INSTALLATION AND OPERATING INSTRUCTIONS
Troubleshooting
SKF Multilog On-line System IMx-16Plus
User Manual
Revision Letter A
After the IMx-16Plus has rebooted into maintenance mode, it will listen for an
incoming connection on port 1000 using the existing IMx network settings. Whilst in
this mode the IMx-16Plus will neither initiate a connection to or get a connection
from, the @ptitude Observer monitor, server.
During maintenance mode, the user can:
• Update IMx-16Plus network settings
• Delete a configuration that is causing problems for software/firmware
• Delete the configuration to discard buffered data after rebooting
• Update firmware
Notes:
1. The Online device configurator (OLDC) and the IMx Manager (App) can still
access the IMx-16Plus via serial cable and Bluetooth respectively, regardless
of IMx network settings.
2. During maintenance mode, no measurement data is recorded and the upload
of unsent data stored before entering this mode will resume after restart.
If there is no activity for 60 seconds, the IMx-16Plus will automatically exit
maintenance mode and reboot using the stored measurement configuration.
2.9.3 Sensor circuits
The IMx Manager SAT test functionality can be utilised for basic sensor and cable
troubleshooting, by observing the available measured values and comparing to
expected results for that sensor type and current operating condition. If the machine
is stopped, it may be possible to tap an accelerometer, for example, to test for a
response. If such troubleshooting steps are inadequate, a full (measurement or
output circuit) loop test may be required. Note that it may be necessary to temporarily
disable the cable check function for the channel under investigation, to get a
measurement value during tests.
Possible causes for a ‘non-responsive’ sensor include:
• Cable damage, with an open or short circuit in the sensor cable
• Miswiring
• Incorrect configuration (example: analogue sensor power enable)
• Sensor fault
• Hardware fault in IMx-16Plus
• 4-20 mA only: Incorrect fitting of load resistor
• Tacho only: Speed signal ‘too weak’/impedance too high for IMx-16Plus
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