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YOKOGAWA UT35A - User Manual

YOKOGAWA UT35A
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IM 05P01D31-11EN page 1/12
Contents
1. Safety Precautions
2. ModelandSufxCodes
3. How to Install
4. HardwareSpecications
5. HowtoConnectWires
6. TerminalWiringDiagrams
Introduction
ThankyouforpurchasingtheUT35A/UT32ADigitalIndicatingController.
ThisoperationguidedescribesthebasicoperationsoftheUT35A/UT32A.Theguide
shouldbeprovidedtotheenduserofthisproduct.
Be sure to read thisoperationguidebefore usingthe product in order to ensure
correct operation.
Fordetailsofeachfunction,refertotheelectronicmanual.Beforeusingtheproduct,
refertothetableofModelandSufxCodestomakesurethatthedeliveredproduct
isconsistentwiththemodelandsufxcodesyouordered.Alsomakesurethatthe
followingitemsareincludedinthepackage.
•DigitalIndicatingController(themodelyouordered) ..............................x1
• Set of Brackets ........................................................................................x1
•UnitLabel(L4502VZ) ..............................................................................x1
•TagLabel(L4502VE) ..............................................................................x1
•OperationGuide(thisdocument) ............................................................x6(A3size)
(InstallationandWiring,InitialSettings,Operations,andParameters)
l
TargetReaders
Thisguideisintendedforthefollowingpersonnel;
• Engineersresponsibleforinstallation,wiring,andmaintenanceoftheequipment.
• Personnelresponsiblefornormaldailyoperationoftheequipment.
1. Safety Precautions
Thefollowing symbolisused ontheinstrument.Itindicatesthepossibilityofinjury
to theuserordamagetotheinstrument, and signies that theuser must refer to
the user’smanualforspecial instructions. Thesamesymbol isused inthe user’s
manualonpagesthattheuserneedstoreferto,togetherwiththeterm“WARNING”
or“CAUTION.”
WARNING
Calls attention to actions or conditions that could cause serious
or fatal injury to the user, and indicates precautions that should be
taken to prevent such occurrences.
CAUTION
Calls attention to actions or conditions that could cause injury to
the user or damage to the instrument or property and indicates pre-
cautions that should be taken to prevent such occurrences.
AC
AC/DC
Theequipmentwhollyprotectedbydoubleinsulationorreinforcedinsulation.
Functionalgroundingterminals
(Donotusethisterminalasaprotectivegroundingterminal).
Note
Identiesimportantinformationrequiredtooperatetheinstrument.
n
Warning and Disclaimer
(1) YOKOGAWAmakesnowarrantiesregardingtheproductexceptthosestatedin
theWARRANTYthatisprovidedseparately.
(2) Theproductisprovidedonan"asis"basis.YOKOGAWAassumesnoliabilityto
anypersonor entityfor anyloss ordamage, director indirect,arisingfromthe
useoftheproductorfromanyunpredictabledefectoftheproduct.
n
Safety,Protection,andModicationoftheProduct
(1) Inordertoprotect thesystemcontrolled bythisproduct andtheproduct itself,
and toensuresafeoperation, observethesafety precautionsdescribed inthe
user’s manual. Useoftheinstrument in a manner notprescribed herein may
compromise the product's functions and the protection features inherent in the
device.Weassumenoliabilityforsafety,orresponsibilityfortheproduct'squality,
performanceorfunctionalityshouldusersfailtoobservetheseinstructionswhen
operatingtheproduct.
(2) Installation of protection and/or safety circuits with respect to a lightning
protector;protectiveequipmentforthesystemcontrolledbytheproductandthe
productitself;foolprooforfailsafedesignofaprocess orline usingthe system
controlledbytheproductortheproductitself;and/orthedesignandinstallation
ofotherprotectiveandsafetycircuitsaretobeappropriatelyimplementedasthe
customer deems necessary.
(3) Besuretouse thesparepartsapproved byYOKOGAWAwhenreplacing parts
orconsumables.
(4) Thisproductisnot designedormanufacturedtobe usedincriticalapplications
thatdirectlyaffect or threaten human lives. Suchapplications includenuclear
power equipment, devices using radioactivity, railway facilities, aviation
equipment, airnavigation facilities, aviation facilities,andmedical equipment.
If so used, it is the user’s responsibility to include in the system additional
equipmentanddevicesthatensurepersonnelsafety.
(5) Modicationoftheproductisstrictlyprohibited.
WARNING
l
Power Supply
Ensure that the instrument’s supply voltage matches the voltage
of the power supply before turning ON the power.
l
Do Not Use in an Explosive Atmosphere
Do not operate the instrument in locations with combustible
or explosive gases or steam. Operation in such environments
constitutes an extreme safety hazard. Use of the instrument in
environments with high concentrations of corrosive gas (H
2
S,
SO
X
, etc.) for extended periods of time may cause a failure.
l
Do Not Remove Internal Unit
The internal unit should not be removed by anyone other than
YOKOGAWA's service personnel. There are dangerous high
voltage parts inside. Additionally, do not replace the fuse by
yourself.
l
Damage to the Protective Construction
Operation of the instrument in a manner not specified in the
users manual may damage its protective construction.
CAUTION
This instrument is an EMC class A product. In a domestic environ-
ment this product may cause radio interference in which case the
user needs to take adequate measures.
2. ModelandSufxCodes
n
UT35A
[Style:S1]
Model Sufxcode
Optional
sufx
code
Description
UT35A
DigitalIndicatingController
(providedwithretransmissionoutputor15VDCloop
powersupply,2DIs,and3DOs)
(Powersupply:100-240VAC)
Type 1:
Basic
control
-0 Standard type
-1 Position proportional type
-2 Heating/coolingtype
Type 2:
Functions
0 None
1 2additionalDIs,2additionalDOs
2 5additionalDIs,5additionalDOs
Type 3: Open
networks
0 None
1
RS-485communication(Max.38.4kbps,2-wire/4-wire)
2 Ethernetcommunication(withserialgatewayfunction)
3 CC-Linkcommunication
4 PROFIBUS-DPcommunication
Displaylanguage(*1)
(Note)
-1 English
-2 German
-3 French
-4 Spanish
Casecolor(Note)
0 White(Lightgray)
1 Black(Charcoalgraylight)
Fixedcode -00 Always"-00"
Optionalsufxcodes
/LP 24VDClooppowersupply(*2)
/HA Heaterbreakalarm(*3)
/DC Powersupply24VAC/DC
/CT Coating(*4)
*1: English,German,French,andSpanishcanbedisplayedastheguidedisplay.
*2: The/LPoptioncanbespecifiedinthecombinationofType2code(anyof"0"or"1")and
Type3code(anyof"0"or"1".)
*3: The/HAoptioncanbespecifiedwhentheType1codeis“-0”or“-2”.
*4: Whenthe/CToptionisspecified,theUT35Adoesnotconformtothesafetystandards(UL
andCSA)andCEmarking.
Note:Thelastdigitofthedisplaylanguagecode(-x0)hasbeenchangedintothecasecolorcode.
n
UT32A
[Style:S1]
Model Sufxcode
Optional
sufx
code
Description
UT32A
DigitalIndicatingController(providedwithretrans-
missionoutputor15VDClooppowersupply,2DIs,
and3DOs)(Powersupply:100-240VAC)
Type 1:
Basic
control
-0 Standard type
-1 Position proportional type
-2 Heating/coolingtype
Type 2:
Functions
0 None
1
RS-485communication(Max.38.4kbps,2-wire/4-
wire)
2 2additionalDIsand2additonalDOs
Type 3:
Open networks
0 None
Displaylanguage(*1)
(Note)
-1 English
-2 German
-3 French
-4 Spanish
Casecolor(Note)
0 White(Lightgray)
1 Black(Charcoalgraylight)
Fixedcode -00 Always"-00"
Optionalsufxcodes
/LP 24VDClooppowersupply(*2)
/HA Heaterbreakalarm(*3)
/DC Powersupply24VAC/DC
/CT Coating(*4)
*1: English,German,French,andSpanishcanbedisplayedastheguidedisplay.
*2: The/LPoptioncanbespecifiedinthecombinationofType1code(anyof"-0"or"-1")
andType2code(anyof"0"or"1.")Additionally,whentheType2codeis"1",theRS-485
communicationis2-wiresystem.
*3: The/HAoptioncanbespecifiedwhentheType1codeis"-0"or"-2."
*4: Whenthe/CToptionisspecified,theUT32Adoesnotconformtothesafetystandards(UL
andCSA)andCEmarking.
Note:Thelastdigitofthedisplaylanguagecode(-x0)hasbeenchangedintothecasecolorcode.
n
Accessories (sold separately)
Thefollowingisanaccessorysoldseparately.
• LL50AParameterSettingSoftware
Model Sufxcode Description
LL50A -00 ParameterSettingSoftware
• TerminalCover
ForUT35A:ModelUTAP001;ForUT32A:ModelUTAP002
• User’sManual(A4size)
Note:User’sManualcanbedownloadedfromawebsite.
•User’sManual(CD-ROM),Model:UTAP003
Note:Containsallmanuals.
3. How to Install
n
Installation Location
The instrument should be installed in indoor locations meeting the following
conditions:
Instrumented panel
Thisinstrumentis designedtobe mounted inaninstrumentedpanel.Mountthe
instrumentinalocationwhereitsterminalswillnotinadvertentlybetouched.
Well ventilated locations
Mounttheinstrumentinwellventilatedlocationstopreventtheinstrument’sinter-
naltemperaturefromrising.
However,makesurethattheterminalportionsarenotexposedtowind.Exposure
to wind may cause the temperature sensor accuracy to deteriorate. To mount mul-
tipleindicating controllers, see theexternaldimensions/panelcutout dimensions
which follow.
If mounting otherinstruments adjacent totheinstrument, complywith
thesepanelcutoutdimensionstoprovidesufcientclearancebetweentheinstruments.
Locations with little mechanical vibration
Installtheinstrumentinalocationsubjecttolittlemechanicalvibration.
Horizontal location
Mounttheinstrumenthorizontallyandensurethatitislevel,withnoinclinationto
therightorleft.
Front panel
of controller
Keep this angle
within 30°
Rear of
controller
30°
Note
If theinstrumentismovedfroma locationwith low temperature and lowhumidity
toa placewithhightemperature andhighhumidity,orifthetemperaturechanges
rapidly, condensation will result. Moreover, inthe case of thermocouple inputs,
measurementerrorswillresult.Toavoidsuchasituation,leavetheinstrumentinthe
newenvironmentunderambientconditionsformorethan1hourpriortousingit.
Donotmounttheinstrumentinthefollowinglocations:
Outdoors
Locations subject to direct sunlight or close to a heater
Installtheinstrumentinalocationwithstabletemperaturesthatremainclosetoan
averagetemperatureof23°C.Donotmountitinlocationssubjecttodirectsunlight
orclosetoaheater.Doingsoadverselyaffectstheinstrument.
Locations with substantial amounts of oily fumes, steam, moisture, dust, or
corrosive gases
Thepresenceof oilyfumes, steam,moisture,dust,or corrosivegasesadversely
affectstheinstrument.Donotmounttheinstrumentinlocationssubjecttoanyof
thesesubstances.
• Areasnearelectromagneticeldgeneratingsources
Donotplacemagnetsortoolsthatgeneratemagnetismneartheinstrument.Ifthe
instrumentisusedinlocationsclosetoa strongelectromagneticeld generating
source,themagneticeldmaycausemeasurementerrors.
• Locationswherethedisplayisdifculttosee
TheinstrumentusesanLCDfor thedisplay unit,andthiscanbedifculttosee
fromextremelyobliqueangles.Mounttheinstrumentinalocationwhereitcanbe
seenasmuchaspossiblefromthefront.
• Areasclosetoammablearticles
Absolutelydonot placetheinstrumentdirectly onam-
mablesurfaces. Ifsuch acircumstanceisunavoidable
andtheinstrumentmustbeplacedclosetoaammable
item,provideashieldforitmadeof1.43mmthickplated
steel or 1.6 mm thick unplated steel with a space of at
least150mmbetweenitandtheinstrumentonthetop,
bottom,andsides.
Areas subject to being splashed with water
WARNING
Be sure to turn OFF the power supply to the controller before in-
stalling it on the panel to avoid an electric shock.
150 mm150 mm
150 mm
150 mm
150 mm150 mm
150 mm
150 mm
Operation
Guide
IM 05P01D31-11EN
UT35A/UT32A
Digital Indicating Controllers
Operation Guide
This operation guide describes installation, wiring, and other tasks required to make the
controller ready for operation.
2nd Edition : Jun. 2010
Installation and Wiring
n
Waste Electrical and Electronic Equipment (WEEE),
Directive 2002/96/EC
ThisisanexplanationofhowtodisposeofthisproductbasedonWasteElectrical
andElectronicEquipment(WEEE),Directive2002/96/EC.Thisdirectiveisonlyvalid
intheEU.
Marking
This product complies with the WEEE Directive (2002/96/EC)
markingrequirement.
This marking indicates that you must not discard this electrical/
electronic product in domestic household waste.
Product Category
With reference to the equipment types in the WEEE directive Annex 1, this
product is classified as a Monitoring and Control instrumentation product.
Donot disposeindomestichouseholdwaste. Whendisposing productsintheEU,
contactyourlocalYokogawaEuropeB.V.ofce.
www.yokogawa.com/ns
YOKOGAWA ELECTRIC CORPORATION
Network Solutions Business Division
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 JAPAN
YOKOGAWA CORPORATION OF AMERICA
Head office and for product sales
2 Dart Road, Newnan, Georgia 30265, USA
YOKOGAWA EUROPE B.V.
Headquarters
Euroweg 2, 3825 HD Amersfoort, THE NETHERLANDS
All Rights Reserved, Copyright © 2010 Yokogawa Electric Corporation

Questions and Answers

  • A
    Adrienne SmithAug 20, 2025
    What to do if the YOKOGAWA UT35A load factor is over 100%?
    • W
      William AllenAug 20, 2025
      If the YOKOGAWA Controller displays 'Load factor over 100%', it means the computation isn't completing within the control period (the load factor is 100% or more). To resolve this, you can either change the control period or reduce the number of steps in the ladder program.
  • A
    Abigail GibsonAug 22, 2025
    What to do if the YOKOGAWA UT35A load factor is over 200%?
    • K
      Kenneth GutierrezAug 22, 2025
      If the YOKOGAWA Controller shows 'Load factor over 200% (Forced end)', it indicates that computation isn't finishing within the control period (load factor is 200% or more). You should change the control period or decrease the number of steps for the ladder program.
  • M
    Miranda KingAug 25, 2025
    How to fix communication error on YOKOGAWA UT35A (RS-485 communication)?
    • M
      Matthew HendricksAug 25, 2025
      If the YOKOGAWA Controller shows a 'Communication error (RS-485 communication)', it could be due to framing parity error, buffer overflow, inter-character time-out, checksum error (in PC link communication with checksum), CRC check error (Modbus/RTU), or LRC check error (Modbus/ASCII). Check the communication parameters. The system should recover upon normal receipt. Hold down any key to stop blinking.
  • J
    Janet JordanAug 26, 2025
    What to do if YOKOGAWA UT35A Controller shows ladder calculation overflow?
    • Y
      yharrisAug 26, 2025
      If the YOKOGAWA Controller displays 'Ladder calculation overflow', it means the floating-point computation for the ladder calculation is infinite. To fix this, check the ladder program.
  • M
    Michelle GravesAug 27, 2025
    How to fix ladder program error on YOKOGAWA UT35A Controller?
    • M
      Mrs. Jennifer WilsonAug 28, 2025
      If the YOKOGAWA Controller shows 'Ladder program error' because the ladder program is corrupted, download the ladder program again. If the error persists, contact us for repair, as there may be a fault.
  • E
    ewatersAug 29, 2025
    What to do if YOKOGAWA Controller auto-tuning times out?
    • K
      Keith HutchinsonAug 29, 2025
      If the YOKOGAWA Controller shows 'Auto-tuning time-out' because auto-tuning hasn't finished 24 hours after tuning started, check the process. Hold down any key to clear the error indication.
  • D
    Donna DuncanAug 31, 2025
    How to resolve communication error during coordinated operation in YOKOGAWA UT35A?
    • C
      Catherine SmithAug 31, 2025
      If the YOKOGAWA Controller displays 'Communication error (coordinated operation)' due to inconsistency of loop between coordinated master and slaves, check the communication parameters. The system should recover upon normal receipt. Change from remote to local mode to stop blinking.
  • J
    jonesdustinSep 2, 2025
    What causes PV input over-scale error on YOKOGAWA Controller?
    • M
      Ms. Elizabeth SmithSep 2, 2025
      If the YOKOGAWA Controller shows 'PV input over-scale', it means the PV input is outside the range of -5 to 105%. Check the analog input value or the ladder program.
  • R
    Roy WileySep 4, 2025
    What to do if YOKOGAWA Controller has valve position automatic adjustment error?
    • R
      Rodney CastilloSep 4, 2025
      If the YOKOGAWA Controller displays 'Valve position automatic adjustment error' because the fully-closed valve position is equal to or larger than the fully-open valve position after automatic valve position adjustment, check the wiring and the valve. Hold down any key to erase the error indication.
  • J
    Jennifer Anderson DVMSep 6, 2025
    How do I fix a user profile error on a YOKOGAWA Controller?
    • C
      Christopher WebbSep 6, 2025
      If the YOKOGAWA Controller displays 'User profile error' because the user profile is corrupted, download the user profile again.

Summary

Introduction to UT35 A;UT32 A Controllers

Safety Precautions

Essential safety guidelines and warnings for operating the controller to prevent injury or damage.

Model and Suffix Codes

Details on identifying controller models and their configurable options for correct selection.

How to Install

Instructions and considerations for physically installing the instrument in a suitable location.

Accessories Sold Separately

Information on optional accessories available for purchase to enhance controller functionality.

WEEE Directive Compliance

Guidelines for the proper disposal of electrical and electronic equipment according to the WEEE directive.

Hardware Specifications

Universal and Analog Input Specifications

Details on the standard universal input capabilities and analog input types, ranges, and scaling.

Response Time and Output Specifications

Information on response times and specifications for various output types.

Retransmission, Loop Power, and Heater Break Specs

Specifications for retransmission outputs, 24 V DC loop power supply, and heater break alarm.

Installation and Wiring Details

Safety, EMC Standards, and Environmental Conditions

Compliance with safety standards, EMC, environmental conditions, and CE marking requirements.

Recommended Terminal Lugs and Wiring Connections

Guidelines for using appropriate terminal lugs and general wiring connection practices.

Terminal Wiring Diagrams

UT35 A E1;E4 Terminal Wiring

Wiring diagrams for the E1 and E4 terminal areas of the UT35A controller.

UT32 A Control and Power Wiring

Wiring diagrams for UT32A covering control outputs, inputs, and power connections.

Communication and Special Function Wiring

Wiring details for communication interfaces like RS-485, Ethernet, PROFIBUS-DP, and CC-Link.

Controller Operation Basics

Display Parts and Key Functions

Identification and explanation of the controller's display elements, indicators, and operational keys.

Initial Setup Procedure

Flowchart and steps for the initial setup process, including quick setting.

Quick Setting for Input and Output

Streamlined process for setting basic control type, input, and output functions for quick operation.

Parameter Configuration Guide

Control Type, Input, and Output Parameters

Settings for control type, input function, and output function parameters.

Alarm Type and Setpoint Configuration

Configuration of alarm types and alarm setpoints for monitoring and event notification.

Automatic Valve Position Adjustment

Procedure for automatically adjusting valve position for position proportional control.

Controller Operations Menu

Monitoring Operation Displays

Displays available for monitoring operation status, PV, and SP values.

Setting Target Setpoint (SP)

Procedure for setting the target setpoint (SP) for controller operation.

Auto-tuning PID Control Procedures

Performing and canceling auto-tuning for optimizing PID control parameters.

Switching Operation Modes (AUTO;MAN, RUN;STOP, REM;LCL)

Methods for switching between AUTO/MAN, RUN/STOP, and REM/LCL operational modes.

Error Handling and Troubleshooting

Manual Output Control and Error Diagnosis

Manual manipulation of control output and diagnosis of errors occurring at power-on.

Power-On and Operation Errors

Identification and resolution of errors that occur during controller power-on and operation.

Troubleshooting Flowchart

A step-by-step flowchart to diagnose and resolve operational issues with the controller.

Detailed Parameter Reference

Parameter Menu Navigation and Control Settings

Overview of parameter menus and settings for control functions, PV input, and range.

PV Input, Range, and Tuning Parameters

Configuration of PV input types, units, ranges, and parameters for tuning and zone control.

Zone Control and Ladder Program Parameters

Parameters related to zone control logic and ladder program settings.

Specific Parameter Settings

Key Lock, DI, and DO Function Settings

Settings for key lock functions, DI registration, and DO function assignments.

System, Numbering, and Display Level Settings

Configuration for system settings, DI numbering, and parameter display levels.

Alarm, Error, and Version Confirmation Parameters

Settings for alarm functions and confirmation of error status and software version.

YOKOGAWA UT35A Specifications

General IconGeneral
BrandYOKOGAWA
ModelUT35A
CategoryController
LanguageEnglish

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