Vega VEGABAR 52 Foundation Fieldbus - climate compensat Bedienungsanleitung PDF herunterladen (Seite 42)

8Maintenanceandfaultrectication

VEGABAR 52 • Foundation Fieldbus - climate compensated

36789-EN-130321

Error Cause Rectication

Measured val-

ue on the display

and adjustment

module does not

correspond to the

value in the PLC

The menu item

"Display - Display

value

"isnotsetto

"AI-Out"

Check values and correct, if neces-

sary

Instrument does

not appear during

connection setup

ProbusDPcable

pole-reversed

Check cable and correct, if necessary

Incorrect termi-

nation

Check termination at the beginning

and end points of the bus and termi-

nate, if necessary, according to the

specication

Instrument not

connected to the

segment

Check and correct, if necessary

In Ex applications, the regulations for the wiring of intrinsically safe

circuits must be observed.

Error code Cause Rectication

E013 no measured value

available

– Exchange the instrument or send it

in for repair

E017 Adjustment span too

small

– repeatwithmodiedvalues

E036 no operable sensor

software

– Carry out a software update or send

instrument for repair

E041 Hardware error

– Exchange the instrument or send it

in for repair

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

stepsdescribedinchapter"Set up"mayhavetobecarriedoutagain.

8.3 Calculation of total deviation (according to

DIN16086)

The total deviation F

total

according to DIN 16086 is the sum of basic

accuracy F

perf

and longterm stability F

stab

. F

total

is also called maximum

practical deviation or utility error.

total

= F

perf

+ F

stab

perf

=√((F

)

+ (F

)

With:

•

total

: Total deviation

•

perf

: Basic accuracy

•

stab

: Long-term drift

•

:Temperaturecoecient(inuenceofmediumorambient

temperature)

•

: Deviation

Error messages via the

display and adjustment

module

Reactionafterfaultrecti-

cation

Total deviation

Fault message can also appear if the pressure is higher than the nominal

range.

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