User's Manual

MAINTENANCE FUNCTIONS
Troubleshooting
64 (92)
SKF Enlight Collect IMx-1 System
User Manual
Revision C
Be aware that in addition to the normally expected flow, the following apply:
• If the app doesn’t connect to the sensor via Bluetooth then after a few
minutes the sensor will revert to mesh mode.
• If however, the app has connected but the app communications aren’t
properly closed or are not maintained, after 10-minutes of inactivity the
sensor will move to flight mode.
• Similarly, once connected, a second NFC tap will also place the sensor in
flight mode.
Sensor commissioning and decommissioning are subsets of the general interactions
and can be similarly illustrated as follows:
Figure 41 The commissioning flow – app controlled
Figure 42 The decommissioning flow – app controlled
Important note: Sensor power consumption in mesh active mode is of the order of
100x greater than the consumption when the mesh has been successfully joined.
Despite that the mesh radio will be deactivated if after 5-minutes the sensor hasn’t
successfully joined the mesh, there remains the possibility that in conditions of mesh
instability, the sensor may experience frequent but short duration disconnections that
will result in very high drain of the battery because the time-out mechanism is not
being triggered. If this were to be sustained and left uncorrected, battery lifetime
could be reduced to just a few weeks.
To detect this type of condition, the sensor self-monitoring will flag if three
disconnections have occurred within a 24-hour period. System users should
therefore be alert to:
• A system alarm in @ptitude Observer that flags that a sensor is reporting
disconnections and/or frequent resets: ‘Network Instability’. The state of the
network instability flag is also logged in the mesh network information log.
• Unexpectedly rapid loss of indicated, remaining battery life.
When either is apparent the user must take urgent action to stop the battery drain
and correct the sensor mesh issues. If the sensor mesh will take time to evaluate and