Mts 318 Load Unit Manuel d'utilisateur Page 1

be certain.mModel 318.10Model 318.25Model 318.50318 Load UnitProduct Information100-183-837 B

318 Load Unit10Technical SupportProblem Submittal Form in MTS ManualsUse the Problem Submittal Form to communicate problems you are experiencing with

318 Load Unit100Routine Maintenance Overview ChecklistMaintenance252 Servovalve: Maintenance OverviewMaintaining the Series 252 Servovalves typically

Routine Maintenance Overview Checklist318 Load Unit Maintenance101Procedure To replace the filter element, perform the following procedure. Care shoul

318 Load Unit102Routine Maintenance Overview ChecklistMaintenanceD. Lightly lubricate the filter with clean hydraulic fluid and insert the filter into

Routine Maintenance Overview Checklist318 Load Unit Maintenance103During the servovalve mechanical null adjustment procedure, the actuator must be abl

318 Load Unit104Routine Maintenance Overview ChecklistMaintenanceExcessive torquing may shear off the adjustor pin eccentric. Do not apply more than 1

Routine Maintenance Overview Checklist318 Load Unit Maintenance105G. Using the offset wrench, loosen (but do not remove) the self-locking nut.Mechanic

318 Load Unit106Routine Maintenance Overview ChecklistMaintenance

Servohydraulic Load Frame Maintenance and Service Logs107Servohydraulic Load Frame Maintenance and Service LogsContents 8 Hours/Daily 10840 Hours/W

1088 Hours/DailyServohydraulic Load Frame Maintenance and Service Logs8 Hours/Daily8 Hours/Daily Service Interval RecommendationCHECK ACTUATOR PLATEN

40 Hours/WeeklyServohydraulic Load Frame Maintenance and Service Logs10940 Hours/Weekly40 Hours/Weekly Service Interval RecommendationCHECK HOSES/CABL

318 Load Unit Preface11PrefaceBefore You BeginSafety first! Before you attempt to use your MTS product or system, read and understand the Safety manua

11080 Hours/BiweeklyServohydraulic Load Frame Maintenance and Service Logs80 Hours/Biweekly80 Hours/Biweekly Service Interval RecommendationBIONIX LUC

500 Hours: Crosshead and FrameServohydraulic Load Frame Maintenance and Service Logs111500 Hours: Crosshead and Frame500 Hours Service Interval Recomm

112500 Hours: ActuatorServohydraulic Load Frame Maintenance and Service Logs500 Hours: Actuator 500 Hours Service Interval RecommendationCURSORY CHECK

500 Hours: HSMServohydraulic Load Frame Maintenance and Service Logs113500 Hours: HSM500 Hours Service Interval RecommendationCURSORY CHECK OF HYDRAUL

114500 Hours: Hoses and CablesServohydraulic Load Frame Maintenance and Service Logs500 Hours: Hoses and Cables500 Hours Service Interval Recommendati

500 Hours: Overall Complete SystemServohydraulic Load Frame Maintenance and Service Logs115500 Hours: Overall Complete System500 Hours Service Interva

116500 Hours: GripsServohydraulic Load Frame Maintenance and Service Logs500 Hours: Grips500 Hours Service Interval RecommendationCURSORY CHECK OF GRI

1000 HoursServohydraulic Load Frame Maintenance and Service Logs1171000 Hours 1000 Hours Service Interval RecommendationALL 500 HR MAINTENANCE PROCEDU

1182000 Hours: Annual MaintenanceServohydraulic Load Frame Maintenance and Service Logs2000 Hours: Annual Maintenance2000 Hours Service Interval Recom

318 Load Unit12ConventionsPrefaceConventionsDocumentation ConventionsThe following paragraphs describe some of the conventions that are used in your M

mMTS Systems Corporation14000 Technology DriveEden Prairie, Minnesota 55344-2290 USAToll Free Phone: 800-328-2255(within the U.S. or Canada)Phone: 952

Conventions318 Load Unit Preface13Hypertext links The electronic document has many hypertext links displayed in a blue font. All blue words in the bod

318 Load Unit14ConventionsPreface

318 Load Unit Introduction15IntroductionLoad Unit: OverviewThe Load Unit is the primary structure for most materials testing. It is a stand-alone test

318 Load Unit16IntroductionWhat youneed to knowMTS Systems Corporation assumes that you know how to use your controller. See the appropriate manual fo

318 Load Unit Introduction17318 Load Unit: Component IdentificationComponent DescriptionsITEM COMPONENT DESCRIPTION1 CrossheadMoves the up and down th

318 Load Unit18Introduction318 Load Unit: Component DescriptionThe load unit is a stand alone testing structure. It consists of the following componen

318 Load Unit Introduction19Load frame The load frame is the basic structure which provides the reaction mass for the force train. The base of the loa

Copyright information © 2007, 2009 MTS Systems Corporation. All rights reserved.Trademark information MTS is a registered trademark of MTS Systems Cor

318 Load Unit20IntroductionLVDT The LVDT measures the linear actuator’s travel. The LVDT consists of a transformer with one primary and two secondary

318 Load Unit Introduction21Force Ratings The Series 318 Load Units include other products. The following table lists specifications from several prod

318 Load Unit22IntroductionFor the most accurate high frequency test results, use a load unit with a fatigue rating that is larger than its actuator’s

318 Load Unit Introduction23Stiffness GraphA - D overall frame 0.38 mm 0.015 in 0.58 mm 0.023 in 0.66 mm 0.026 inSpring rates2.6 x 108 N/m(1.5 x 106 l

318 Load Unit24IntroductionSeries 661 Force Transducer: SpecificationsThe force transducer used with this system is a Series 661 Force Transducer. The

318 Load Unit Introduction25Dimensions The following dimensions are rounded off to the nearest millimeter or eight-inch.661.20-01 25 kN (5.5 kip)M27 x

318 Load Unit26Introduction318 Load Unit: Dimensions318.10B Load Unit DimensionsStandard column lengths indicatedNote: Dimensions are inches(mm)Weigh

318 Load Unit Introduction27318.25B Load Unit DimensionsStandard column lengths indicatedNote: Dimensions are inches(mm)Standard column lengths indic

318 Load Unit28Introduction318.50B Load Unit Dimensions Standard column lengthsNote: Dimensions are(mmWeight: 4200 lbs (1900 kg) is normalmaximum wei

318 Load Unit Introduction29318.10B Load Unit with Crosshead Actuator DimensionsStandard column lengthsStandard 6" (152.5 mm) actuator stroke ind

318 Load Unit Contents3ContentsTechnical Support 7How to Get Technical Support 7Before You Contact MTS 7If You Contact MTS by Phone 9Probl

318 Load Unit30Introduction318.25B Load Unit with Crosshead Actuator DimensionsStandard column lengths indicatedStandard 6" (152.5 mm) actuator s

318 Load Unit Introduction31318.50B Load Unit with Crosshead Actuator DimensionsStandard column lengthsStandard 6" (152.5 mm) actuator stroke ind

318 Load Unit32Introduction

318 Load Unit Safety33SafetyGeneral Safety PracticesThis section provides information about safety issues that pertain to servohydraulic systems in ge

318 Load Unit34SafetyIf you have system related responsibilities (that is, if you are an operator, service engineer, or maintenance person), you shoul

318 Load Unit Safety35Locate and readhazard placards/labelsFind, read, and follow the hazard placard instructions located on the equipment. These plac

318 Load Unit36SafetyKeep bystanderssafely awayKeep bystanders at a safe distance from all equipment. Never allow bystanders to touch specimens or equ

318 Load Unit Safety37Observe the following safety practices when you work with high-pressure air or gases:• When you charge an accumulator, follow al

318 Load Unit38SafetyOn rare occasions, a fastener can fail even when it is correctly installed. Failure usually occurs during torquing, but it can oc

318 Load Unit Safety39Provide adequatelightingEnsure adequate lighting to minimize the chance of operation errors, equipment damage, and personal inju

318 Load Unit4ContentsInstallation 47318 Load Unit: Unpack Upright Configuration 47318 Load Unit: Unpack Horizontal Configuration 49318 Load

318 Load Unit40SafetyDo not disturb sensors Do not bump, wiggle, adjust, disconnect, or otherwise disturb a sensor (such as an accelerometer or extens

318 Load Unit Safety41Hazard IconsFollowing are the hazard icons used on the MTS products.ICON DESCRIPTIONMoving parts; pinch points. Keep clear of ar

318 Load Unit42Safety318 Load Unit: Hazard LabelsThis section provides information on hazard labeling. Part numbers are provided should replacement la

318 Load Unit Safety43Base AssemblyITEM PART NUMBER DESCRIPTION1045-384-101 Warning. High force moving parts. Can cause severe injury or equipment dam

318 Load Unit44SafetyCylinder AssemblyITEM PART NUMBER DESCRIPTION1037-588-801 Identification label. Includes model number, serial number, assembly nu

318 Load Unit Safety45318 Load Unit: Crush Point HazardsIt is important to stay clear of any potential crush points when the system is operating. Know

318 Load Unit46Safety

318 Load Unit Installation47Installation318 Load Unit: Unpack Upright Configuration1. Unpack the load unit.A. Remove the shipping container (if used).

318 Load Unit48Installation2. Inspect the load unit for shipping damage.Look for the following:• Scratches in the load unit or lift cylinder columns•

318 Load Unit Installation49Airmounts can be overinflated and then explode.You can be seriously hurt if an airmount explodes, sending fragments flying

318 Load Unit Contents58 Hours/Daily 10840 Hours/Weekly 10980 Hours/Biweekly 110500 Hours: Crosshead and Frame 111500 Hours: Actuator 1

318 Load Unit50InstallationThe load unit is extremely heavy. The weight of the load unit can seriously hurt you and damage your load unit.Do not allow

318 Load Unit Installation51Scratches in the load unit columns can affect how the crosshead performs.Chains will scratch the columns.Use slings to lif

318 Load Unit52Installation2. Inspect the load unit for shipping damage.Look for the following:• Scratches in the load unit or lift cylinder columns •

318 Load Unit Installation53C. Once the load unit is upright, raise it slightly so that the pallet can be removed.Bringing the Load Unit UprightBefore

318 Load Unit54Installation• If your load unit has airmounts, inflate each airmount in 5 mm (0.20 in) increments to level the load unit.– Check the ai

318 Load Unit Installation55Prerequisite You must have either a cable assembly drawing of your test system, or you must know the system controller wel

318 Load Unit56Installation7. Return to the installation procedure.318 Load Unit: Connect HydraulicsThe procedure describes how to connect the load un

318 Load Unit Installation572. Fully loosen the manual crosshead locking bolts in the order shown in the following figure.Loosening the Manual Lock Bo

318 Load Unit58Installation

318 Load Unit Operation59OperationLoad Unit: Operation PrefaceThis section describes the load unit controls, crush point hazards, and procedures perfo

318 Load Unit6Contents

318 Load Unit60Operation318 Load Unit: Control ModuleThe controls for the 318 Load Unit are located on a module mounted to the front of the load unit.

318 Load Unit Operation61Crosshead Lift/Lock ControlsControls the movement and clamping of the crosshead. The left handle raises and lowers the crossh

318 Load Unit62Operation318 Load Unit: Crush Point HazardsIt is important to stay clear of any potential crush points when the system is operating. Kn

318 Load Unit Operation63Prerequisite You must have the necessary grips and/or fixturing installed. You must also have the controller set up to contro

318 Load Unit64OperationThe crosshead can slowly drift down the columns if the locks are turned off and when hydraulic pressure is turned off. The cro

318 Load Unit Operation65Before testing, ensure both grips are clamped and the specimen is secure.An insufficiently gripped specimen can cause specime

318 Load Unit66Operation4. Use the Crosshead Lift/Lock Controls to clamp the crosshead to its current position.Wait 30 seconds for the locks to fully

318 Load Unit Operation673. Remove the covers on the ends of the crosshead. The crosshead covers must be removed to access the manual locking bolts an

318 Load Unit68OperationThe crosshead is very heavy. A dropping crosshead can crush hands, damage grips, and smash specimens.Observe the following pre

318 Load Unit Operation69318 Load Unit: Adjust the Grips’ Clamp RateThe clamp rate determines how fast the grip can clamp a specimen.1. Ensure that bo

318 Load Unit Technical Support7Technical SupportHow to Get Technical SupportStart with yourmanualsThe manuals supplied by MTS provide most of the inf

318 Load Unit70Operation6. Fully install the dummy specimen in the lower grip.7. Cycle the lower grip control between the clamp and unclamp positions

318 Load Unit Operation715. Adjust the Pressure control for the desired hydraulic pressure.6. If you exceed the desired pressure setting, adjust the P

318 Load Unit72Operation

318 Load Unit Maintenance73Maintenance318 Load Unit: Maintenance Intervals 77318 Load Unit: Daily Inspections 78318 Load Unit: Clean the Columns

318 Load Unit74Routine Maintenance Overview ChecklistMaintenanceRoutine Maintenance Overview ChecklistRecommended service to be performed at each runn

Routine Maintenance Overview Checklist318 Load Unit Maintenance75Actuator Area is Dry MTS MTS MTS MTSActuator Platen Area is Clean MTS MTS MTS MTSPist

318 Load Unit76Routine Maintenance Overview ChecklistMaintenanceResponse to Full Stroke Waveform, Visual and AudibleMTS MTS MTS MTSValve Balance check

Routine Maintenance Overview Checklist318 Load Unit Maintenance77318 Load Unit: Maintenance IntervalsThe following table lists the recommended interva

318 Load Unit78Routine Maintenance Overview ChecklistMaintenance318 Load Unit: Daily InspectionsBefore the start of each day’s testing, do a quick ins

Routine Maintenance Overview Checklist318 Load Unit Maintenance79318 Load Unit: Prevent RustWhere you operate the load unit determines how often you t

318 Load Unit8Technical SupportKnow information fromprior technicalassistanceIf you have contacted MTS about this problem before, we can recall your f

318 Load Unit80Routine Maintenance Overview ChecklistMaintenance318 Load Unit: Maintain Airmount PressuresOptional inflatable airmounts reduce vibrati

Routine Maintenance Overview Checklist318 Load Unit Maintenance81318 Load Unit: Bleed the Hydraulic Lift CylindersBleed both hydraulic lift cylinders

318 Load Unit82Routine Maintenance Overview ChecklistMaintenanceThe crosshead can slowly drift down the columns if the locks are turned off and the hy

Routine Maintenance Overview Checklist318 Load Unit Maintenance837. Briefly turn the Lift Control to the lift crosshead position to pressurize the lif

318 Load Unit84Routine Maintenance Overview ChecklistMaintenanceB. Turn on high hydraulic pressure.C. If there is a specimen in the load unit, remove

Routine Maintenance Overview Checklist318 Load Unit Maintenance854. Use the Lock Control to lock the crosshead. Then torque the manual crosshead locki

318 Load Unit86Routine Maintenance Overview ChecklistMaintenance14. Move the crosshead, locking and unlocking it, to check for smooth operation.318 Lo

Routine Maintenance Overview Checklist318 Load Unit Maintenance87318 Load Unit: Align the Force TransducerThis section describes how to align a force

318 Load Unit88Routine Maintenance Overview ChecklistMaintenanceA. Position the actuator at midstroke.B. Set and enable the test controller’s upper an

Routine Maintenance Overview Checklist318 Load Unit Maintenance893. Check the alignment.In this step, you check the alignment between the force transd

318 Load Unit Technical Support9If You Contact MTS by PhoneYour call will be registered by a Call Center agent if you are calling within the United St

318 Load Unit90Routine Maintenance Overview ChecklistMaintenance4. Prepare the force transducer.Depending on the type of force transducer you have, pe

Routine Maintenance Overview Checklist318 Load Unit Maintenance91Preloader collar mountonlyThe following procedure applies only to force transducers t

318 Load Unit92Routine Maintenance Overview ChecklistMaintenanceB. Tighten to 5% of the torque recorded on the identification plate.Hex nut—Tighten th

Routine Maintenance Overview Checklist318 Load Unit Maintenance93C. Turn the load unit’s hydraulic pressure to off.Anti-Rotate Actuator—Tightening the

318 Load Unit94Routine Maintenance Overview ChecklistMaintenanceUse the following guidelines to determine when maintenance is required.• Check the pre

Routine Maintenance Overview Checklist318 Load Unit Maintenance95Prerequisite To prepare the accumulator for precharge check:Accumulators are pressuri

318 Load Unit96Routine Maintenance Overview ChecklistMaintenance2. With an open-end wrench, turn the locknut counterclockwise on the accumulator valve

Routine Maintenance Overview Checklist318 Load Unit Maintenance97Mixing gases can produce unpredictable results.Do not use another gas to precharge an

318 Load Unit98Routine Maintenance Overview ChecklistMaintenance244 Actuator: MaintenanceThe 244 Actuator is designed for extended periods of operatio

Routine Maintenance Overview Checklist318 Load Unit Maintenance99Mixing different brands of hydraulic fluid can contaminate your system. Contaminated