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5 exchanging the electronics module – VEGA VEGAPULS 63 (≥ 2.0.0 - ≥ 4.0.0) Modbus and Levelmaster protocol User Manual

Page 54

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54

10 Diagnosis, Asset Management and service

VEGAPULS 63 • Modbus and Levelmaster protocol

41364-EN-130228

Measurement error during emptying

Fault description

Error pattern

Cause

Rectification

11. Measured value re-

mains unchanged in

the close range during

emptying

Level

time

0

– False echo larger than the level

echo

– Level echo too small

– Remove false echoes in the

close range. Check: Antenna

must protrude out of the socket

– Remove contamination on the

antenna

– Minimize interfering instal-

lations in the close range by

changing the polarization

direction

– After removing the false ech-

oes, the false signal suppres-

sion must be deleted. Carry out

a new false signal suppression

12. Measured value

jumps towards 0 %

during emptying

Level

time

0

– Echo from the tank bottom

larger than the product echo,

for example, with products with

ε

r

< 2.5 oil-based, solvents

– Check application parameters

Medium type, Vessel height and

Floor form, adapt if necessary

13. Measured value

jumps sporadically to-

wards 100 % during

emptying

Level

time

0

– Varying condensation or con-

tamination on the antenna

– Carry out false signal suppres-

sion or increase false signal

suppression in the close range

by editing

– With bulk solids, use radar sen-

sor with purging air connection

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 the normal working hours on

seven days a week around the clock.
Since we offer this service worldwide, the support is in the English

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

are the normal call charges.

10.5 Exchanging the electronics module

If the electronics module is defective, it can be replaced by the user.
In Ex applications only one instrument and one electronics module

with respective 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 differ 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

Reaction after fault recti-

fication

24 hour service hotline