4 rectify faults – VEGA VEGAFLEX 81 4 … 20 mA_HART two-wire Coax probe With SIL qualification User Manual

Page 66

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10 Diagnostics and service

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

44216-EN-130823

Code
Text mes-

sage

Cause

Rectification

M501
Error in the

non-active

linearization

table

– Hardware error EEPROM

– Exchanging the electronics

– Send instrument for repair

M502
Error in the

event memory

– Hardware error EEPROM

– Exchanging the electronics

– Send instrument for repair

M503
Reliability too

low

– Measurement certainty is

too low for a reliable meas-

urement

– Process component or

probe contaminated or

defective

– Check installation and

process conditions

– Clean or exchange process

component or probe

M504
Error on an

device inter-

face

– Hardware defect

– Exchanging the electronics

– Send instrument for repair

M505
no measured

value avail-

able

– Sensor does not detect an

echo during operation

– Check and correct instal-

lation and/or parameter

adjustment

– Process component or

probe contaminated or

defective

– Clean or exchange process

component or probe

M506
Installation/

Setup error

– Error during setup

– Check and correct instal-

lation and/or parameter

adjustment

– Check probe length

M507
Error in the

instrument

settings

– Error during setup

– Error when carrying out a

reset

– False signal suppression

faulty

– Carry out reset and repeat

setup

10.4 Rectify faults

The operator of the system is responsible for taking suitable meas-

ures to rectify faults.

The first measures are:

Evaluation of fault messages, for example via the display and

adjustment module

Checking the output signal

Treatment of measurement errors

Further comprehensive diagnostics options offer a PC with the soft-

ware PACTware and the suitable DTM. In many cases, the reasons

can be determined in this way and faults can be rectified.

Reaction when malfunc-

tions occur

Procedure for fault recti-

fication

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