Vega POINTRAC 31 Foundation Fieldbus Bedienungsanleitung PDF herunterladen (Seite 39)

9 Diagnostics and service

POINTRAC 31 • Foundation Fieldbus

41779-EN-131119

The following table describes possible faults that may not generate an

error message:

Error Cause Rectication

The instrument

signals covered

without covering

with the medium

The instrument

signals covered

with covering with

the medium

Voltagesupply

missing

Check cables for breaks; repair if nec-

essary

Operating voltage

too low

Check, adapt if necessary

Electrical connec-

tion faulty

Check connection according to

chapter "Connection steps" and if

necessary, correct according to chap-

ter "Wiring plan"

Electronics de-

fective

Change the switching behaviour of the

sensors under "Diagnosis/Simulation".

If the instrument does not switch over,

send it in for repair.

Buildup on the in-

ner wall of the

vessel

Remove buildup

Check the Delta I value.

Improve the switching threshold - car-

ry out a double point adjustment

Depending on the reason for the fault and the measures taken, the

steps described in chapter "Setup" must be carried out again or must

be checked for plausibility and completeness.

Should these measures not be successful, please call in urgent cases

theVEGAservicehotlineunderthephoneno.+49 1805 858550.

The hotline is also available outside normal working hours, seven

days a week around the clock.

Sinceweoerthisserviceworldwide,thesupportisprovidedin

English. The service itself is free of charge, the only costs involved are

the normal call charges.

9.4 Exchanging the electronics module

If the electronics module is defective, it can be replaced by the user.

In Ex applications, only instruments and electronics modules with ap-

propriate Ex approval may be used.

If there is no electronics module available on site, the electronics

module can be ordered through the agency serving you. The electron-

icsmodulesareadaptedtotherespectivesensoranddierinsignal

output or voltage supply.

The new electronics module must be loaded with the default settings

of the sensor. These are the options:

•

In the factory

•

Or on site by the user

In both cases, the serial number of the sensor is needed. The serial

numbers are stated on the type label of the instrument, on the inside

of the housing as well as on the delivery note.

Check output signal

Reaction after fault recti-

cation

24 hour service hotline

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