Vega VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) standpipe ver. 4 … Manuel d'utilisateur télécharger pdf (Page 41)

9 Diagnosis, Asset Management and service

VEGAPULS 66 standpipe version • 4 … 20 mA/HART - two-wire

36523-EN-121011

Code

Text mes-

sage

Cause Rectication

M501

Error in the

non-active

linearization

table

– Hardware error EEPROM – Exchanging the electronics

– Send instrument for repair

M502

Error in the

diagnosis

memory

– Hardware error EEPROM – Exchanging the electronics

– Send instrument for repair

M503

Reliability too

low

– The echot/noise ratio is the

small for a reliable meas-

urement

– Check installation and

process conditions

– Clean the antenna

– Change polarisation direc-

tion

– Use instrument with higher

sensitivity

M504

Error on an

device inter-

face

– Hardware defect – Check connections

– Exchanging the electronics

– Send instrument for repair

M505

No echo avail-

able

– Level echo can no longer

be detected

– Clean the antenna

– Use a more suitable

antenna/sensor

– Remove possible false

echoes

– Optimize sensor position

and orientation

9.4 Rectify faults

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

ures to rectify faults.

The rst measures are:

•

Evaluation of fault messages, for example via the indicating and

adjustment module

•

Checking the output signal with 4 … 20 mA instruments

•

Treatment of measurement errors

Further comprehensive diagnostics options oer 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 rectied.

Connect a handmultimeter in the suitable measuring range according

to the wiring plan. The following table describes possible errors in the

current signal and helps to remove them:

Reaction when malfunc-

tions occur

Procedure for fault recti-

cation

Check the 4 … 20 mA

signal

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 59 60

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Vega VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) standpipe ver. 4 … Manuel d'utilisateur Page 41

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