Maintenance And Repair; General Notes; Fault Resolution Table - Hauber HE100 Series Operating Instructions Manual

HAUBER-Elektronik GmbH
1 Machine earth
2 The shield of the Ex i cable is on the po-
tential of the housing via Pin 5 of M12
connector
3 Do not earth the shield
4 Evaluation unit
15

Maintenance and repair

15.1

General notes

15.2

Fault resolution table

Fault
No measured
value
(4-20 mA)
Incorrect
measurement
value
EMC prob-
lems
Tab. 8: Fault resolution table
(measuring device, PLC, etc.)
Repair and cleaning work on vibration monitoring units may only be performed
by an authorised specialist familiar with the safety regulations governing hand-
ling electrical components.
Replace defective cables immediately!
A defective vibration monitoring unit must be completely replaced.
The vibration monitoring unit HE100 is maintenance-free.
Cause
No voltage supply
Connection cable interrupted
Fuse defective
Connection has incorrect polarity
Vibration monitoring unit defective
Vibration monitoring unit not fric-
tion-locked.
Vibration monitoring unit mounted
in wrong position.
5 Power supply
6 Hauber Ex i sensor
7 Isolating amplifier
8 Potentially explosive atmospheres of
zones 1 and 21 / 2 and 22
9 Area not at risk
Action
Check voltage source and/or supply
cable
Replace connection cable
Replace fuse
Establish correct connection polarity
Replace vibration control unit
Mount vibration monitoring unit in a fric-
tion-locked manner.
Mount vibration monitoring unit in correct
position.
For further information, see chapter "Al-
ternative earthing concept" on page 18.
19