SKF Multilog On-Line System IMx-S 5 - 1
User Manual – Revision S
5
Troubleshooting Guide
This section is intended as an aid to fault finding, on an IMx-S system. It is designed for
instrumentation engineers and others with sufficient knowledge of electrical
troubleshooting including safe working procedures, on mains powered electronic
systems. Be aware that invasive troubleshooting may cause changes in alarm or channel
status in the IMx-S and any interconnected systems.
Whilst striving to provide information that is as accurate as possible, SKF cannot be held
responsible for any injury or damage to persons or material that occur in the
interpretation of or due to actions taken, based on information in this document.
➢ Note - The product warranty will be invalidated if the IMx-S is
damaged through an incorrect hardware configuration, or if
incorrect connections have been made that expose any sub-
system or circuit to voltages above their operational rating.
Sensor circuits
Possile auses fo a o-esposie seso ilude:
• Cable damage, with an open or short circuit in the sensor cable
• Miswiring
• Incorrect DIP switch configuration
• Incorrect software configuration
• Sensor fault
• Hardware fault in IMx-S
• Tacho ol: “peed sigal too eak/ipedae too high fo IMx-S
In addition to, most of, the above, where the sensor generates a higher than expected or
widely varying signal, consider also the following possible causes:
• Incorrectly mounted or loose sensor
• Excitation of sensor mounted resonance
• Signal disturbance due to external noise (for example RFI)
• Grounding issue
• Eddy current probe only: shaft surface damage, probe circuit common inadvertently
grounded at an uninsulated in-line connector or due to cable damage
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