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Copyright information Trademark information © 20012 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. All other trademarks or service marks are property of their respective owners.
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 Hardware Overview 13 Overview 14 Spinning Applications (Track or Road) Non-spinning Applications (Laboratory) Construction 17 18 Design Features Coordinate System Specifications Calibration 16 21 22 24 26 Interfacing with RPC 27 Installation 29 Hazard Icons 3
Fx Data (Longitudinal Force) Fz Data (Vertical Force) 55 57 Mx Data (Overturning Moment) My Data (Brake Moment) 58 61 Acceleration and Braking Events Example Slalom Curve Driving Example 63 65 Maintenance 67 Transducer Cables 68 69 Troubleshooting 71 Assembly Drawings 83 Cable Drawings 84 SWIFT 50 GLP Mechanical Drawings 4 95 SWIFT 50 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.
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.
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 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. Model 505G2.60 - 505G2.
Documentation Conventions 12 Preface Model 505G2.60 - 505G2.
Hardware Overview Contents Overview 14 Spinning Applications (Track or Road) Non-spinning Applications (Laboratory) Construction Coordinate System Specifications 21 22 24 26 Interfacing with RPC SWIFT 50 GLP Sensors 17 18 Design Features Calibration 16 27 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.
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 SWIFT 50 GLP Transducer Performance (part 1 of 2) Parameter Specification Use SWIFT 50 GLP S (stainless steel) for high fatigue life, durability SWIFT 50 GLP T (titanium) for low weight, high sensitivity Maximum usable rpm 2,200 Maximum speed 200 kph (125 mph) Fits rim size (usable range) 22.5–24.5 inch* Maximum hub bolt circle diameter accommodates M22 studs 335 mm (13.
Specifications SWIFT 50 GLP Transducer Performance (part 2 of 2) Parameter Specification Maximum operating temperature * † ‡ § # ** †† Low level amplifiers 70°C (158°F) Transducer interface 50°C (122°F) Contact MTS for other rim sizes.Larger diameter rims can be used, provided that overall clearance from brake calipers and suspension components is maintained. Load impedance >1 kΩ; 0.01 µF (maximum) load capacitance. Half axle rated capacity per SAE 267. Seen on the transducer for 100,000 cycles.
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.
Interfacing with RPC Interfacing with RPC The SWIFT sensor is directly compatible with the MTS Remote Parameter Control (RPC) simulation software. The SWIFT system produces outputs that directly correspond to the uncoupled spindle forces that the MTS Model 329 Road Simulator applies to the vehicle. Traditional instrumentation techniques provide coupled suspension loads data. Using the SWIFT sensor, the RPC simulation software needs to apply less correction to obtain the road simulator drive signals.
Interfacing with RPC 28 Hardware Overview SWIFT 50 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 50 GLP Sensor.
Road and Track Vehicles Road and Track Vehicles Equipment required This procedure requires two people.
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–12 V DC (optionally 24 V DC; for example, a truck battery) Modified Wheel Rim (front wheel) Spindle Adapter Spacer Slip Ring Bracket (with encoder) Rim-to-Transducer Assembly Fasteners Spacer-to-Transducer Fasteners Transducer Lug Nuts and Shim Washers (10)
Road and Track Vehicles 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 SWIFT 50 GLP Sensors Make sure all bolts are in place and fully torqued during all tests. Correct use of bolts reduces the safety hazard and ensures optimal transducer performance.
Road and Track Vehicles Before you begin Observe the following safety conditions while you are attaching the SWIFT sensor and components to the vehicle. 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.
Road and Track Vehicles CAUTION Do not drop the slip-ring bracket. Dropping the slip-ring bracket can damage the slip ring or a connector. Always use care when you handle the slip-ring bracket. 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.
Road and Track Vehicles Attaching SWIFT Components to the Vehicle SWIFT 50 GLP Fasteners Front Rim Dual Rims M16 X 1.5 mm* M16 X 1.5 mm* M10 X 1.5 mm† M10 X 1.5 mm† M5 X 0.8 mm‡ M5 X 0.8 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 must ensure a minimum thread engagement of 37 mm (1.46 in) but must not exceed 43 mm (1.69 in).
Road and Track Vehicles 4. Attach the spindle adapter spacer to the rim side of the transducer (see the next figure) using the four M5 fasteners provided (see the previous table). Ensure the pilot surface of the spindle adapter spacer is facing the transducer. Lubricate the threads and under the head of each fastener with Molykote g-n paste and torque to 6.5 N•m (4.8 lbf-ft).
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 6. Tighten the M10 mounting bolts. A. Following the sequence shown in the previous figure, torque the eight M10 bolts (A through H) to the value for the first increment shown in the following table. B. Repeat Step 6A for the second increment. C. Repeat Step 6A for the final torque. 7. Tighten the M16 mounting 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 to the vehicle. Since 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 2. Attach the wheel/transducer to the test vehicle. 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 and Track Vehicles Important Do not exceed a torque of 815 N•m (600 lbf•ft). Transducer 9 1 Modified Lug Nuts (10) 7 6 3 4 5 8 2 10 S50-41 3. If necessary, assemble the cable conduit brackets and hinge base with antirotate 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.
Road and Track Vehicles C. Install the cable conduit bracket onto the slip ring and secure the left side with the four M5 X 0.8 mm fasteners. Lubricate the fasteners with Molykote g-n paste and torque to 6.5 N•m (56 lbf•in). 2 D. Align the hinge base to the holes on the right side of the conduit cable bracket and slip ring. Rotate the hinge coupling and tube 90° to access the top hole. Secure the hinge base with the four M5 X 0.8 mm fasteners.
Road and Track Vehicles Note Use care when installing the slip-ring bracket. The 9-pin connectors are keyed. The slip-ring bracket should be fitted on straight (without bending or angling it) to make sure it engages all four connectors simultaneously and evenly. B. Lubricate the threads and under the bolt heads of the four M8 X 1.25 mm bolts with Molykote g-n paste. Insert them through the mounting hole in the slip-ring bracket and thread them into the transducer. Torque each to 27 N•m (20 lbf•ft). C.
Road and Track Vehicles C. Place the top plate, with extensions attached, over the standoffs. Orient the top plate such that the Board A extension (see the labeling on the top plate) is aligned with the Board A connector on the transducer. Note Cable Cable Conduit Bracket Use care when installing the top plate and extensions. The 9-pin connectors are keyed.
Road and Track Vehicles E. Install the slip-ring bracket with the slip ring, conduit bracket, and restraint tube. Slide the restraint tube through the hole in the anti-rotate bracket (installed earlier) as far as necessary to align the slip-ring bracket to the connectors on the top plate. The slip-ring bracket fits over the 9-pin connectors on the top plate at the locations labeled Board A and Board B. The slip-ring bracket is similarly labeled to prevent connecting it the wrong way.
Road and Track Vehicles Note Use care when installing the slip-ring bracket. The 9-pin 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. F. Lubricate the threads and under the bolt heads of the four M8 X 1.25 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 27 N•m (20 lbf•ft). G.
Road and Track Vehicles Attaching SWIFT Components to the Fixturing Note 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 and Track Vehicles 3. Tighten the M10 mounting bolts. A. Following the sequence shown in the previous figure, torque the eight M10 bolts (A through H) 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 M16 mounting bolts. A.
Road and Track Vehicles 6. Repeat steps 1 through 5 for each corner. Connector Side 1 through 10 = M22 (modified lug nuts) M5 Threaded Holes (4) A through H = M10 bolts 1 through 16 = M16 bolts 329 Simulator and Hub Mount Side S50-47 Bolt Torque Sequence 7. Install the vehicle on the road simulator. Refer to the instructions in your road simulator operation manual. 8. Attach the connector housing (or the slip ring bracket and slip ring) to each transducer. 9.
Road and Track Vehicles C. Connect the cables from the Shunt A and Shunt B connectors on the connector housing or the slip-ring bracket to the Shunt A and Shunt B connectors on the TI box(es) D. 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 (12 V DC or optional 24 V DC) to the TI.
Road and Track Vehicles 52 Installation SWIFT 50 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.
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 60 Analyzing SWIFT Data SWIFT 50 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.
My Data (Brake Moment) The relationship between Fx and My is shown in the following time history plot: 62 Analyzing SWIFT Data SWIFT 50 GLP Sensors
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.
Slalom Curve Driving Example 66 Analyzing SWIFT Data SWIFT 50 GLP Sensors
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, such as filter cleaning. 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 50 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. Additional information can be found in the SWIFT® Mini Transducer Interface product manual, part number 100-214-316.
Troubleshooting Guide (part 1 of 11) Symptom Possible Causes Transducer Interface (TI) does not power up (green power indicator is not lit). FAIL indicator. Solution If any of the following conditions exist, the Power indicator next to the Power button will not turn on (green) when you press the button. The TI power supply cable is not connected. Check that the cable is securely connected to the TI box. At the back of the TI box, the J1 Power must be connected to a power supply or battery.
Troubleshooting Guide (part 2 of 11) Symptom SWIFT 50 GLP Sensors Possible Causes Solution The transducer signal cable is not connected. Check that the cable is connected between the TI box and the slip ring (or connector housing for a road simulator). Output cables are not connected. Check that the output connectors are securely fastened to the data acquisition device. Cables or connectors are damaged. Check all cables and connectors, particularly the power and transducer cable.
Troubleshooting Guide (part 3 of 11) Symptom Possible Causes Solution Zero Offset: One or more Signal Outputs appear to have an offset after the TI electronics have been zeroed. The transducer was zeroed with load applied (or a different load than the intended tare weight for non-spinning applications only). Rezero the TI, being careful not to touch or load the transducer during the zero procedure. Considerable temperature changes have occurred.
Troubleshooting Guide (part 4 of 11) Symptom Possible Causes Solution The AngleOffset value is incorrect in the calibration file. If an incorrect AngleOffset value is set in the TI calibration file, an axis which should have no load may show some load from another vehicle coordinate axis based on the incorrect reference orientation. Verify that the correct AngleOffset is set for your specific application (refer to the SWIFT® Mini Transducer Interface product manual, part number 100-214-316.).
Troubleshooting Guide (part 5 of 11) Symptom Possible Causes Solution Output levels are much higher or lower than expected Gains in the TI calibration file have been overwritten or modified. Use the TI2XFER program to upload the current TI calibration file (refer to the SWIFT® Mini Transducer Interface product manual, part number 100-214-316.). Check that the gain settings match the original calibration file sent with the transducer.
Troubleshooting Guide (part 6 of 11) Symptom Possible Causes Solution Failed indicator lights after Shunt Calibration The signal cable is not connected to the transducer or it is damaged or the transducer is damaged. Perform TI2STATUS. Check that the proper calibration file was downloaded (the serial number in the report matches the transducer serial number. Check the error messages in the report.
Troubleshooting Guide (part 7 of 11) Symptom Possible Causes Solution The shunt reference values were changed. Use the TI2XFER program to upload the current calibration file. Check the file to verify that the variables ShuntDeltaRef are the same as shown on the original calibration file provided by MTS. The eight ShuntDeltaMeas values should read approximately 0.85 V. The shunt tolerance is not set correctly. Use the TI2XFER program to upload the current calibration file.
Troubleshooting Guide (part 8 of 11) Symptom Possible Causes Solution Errors reported when TI2STATUS is run. Shunt errors that TI2STATUS could report. • Reference Bad – a downloaded shunt reference is zero. This is a calibration settings problem. • Shunted Bad – A bridge being shunted deviated from the shunt reference by more than the limit. This could be caused by a sensor failure, transducer cable failure, TI failure, bad shunt reference setting or bad shunt tolerance setting.
Troubleshooting Guide (part 9 of 11) Symptom Possible Causes Solution Shunt Calibration as Recorded by External Data Acquisition is incorrect or inconsistent. (The internal shunt check in the TI electronics verifies each of the eight individual bridges, but it is the six bridge 10 V output that you can record if desired.) The gains have been changed in the calibration file. As the bridges are shunted, the eight raw bridge outputs pass through the TI box and have the calibration gains applied to them.
Troubleshooting Guide (part 10 of 11) Symptom Possible Causes Solution 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. Temperature Effects: The SWIFT transducer is temperature compensated to reduce temperature induced errors, but any significant changes in temperature will induce zero shifts.
Troubleshooting Guide (part 11 of 11) 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 50 GLP transducers.
Cable Drawings Cable Drawings Cable Drawings Part Number Cable Description 377661XX CABLE ASSY-SIGNAL COMMON/PRODUCT GND 569975XX CABLE ASSY-SHUNT CAL, SWIFT XDCR 572129XX CABLE ASSY-SWIFT MINI TI, POWER W/PT 572143XX CABLE ASSY-SWIFT MINI TI, POWER W/LUG 574462XX CABLE ASSY-MODULE BOX, MDM, SWIFT 50GLP 100179353 CABLE ASSY-SWIFT MINI TI,MONITOR 100224052 CABLE ASSY-LPTI TO MINI TI, SWIFT, ROHS 84 Assembly Drawings SWIFT 50 GLP Sensors
LETTER ENGR DRAWN 7 DATE RLJ 5 4 RLJ B -05 & -06 TO REV B. UPDATE DOCUMENT REV. CHANGE ITEM 5 QTY FROM: 6, TO: 4. 500001048 6 4 ECN NO REVISIONS DESCRIPTION 6-12-12 6 4 3 2 APPLY RTV TO AREA (THIS SIDE & OPP.
12 1 LETTER DATE BOM CHANGES: CHG QTY ITEM 9 464822-01 (6 TO 4) ITEM 10, 100-227-471 WAS 100-158-692 CHG QTY ITEM 11, 100-176-523 (2 FT - 1 FT) ITEM 14, 100-226-155 WAS 119511-32 ADD ITEM 17, 100-203-552 (1) WRAP AROUND LABEL TO SWIFT TRANSDUCER CABLES 100-224-052 B 3 13 27 10-0576 ENGR DRAWN 14 1 ECN NO REVISIONS DESCRIPTION DRAWING CHANGES: UPDATE FRONT PANEL SILKSCREEN ADD NOTE 3, ADD VIEWS BACKSHELL ASSY AND SHIELD CONNECTION.
SWIFT 50 GLP Mechanical Drawings SWIFT 50 GLP Mechanical Drawings SWIFT 50 GLPS Mechanical Drawings Part Number Part Description 569844xx LUG NUT, MODIFICATION-SWIFT 50GLP 570594xx CONDUIT BRKT- SLIP RING ASSY-SWIFT 50GLP 100161435 ANTI-ROTATE ASSY- CUST/USER,SWIFT 50GLP 700002218 DISK RIM (FRT) CUSTOMER DIMENSIONAL DWG 700002219 DISK RIM (REAR) CUSTOMER DIMENSIONAL DWG 700002520 ANTI-ROTATE BRKT WELDMENT-SWIFT 50 REF 700003435 REFERECE DIMENSION ASSEMBLY-SWIFT 50GLP 700003439 SWIFT 50GLP
SWIFT 50 GLP Mechanical Drawings 110 Assembly Drawings SWIFT 50 GLP Sensors
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 http://www.mts.
