SKF WEM-200 User manual

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DO Saint Cyr WEM 200
WEM-200
SKF Wheel End Monitoring
User Manual – Quick Start

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Table of Content
1Description................................................................................................................4
2WEM2 assembly .......................................................................................................5
3Product activation ....................................................................................................6
4Product modes .........................................................................................................6
5Download the Mobile application ...........................................................................8
5.1 Application description.....................................................................................8
5.1.1 “Vehicles” view ......................................................................................8
5.1.1.1 “All” page.......................................................................................................................................8
5.1.1.2 “Alarms” page ...............................................................................................................................9
5.1.1.3 “Nearby” page...............................................................................................................................9
5.1.2 “My Ride” view.................................................................................... 10
5.1.3 “More” view......................................................................................... 10
6Product commissioning & status ........................................................................ 11
6.1 Create a new vehicle :.................................................................................. 13
6.2 Access to an existing vehicle ....................................................................... 17
6.3 Add Sensor to a vehicle................................................................................ 18
6.4 Sensor status................................................................................................ 19
7Precautions & maintenance ................................................................................. 22

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Table of Content
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1 Description
Product functionality:
WEM200 (Wheel end Monitor) – is a condition monitoring device. It monitors wheel end bearing conditions by
measuring and analyzing vibrations of the wheel end bearing of the vehicle. The vehicle is generally a truck, a
trailer or a bus. It provides warning in case of bearing failure detected and facilitates regular wheel end bearing
condition check. Bearing status information is sent to a smart device through BLE (Bluetooth Low Energy).
Additionally, the temperature is measured and transmitted through BLE.
WEMs is delivered with a separated magnet which is used to wake up the product.

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2 WEM2 assembly
Mechanical assembly on vehicle:
Please respect below mounting instructions to ensure WEM to perform proper analysis
1. Remove the rim cover (if existing)
2. Unscrew two consecutive rim nuts
3. Position the WEM on the bolts
/!\ Please mind the arrows directions. They shall target the tire.
4. Screw the wheel nuts according to standard mounting specification
5. Put back the rim cover (if existing)

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3 Product versions
Product is able to work in 2 ways depending of FW configuration requested by customer.
•Mobile : where Mobile App is the only user interface for all operations associated with WEM 200 sensor
•Telematics where Mobile App is used for product commissioning (including reset/remove) and user telematics
system (including gateway) is used to monitor sensor WEM 200

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4 Product activation and functions
Product can have 3 different states :
Transport
Standstill
Operating
The product is initially received in transport mode : no BLE communication and no measurement
Activation of the product is done while approaching the magnet from sensor housing in the “Magnet” identified area.
Then LED is then lighting green.
In case product has been previously configured, LED lights green 1s.
If product is not configured, the LED lights green during the full configuration sequence done with mobile app.
If no specific action is done and product is has not been configured the product goes back to transport after 30s.
For “Mobile” FW version, the product transmits BLE frame every 10s when vehicle is standstill
For “Telematics”FW version, the product transmits BLE frame every 30mn when vehicle is operating in movement on the
road
The product handles itself the switching from standstill to operating mode according to detection of vehicle movement.
Product can be set back to transport mode approaching magnet from sensor housing.
In case of failure detection on bearing the product LED blinks red 1s ON/1s OFF for 14 days.
Product can be RESET only via mobile App as described in related chapter.
In case of failure detection on sensor itself, the product LED blinks red for 14 days 1s ON/2s OFF ;

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5 Mobile application
A mobile application dedicated to iOS smart devices has been developed by SKF.
This mobile Application is delivered by SKF in following ways:
1- Pilot customers: registered user of each company receives an e-mail from SKF providing a link for download of
the mobile application
2- Serial phase: users can download the mobile application from Apple Store
5.1 Application description
Application is made of 3 main views displayed in the bottom bar of the App :
5.1.1 “Vehicles” view
5.1.1.1 “All” page
it provides the list of registered vehicles from a company – vehicle could be found using the mobile app search bar
It allows to create new vehicles by clicking symbol + on top right corner

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5.1.1.2 “Alarms” page
It provides the list of vehicles were a WEM2 sensor alarm have been detected
You can get access to each vehicle from the list to see its current state and detect if a sensor is still defective and its
location.
5.1.1.3 “Nearby” page
It provides the list of all vehicles detected in the close area where scanning is done by the user of the mobile app
You can get access to each vehicle from the list

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5.1.2 “My Ride” view
It provides option to attach 2 vehicles for instance a truck and a trailer
5.1.3 “More” view
It provides legend for icons used in mobile app and release version. Help & Privacy gives access to additional information.

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6 Product commissioning & status
Unless product would be delivered preconfigured for a dedicated vehicle and a specific assembly position, commissioning
has to be done by user.
This operation has to be done using the SKF Mobile Application working on iOS smart device and transmitting data via
Blue Tooth Low Energy (BLE) protocol.
Follow below sequence :
1- Activate Bluetooth on the iOS smart Device : Settings\Bluetooth\yes
2- Open the mobile App by clicking the related icon on the smart device
You will see a prompt of the application

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Then the mobile App will load the company vehicles already registered into the system
At that stage user has 2 options : Create new vehicle or access to an existing vehicle

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6.1 Create a new vehicle :
Press the “+” top right symbol
Then enter related information :

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Select the vehicle type in the list
Fill in the vehicle information taking care of warnings for Vin ID and Vehicle type

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Then press Create vehicle button
Each axle can then be configured by selecting driven or non-driven + specific T° threshold

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6.2 Access to an existing vehicle
Click on the vehicle in the list will give access to this vehicle configuration menu :
By clicking one of the + symbol you will see available sensor which are available and ready to add to the vehicle
and related position selected

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6.3 Add Sensor to a vehicle
This operation is done by selecting add sensor from the menu.
Following screens will display one by one up to the final screen where sensor is added to the vehicle at the specific
selected location. The sensor icon will turn to green indicating proper commissioning
Operation could be repeated to configure and add a new sensor to vehicle.

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6.4 Sensor status
click on the sensor icon
Scroll down the page to view available parameters :

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Following information are available :
•T° : sensor is providing the last measured T° value and the Maximum T° recorded in its memory
It is possible to configure T° Alarm threshold for each axle of the vehicle by pressing the vehicle axle type in
the middle of the vehicle drawing: T° threshold could be modified manually typing a new value and pressing
update axle to validate
In case measured temperature would be higher than the selected threshold value, icon of the sensor will turn
to red T°.