SKF Multilog On-Line System IMx-M, Руководство пользователя

Страница: 268 / 313

Troubleshooting Guide
Problems and Symptoms
6 - 2 SKF Multilog On-Line System IMx-M
User Manual

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.
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-M

Pulse duration too long or too short / frequency too low or too high

Faulty IMx-M speed input

Incorrect setting in hardware
Suggested solution:

Test speed input.
Analog input gives faulty/no signal
Possible causes:

Cable fault (short circuit/break) to sensor

Faulty sensor

Faulty earthing

Incorrect setting in hardware

Faulty IMx-M input
Suggested solution:

Carry out control of sensor and cabling.
IMx-M alarm relay does not activate despite of warning or alarm
Possible causes:

Disarm active
Suggested solution:

Check the configuration.
@ptitude Monitor ceases to work with a certain IMx-M rack
Possible causes:

Loss of voltage in IMx-M rack

Hardware fault in IMx-M rack, such as power supply or processor module

Break in Ethernet network