K
•Temperature ranges
oOperating: −40 to +65 °C (−40 to +149 °F)
oStorage: −50 to +85 °C (−58 to +185 °F)
•Humidity: 95% (relative) non-condensing
•Measurement category II
•Pollution degree 2
•Maximum altitude: 2 000 m (6 562 ft)
•Vibration tolerance:
4 –13.2 Hz 1 mm
13.2 –100 Hz 0.7 g
Number of axes: 3 mutually perpendicular
3.3.2 Power
•For information on Power over Ethernet refer IMx-16/16Plus user manual
•Input power connector: An (M12, A-coded, IEC 61076-2-101 cable mounting)
connector is supplied
•Power module variants for 24 V DC and 110 V DC (both nominal)
•24 V DC module:
oInput voltage range: 9 to 36 V DC
oFuse at 2 A slow blow, T2AL
oProtection against over voltage (input surge voltage 1 s maximum)
▪50 V DC maximum
oUnder voltage lock-out circuit
▪8 V DC typical
•110 V DC module:
oInput voltage range: 43 to 160 V DC
oFuse at 1 A slow blow, T1AL
oProtection against over voltage (input surge voltage 1 s maximum)
▪170 V DC maximum
oUnder voltage lock-out circuit
▪40 V DC typical
•Common power module specifications are as follows:
oInrush current 15 A typical
oOutput 24 V DC, 20 W, typical efficiency 87%
oEN 50155 approval for railway applications
oSafety approvals: IEC/EN 60950-1 and UL 60950-1
oInput filter meeting EN 55032, class B (emissions)

PRODUCT SPECIFICATIONS
SKF Multilog On-line System IMx-Rail
20 (29)
SKF Multilog On-line System IMx-Rail
User Manual Supplement
Revision B
oAluminium cased
oIsolated (input/output, input/case)
oContinuous short circuit protection with automatic recovery
3.3.3 Analogue inputs
•16 analogue single ended inputs, referenced to chassis/enclosure ground.
•Channels 9 to 16 can connect to additional sensor types
oPT1000, temperature probes (2-wire connection)
•For further information refer IMx-16/IMx-16Plus user manual
3.3.4 Digital inputs
•Four digital inputs, non-isolated, referenced to chassis/enclosure ground
•For further information refer IMx-16/IMx-16Plus user manual
3.3.5 Digital outputs
•Three: System status (RS), Warning and Alarm (R1 and R2)
•For further information refer IMx-16/IMx-16Plus user manual
3.3.6 Analogue measurement
•24-bit A/D conversion, one A/D converter for each channel
•Maximum sampling frequency: 102.4 kHz (though lower for event capture)
•Frequency range: from DC to 40 kHz
•For further information refer IMx-16/IMx-16Plus user manual
3.3.7 Digital measurement
•For further information refer IMx-16/IMx-16Plus user manual
3.3.8 Signal processing
•Event capture mode
oData storage on time, associated measurement value or alarm state
oRun cycle mode (used for rail track monitoring)
•Rail Track monitoring
oSupports @ptitude Observer’s Metro and Mainline modes
oMeasurements linked to GPS and speed data (as appropriate)
oContinuous capture between two locations or when triggered
▪At least 9.5 minutes of data at 1 kHz Fmax.
▪Ready for new capture after 15 s (2-channels used)
•For further information refer IMx-16/IMx-16Plus and/or @ptitude Observer
user manuals
3.3.9 Interfaces
•Mobile data or Ethernet LAN (RJ45 or Wi-Fi)
oLTE/GSM/Wi-Fi antenna is integral to the enclosure lid
oFirmware configurable support for micro-SIM or eSIM
▪Micro-SIM card holder (top end cap of IMx-16Plus)
oOne RJ45 port, 100 Mbit/s