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Interface T7 Operation Manual

Rotary torque transducers
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T2, T3, T4, T5, T6, T7, T12 & T15
Rotary Torque Transducers
Operation Manual
T2 Precision Rotary &
T3 Precision Rotary &
T6 Dual Range
T4 General Purpose Rotary
T5 General Purpose Rotary
Rotary Torque Transducer
Torque Transducers
Torque Transducers
T7 Dual Range
T12 Square Drive
T15 Hex Drive
Rotary Torque Transducer
Rotary Torque Transducer
Rotary Torque Transducer
7401 East Butherus Drive • Scottsdale, Arizona 85260 • 480.948.5555 • www.interfaceforce.com

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Summary of Contents for Interface T7

  • Page 1 T2, T3, T4, T5, T6, T7, T12 & T15 Rotary Torque Transducers Operation Manual T2 Precision Rotary & T3 Precision Rotary & T6 Dual Range T4 General Purpose Rotary T5 General Purpose Rotary Rotary Torque Transducer Torque Transducers Torque Transducers...
  • Page 2 Valid for... T2, T3, T4, T5, T6, T7, T12 & T15 Rotary Torque Copyright © 2009 Interface, Inc. Modification Technical changes reserved. References in this Text 1.6 Warning Notes; Page 5 Attention must be paid to the accident prevention regulations of the trade associations.

  • Page 3: Table Of Contents

    Definition of the Pictograms on the Torque Tranducer…….…………………………………………………………..Product Description…………………………………………….…………………………………………………………..Mechanical Setup…………………………………………………………………………………………………………..Principle of Operation………………………………………….…………………………………………………………..Electrical Setup……………………………………………………………………………………………………………..3.2.1 Transducers with Analog Output……………………………..…………………………………………………………..3.2.2 Transducers with RS485 Interface…………………………...…………………………………………………………..3.2.3 The Serial Communication………………………………………………………………………………………………..Electrical Connection…………………………………………..…………………………………………………………..Pin Connection……………………………………………………………………………………………………………..Calibration Control……………………………………………..…………………………………………………………..4.2.1 Calibration Control and Analog Output…………………………………………………………………………………..

  • Page 4: Read First

    Read First Safety and Caution Symbols Caution: Injury Risk for Persons Damage of the Device is possible. Note: Important points to be considered. Intended Use Torque transducers are intended for the measurement of torques. This measure is further suitable for control tasks. The valid safety regulations should be absolutely respected.

  • Page 5: Warning Notes

    Term Definitions Terms Measuring Side: Mechanical connection of the torque transducer in which the torque to be measured is applied. Usually this side has the smallest moment of inertia. Drive Side: Mechanical connection of the torque transducer on the opposite side of the measuring side, usually with the largest moment of inertia.

  • Page 6: Principle Of Operation

    Principle of Operation The supply voltage of between 12 and 28V DC is converted to AC in the stator and transferred inductively to the rotor electronics. The voltage is rectified and stabilized and fed to the strain gage bridge. The output of the bridge is conditioned in an amplifier and then converted to a digital signal, which is transferred to the stator by another rotating transformer.

  • Page 7: Electrical Setup

    Electrical Setup Dual Range Transducers Only Rotating Transformer Supply Oscillator DC / DC voltage 4 MHz Supply and Cycle and Control Signal Control Signal Filter for Calibration Control Signal µ - Processor Amplifier Control Amplifier R-Cal Resistor Rotating Transformer Signal Signal Adaption Signal Output...

  • Page 8: Transducers With Analog Output

    At this output, the digital signal is converted into DC voltage of ±5V or ±10V, proportional to the torque and is available at the connector output. 3.2.2 Transducers with RS485 Interface The torque transducer has a digital interface RS485 for the signal output and automatic transducer identification. The protocol enables high dynamics. For more information consult factory (800) 947-5598 or visit www.interfaceforce.com. 3.2.3 The Serial Communication Consult factory (800) 947-5598 or visit www.interfaceforce.com.

  • Page 9: Calibration Control And Analog Output

    The calibration control switch on is carried out by a command. For more information consult factory (800) 947-5598 or visit www.interfaceforce.com. Cable Use only shielded cable with the shortest length possible. We recommend Interface brand cables as they are tested together with our transducers. Shielding Connection In combination with the transducer and the external electronics, the shield forms a Faraday Cage.

  • Page 10: Mechanical Assembly

    Mechanical Assembly For the assembly of a torque transducer in a shaft line, we always recommend to use couplings, which can be misaligned. During the assembly, the transducer must be supported to protect if from falling down. Couplings We recommend multi-disc couplings for our torque transducers. Couplings must be able to balance an axial, radial or angular offset of the shafts and not allow large forces to act on the transducer.

  • Page 11: Torque Transducers Of 0.03 Nm To 15 Nm

    5.2.1 Torque Transducers of 0.03 Nm to 15 Nm Transducers with nominal torques below 20 Nm are very sensitive to overload, therefore these transducers need to be handled with greatest caution. Connect the transducer electrically during the assembly and observe the measuring signal; the limit values may not be exceeded in any case.

  • Page 12: Foot Version Assembly

    In this case, with both single-jointed couplings, the torque transducer forms a double-jointed coupling. A single-jointed coupling can only balance axial and angular misalignments. In this installation case, double-jointed couplings cannot be used for both sides! Risk of Breakage! Foot Version Assembly The housing of the transducer is designed as a bearing block.

  • Page 13: Typical Application

    Typical Application AC C U S chrauber Fixation Clip-on tool Caution: Do not use impulse or impact screwdrivers! Measuring Engaging The warming-up period of the torque transducer is approx. 5 min. Afterwards the measurement can be started. The warming-up period of the torque transducer is approx. 5 min. Direction of Torque Torque means clockwise or clockwise torque if the torque acts clockwise when facing the shaft end.

  • Page 14: Natural Resonances

    Control of cables and connectors 1x p.a. Calibration < 26 months Control of fixation (flanges, shafts) 1x p.a. Have bearings exchanged by Interface, Inc. 20,000 hrs operating time 7401 East Butherus Drive • Scottsdale, Arizona 85260 • 480.948.5555 • www.interfaceforce.com...

  • Page 15: Troubleshooting

    7.2 Troubleshooting This chart is used for searching for the most frequent errors and their elimination Problem Possible Cause Troubleshooting No signal No transducer excitation • Outside of permissible range • Connect excitation • Cable defect • No mains supply Signal output connected wrong •...

  • Page 16: Storage

    The calibration of the transducer is carried out according to the guidelines of the DKD. The surveillance of the calibrating- laboratory takes place by the DKD. At this calibration, the uncertainty of measurement of the torque-measuring instrument is determined. Further information can be obtained from Interface Inc. 11.3 Recalibration The recalibration of the torque transducer should be carried out after 26 months at the latest.

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