MTS 248 User Manual

be certain.

Series 248 Actuators Product Information

Model 248.01 Model 248.02 Model 248.03 Model 248.04 Model 248.05 Model 248.11 Model 248.12 Model 248.21

011-562-101 J

Trademark information MTS is a registered trademark of MTS Systems Corporation within the United

States. Theis trademark may be protected in other countries.

Molykote is a registered trademark of Dow Chemical Company.

DTE is a registered trademark of Mobil Corporation.

Tellus is a registered trademark of Shell Oil Corporation.

All other trademarks or service marks are property of their respective owners.

Publication information

MANUAL PART NUMBER PUBLICATION DATE

115621-00 A October 1985

115621-01 A April 1986

115621-01 B December 1988

115621-01 C July 1992

115621-01 D October 1993

115621-01 E October 1998

011-562-101 F February 1999

011-562-101 G July 1999

011-562-101 H March 2008

011-562-101 J September 2008

Contents

Technical Support 5

How to Get Technical Support 5

Before You Contact MTS 5

If You Contact MTS by Phone 6

Problem Submittal Form in MTS Manuals 7

Preface 9

Before You Begin 9

Conventions 10

Documentation Conventions 10

Introduction 13

Series 248 Actuator Component Identification 15

Series 248 Actuator Functional Description 16

About Actuator Operation 17

About LVDT Operation 18

Hydrostatic Bearing Capillaries 19

Static Support Assembly 19

Specifications and Dimensions 20

Actuator ID 20

Series 248 Actuator Force Ratings 20

Series 248 Actuator Dimensions 21

Open LVDT Housing Specifications 23

Pedestal Base Specifications 24

Static Support Dimensions 26

Safety 27

Hazard Placard Placement 27

Series 248 Actuator Product Information Contents

Installation 31

How to Install a Fixture to the Actuator 32

How to Connect Cables to Actuator 33

How to Connect Hydraulics to the Actuator 34

Operation 35

About the Static Support Assembly 36

How to Precharge the Static Support 37

How to Relieve Nitrogen Pressure from the Static Support 38

Calculate Static Support Precharge 38

How to Precharge the Static Support 39

Maintenance 43

Contents

Series 248 Actuator Product Information

Technical Support

How to Get Technical Support

Start with your

manuals

Technical support

methods

MTS web site

www.mts.com

E-mail techsupport@mts.com

Telephone MTS Call Center 800-328-2255

Fax 952-937-4515

The manuals supplied by MTS provide most of the information you need to use and maintain your equipment. If your equipment includes MTS software, look for online help and README files that contain additional product information.

If you cannot find answers to your technical questions from these sources, you can use the internet, e-mail, telephone, or fax to contact MTS for assistance.

MTS provides a full range of support services after your system is installed. If you have any questions about a system or product, contact MTS in one of the following ways.

The MTS web site gives you access to our technical support staff by means of a Technical Support link:

www.mts.com > Contact Us > Service & Technical Support

Weekdays 7:00 A.M. to 5:00 P.M., Central Time

Please include “Technical Support” in the subject line.

Before You Contact MTS

MTS can help you more efficiently if you have the following information available when you contact us for support.

Know your site

number and system

number

Series 248 Actuator Product Information Technical Support

The site number contains your company number and identifies your equipment type (material testing, simulation, and so forth). The number is usually written on a label on your MTS equipment before the system leaves MTS. If you do not have or do not know your MTS site number, contact your MTS sales engineer.

Example site number: 571167

When you have more than one MTS system, the system job number identifies which system you are calling about. You can find your job number in the papers sent to you when you ordered your system.

Example system number: US1.42460

If You Contact MTS by Phone

Know information from

prior technical

If you have contacted MTS about this problem before, we can recall your file. You will need to tell us the:

assistance

• MTS notification number

• Name of the person who helped you

Identify the problem Describe the problem you are experiencing and know the answers to the

following questions:

• How long and how often has the problem been occurring?

• Can you reproduce the problem?

• Were any hardware or software changes made to the system before the

problem started?

• What are the model numbers of the suspect equipment?

• What model controller are you using (if applicable)?

• What test configuration are you using?

Know relevant

computer information

If you are experiencing a computer problem, have the following information available:

• Manufacturer’s name and model number

• Operating software type and service patch information

• Amount of system memory

• Amount of free space on the hard drive in which the application resides

• Current status of hard-drive fragmentation

• Connection status to a corporate network

Know relevant

For software application problems, have the following information available:

software information

• The software application’s name, version number, build number, and if

available, software patch number. This information is displayed briefly when you launch the application, and can typically be found in the “About” selection in the “Help” menu.

• It is also helpful if the names of other non-MTS applications that are

running on your computer, such as anti-virus software, screen savers, keyboard enhancers, print spoolers, and so forth are known and available.

If You Contact MTS by Phone

Your call will be registered by a Call Center agent if you are calling within the United States or Canada. Before connecting you with a technical support specialist, the agent will ask you for your site number, name, company, company address, and the phone number where you can normally be reached.

Technical Support

Series 248 Actuator Product Information

Problem Submittal Form in MTS Manuals

If you are calling about an issue that has already been assigned a notification number, please provide that number. You will be assigned a unique notification number about any new issue.

Identify system type To assist the Call Center agent with connecting you to the most qualified

technical support specialist available, identify your system as one of the following types:

• Electromechanical materials test system

• Hydromechanical materials test system

• Vehicle test system

• Vehicle component test system

• Aero test system

Be prepared to

Prepare yourself for troubleshooting while on the phone:

troubleshoot

• Call from a telephone when you are close to the system so that you can try

implementing suggestions made over the phone.

• Have the original operating and application software media available.

• If you are not familiar with all aspects of the equipment operation, have an

experienced user nearby to assist you.

Write down relevant

Prepare yourself in case we need to call you back:

information

• Remember to ask for the notification number.

• Record the name of the person who helped you.

• Write down any specific instructions to be followed, such as data recording

or performance monitoring.

After you call MTS logs and tracks all calls to ensure that you receive assistance and that action

is taken regarding your problem or request. If you have questions about the status of your problem or have additional information to report, please contact MTS again and provide your original notification number.

Problem Submittal Form in MTS Manuals

Use the Problem Submittal Form to communicate problems you are experiencing with your MTS software, hardware, manuals, or service which have not been resolved to your satisfaction through the technical support process. This form includes check boxes that allow you to indicate the urgency of your problem and your expectation of an acceptable response time. We guarantee a timely response—your feedback is important to us.

The Problem Submittal Form can be accessed:

• In the back of many MTS manuals (postage paid form to be mailed to MTS)

• www.mts.com > Contact Us > Problem Submittal Form (electronic form to

be e-mailed to MTS)

Series 248 Actuator Product Information Technical Support

Problem Submittal Form in MTS Manuals

Technical Support

Series 248 Actuator Product Information

Before You Begin

Preface

Before You Begin

Safety first! Before you attempt to use your MTS product or system, read and understand the

Safety manual and any other safety information provided with your system. Improper installation, operation, or maintenance of MTS equipment in your test facility can result in hazardous conditions that can cause severe personal injury or death and damage to your equipment and specimen. Again, read and understand the safety information provided with your system before you continue. It is very important that you remain aware of hazards that apply to your system.

Other MTS manuals In addition to this manual, you may receive additional MTS manuals in paper or

electronic form.

If you have purchased a test system, it may include an MTS System Documentation CD. This CD contains an electronic copy of the MTS manuals that pertain to your test system, including hydraulic and mechanical component manuals, assembly drawings and parts lists, and operation and preventive maintenance manuals. Controller and application software manuals are typically included on the software CD distribution disc(s).

Series 248 Actuator Product Information Preface

Conventions

DANGER

WARNING

CAUTION

Conventions

Documentation Conventions

The following paragraphs describe some of the conventions that are used in your MTS manuals.

Hazard conventions As necessary, hazard notices may be embedded in this manual. These notices

contain safety information that is specific to the task to be performed. Hazard notices immediately precede the step or procedure that may lead to an associated hazard. Read all hazard notices carefully and follow the directions that are given. Three different levels of hazard notices may appear in your manuals. Following are examples of all three levels.

Note For general safety information, see the safety information provided with

your system.

Danger notices indicate the presence of a hazard with a high level of risk which, if ignored, will result in death, severe personal injury, or substantial property damage.

Warning notices indicate the presence of a hazard with a medium level of risk which, if ignored, can result in death, severe personal injury, or substantial property damage.

Caution notices indicate the presence of a hazard with a low level of risk which, if ignored, could cause moderate or minor personal injury, equipment damage, or endanger test integrity.

Notes Notes provide additional information about operating your system or highlight

easily overlooked items. For example:

Note Resources that are put back on the hardware lists show up at the end of

the list.

Special terms The first occurrence of special terms is shown in italics.

Illustrations Illustrations appear in this manual to clarify text. It is important for you to be

Electronic manual

conventions

Preface

aware that these illustrations are examples only and do not necessarily represent your actual system configuration, test application, or software.

This manual is available as an electronic document in the Portable Document File (PDF) format. It can be viewed on any computer that has Adobe Acrobat Reader installed.

Series 248 Actuator Product Information

Documentation Conventions

Hypertext links The electronic document has many hypertext links displayed in a blue font. All

blue words in the body text, along with all contents entries and index page numbers, are hypertext links. When you click a hypertext link, the application jumps to the corresponding topic.

Series 248 Actuator Product Information Preface

Documentation Conventions

Preface

Series 248 Actuator Product Information

Introduction

Contents Series 248 Actuator Component Identification 15

This manual describes the MTS Series 248 Actuators and their components.

Series 248 Actuator Functional Description 16

Specifications and Dimensions 20

An integral part of the actuator is a linear variable differential transformer (LVDT), which measures the displacement of the actuator (extension or retraction) and sends the information to the system controller. The LVDT is mounted inside the actuator. It can be replaced with other specialized measuring devices.

The actuator can be mounted to a variety of fixtures and assemblies.

• Component test systems usually have one end of the actuator connected to a

custom test frame base and the other end connected to the test specimen. Either end of the actuator may use mounting fixtures (such as swivels) to attach it to the specimen or base.

Series 248 Actuator Product Information Introduction

• Material test systems usually have the actuator mounted in a load unit

assembly. The actuator can be mounted below the base plate or above the crosshead. The end of the actuator uses fixtures (such as grips) to attach the test specimen to it.

What you need to

know

MTS Systems Corporation assumes that you know how to use your controller. See the appropriate manual for information about performing any controllerrelated step in this manual’s procedure. You are expected to know how to perform the following procedures:

• Turn hydraulic pressure on and off.

• Select a control mode.

• Manually adjust the actuator position.

• Install a specimen.

• Define a simple test.

• Run a test.

Introduction

Series 248 Actuator Product Information

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