m be certain. Series 247 Actuators Product Information Model 247.11 Model 247.12 Model 247.21 Model 247.22 Model 247.23 Model 247.
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Contents Technical Support 5 How to Get Technical Support Before You Contact MTS 5 5 If You Contact MTS by Phone 7 Problem Submittal Form in MTS Manuals 8 Preface 9 Before You Begin Conventions 9 10 Documentation Conventions 10 Introduction 13 Component Identification Functional Description Specifications 15 17 19 Safety Information 23 Hazard Placard Placement 23 Installation 27 Installing Components on the Actuator Spiral Washers 28 30 Installing Fixtures with Spiral Washers Removing F
Contents Series 247 Actuators
How to Get Technical Support Technical Support How to Get Technical Support Start with your manuals The manuals supplied by MTS provide most of the information you need to use and maintain your equipment. If your equipment includes 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.
Before You Contact MTS Know information from prior technical assistance Identify the problem Know relevant computer information Know relevant software information 6 Technical Support If you have contacted MTS about this problem before, we can recall your file based on the: • MTS notification number • Name of the person who helped you Describe the problem and know the answers to the following questions: • How long and how often has the problem occurred? • Can you reproduce the problem? • Were
If You Contact MTS by Phone If You Contact MTS by Phone A Call Center agent registers your call before connecting you with a technical support specialist. The agent asks you for your: • Site number • Name • Company name • Company address • Phone number where you can be reached If your issue has a notification number, please provide that number. A new issue will be assigned a unique notification number.
Problem Submittal Form in MTS Manuals Problem Submittal Form in MTS Manuals Use the Problem Submittal Form to communicate problems with your software, hardware, manuals, or service that are not resolved to your satisfaction through the technical support process. The 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.
Before You Begin Preface Before You Begin Safety first! Other MTS manuals Before you 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 can result in hazardous conditions that can cause severe personal injury or death, or damage to your equipment and specimen. Again, read and understand the safety information provided with your system before you continue.
Conventions Conventions Documentation Conventions The following paragraphs describe some of the conventions that are used in your MTS manuals. Hazard conventions Hazard notices may be embedded in this manual. These notices contain safety information that is specific to the activity 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 all directions and recommendations.
Documentation Conventions Hypertext links Series 247 Actuators 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.
Documentation Conventions 12 Preface Series 247 Actuators
Introduction The Series 247 Hydraulic Actuators are double-acting, single-ended, heavy-duty actuators that operate under precision servovalve control in MTS closed-loop servohydraulic systems. Typical applications for the actuators include structural and static testing where a long stroke is required. Series 247 Hydraulic Actuators are routinely used in systems requiring precision force generation and accurate control of piston rod displacement.
Related products Actuator identification The Series 247 Actuators works in conjunction with other products. See the following product information manuals for product-specific information and maintenance procedures: • The Series 249 Swivels Product Information manual (MTS part number 011-775-600). • The Series 252 Servovalve Product Information manual (MTS part number 011-182-906). • The Series 256 Servovalve Product Information manual (MTS part number 011-209-602).
Component Identification Component Identification Extension Port LVDT Connector Front End Cap O-ring Piston Seal LVDT Coil Piston Bearing LVDT Core Extension Front End Cap O-ring Retraction Drainback Port Port (on back) High Pressure Seal/O-ring Actuator Rod Low Pressure Seal/Wiper Component Descriptions (part 1 of 2) Item Description Extension port/ Retraction port High-pressure hydraulic fluid is ported into the cylinder through the retraction port or the extension port.
Component Identification Component Descriptions (part 2 of 2) Item Description High-pressure seal The high-pressure seal is designed for long life and low friction. A small amount of fluid is allowed to flow past the high-pressure seal for continuous bearing lubrication. LVDT assembly The internally mounted LVDT measures the actuator piston rod displacement. The LVDT consists of a coil and a core extension. The coil is secured to the rear end cap.
Functional Description Functional Description A linear actuator is used to push or to pull on a specimen. A linear actuator consists of a cylinder that contains a piston and end caps which include the hydraulic ports to control the piston. The double-acting, single-ended actuator operates under precision servovalve control in MTS closed-loop servohydraulic systems. The actuator is a hydraulically powered piston that can extend or retract (double-acting).
Functional Description LVDT operation The internally mounted LVDT provides an indication of the actuator piston rod position in its displacement. The LVDT is an electromechanical device that provides an output voltage which is proportional to the displacement of a moveable core extension. The core extension is mounted inside the hollow piston rod and moves as the piston rod moves. The LVDT coil is secured to the pedestal base by a locking collar.
Specifications Specifications This section lists the specifications and dimensions for the Series 247 Actuator. Single-Ended Actuator Specifications Model Effective Piston Area Force Rating* Tension Compression Tension Rod Diameter Compression kN kip kN kip cm2 in2 cm2 in2 mm in 247.11 16.1 3.6 48 10.8 7.81 1.21 23.23 3.6 44.5 1.75 247.12 27.9 6.3 59.9 13.5 13.45 2.09 28.97 4.49 44.5 1.75 247.21 51.8 11.6 131 29.5 25.03 3.88 63.36 9.82 69.9 2.75 247.
Specifications Dimensions The letters in the following tables correspond to the letters in the “Series 247 Actuator Dimensions” on page 21. Actuator Cylinder Dimensions Model Displacement A B C mm in mm in mm in mm in 247.11 508 20 256.8 10.11 89.5 3.52 101.6 4 247.12 762 30 256.8 10.11 89.5 3.52 101.6 4 247.21 1016 40 266.7 10.47 120 4.72 127 5 247.22 1016 40 267.3 10.52 122.6 4.82 152.4 6 247.23 1016 40 268.6 10.57 123.8 4.87 165.1 6.5 247.
Specifications Series 247 Actuator Dimensions Actuator Dimensions Model D E SI Metric U.S. Customary mm in 247.11 M27x2 mm 1-14 UNS 50.8 2 247.12 M27x2 mm 1-14 UNS 50.8 2 247.21 M27x2 mm 1-14 UNS 50.8 2 247.22 M27x2 mm 1-14 UNS 50.8 2 247.23 M27x2 mm 1-14 UNS 50.8 2 247.31 M36x2 mm 2-12 UNS 63.5 2.5 The letters in the following tables correspond to the letters in the “Series 247 Actuator Dimensions” on page 21. Front End Cap Dimensions H Model * G 247.11 4 247.
Specifications 22 Introduction Series 247 Actuators
Hazard Placard Placement Safety Information Hazard Placard Placement Hazard placards contain specific safety information and are affixed directly to the system so they are plainly visible. Each placard describes a system-related hazard. When possible, international symbols (icons) are used to graphically indicate the type of hazard and the placard label indicates its severity.
Hazard Placard Placement Label Description CAUTION High drain pressure can cause rod seal damage and hydraulic oil leakage. Remove drain line shipping cap and connect drain hose before operating. Part # 045-283-501 Attached mass warning. Do not exceed maximum attached mass.
Hazard Placard Placement Label Description Hydraulic Actuator ID tag lists the following: Part # 037-588-801 • Model number • Serial number • Assembly number/Rev • Force rating • Effective Area • Static Stroke • Dynamic Stroke • Hydrostatic/Non-Hydrostatic Pressure icon. Can be used alone, or in conjunction with pressure rating label (Part # 57-238-5xx). Part # 57-237-711 Part # 57-238-5xx Series 247 Actuators Pressure rating.
Hazard Placard Placement 26 Safety Information Series 247 Actuators
Installation Installing the Series 247 Actuators depends on the testing application: • structural or vibration testing • materials or component testing For structural or vibration testing, the actuator is typically secured to a reaction mass using a swivel or pedestal base. This section describes how to install the actuator for this type of configuration. Although uncommon, the actuator can be configured for materials or component testing.
Installing Components on the Actuator Installing Components on the Actuator Several optional components can be mounted to the actuator piston rod or the rear end cap. The front end cap has four or eight threaded mounting holes. The rear end cap has four threaded mounting holes. See “Series 247 Actuator Dimensions” on page 21 for dimensions, mounting hole patterns, and thread sizes.
Installing Components on the Actuator Swivels Swivels and pedestals perform the same function. They anchor the actuator between a reaction mass and the test specimen or test fixture. The swivels allow the actuator to pivot and tilt (see the Series 249 Swivels product information manual, part number 011-775-600). And a pedestal anchors the actuator with no movement. These devices are designed to be attached to the base of the actuator or the actuator rod. And they can be used in combinations of each other.
Spiral Washers Spiral Washers The optional Model 601 Spiral Washers are typically used to provide fatigueresistant connections between elements of the force train and to minimize the effects of backlash. If the operating procedure requires changing of preloaded force train elements such as the load cell or grips, the spiral washers must be readjusted.
Spiral Washers Installing Fixtures with Spiral Washers The procedure requires two spanner wrenches and assumes you are familiar with all operating aspects of your system. Note Sometimes you might have multiple fixtures in the force train that have different force ratings. When installing the fixtures pretensioned with spiral washers, install the fixtures with the lowest force rating first. Then install any other fixtures from the lowest to the highest force rating. 1.
Spiral Washers 5. Slowly turn the connector stud into an element of the force train (for example, the actuator rod). The connector stud should turn freely. If any resistance is encountered, disassemble and correct the problem before proceeding. Connector Stud Medium Thickness Spiral Washer Rotation to Increase Thickness Connector Stud Do not exceed 6. Place the spiral washers together with the spiral surfaces facing each other. 7.
Spiral Washers Do not exceed the maximum HPS output pressure or apply a force greater than the capacity of any component in the force train. Exceeding the tensile load capacity of any element in the force train can cause equipment damage and/or personal injury. It is necessary to temporarily exceed the tensile load capacity to achieve the requirements of Step 12 in this procedure. This is accomplished by increasing the output pressure of the HPS. Contact MTS Systems Corporation. 11.
Spiral Washers Removing Fixtures with Spiral Washers The procedure requires two spanner wrenches and assumes you are familiar with all operating aspects of your system. Note Sometimes you might have multiple fixtures in the force train that have different force ratings. When removing the fixtures pretensioned with spiral washers, remove the fixtures with the lowest force rating first. Then remove any other fixtures from the lowest to the highest force rating. 1.
Connecting the LVDT Cable Connecting the LVDT Cable See your controller manual for cable specifications, cable assembly numbers, and where the LVDT is connected. The following figure shows the electrical connections of the LVDT.
Connecting Hydraulics Connecting Hydraulics Hydraulic connections to the Series 247 Actuator are made through a manifold that connects the ports of each end cap. The manifold has hydraulic pressure and return ports stamped P and R, respectively. The drain port has a fixture installed and it is located on the front end cap of the actuator. These ports are connected to matching ports located on a hydraulic service manifold (HSM). Note The size and shape of the manifold can be different.
Maintenance The Series 247 Actuators is designed for extended periods of operation without extensive maintenance requirements. The following table lists the recommended interval for each of these procedures. Maintenance Intervals* What to Do Clean the actuator When to Do It Every 40 hours of continuous operation or weekly. How to do it Clean exposed areas of the actuator piston rod with a clean, dry, lint free rag.
Maintenance Series 247 Actuators
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