User Instructions

Structure and mode of operation
18 HBM: public T12CVS8
7 Structure and mode of operation
The torque transducer comprises two separate parts: the rotor and the stator.
Strain gages (SG) to determine the torque are installed on the rotor. Carrier
frequency technology (19.2 kHz carrier frequency) is used for the strain gage
analysis. The rotor temperature is measured at two measuring points and
averaged.
The electronics for transmitting the bridge excitation voltage and the
measurement signal are located centrally in the rotor. The coils for contactless
transmission of the excitation voltage and measurement signal are located on
the outer circumference of side A of the rotor. The signals are sent and
received by the transmitter head. The transmitter head is mounted on the
stator, which houses the electronics for voltage adaptation and signal
conditioning.
Connector plugs for the inputs and outputs are located on the stator (see
Section 10.3 for the pin assignment). The transmitter head encloses the rotor
over a segment of approx. 120 and should be mounted concentrically around
the rotor (see Chapter 8).
In the case of the rotational speed measuring system option, the speed sensor
is mounted on the stator, the customer attaches the associated slotted disc to
the rotor. The optical rotational speed measurement works on the infrared
transmitted light principle.