HAUBER-Elektronik GmbH
22
16
Maintenance and repair
16.1
General notes
Repair and cleaning work on vibration monitoring units may only be performed
by an authorised specialist familiar with the safety regulations governing
handling electrical components.
Before repair and cleaning disconnect the monitoring unit from the power
supply! Separate plug connections must always be de-energized!
Immediately replace defective connection cables!
A defective vibration monitoring unit must be completely replaced!
The vibration monitoring unit HE2xx is maintenance-free!
16.2
Troubleshooting Table
Fault
Cause
Action
No measured
value
(4-20 mA)
No power supply
Check power source and/or supply
Discontinuity in connecting cable
Replace connecting cable
Fuse defective
Replace fuse
Connection has incorrect polarity
Connection of correct pole
Vibration monitoring unit defective
Replace vibration monitoring unit
Relay does not
switch
Wrong limit value set
Set correct limit value
No power supply
Check power source and/or supply
Discontinuity in connection
Replace connecting cable
Fuse defective
Replace fuse
Connection has incorrect polarity
Connection of correct pole
Defective monitoring unit
Replace monitoring unit
False reading
Vibration monitoring unit not
friction-locked.
Friction lock vibration monitoring unit.
Vibration monitoring unit installed
in wrong place
Install vibration monitoring unit in
correct place
EMC problems
See also Alternative earthing concept,
page 21.
Tab. 10: Troubleshooting Table
