SBC PCD2.W745 Bedienungsanleitung

Document 26-796 | Edition ENG06 │ 2018-10-12

Manual

PCD2.W745 and PCD3.W745

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Content

0-1

0 Content

0.1 Document History ...........................................................................................0-2

0.2 Brands and trademarks .................................................................................0-2

1 Hardware

1.1 Introduction .....................................................................................................1-1

1.1.1 General ...........................................................................................................1-1

1.1.2 Function and application .................................................................................1-2

1.1.3 Main characteristics ........................................................................................1-2

1.1.4 Typical areas of use ........................................................................................1-2

1.2 Technical Data ................................................................................................1-3

1.3 Terminals and meaning of LEDs .....................................................................1-5

1.4 Presentation ...................................................................................................1-6

2 Conguration

2.1 Congurationofthemodule...........................................................................2-1

2.2 Operating modes ............................................................................................2-2

2.3 Conguration&connectionexamples............................................................2-4

3 Programming

3.1 Programming with Saia PCD®Classic ............................................................3-1

3.1.1 Programming with Saia PG5®FBoxes...........................................................3-1

3.1.2 Programming with FBs ...................................................................................3-4

3.2 Programmingwithseriesxx7.........................................................................3-7

A Appendix

A.1 Icons ...............................................................................................................A-1

A.2 ProgrammingexamplesforSaiaPCD®Classic systems ...............................A-2

A.3 Programmingexamplesforxx7series(inpreparation)..................................A-6

A.4 CongurationonPCD3.T760RIOModule.....................................................A-7

A.5 Contact ..........................................................................................................A-8

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Content

0-2

0.1 DocumentHistory

Date Version Changes Remarks

2003-12-01 pEN01 - Preliminary Edition

2005-05-01 EN01 - Published Edition

2005-09-19 EN02 - New picture:

1.4 Block diagram

2012-05-02 EN03 - RegistersforusinginPCD3.T760

2012-08-10 EN04 - AppendixA:Addedchapter4Congurationon

PCD3.T760RIOModule

2013-10-10 EN05 - New logo and new company name

2018-10-10 ENG06 Chapt. A- Newphonenumber(validfromFebruary2015)

0.2 Brandsandtrademarks

Saia PCD®and Saia PG5®

are registered trademarks of Saia-Burgess Controls AG.

STEP7®,SIMATIC®,S7-300®,S7-400®, and Siemens®are registered trademarks of

Siemens AG.

Technicalmodicationsarebasedonthecurrentstate-of-the-arttechnology.

Saia-Burgess Controls AG, 2018. ©Allrightsreserved.

Published in Switzerland

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Hardware

1-1

Introduction

1 Hardware

1.1 Introduction

1.1.1 General

ThePCDx.W745isaprecisionanalogueinputmodulefortemperaturemeasurement

application.Linearizationandeachkindofcompensationaswellasconversioninto

°C, °F and K are carried out on this module. The module has four input channels,

whichcanbeconguredindividually.

Supported temperature sensors are:

● Thermocouples–TCtypeJ,K

● Resistivetemperaturedetectors–RTD’stypePt100,Pt1000,Ni100,Ni1000

Further, the module supports all common measurement techniques:

ForRTDs:

● Twowiresensorconnection

● Threewiresensorconnection

● Fourwiresensorconnection

For Thermocouples:

● Internalcoldjunctioncompensation:Thesensorsaredirectlyconnectedtothe

module I/O terminal.

● Externalcoldjunctioncompensation:Anexternalisothermalblockcanbeused.

 Thetemperatureoftheexternaljunctionismeasuredusingchannel0.

Thecongurationofthefourinputchannelsisdonebysoftware.Everychannelcan

be used independently of the others.

Diagnostics:

ThemodulePCDx.W745providespowerfulsensordiagnostics:

● Overrangedetection

● Underrangedetection

● Linebreakdetection

● ShortcircuitdetectionforRTD’s

Galvanic separation:

ThemodulehasgalvanicseparationbetweenSaiaPCD®ground and the sensor

interface(500VDC).

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Hardware

1-2

Introduction

1.1.2 Functionandapplication

ThePCDx.W745moduleisusedtomeasuretemperaturesinprecisionandwide

temperature range applications.

On the module, a micro controller controls the acquisition of the input signals. De-

pendingthecongurationthecontrolleradjuststhemeasurementamplier,multi-

plexesthecurrentsourcestothesensors,andcontrolsthesamplingoftheinput

channels.

Thelinearizationcurvesforthesupportedtemperaturesensorsarestoredonthe

module.Therefore,theCPUcandirectlyreadtemperaturevaluesfromthemodule.

The powerful sensor diagnostics allows to detect wiring errors. So the module indi-

cateswhenasensorlineisbrokenornotconnected.Further,overrangeandunder-

range diagnostics indicates misuse of the chosen sensor type.

1.1.3 Maincharacteristics

● Highprecisiontemperatureacquisitionsystem

● GalvanicseparationbetweenSaiaPCD®ground and input interface

● Themodulesupportsabignumberofsensortypes

● ThermocouplesandRTDsonthesamemodule

● Fourinputchannels,software–congurable

● Built–inreferencejunctionforthermocouples

● Possibilitytouseexternalreferencejunction

● RTDmeasurementtechniques:2-,3-,4-Wireconnection

● 4inputclampsperchannel

1.1.4 Typicalareasofuse

● Temperatureregulation/supervisioninindustrialapplications

● Measurementofveryhightemperaturesusingthermocouples

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Hardware

1-3

Technical Data

1.2 TechnicalData

Technical specication

Allspecicationsat25°Cambienttemperature,unlessotherwisenoted.

Sensor types TC Type J TC Type K Pt100

Pt1000

Ni100

Ni1000

Input range for tempera-

ture sensors

-210…1200°C¹

DIN IEC 584

-270…1372°C¹

DIN IEC 584

-200…850°C

DINIEC751

-60…250°C

DINIEC43760

Measurement range -75mV…+75mV Pt/Ni100:0…600Ω

Pt/Ni1000:0…5000Ω

Resolution

0.1°C 0.1°C

2.5μV 0.01Ω(600Ωrange)

0.10Ω(5000Ωrange)

Measuring error in % of

fullscalevalue² 0.05 % 0.05 %

Measuring error

in °C

Alternativetothe“measuringerrorin%”specicationabove:

-100…+100°C:<0.4°C

-150…+500°C:<0.7°C

-150…+1000°C:<1.0°C

-100…+100°C:<0.3°C

-150…+500°C:<0.4°C

-200…+850°C:<0.5°C

Temperaturecoe󰀩cient

offullscalevalue² 10 ppm/K 80 ppm/K

Sampling time

per channel 250 ms

Measurement resolution 16 bit

50Hzrejection

60Hzrejection >75dB

> 60 dB

Line break detection    

Short circuit detection x x  

Linearization on Board

Compensation of cold

junctiontemperature on Board N/A

Coldjunctioninternal Yes³ N/A

Coldjunctionexternal Yes N/A

Connection techniques

forresistors(RTD’s) N/A

2-wire

3-wire

4-wire

Galvanicisolation 500 VDC between Saia PCD®and analogue inputs

¹)Forthermocouples,thefullmeasurementrangeiso󰀨ered.Thespecicationsofresolutionandaccu-

racyaregivenfortemperatureshigherthan-150°C.Forlowertemperaturesthan-150°C,thechar-

acteristicsofthermocouplesbecomeworse.Ifthermocouplesareusedinthisverylowtemperature

range,thetoleranceshouldbecalculatedusingthetolerancespecicationsforthe±75mVrangeand

the thermocouple characteristic.

²)Measuringerrorin%andtemperaturecoe󰀩cientspecicationsmadeforthemeasurementranges

±75mV,600Ω,5000Ω.

³)Technicaldataoftheinternalcoldjunctionarespeciedinthefollowingsection.

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Hardware

1-4

Technical Data

General specications

PCD2.W745 Temperaturemodule,supportsthermocouplestypeJ,Kand

RTD’stypePt100,Pt1000,Ni100,Ni1000

→SuitableforPCD1&PCD2systems

PCD3.W745 Temperaturemodule,supportsthermocouplestypeJ,Kand

RTD’stypePt100,Pt1000,Ni100,Ni1000

→SuitableforPCD3systems

Ambient temperature Operation: 0...+50°Cwithoutforcedventilation

Storage: -25...+85°C

Power supply: Noexternalpowersupplynecessary

Internal power consumption

from+5Vbus:

200 mA

Wiregauge: max.0.5mm²(AWG20)

WireStripping: Remove10mmofisolation

Internal reference junction (internal cold junction)

Thebuilt-inReferenceJunctionisusedwhenthermocouplesaredirectlyconnected

to the module.

Built-in Temperature sensor

Operating temperature range: 0…55°C

Resolution: 0.1°C

Measuring error at 25°C: 0.8°C

DriftoveroperatingTemperatureRange(0…55°C): 0.05°C/°C

Stabilization time: 5 min.

TheCPUsPCD1/2/3andthebasicunitsPCD3providethefollowinginternalsupply:

Type +5 V V+

PCD3.Mxxxx 600 mA 100 mA

PCD3.C200 1000 mA 100 mA

PCD3.T76x 650 mA 100 mA

PCD2.M1xx 1600 mA 200 mA

PCD2.M48x 2000 mA 200 mA

PCD1.M1xx 750mA 100 mA

UsersofPCDx.W745modulesareurgedtochecktheoverallcurrentconsumptionof

allmodulesinaPCD1/2/3andinanyC100orT76xexpansionunitstoensurethat

thismaximumisnotexceeded.

Whenworkingwithanexpansionunitandupto8W745modules,itisbettertoplace

thePCDx.W745modulesinthebaseunitandtoplug“normal”I/Omodulesintothe

expansionunit.Thiswilleliminateanyinuencessuchasapossiblevoltagedrop

overtheconnectingcablefromtheexpansionunittothebaseunit.

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Hardware

1-5

TerminalsandmeaningofLED’s

1.3 TerminalsandmeaningofLEDs

The I/O connector block is numbered from 0 to 16, beginning on the right hand side.

Error

Sensor Error

Run

Rth3+

Sens3+

Sens3-

GND

Rth2+

Sens2+

Sens2

GND

Rth 1+

Sens1+

Sens1

GND

Rth0+

Sens0+

Sens0

GND

Input 3

Input 2

Input 1

Input 0

GND

Label description

Name Description

RthX+ ConstantcurrentoutputforRTDmeasurement

SensX+ Positivelineofthedi󰀨erentialvoltageinput(Sense+)

SensX- Negativelineofthedi󰀨erentialvoltageinput(Sense–)

GND SensorGround,galvanicseparatedfromSaiaPCD®Ground

X:InputNumber0…3

Meaning of the LEDs:

Run:   TheRunLEDblinkswhenthedataacquisitionisrunning

Error: The Error LED indicates that the module

hasnovalidconguration.

Sensor Error: Indicates that at least one of the inputs detects:

   ● noconnection

   ● linebreak

   ● shortcircuit

Thismoduleincludescomponentsthataresensitivetoelectrostaticdischarges.

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Hardware

1-6

Presentation

1.4 Presentation

Assembled module

Bus interface

Bus connector

power supply

Optocoupler

A/D converter

Analogue circuitry

Input filtering (EMC)

Diagnostic LEDs

Input clamp terminal

Galvanic separated

Block diagram

EMC Filter

source

MUX

Temperature

sensor

CJC int.

Input

Multiplexer

Optocoupler

SPI interface

I/O Bus interfaceBus connector

DC/DC converter

Insulated power

supply

Constant current

Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745 │Document 26-796 ENG06 │ 2018-10-12

Conguration

2-1

Congurationofthemodule

2 Conguration

2.1 Congurationofthemodule

Themodulehasfourinputchannels,whichareindividuallycongurable:

Input ranges / sensor types:

Thermocouples(TC) TypeJ/KaccordingtoIEC584

ResistiveTemperaturedetectors(RTD) Pt100/Pt1000accordingtoIEC751

Ni100/Ni1000accordingtoDIN43760

Sensor type Range Output value Units

Type K

(NiCr-Ni) -270…+1372°C

-454…+2501°F

+3…+1645K

-2700…+13720

-4540…+25010

+30…+16450

1/10°C

1/10°F

1/10 K

TypeJ

(Fe-CuNi) -210…+1200°C

-346…+2192°F

+63…+1473K

-2100…+12000

-3460…+21920

+630…+14730

1/10°C

1/10°F

1/10 K

RTD

Pt100 -200…+850°C

-328…+1562°F

+73…+1123K

-2000…+8500

-3280…+15620

+730…+11230

1/10°C

1/10°F

1/10 K

Pt1000 -200…+850°C

-328…+1562°F

+73...+1123K

-2000…+8500

-3280…+15620

+730…+11230

1/10°C

1/10°F

1/10 K

Ni100 -60…+250°C

-76…+482°F

+213…+523K

-600…+2500

-760…+4820

+2130…+5230

1/10°C

1/10°F

1/10 K

Ni1000 -60…+250°C

-76…+482°F

+213…+523K

-600…+2500

-760…+4820

+2130…+5230

1/10°C

1/10°F

1/10 K

mV ±75mV -75…+75mV -30000…+30000 2.5μV*

Ohm 600Ω 0…600Ω 0…60000 10mΩ

5000Ω 0…5000Ω 0…50000 100mΩ

*mVrange:Outputvalue•2.5=voltageinμV

Connection & compensation techniques:

Connection / compensation techniques

RTD

Ohm

2–Wireconnection

3–Wireconnection

4–Wireconnection

TC Internalreferencejunction(CJCint.)

Externalreferencejunction(CJCext.)**

mV Voltage measurement using sense inputs

**Inthisoperatingmode,input0isusedtomeasurethetemperatureofthe

externalreferencejunction.

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