Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung PDF herunterladen (Seite 68)

9 Diagnostics and service

FIBERTRAC 31 • 4 … 20 mA/HART - four-wire

43386-EN-131119

Code

Text mes-

sage

Cause Rectication

S017

Accuracy

outside the

specication

– Accuracy outside the

specication

– Correct adjustment data

S025

Bad lineariza-

tion table

– Bad linearization table – Carry out linearization

S038

Slave outside

thespecica-

tion

– Slaveoutsidethespecica-

tion

– Check Slave

S125

Ambient tem-

perature too

high/too low

– Ambient temperature too

high/too low

– Protect instrument with

isolating material against

extreme temperatures

The instrument has no status messages to the section "Maintenance".

9.3 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 display and

adjustment module

•

Checking the output signal

•

Treatment of measurement errors

Further comprehensive diagnostics options are available with a PC

with PACTware and the suitable DTM. In many cases, the reasons can

bedeterminedinthiswayandfaultsrectied.

Connect a multimeter 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:

Error Cause Rectication

4 … 20 mA signal

not stable

Leveluctuations Set damping according to the instru-

ment via the display and adjustment

module or PACTware/DTM

Maintenance

Reaction when malfunc-

tions occur

Procedure for fault recti-

cation

Check 4 … 20 mA signal

(level measurement)

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 87 88

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