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Copyright information Trademark information © 2009 MTS Systems Corporation. All rights reserved. MTS, SWIFT, TestStar, TestWare, MTS Remote Parameter Control, and RPC are registered trademarks of MTS Systems Corporation within the United States. These trademarks may be protected in other countries. Microsoft, Windows, Windows for Workgroups, Windows 95, and Windows NT are registered trademarks of Microsoft Corporation. Apple and Macintosh are registered trademarks of Apple Computer, Inc.
Contents Technical Support 5 Preface 9 Conventions 10 Hardware Overview 13 Overview 14 Spinning Applications (Track or Road) 16 Non-Spinning Applications (Laboratory) Construction 18 Design Features Coordinate System Specifications Calibration 17 21 22 24 28 Installation 31 Hazard Icons 32 Road and Track Vehicles 33 Attaching SWIFT Components to the Vehicle 38 Attaching SWIFT and Wheel Assembly to the Vehicle Collecting Data Road Simulator 41 48 51 Attaching SWIFT Components to the Fi
Maintenance 71 Transducer Cables 72 73 Troubleshooting 75 Assembly Drawings 79 Cable Drawings 80 SWIFT 45 GLP Mechanical Drawings 4 Contents 85 SWIFT® 45 GLP Sensors
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. Technical support methods www.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 any hardware or softwar
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 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.
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.
Conventions Hypertext links SWIFT® 45 GLP Sensors 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.
Conventions 12 Preface SWIFT® 45 GLP Sensors
Hardware Overview Contents Overview 14 Spinning Applications (Track or Road) Non-Spinning Applications (Laboratory) Construction Coordinate System Specifications SWIFT® 45 GLP Sensors 17 18 Design Features Calibration 16 21 22 24 28 Hardware Overview 13
Overview Overview The MTS Spinning Wheel Integrated Force Transducer (SWIFT) sensor is a light-weight, easy-to-use transducer that enables you to conduct faster, less expensive data acquisition and road simulation testing. The transducer is designed for use on the test track and public roads as well as in the test laboratory. It attaches to the test vehicle or an MTS Series 329 Road Simulator using an adapter and a modified wheel rim.
Overview CAUTION Do not disassemble the SWIFT sensor, Transducer Interface (TI) electronics, and accessory components. The SWIFT sensor, TI electronics, and accessory components are not intended to be disassembled, other than as outlined in “Troubleshooting”. Disassembling or tampering with these components may result in damage to the sensor, loss of watertight seal, and voiding of the warranty. • The sensor assembly should be returned to MTS annually for recalibration and inspection.
Spinning Applications (Track or Road) Spinning Applications (Track or Road) The SWIFT sensor can be used for road load data acquisition (RLDA) applications: • Durability • Noise, Vibration and Harshness (NVH) • Ride and Handling • Tire Performance The transducer is durable enough to withstand harsh road testing and data acquisition environments.
Non-Spinning Applications (Laboratory) Non-Spinning Applications (Laboratory) The SWIFT sensor can be fully integrated into the simulation process, since it is an optimal feedback transducer for use with MTS Remote Parameter Control (RPC) software. The transducer takes data at points where fixturing inputs are located rather than at traditional instrumentation points along the vehicle’s suspension.
Construction Construction The SWIFT sensor has one-piece construction for outstanding fatigue life, low hysteresis, and high stiffness. Its compact package has a minimal effect on inertia calculations, and a minimal dynamic effect on the test vehicle. The transducer can be used for developing conventional durability tests on the MTS Model 329 Road Simulator.
Construction Spindle adapter spacer The spindle adapter spacer attaches to the inner diameter of the transducer, allowing you to place it at the original position of the spindle face of the vehicle. The spindle adapter spacer enables you to maintain the original position of the tire on the vehicle (the tire will not protrude from the vehicle) while the transducer is attached to the vehicle. In addition, the spindle adapter spacer helps minimize brake heat from being transferred to the transducer.
Construction The anti-rotate device is mainly used for road data collection. Although it can also be used for short periods of time on a road simulator. MTS does not recommend this use. Due to the extreme fatigue loading characteristics of durability testing on road simulators, we suggest that you either remove the slip ring assembly before installing the vehicle on a road simulator, or use it only for iteration passes, then promptly remove it.
Construction Design Features Flexure isolation The SWIFT sensor has a very stiff outer ring and flexured beam isolation which render it relatively insensitive to stiffness variations in matings with rims and road simulator fixtures. Flexure isolation minimizes thermal expansion stresses. With flexure isolation, if the inner hub experiences thermal expansion the beams are allowed to expand out, resulting in lower compressive stress on the beams.
Coordinate System Coordinate System In the transducer, independent strain gage bridges measure forces and moments about three orthogonal axes. The signals are amplified to reduce the signal-tonoise ratio. An encoder signal indicates angular position, which is used to convert raw force and moment data from the rotating transducer to a vehiclebased coordinate system. The force and moment and encoder information is sent to the transducer interface (TI).
Coordinate System The SWIFT coordinate system is transducer-based, with the origin located at the center of the transducer. Positive loads are defined as applied to the outer ring of the transducer.
Specifications Specifications MEASURED VALUE UNITS TITANIUM SWIFT 45T (MT) Max Calibrated Load Ratings Fx lb (kN) 26,977 120 Fy lb (kN) 10,791 48 Fz lb (kN) 26,977 120 Mx in-lb (kN-m) 247,820 28 My in-lb (kN-m) 265,522 30 Mz in-lb (kN-m) 247,820 28 Noise Level peak to peak (0-500Hz) N 8 Maximum usable RPM RPM 2200 Maximum Speed (15 in.
Specifications Accuracy % FS 1 % FS 1 % FS 0.5 % FS 0.5 Force → Force % FS 1 Force → Moment % FS 1 Moment → Force % FS 1.5 Moment → Moment % FS 0.5 Transducer lb (kg) 23.6 10.7 Washer Plates lb (kg) 9.0 4.1 Slip Ring Assembly lb (kg) 2.0 0.9 HD Steel 19.5x6.75 Modified Rim lb (kg) 92.2 41.8 Modified Lug Nuts (qty. 10) lb (kg) 3.0 1.4 Attached Fastener lb (kg) 6.8 3.1 Total Weight lb (kg) 136.6 62.0 lb (kg) 61.0 27.7 lb (kg) 75.0 34.
Specifications Minimum Rim Size inch 17.5 Typical Lug Nut Bolt Circle Accommodated mm 165 to 225; 8x275 (8x275 pattern accepts 20mm Studs) Output Connector Type BNC Auto Shunt Calibration Internal Shunts Notes: • Based on loads at center of transducer. • Each SWIFT 45 sensor will be calibrated on an MTS calibration machine. MTS provides complete documentation of calibration values for each serial number SWIFT unit.
Specifications Transducer Center-of-Gravity North American Transducer Center-of-Gravity and Inertia Specifications TITANIUM SWIFT® 45 GLP Sensors Xcg 0.0 mm 0.0 in. Ycg 26.7 mm 1.05 in. Zcg 0.0 mm 0.0 in.
Calibration Calibration Each transducer is calibrated by MTS before shipment. The transducer and TI may be returned to MTS for repair and recalibration as required. Calibration is performed at MTS on a special fixture that is capable of applying multiple loads to the transducer. During calibration, raw signals are measured. The calibration gains and cross talk compensation values are computed from this raw data. These gains are recorded in a calibration file.
Calibration When you press the Shunt button, the associated Shunt LED lights. As the TI automatically switches through the series of bridges, it verifies that the outputs are within the accepted tolerance range. If all bridge shunt values fall within the tolerance range, the Shunt LED on the front panel will go off (after several seconds). If any bridge fails to fall within the shunt tolerance range, the LED will blink and error light turns on, indicating that the shunt calibration has failed.
Calibration 30 Hardware Overview SWIFT® 45 GLP Sensors
Installation The SWIFT sensor can be installed on a vehicle at the test track or on an MTS Series 329 Road Simulator in the test laboratory.
Hazard Icons Hazard Icons The following hazard icon is part of the label affixed to the side of the SWIFT 45 GLP Sensor.
Road and Track Vehicles Road and Track Vehicles Equipment required This procedure requires two people. To install the SWIFT 45 GLP sensor, you will need the following equipment: • Hub adapter • Modified rim (see next figure) • Anti-rotate assembly (including customer-supplied mounting arm) • Small set of metric hex-head wrenches • Tube bender for the restraint tube • Tube cutter • Metric socket head drive set (up to 17 mm) with extension • Molykote g-n paste, 2.8 oz.
Road and Track Vehicles – 203–815 N·m (150-600 lbf·ft); – 108–325 N·m (80–240 lbf ·ft) – 93 N·m (69 lbf·ft) • Cables (transducer and BNC, plus customer-supplied from transducer interface to data recorder) • Tie wraps • Data recorder • Power supply–10 to 28 V DC Installation Components (Test Track–Front) 34 Installation SWIFT® 45 GLP Sensors
Road and Track Vehicles Installation Components (Test Track–Duals) Importance of bolts Bolts provide exceptional clamp force at the transducer to rim/spindle interface. • Bolts on the inner hub secure the hub adapter to the SWIFT sensor. • Bolts on the outer ring secure the SWIFT sensor to the wheel rim (or road simulator spindle adapter). Note Before you begin Make sure all bolts are in place and fully torqued during all tests.
Road and Track Vehicles CAUTION Do not use high-pressure air to clean debris from around the transducer connectors. High-pressure air can damage the silastic seals and may void the warranty. Use a brush with fine, non-metal bristles and low air-pressure [0.07 MPa (10 psi)] to clean debris from around the transducer connectors. CAUTION Do not lay the wheel down on top of the transducer without proper padding.
Road and Track Vehicles CAUTION Do not allow the mounting arm or anti-rotate arm to bump against any portion of the wheel or wheel well. Any jarring of the mounting arm or anti-rotate arm will damage the slip ring and/or the encoder. Position the mounting arm and anti-rotate assembly so that full suspension travel will not cause interference with the wheel well or any other part of the vehicle.
Road and Track Vehicles Attaching SWIFT Components to the Vehicle SWIFT 45 GLP Fasteners M20 X 1.5 mm* M12 X 1.75 mm† M12 X 1.75 mm‡ MTS modified lug nuts and shim washers * The length of these fasteners is dependant on the thickness of the rim flange. The fastener length should ensure a minimum thread engagement of 30 mm (1.18 in). † The length of these fasteners is dependant on the thickness of the rim flange. The fastener length should ensure a minimum thread engagement of 18 mm (0.71 in).
Road and Track Vehicles 5. Attach the transducer to the modified wheel rim using the fasteners provided (see the previous table). Hand tighten the bolts. If environmental conditions warrant, coat each fastener with Birchwood Casey Sheath RB1 rust preventative (or equivalent). Lubricate the threads and under the head of each fastener with Molykote g-n paste.
Road and Track Vehicles C. Repeat Step 6A for the final torque. 7. Tighten the M20 mounting bolts. A. Following the sequence shown in the previous figure, torque the eight M20 bolts (1 through 8) to the value for the first increment shown in the following table. B. Repeat Step 7A for the second increment. C. Repeat Step 7A for the final torque. 8. Refer to Step 4. Finish tightening the 32 hub adapter bolts. A.
Road and Track Vehicles Attaching SWIFT and Wheel Assembly to the Vehicle 1. Before installing the SWIFT and wheel assembly, attach the anti-rotate bracket (customer supplied) to the vehicle. Because the bracket is unique to each vehicle the anti-rotate bracket must be provided by the customer. The following are guidelines for manufacturing and locating the bracket. See the next two figures.
Road and Track Vehicles If the anti-rotate bracket is fender or trailer-mounted, it must be in a vertical orientation so that when suspension travel occurs, the anti-rotate are does not rotate and cause errors in the data or bend the rod. The anti-rotate arm must be long enough to accommodate vehicle suspension travel. Ensure bracket will not hit body parts during vehicle testing or suspension travel.
Road and Track Vehicles 3. If necessary, assemble the hinge base with anti-rotate tube onto the slip ring. See the next figure. Note Typically this step is only required for new slip rings. After the assembly is complete, there should be no need to disassemble it except if a component becomes damaged. A. Connect the cable to the slip ring. B. Wrap the slip-ring connector and cable connector with butyl rubber shrink tape (MTS part number 100-175-781 or equivalent).
Road and Track Vehicles G. Tighten the screws that attach the hinge joint to the slip ring assembly. 4. Attach the transducer output cable to the slip ring encoder connector and the Slip Ring D-connector on the rear of the TI. 5. Secure the cable along its length so that ot will not become damaged during data collection. (For example, tape it to the external mirror.) Be sure to leave enough slack in the cable to allow for the full range of suspension travel.
Road and Track Vehicles 6. For front rim configurations (see the next figure): Attach the slip-ring bracket with the slip ring, conduit bracket, and restraint tube to the transducer. A. Note B. The slip-ring bracket fits over the circular connectors on the front of the transducer at the four locations. The slip-ring bracket is similarly labeled to prevent connecting it the wrong way. Use care when installing the slip-ring bracket. The circular connectors are keyed.
Road and Track Vehicles Note D. Use care when installing the top plate and extensions. The 9-pin connectors are keyed. The top plate and extensions should be fitted on straight (without bending or angling it) to make sure they engage the four connectors simultaneously and evenly. Secure the top plate to the standoffs using the four M12 bolts and washers. Lubricate the threads with Molykote g-n paste and torque to 93 N·m (69 lbf·ft). E.
Road and Track Vehicles Note F. Use care when installing the slip-ring bracket. The circular connectors are keyed. The slip-ring bracket should be fitted on straight (without bending or angling it) to make sure it engages both connectors simultaneously and evenly. Lubricate the threads and under the bolt heads of the eight M5 X 0.8 mm bolts with Molykote g-n paste. Insert them through the mounting holes in the slip-ring bracket and thread them into the transducer. Torque them to 6.8 N·m (5 lbf·ft). 8.
Road and Track Vehicles Collecting Data After you zero the TI, you are ready to collect data. Note If you turn off power to the TI boxes, the zero values will remain valid, but the encoder will need to find the index pulse to properly convert the rotating coordinates to stationary coordinates. The transducer outputs will not be correct until this happens. To reset the encoder, roll the vehicle either forward or backward so that the tire completes at least one revolution.
Road and Track Vehicles CAUTION The SWIFT assembly will protrude approximately 130 mm (5 in) from the side of the vehicle. Bumping the SWIFT assembly into hard surfaces such as garage doors, ramps and railings, or objects such as rocks, stumps, and earth, can damage the anti-rotate device, cable, slip ring, slip ring bracket (spider), and transducer. Do not allow the SWIFT assembly to bump into any hard surfaces or objects while you are driving the vehicle.
Road and Track Vehicles WARNING The SWIFT sensor can be exposed to load cycles that exceed the full scale calibrated ranges listed in, “Specifications,” on page 24. Excessive loading or load cycles could cause a fracture of the transducer, wheel rim, hub adapter, or fasteners and can result in serious injury, death or property damage. Do not use the SWIFT sensor if it has been exposed to load cycles that exceed the full scale calibrated ranges listed in, “Specifications,” on page 24.
Road Simulator Road Simulator Before you begin Angular correction is required on the test track only. If you are using the same transducer(s) for non-spinning simulation testing you must load the correct software into the TI. The SWIFT sensor must be attached to the test fixture before the vehicle is mounted. Clean all surfaces. It is critical that all surfaces be free of stones, burrs, and grease. CAUTION Do not pressure-wash the transducer or clean it with solvents.
Road Simulator Equipment required This procedure requires one person. To install the transducer, you will need the following equipment: • Hub adapter • Adapter to 329 simulator • Anti-rotate assembly (including customer-supplied mounting arm) • Small set of metric hex-head wrenches • Tube bender for the restraint tube • Tube cutter • Metric socket head drive set (up to 14 mm) with extension • Molykote g-n paste, 2.8 oz.
Road Simulator SWIFT® 45 GLP Sensors • Cables (transducer and BNC, plus customer-supplied from transducer interface to data recorder) • Tie wraps • Data recorder • Power supply–10 to 28 V DC Installation 53
Road Simulator Attaching SWIFT Components to the Fixturing Note SWIFT 45 GLP Fasteners Install the transducer in so that the orientation labeling is consistent with the reference orientation. In most cases, this means installing it so the labels are upright.
Road Simulator 3. Tighten the 32 hub adapter bolts. A. Following the sequence shown in the following figure, torque the 32 M12 bolts (1 through 32) to the value for the first increment shown in the following table. B. Repeat Step 3A for the second increment. C. Repeat Step 3A for the final torque. 4. Tighten the M12 mounting bolts. A. Following the sequence shown in the following figure, torque the eight M12 bolts (A through H) to the value for the first increment shown in the following table. B.
Road Simulator CAUTION Installing the lug bolts directly against the transducer face, without the antigalling compound and the shim washers, can cause galling of the transducer face. Galling of the transducer face can result in uneven torquing (and possible over-torquing) of the lug bolts. To prevent galling, always use the shim washers provided. Always lubricate the bolts and shim washers as described below.
Road Simulator 8. Attach the connector housing (or the slip ring bracket and slip ring) to each transducer. 9. Attach the appropriate cables from the connector housing or one cable from the slip ring to the TI or data acquisition. A. Secure the cables to the lateral strut of the road simulator so that it will not become damaged during testing. Be sure to leave enough slack for the full range of movement of the simulation fixture. 10. Connect the power supply to the TI.
Road Simulator 58 Installation SWIFT® 45 GLP Sensors
Analyzing SWIFT Data Overview This chapter contains examples of data collected from SWIFT installations, and explains how the data can be analyzed.
The Data The Data The following figure shows handling data taken on a flat, winding surface, using a SWIFT sensor and SOMAT software. The driving speed was between 30 and 100 kph (18–62 mph).
Fx Data (Longitudinal Force) Fx Data (Longitudinal Force) Mz+ Mz+ Direction of Motion Direction of Motion e tanc Dis Fx+ e tanc Dis S50-016 Fx+ S50-015 This figure shows the Fx (longitudinal force) data. • The offset in Fx after zeroing the SWIFT sensor is due to frictional force and rolling resistance on a flat road. • There is a strong similarity between Fx and Mz, due to the SWIFT sensor measurement characteristics. That is, the SWIFT sensor measures at the transducer centerline.
Fx Data (Longitudinal Force) The following figure illustrates the relationship between Fx and Mz, for this test case, which had a 170 mm (6.
Fz Data (Vertical Force) Fz Data (Vertical Force) The offset force in the Z direction is the combined weight of the car, equipment, and driver at that corner. 5.2 kN = 530 kg (force) = 1169 lb for this vehicle at static loading.
Mx Data (Overturning Moment) Mx Data (Overturning Moment) Mx D eY tanc eY nc ista Dis S50-018 Distance Z Distance Z Fz Fz S50-017 The moment Mx is the resultant of the forces Fz and Fy, and their respective distances to the center of the SWIFT sensor. After zeroing the SWIFT sensor, with the wheel off the ground, there will always be a small moment Mx present. This is due to the offset of the tire assembly center of gravity from the SWIFT sensor centerline.
Mx Data (Overturning Moment) Channel 4 Mx Data The following figure shows the relationship between Mx, Fz, and Fy, during a cornering event. Fz decreases as the vertical force is shifted to the opposite wheel. Fy, the lateral force, increases to prevent side slip resulting in an increase in the overturning moment, Mx. Mx = Fy x Distance Z +1 Fz x Distance Y Fy Fz Mx After zeroing the SWIFT sensor with the wheel off the ground, a moment Mx will still be present, as the following figure shows. 1.
Mx Data (Overturning Moment) Mx (wheel off ground) = Fz (active weight of the tire and rim outside the transducer) x Distance (CG to SWIFT sensor centerline) Mx offset with the wheel off the ground CG x Fz 66 Analyzing SWIFT Data SWIFT® 45 GLP Sensors
My Data (Brake Moment) My Data (Brake Moment) nce Y Dista Y nce ista D My My My Fx S50-020 Distance Z Distance Z My Fx S50-019 The moment My should show strong similarities with the force Fx and is calculated by the SWIFT sensor using the distance Z.
Acceleration and Braking Events Example Acceleration and Braking Events Example Shown below is actual road data taken with the MTS SWIFT Sensor, located at the front passenger side of a mid-size passenger vehicle. Data shown is postprocessed to translate the forces and moments from the center of the transducer to the center of the tire.
Acceleration and Braking Events Example Mz: The Mz output noted is corrected to give the aligning moment at the center of the tire. Minimal Mz moments are generated during these straight line acceleration and braking events. Time 6 to 10 seconds: During the relatively steady state acceleration of the vehicle, note the forces recorded. Fz: Approximately 100 lb of the weight of the vehicle can be seen transferring from each front wheel to the rear of the vehicle during steady state acceleration.
Slalom Curve Driving Example Slalom Curve Driving Example Shown below is actual road data taken with the MTS SWIFT Sensor, located at the front passenger side of a mid-size passenger vehicle. Data shown is corrected to translate the forces and moments from the center of the transducer to the center of the tire.
Maintenance Overview This chapter contains scheduling guidelines and detailed instructions for performing preventive maintenance. Preventive maintenance is a set of routine procedures that allow you to extend the operating life of your transducer and the transducer interface electronics. You can prevent excessive wear or possible component failure through regular inspections and simple procedures. The information provided in this chapter is a recommendation only.
Transducer The transducer requires a minimum amount of maintenance. CAUTION Do not pressure-wash the transducer or clean it with solvents. Pressure-washing the transducer or cleaning it with solvents can damage it or degrade the silastic seal and may void the warranty. Using strong cleaners or solvents can damage the RTV seal and may void the warranty. Use only a soft sponge or brush with non-metal bristles and a gentle detergent (such as dish soap) to wash the transducer.
Cables Monthly Inspect all electrical cables monthly, or after every 160 hours of operation. Always turn off the electrical power before you disconnect, repair, or replace a cable. 1. Check the condition of the cables for cuts, exposed wires, or other types of damage, loose connectors, and cracked or worn cable covers. Tighten any loose connectors. Replace any cracked or worn cables. 2. Ensure that cable connectors are securely plugged into their respective receptacles. 3.
Maintenance SWIFT® 45 GLP Sensors
Troubleshooting This chapter covers basic set-up related troubleshooting tips. Please read this section to investigate problems that you observe. In many cases, these problems will be setup related and can be corrected as described in this section. Important In the event that these troubleshooting tips indicate that there is a component failure, or the correction tips do not correct the problem, contact MTS.
Troubleshooting Guide (part 1 of 3) SYMPTOM POSSIBLE CAUSES SOLUTION Spinning Application: Vehicle Coordinate System Outputs have unusual or incorrect waveform shapes to them. A one-time-per-revolution of tire signal appears while the vehicle is driving straight on a flat surface. Mean level of the FZ output is roughly equal to the weight of the vehicle on that corner.
Troubleshooting Guide (part 2 of 3) SYMPTOM POSSIBLE CAUSES SOLUTION Spinning Application: Vehicle Coordinate System Outputs have unusual or incorrect waveform shapes to them. (Continued) A one-time-per-revolution of tire signal appears while the vehicle is driving straight on a flat surface. Mean level of the FZ output is roughly equal to the weight of the vehicle on that corner.
Troubleshooting Guide (part 3 of 3) SYMPTOM POSSIBLE CAUSES SOLUTION Spinning Application: Vehicle Coordinate System Outputs have unusual or incorrect waveform shapes to them. (Continued) A four-time-per-revolution of tire signal is showing up when the vehicle is driving straight on a flat surface. Wheel force transducers often have a modulation error with a cyclic frequency equal to the number of beams on the transducer.
Assembly Drawings This chapter contains the assembly drawings and parts lists relevant to the SWIFT 45 GLP transducers.
Cable Drawings Cable Drawings Cable Drawings PART NUMBER CABLE DESCRIPTION 572029-XX Cable Assy - SWIFT Mini Transducer Interface 572129-XX Cable Assy - SWIFT Mini TI, Power w/PT 572143-XX Cable Assy - SWIFT Mini TI Power w/lug 100-179-353 Cable Assy - SWIFT mini TI, Monitor 80 Assembly Drawings SWIFT® 45 GLP Sensors
SWIFT 45 GLP Mechanical Drawings SWIFT 45 GLP Mechanical Drawings SWIFT 50 GLPS Mechanical Drawings PART NUMBER PART DESCRIPTION 700-004-835 REFERENCE DIMENSION ASSY-SWIFT 45 700-002-218 DISK RIM (FRT) CUSTOMER DIMENSIONAL DWG.
LETTER ENGR DRAWN ECN NO REVISIONS DESCRIPTION DATE BEAM 1 LOCATION WITH DIGITAL LEVEL CENTERED ON SLIP RING LEVEL PLATE, THE LEVEL SHOULD READ 0 WHEN BEAM 1 IS LOCATED AT VERTICAL ZERO USE SERIAL NUMBER AS REFERENCE TO LOCATE BEAM 1 LEVEL BRACKET (P/N 100-211-570) X XX XX XX SOURCE/REF DRAWING - PROPRIETARY DATA THE INFORMATION AND DESIGN(S) DISCLOSED HEREIN ARE CONFIDENTIAL AND THE PROPERTY OF MTS SYSTEMS CORPORATION AND MAY NOT BE USED, REPRODUCED OR DISCLOSED IN ANY FORM EXCEPT AS GRANTED IN
LETTER ENGR DRAWN ECN NO REVISIONS DESCRIPTION DATE SWIFT 45 TRANSDUCER 4 2 STANDOFF W/EXTERNAL & INTERNAL M12 X 1.75MM THREADED ENDS (4) TOP ADAPTER PLATE CONNECTOR EXTENSION LEG (4) 2 M5 X .8MM SOCKET HEAD CAPSCREWS (8) 3 SOURCE/REF DRAWING ASSEMBLY NOTES: 1 ATTACH STANDOFFS TO SWIFT 45 TRANSDUCER. APPLY MOLYKOTE GN PASTE TO M12 X 1.75MM THREADED STUD AND USING A 27MM SOCKET, TORQUE STANDOFF TO 69 FT-LB (93 N-M). 2 ATTACH CONNECTOR EXTENSION LEGS TO TOP PLATE.
2 LETTER ENGR DRAWN ECN NO REVISIONS DESCRIPTION DATE WIDE KEYWAY M5 X .8MM HOLE (8), FOR ATTACHMENT OF 6 SLIP RING ASSEMBLY WIDE KEYWAY WIDE KEYWAY 2 SOURCE/REF DRAWING 2 - PROPRIETARY DATA WIDE KEYWAY THE INFORMATION AND DESIGN(S) DISCLOSED HEREIN ARE CONFIDENTIAL AND THE PROPERTY OF MTS SYSTEMS CORPORATION AND MAY NOT BE USED, REPRODUCED OR DISCLOSED IN ANY FORM EXCEPT AS GRANTED IN WRITING BY MTS SYSTEMS CORPORATION.
m MTS Systems Corporation 14000 Technology Drive Eden Prairie, Minnesota 55344-2290 USA Toll Free Phone: 800-328-2255 (within the U.S. or Canada) Phone: 952-937-4000 (outside the U.S. or Canada) Fax: 952-937-4515 E-mail: info@mts.com Internet: www.mts.
