Yokogawa ADMAG AXR Uživatelský manuál stáhnout pdf (Strana 106)

<8. OPERATION VIA HART CONFIGURATION TOOL (HART 5)>

8-4

IM 01E30D01-01EN

8.7 Self-diagnostic Functions

Theself-diagnosticfunctionoftheAXRisexplained

in Section 6.5 “Alarm Functions.”

TheHARTcongurationtoolcanbeusedtorun

self-diagnostics on a device and check for incorrect

data settings.

(1) Using DD

The Self test and Status commands are available

for self-diagnostics. When Self test is run, the

display unit shows an error code and alarm

message if the device detects any illegal parameter

settings or functional faults.

• Procedure to call up the Self test display

DeviceSetup→Diagnosis/Service→Test/Status→

Self test

If no error is detected, “Self test OK” is displayed on

thecongurationtool.

Ifthespecicdiagnosticitemisknownforthe

check, you can directly call up the item by using the

Status command.

The status is categorized from 1 to 7. For details,

refer to the table at the end of 8.9.

Showanexamplebelowtoconrmthestatusof

Status group 1.

• Procedure to call up the Status display

DeviceSetup→Diagnosis/Service→Test/Status→

Status→Statusgroup1

If no error is detected, “Off” is displayed on the

congurationtool.

If there is an error, “On” is displayed on the

congurationtool,andacountermeasureforthat

error is necessary.

Example of display: Span > 10 m/s On

Span < 0.3 m/s Off

TTL > 10000 p/s Off

TTL < 0.0001 p/s Off

4-20 Lmt Err Off

(2) Using DTM

The Device Status commands are used for

self-diagnostics. When Device Status is run,

the display unit shows an error code and alarm

message if the device detects any illegal parameter

settings or functional faults.

• Procedure to call up the Device Status display

Device Status

If no error is detected, “Status: Normal” is displayed

onthecongurationtool.

Ifthespecicdiagnosticitemisknownforthe

check, you can directly call up the item by using the

Diagnostic List in the Device Status display.

The Diagnostic List is categorized to Device Status,

Hardware Failure, Transducer Status, Diag Status,

andConguration.

If no error is detected, color symbol which shows

Normal State is displayed on top of the error

message.

If color symbol which shows Error State is

displayed, there is an error and a countermeasure

for that error is necessary.

8.8 HARTSpecicFunctions

8.8.1 Trim Analog Output

This function is used to adjust the analog output at 4

mA and 20 mA with the D/A trim or Scaled D/A trim.

(1) D/A trim

Connect a calibration digital ammeter, and then

enter the read value of the ammeter for each

outputofAXR.

• Procedure to call up the D/Atrim display

DD DeviceSetup→Diagnosis/Service

→Adjustment→D/Atrim

DTM C

alibration→D/Atrim

(2) Scaled D/A trim

The output is adjusted by using a voltmeter or

other types of meters with 0 to 100% scale.

Example using a voltmeter:

 4mADC→1V

 20mADC→5V

Connect this meter, and enter the read value of

themeterforeachoutputofAXR.

• Procedure to call up the ScaledD/Atrim

display

DD DeviceSetup→Diagnosis/Service

→Calibration

→Analogoutputtrim→ScaledD/A

trim

DTM C

alibration→ScaledD/Atrim

(3) Clear D/A trim

When output is reset to the original value, clear

the D/A trim.

• Procedure to call up the ClearD/Atrim display

DD DeviceSetup→Diagnosis/Service

→Adjustment→ClearD/Atrim

DTM C

alibration→ClearD/Atrim

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