Troubleshooting Guide
Problems and Symptoms
6 - 2
SKF Multilog On
-Line System IMx-S
User Manual
Speed signal unobtainable/faulty for a certain machine
Possible causes:
•
Cable fault (short circuit/broken) to speed sensor
•
Faulty speed sensor, or faulty installation
•
Speed signal too weak/impedance too high for IMx
-S
•
Faulty IMx-S speed input
•
Incorrect setting in hardware
Suggested solution:
•
Test speed input.
Analogue input gives faulty/no signal
Possible causes:
•
Cable fault (short circuit/break) to sensor
•
Faulty sensor
•
Faulty earthing
•
Incorrect setting in hardware
•
Faulty IMx-S input
Suggested solution:
•
Carry out
sensor/cable test
.
Load input gives faulty/no input signal
Possible causes:
•
Cable fault (short circuit/break) to se
nsor
•
Faulty sensor signal
•
Faulty earthing
•
Faulty IMx-S load input
•
Incorrect setting in software
Suggested solution:
•
The load input acts as an analogue input. Therefore, first carry out cabling/input
test. Contact SKF Condition Monitoring Center Luleå if this gives no result.
IMx-S alarm relay does not activate despite of warning or alarm
Possible causes:
•
Cabling fault from IMx-S to alarm panel
•
Configuration error in software
•
Hardware fault in IMx-S unit
Suggested solution:
•
Check the relay signal.
