LORENZ MESSTECHNIK DR-2800 Operation Manual

LORENZ MESSTECHNIK DR-2800 Operation Manual

Torque sensor

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LORENZ MESSTECHNIK GmbH
Operation Manual
for Torque Sensor
Type DR-2800
E-Mail: info@lorenz-sensors.com
Internet:
www.lorenz-sensors.com
Technical changes under reserve
Obere Schloßstr.131
 07172 / 93730-0
73553 Alfdorf
Fax 07172 /93730-22
090329a.docx
Page 1 of 15

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Summary of Contents for LORENZ MESSTECHNIK DR-2800

  • Page 1 LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Operation Manual for Torque Sensor Type DR-2800 E-Mail: info@lorenz-sensors.com Technical changes under reserve 090329a.docx Internet: www.lorenz-sensors.com Page 1 of 15...
  • Page 2 Manufacturer, Place Lorenz Messtechnik GmbH, D-73553 Alfdorf. Valid for... Torque sensor type DR-2554 Copyright © 2012 Lorenz Messtechnik GmbH, Alfdorf. Interdiction of Reprint Reprint in whole or in part with written permission, only. Change Notice Technical changes are reserved. E-Mail: info@lorenz-sensors.com Technical changes under reserve 090329a.docx...
  • Page 3 LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 References in this Text 1.6 Warning Notes; Page 6 Attention must be paid to the accident prevention regulations of the trade associations. Coverings and casings are necessary before operating the sensor. This is also valid for commissioning, maintenance and trouble shooting.
  • Page 4: Table Of Contents

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Contents Read First .............................. 5 Safety and Caution Symbols ......................5 Intended Use ..........................5 Dangers ............................5 1.3.1 Neglecting of Safety Notes ..................... 5 1.3.2 Residual Dangers ........................
  • Page 5: Read First

    Important points to be considered. Intended Use Lorenz Messtechnik GmbH devices may only be used for measurement tasks and the directly related control tasks. Any other use is considered improper. The torque sensors are not safety components in the sense of the intended use. The sensors need to be transported and stored appropriately. The assembly, commissioning and disassembling must take place professionally.
  • Page 6: Warning Notes

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Warning Notes Attention must be paid to the accident prevention regulations of the trade associations. Coverings and casings are necessary before operating the sensor. This is also valid for commissioning, maintenance and trouble shooting.
  • Page 7: Mechanical Setup

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Mechanical Setup The sensor consists of a stationary part, the stator and a rotary part, the rotor. Stator Air Gap Rotating Transformer for free rotation of...
  • Page 8: Mechanical Assembly

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Mechanical Assembly Rotor Assembly Caution: During the assembly inadmissibly large forces may not act on the sensor or the couplings. Connect the sensor electrically during the assembly and observe the signal, the measurement signal may not exceed the limit values.
  • Page 9: Stator Assembly

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Stator Assembly Use keyway for the axial alignment Align stator to shaft Rotor may not touch the stator Note the axial position of rotor to stator Tolerance: ±...
  • Page 10: Using Center Bore

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 4.3.2 Using Center Bore Each part, led through the sensor, means a torque shunt.  By this, a torque portion will bypass the sensor.  This portion is not measured → so the shunt must be small in relation to the measured torque.
  • Page 11: Alignment Of The Measurement Arrangement

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 If shear forces and axial forces act on the torque sensors, they can cause zero point shifts, which falsify the measuring signal as a disturbance variable during the measurement.
  • Page 12: Speed Sensor (Option)

    Torque means clockwise torque if the torque acts clockwise when facing the shaft end. In this case a positive electrical signal is obtained at the output. Torque sensors by Lorenz Messtechnik GmbH can measure both, in clockwise and counter-clockwise direction.
  • Page 13: Bending Natural Resonances

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 6.4.3 Bending Natural Resonances Together with the shaft and the couplings, the sensor forms a bending vibration. Sensor with coupling Mounting This applies for bending natural...
  • Page 14: Trouble Shooting

    LORENZ MESSTECHNIK GmbH Obere Schloßstr.131  07172 / 93730-0 73553 Alfdorf Fax 07172 /93730-22 Trouble Shooting This table is used to find the most common errors and debugging. Problem Possible Cause Debugging  Outside of permissible range No signal No sensor excitation ...
  • Page 15: Disposal

    DAkkS. At this calibration, the uncertainty of measurement of the torque measuring instrument is determined. Further information can be obtained from Lorenz Messtechnik GmbH. 11.3 Re-Calibration The recalibration of the torque sensor should be carried out after 26 months at the latest.

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