Troubleshooting Guide; Problems And Symptoms - SKF Multilog IMx-S Series User Manual

Troubleshooting Guide is intended as an aid when IMx-S system is not functioning
correctly.
It is designed for instrumentation engineers and others with sufficient knowledge of
electrical troubleshooting in electronic systems with a 110 V/230 V power supply and of
the risks that this can mean in case of incorrect procedure.
SKF Condition Monitoring Center Luleå strives to provide information that is as accurate
as possible. However, SKF Condition Monitoring Center Luleå cannot be held
responsible for any injury or damage to persons or material that can occur in the
interpretation of, or due to actions taken on the basis of information in this document.

Problems and Symptoms

Sensor signal disappears or is abnormally changed for single channels
Possible causes:
• Broken sensor cable
• Short circuit in sensor cable
• Sensor fault
• Hardware fault with IMx-S input stage
• Grounding loop
Suggested solution:
• Carry out sensor/cable test.
A sensor repeatedly generates a false alarm or varies abnormally
Possible causes:
• Broken sensor cable/contact
• Incorrectly mounted sensor
• Hardware fault with IMx-S input stage
• Signal disturbed by external noise
• Grounding loop
Suggested solution:
• First Carry out sensor/cable test. In addition, check the sensor mounting. If this
yields no result, contact SKF Condition Monitoring Center Luleå.
SKF Multilog On-Line System IMx-S
User Manual
 Note - The guarantee becomes void if IMx-S units are damaged
through incorrect intervention in the hardware, or a patently
incorrect connection in contravention of directions given.

Troubleshooting Guide

6
6 - 1