Instron 2712 Series Manuel

Series 2712 and 2732 Pneumatic Side Action Grips

Operator’s Guide M10-14179-EN Revision C

The difference is measurable

Electromagnetic Compatibility

Where applicable, this equipment is designed to comply with International Electromagnetic Com-

patibility (EMC) standards.

To ensure reproduction of this EMC performance, connect this equipment to a low impedance

ground connection. Typical suitable connections are a ground spike or the steel frame of a building.

Proprietary Rights Notice

This document and the information that it contains are the property of Illinois Tool Works Inc.

(ITW). Rights to duplicate or otherwise copy this document and rights to disclose the document and

the information that it contains to others and the right to use the information contained therein may

be acquired only by written permission signed by a duly authorized officer of ITW.

Trademarks

Instron®is a registered trademark of Illinois Tool Works Inc. (ITW). Other names, logos, icons and

marks identifying Instron products and services referenced herein are trademarks of ITW and may

not be used without the prior written permission of ITW.

Other product and company names listed are trademarks or trade names of their respective

companies.

Original Instructions

shown in this document are subject to change without notice.

Worldwide Headquarters

Instron

825 University Avenue

Norwood, MA 02062-2643

United States of America

European Headquarters

Instron

Coronation Road

High Wycombe, Bucks HP12 3SY

United Kingdom

Industrial Products Group

Instron

900 Liberty Street

Grove City, PA 16127

United States of America

iii

Preliminary Pages

General Safety Precautions

Materials testing systems are potentially hazardous.

Materials testing involves inherent hazards from high forces, rapid motions, and

stored energy. You must be aware of all moving and operating components that are

potentially hazardous, particularly the actuator in a servohydraulic testing system or

the moving crosshead in an electromechanical testing system.

Carefully read all relevant manuals and observe all Warnings and Cautions. The

term Warning is used where a hazard may lead to injury or death. The term Caution

is used where a hazard may lead to damage to equipment or to loss of data.

Instron products, to the best of its knowledge, comply with various national and

international safety standards, in as much as they apply to materials and structural

testing. We certify that our products comply with all relevant EU directives (CE

mark).

Because of the wide range of applications with which our instruments are used, and

over which we have no control, additional protection devices and operating

procedures may be necessary due to specific accident prevention regulations, safety

regulations, further EEA directives or locally valid regulations. The extent of our

delivery regarding protective devices is defined in your initial sales quotation. We

are thus free of liability in this respect.

At your request, we will gladly provide advice and quotations for additional safety

devices such as protective shielding, warning signs or methods of restricting access

to the equipment.

The following pages detail various general warnings that you must heed at all times

while using materials testing equipment. You will find more specific Warnings and

Cautions in the text whenever a potential hazard exists.

Your best safety precautions are to gain a thorough understanding of the equipment

by reading your instruction manuals and to always use good judgement.

It is our strong recommendation that you should carry out your own product safety

risk assessment.

Preliminary Pages M10-14179-EN

Warnings

Hazard - Press the Emergency Stop button whenever you consider that an

unsafe condition exists.

The Emergency Stop button removes hydraulic power or electrical drive from the

testing system and brings the hazardous elements of the system to a stop as quickly

as possible. It does not isolate the system from electrical power, other means are

provided to disconnect the electrical supply. Whenever you consider that safety may

be compromised, stop the test using the Emergency Stop button. Investigate and

resolve the situation that caused the use of the Emergency Stop button before you

reset it.

Flying Debris Hazard - Make sure that test specimens are installed correctly

in grips or fixtures in order to eliminate stresses that can cause breakage of

grip jaws or fixture components.

Incorrect installation of test specimens creates stresses in grip jaws or fixture

components that can result in breakage of these components. The high energies

involved can cause the broken parts to be projected forcefully some distance from

the test area. Install specimens in the center of the grip jaws in line with the load

path. Insert specimens into the jaws by at least the amount recommended in your

grip documentation. This amount can vary between 66% to 100% insertion depth;

refer to supplied instructions for your specific grips. Use any centering and

alignment devices provided.

Hazard - Protect electrical cables from damage and inadvertent

disconnection.

The loss of controlling and feedback signals that can result from a disconnected or

damaged cable causes an open loop condition that may drive the actuator or

crosshead rapidly to its extremes of motion. Protect all electrical cables, particularly

transducer cables, from damage. Never route cables across the floor without

protection, nor suspend cables overhead under excessive strain. Use padding to

avoid chafing where cables are routed around corners or through wall openings.

Preliminary Pages

High/Low Temperature Hazard - Wear protective clothing when handling

equipment at extremes of temperature.

Materials testing is often carried out at non-ambient temperatures using ovens,

furnaces or cryogenic chambers. Extreme temperature means an operating

temperature exceeding 60 °C (140 °F) or below 0 °C (32 °F). You must use

protective clothing, such as gloves, when handling equipment at these temperatures.

Display a warning notice concerning low or high temperature operation whenever

temperature control equipment is in use. You should note that the hazard from

extreme temperature can extend beyond the immediate area of the test.

Crush Hazard - Take care when installing or removing a specimen, assembly,

structure, or load string component.

Installation or removal of a specimen, assembly, structure, or load string component

involves working inside the hazard area between the grips or fixtures. When

working in this area, ensure that other personnel cannot operate any of the system

controls. Keep clear of the jaws of a grip or fixture at all times. Keep clear of the

hazard area between the grips or fixtures during actuator or crosshead movement.

Ensure that all actuator or crosshead movements necessary for installation or

removal are slow and, where possible, at a low force setting.

Hazard - Do not place a testing system off-line from computer control without

first ensuring that no actuator or crosshead movement will occur upon

transfer to manual control.

The actuator or crosshead will immediately respond to manual control settings

when the system is placed off-line from computer control. Before transferring to

manual control, make sure that the control settings are such that unexpected

actuator or crosshead movement cannot occur.

Robotic Motion Hazard - Keep clear of the operating envelope of a robotic

device unless the device is de-activated.

The robot in an automated testing system presents a hazard because its movements

are hard to predict. The robot can go instantly from a waiting state to high speed

operation in several axes of motion. During system operation, keep away from the

operating envelope of the robot. De-activate the robot before entering the envelope

for any purpose, such as reloading the specimen magazine.

Warnings

Preliminary Pages M10-14179-EN

Hazard - Set the appropriate limits before performing loop tuning or running

waveforms or tests.

Operational limits are included within your testing system to suspend motion or

shut off the system when upper and/or lower bounds of actuator or crosshead travel,

or force or strain, are reached during testing. Correct setting of operational limits

by the operator, prior to testing, will reduce the risk of damage to test article and

system and associated hazard to the operator.

Electrical Hazard - Disconnect the electrical power supply before removing

the covers to electrical equipment.

Disconnect equipment from the electrical power supply before removing any

electrical safety covers or replacing fuses. Do not reconnect the power source while

the covers are removed. Refit covers as soon as possible.

Rotating Machinery Hazard - Disconnect power supplies before removing the

covers to rotating machinery.

Disconnect equipment from all power supplies before removing any cover which

gives access to rotating machinery. Do not reconnect any power supply while the

covers are removed unless you are specifically instructed to do so in the manual. If

the equipment needs to be operated to perform maintenance tasks with the covers

removed, ensure that all loose clothing, long hair, etc. is tied back. Refit covers as

soon as possible.

Hazard - Shut down the hydraulic power supply and discharge hydraulic

pressure before disconnection of any hydraulic fluid coupling.

Do not disconnect any hydraulic coupling without first shutting down the hydraulic

power supply and discharging stored pressure to zero. Tie down or otherwise secure

all pressurized hoses to prevent movement during system operation and to prevent

the hose from whipping about in the event of a rupture.

Hazard - Shut off the supply of compressed gas and discharge residual gas

pressure before you disconnect any compressed gas coupling.

Do not release gas connections without first disconnecting the gas supply and

discharging any residual pressure to zero.

Warnings

vii

Preliminary Pages

Explosion Hazard - Wear eye protection and use protective shields or screens

whenever any possibility exists of a hazard from the failure of a specimen,

assembly or structure under test.

Wear eye protection and use protective shields or screens whenever a risk of injury

to operators and observers exists from the failure of a test specimen, assembly or

structure, particularly where explosive disintegration may occur. Due to the wide

range of specimen materials, assemblies or structures that may be tested, any hazard

resulting from the failure of a test specimen, assembly or structure is entirely the

responsibility of the owner and the user of the equipment.

Hazard - Ensure components of the load string are correctly pre-loaded to

minimize the risk of fatigue failure.

Dynamic systems, especially where load reversals through zero are occurring, are at

risk of fatigue cracks developing if components of the load string are not correctly

pre-loaded to one another. Apply the specified torque to all load string fasteners and

the correct setting to wedge washers or spiral washers. Visually inspect highly

stressed components such as grips and threaded adapters prior to every fatigue test

for signs of wear or fatigue damage.

Warnings

Preliminary Pages M10-14179-EN

viii

Preliminary Pages

Table of Contents

Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Closing the Grip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Opening the Grip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Foot Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Automatic Grip Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Chapter 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2712-001 and 2712-013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2712-002 and 2712-019 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2712-003, 2712-004 and 2712-018, 2712-020 . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2712-016. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2732-003, 2732-004, 2732-008 and 2732-009 . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2732-006. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Compatible Jaw faces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Preliminary Pages M10-14179-EN

Chapter 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Installing to a Load Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Clevis Pin Couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Swivel Coupling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Threaded Couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

High Temperature Extension Rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Installing and Removing Jaw Faces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Installing Jaw faces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Removing Jaw faces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Installing Jaw Face Shields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Connecting Pneumatics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Grip Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Manual Foot Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Automatic Grip Control Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Chapter 4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Preparing for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

General Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Extreme Temperature Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Opening and Closing the Grips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Toggle Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Foot Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Automatic Grip Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Installing a Specimen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Removing a Specimen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Chapter 5 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

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