T40FM - Digital torque flange

Frequency reserves for the test bench construction

The T40FM's extremely high torsional stiffness and the reduced mass moment of inertia result in a significantly better natural torsion frequency of the torque flange. This creates the condition for further expansion of resonance frequency up to higher values during dynamic measurements in test bench applications. This allows the reserves up to the resonance frequency to be increased for numerous operating conditions. The entire construction is protected, failures are prevented and so costs are saved.

High limit loads during torque peaks

The mechanically robust measuring body of the T40FM can withstand, depending on the nominal (rated) measuring range, a peak load of up to 660 %. Torque peaks can thus be absorbed. This saves test bench construction costs and increases safety and the overall availability of the plant.

Clever design

Strain gages are located within the T40FM torque flange's measuring body giving excellent protection against environmental influences such as dirt and moisture. Protection up to IP54 is provided; optimal conditions for applications in tough industrial environments.

Speed measurement with magnetoresistive sensors

Another plus for industrial applications: The T40FM can optionally be equipped with a speed measuring system. A magnetic speed measuring system is far superior to an optical system in rough industrial operations as dirt, such as dust or oil, does not have an influence on the signal. Due to the options of the magnetic principle, the output pulse count remains identical with 1024 pulses per revolution for all measurement ranges up to 80 kNm. The integrated speed transducer simplifies handling and creates room for other tasks.

Secure transmission of measured values through digital communication

The T40FM torque flange impresses with a secure, digital transmission of measured values. A special sigma-delta converter is used for the digitalization and transmission of the measured values from the rotor to the stator. The transmission speed of 1.0 MBaud, with error detection, ensures insensitivity to noise without loss of data or accuracy, even in EMC-critical applications. Due to the special analog-digital conversion, combined with the high sampling rate of 38,125 measured values/s, problems with internal aliasing are securely excluded.

The digital TMC interface in the torque flange stator enables communication with the TIM40 torque interface module. It supports various fieldbuses, such as CAN, Profibus-DP or EtherCat. This makes simple integration in fieldbus based test bench concepts possible.

Digital data exchange between automation system and field device

Upgrading made easy

As the T40FM rotor has the same dimensions as the T10FM rotor, upgrade compatibility is ensured. Simply exchanging the rotor and corresponding stator means that existing plants can also profit from the improved properties of the T40FM.