APC AXFA11G user manual Conditions of Communication Line, Communication Line Requirements

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8. OPERATION VIA HART COMMUNICATOR

8.1 Conditions of Communication Line

8.1.1Interconnectwion between AXFA11 and HART Communicator

I +

I -

AXFA11

The HART Communicator can interface with the AXFA11 from the control room, the AXFA11 site, or any other wiring termination point in the loop, provided there is a minimum load resistance of 230  between the connection and the receiving instrument. To communi- cate, it must be connected in parallel with the AXFA11, and the connections must be non- polarized. Figure 8.1.1 illustrates the wiring connections for a direct interface at the AXFA11 site. The HART Communicator can be used for remote access from any terminal strip as well.

 

 

 

Control room

 

4 to 20 mA DC signal line

Terminal board

 

 

 

 

Relaying

 

 

 

 

 

 

 

 

 

 

 

 

terminals

 

 

 

 

 

Receiving instrument

 

 

 

load resistance:

 

 

 

230 Ω to 600 Ω

 

 

HART

HART

 

HART

Communicator

Communicator

 

Model 275

Model 275

Communicator

 

 

Model 275

F0802.EPS

Figure 8.1.1 Interconnection Diagram

8.1.2Communication Line Requirements

Specifications for Communication Line:

 

 

Load resistance:

230 to 600  (including cable resistance)

Minimum cable size: 24 AWG, (0.51 mm diameter)

Cable type:

Single pair shielded or multiple pair with overall shield

Maximum twisted-pair length:

6,500 ft (2,000 m)

Maximum multiple twisted-pair length: 3,200 ft (1,000 m)

Use the following formula to determine cable length for a specific application:

L =

65⋅ 106

–

(Cf+10,000)

 

(R⋅ C)

 

C

 

 

where:

L = length in feet or meters

 

 

 

 

R = resistance in ohms, current sense resistance

 

 

 

 

C = cable capacitance in pF/ft or pF/m

 

 

 

 

Cf = 50,000 pF

8-2

IM 01E20C01-01E

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Contents Users ManualAXFA11G Contents Operation VIA Hart Communicator Revision Record Safety and Modification Precautions IntroductionWarranty Using the Magnetic Flowmeter SafelyGuarantee will not apply in the following cases Combination Remote Flowtubes Handling Precautions Checking Model and SpecificationsAccessories Storage PrecautionsInstallation Installation LocationMounting Surface Mounting Wall MountingInch Pipe Mounting Panel MountingInch pipe Mounting fixture Washer Clamp screw Unit mm approx. inch Panel cutout 203 Mounting fixture 172Wiring Wiring PrecautionsDedicated Signal Cable Axfc CablesWiring Ports Excitation Cable/Power Cable/Output CableUnit mm approx. inch Crimp Terminal On the converter sideWhen there are no particular optional specifications Wiring using waterproof glandsConduit Wiring Plastic glandTerminal Configuration Wiring ConnectionsRemoving Cover Precautions for Wiring of Power Supply Cables DC Power ConnectionWiring the Remote Flowtube with the AXFA11 Converter Axfc Dedicated signal cable Excitation cableGrounding Protective grounding terminalsConnecting to External Instru- ments To 20 mA DC Current OutputPulse Output Status InputStatus Output / Alarm Output 13 Status Output ConnectionSetting switch operations Operating Panel Configuration and FunctionsData display area Content Display itemsReversed-character indication NoneDisplay Unit Setting Methods Display Mode → Setting ModeSetting Mode To Parameter Search Mode Setting Mode Parameter Setting ProcedureSetting Example for Selection-Type Data Flow rate units Sub-item Current unit setting Sub-item Parameter Search ModeB21 Base Flow Unit Parameter Sub-itemSetting Example for Numeric-Type Data Flow rate span Setting Mode ConditionMajor Item Parameter Search Mode Setting mode B23 Flow SpanSetting Example for Alphanumeric-Type Data Tag number Setting Mode ConditionSub-item Parameter Search Mode Major item Incorrect settingSub-item Major item Search Mode Selection CModified value Parameter Description Item B Menu B Easy Setup items Item a Menu a Display itemsName Data range Default value Units Description Display unitIndicated item Item C Menu C Basic Setting items Name Data range Position Default value Units Display unitItem D Menu D Total Setting items Default value Units Display unitName Data range Position Default value Display unit NameItem E Menu E Pulse Setting items Item F Menu F Status Functions Setting itemsItem G Menu G Alarm Setting items ALM-SETTING ALM HYSALM OUT ACT ALM-SIG OverItem H Menu H Display Setting items Item J Menu J Auxiliary Function Setting itemsItem K Menu K Diagnostic Function Setting items Units Display unitItem N Menu N Loop Test Setting items Item P Menu P Parameter Protection itemsMenu B Easy Setup items Data RangeExample When 1000 m3/h is set for B23/C42 Flow Span Unit/P 10-9 FU u Unit/P 10-6 FU Pulse/sDescription Menu C Basic Setting items B41/H11 Display Select2 and B42/H12 DisplayMeter Factor Settings Menu D Total Setting items C47 User Span Select Selection of the useC49 Flow User Span Is set forB22/C41 Base Time UnitTOTAL, and A32 DIF Total when Brain F13Flow Unit Is set forB22/C41 Base TimeSetting for E20 Pulse Active Mode Menu E Pulse Setting itemsE20 Pulse Active Mode Menu F Status Functions Setting items Setting Function DescriptionSwitch Lower and D24 Ttl Switch Upper G33 Alm-HH/LL to YesNo Function No input function Val UpperMultiple ranges setting Multiple Ranges Setting Automatic multiple ranges switchingStatus Output for Automatic Multiple Ranges Switching 1 Status Output for Automatic Multiple Ranges SwitchingParameter setting sequence For automatic multiple ranges switchingF14 SO1/2 Active Mode F10 SO1 Function F11 SO2 Function2 Multiple Ranges Switching via External Status Input F15G10 Low Alarm Low alarm setting Menu G Alarm Setting itemsG11 High Alarm High alarm setting High High Alarm 100 High Alarm100 High Alarm Instantaneous flow rate Low Low Alarm Time t Output Example100 85% 75% High Alarm 35% Low Alarm100 25%Setting Function ExampleG22 4-20mA Burn Out Display of the current ClosedOn OpenOffG41 Alm Record1 Alarm record1 Alarm ItemsG43 Alm Record2 Alarm record2 G45 Alm Record3 Alarm record3Menu J Auxiliary Function Setting items Setting range 0 to 10% HysteresisFunction or Determining rate limit value and dead timeExample 1 Step input Example 2 Slurry noiseJ31 Power Frequency Menu K Diagnostic Function Setting itemsK10 Adhesion Check Setting of adhesion Power Supply Code 100 to 240 V AC or 100 to 120 V DCAdhesion Diagnostic Function Menu M Automatic Zero Adjustment Function Setting itemsMenu N Loop Test Setting items SO1 Function or F11 SO2 Function, thenN11 Test Output Value Setting for test output Default setting EnableMenu P Parameter Protection items Write Protect functionDefault setting After password settingDisplay and output condition for process alarms G20 Alm Out Act Mode Setting of the activeOut Act Mode Display and output condition for setting alarm occurrences Alarm description SelectionTotali Pulse Display Alarm Output UnitAlarms & Warning Messages K12, K13 and K14 are correct Operation VIA Brain Terminal BT200 BT200 Basic OperationsKey Descriptions Key Layout and DisplayFunction Keys Command FunctionKey-in Sequence Data update and upload/ download function of BT200 AXFA11 Operation Using a BT2001 BT200 Connection Parameter Setting Using a BT200 3 BT200 Screens & Flow Rate Data DisplayMoved to B Easy Setup 1 BT200 Setting of Selection-Type Data Flow rate unitsB21 Flow UNIT, press 2 BT200 Setting of Numeric-Type Data Flow rate span B23 Flow SPAN, pressTo C Basic Setup 3 BT200 Setting of Alphanumeric-Type Data Tag numberMoved to C Basic Setup Operation VIA Hart Communicator Specifications for Communication Line Conditions of Communication LineInterconnectwion between AXFA11 and Hart Communicator Communication Line RequirementsBasic Operation of the Hart Communicator Model Keys and FunctionsCalling Up Menu Addresses DisplayKey Operation Entering, Setting and Sending Data Parameter ConfigurationParameters Data RenewingSetting Parameters Checking for ProblemsExample of Setting Selection-Type Data Base Flow Unit Example of Setting Numeric-Type Data PV Span PV SpanExample of Setting Alphanumeric-Type Data Tag Number DisplayExample 1 of Other Settings Meter Factor Select MF SetSelect Power Frequency Example 3 of Other Settings Trim Analog Output TrimReturning fld dev to original output appears Select the Scaled D/A trim Returning fld dev to original output appears Example 4 of Other Settings Burst Mode Setting of Burst ModeExiting Burst Mode Example 5 of Other Settings Multidrop ModePolling Exiting Multidrop Mode Example 6 of Other Settings Write ProtectionSetting Password Open Wrt Protect Menu in the Hot key MenuChanging Password Enable Wrt 10minJoker password and Software Seal Other Functions and OperationsMenu Tree On nextE12 J24 J30 P22 P23 Pre-operation Zero Adjustment Actual OperationZero Adjustment Using Display Unit Switches Selection D Major item Sub- item selection DZero Adjustment via External Status Input Ext Auto Zero Maintenance Components ReplacementDisplay Unit Replacement Fuse ReplacementSetting of Switches Amplifier ReplacementSetting of Burnout Switch Output Setting Pins for BurnoutSetting of Write Protect Switch 4 Switch ConfigurationTroubleshooting No IndicationUnstable Zero StartDisagreement Between Indication and Actual Flow Outline 65 10 Cf 10,000How to Set Parameters FunctionsStandard Performance Maximum Power Consumption Safety Requirement StandardsPower Supply Power supply code Size 2200 mm 88 in. to 2600 mm 104Accessories Optional Specifications for AXFA11 Remote Converter Terminal WiringRemote Converter AXFA11G Surface mountingRemote Converter AXFA11G /RK AM11 Replacement Bracket General tolerance in the dimensional outline drawingDedicated Signal Cable AXFC-4-L AXFC-0-LRevision Record Edition Date Revised item
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