June 8, 2020 - The TBN/TRN-S4 Series has been awarded SIL2 certification by TÜV, thus meeting the requirements for use in safety-related applications. TWK's safety series of magnetic encoders is expanded with the TBN/TRN-S4 series, which features increased resolution in the single-turn range (model TBN) and a variety of different applications. The resolution of the sensor system can be up to 16-bits.
The detection of the multiturn part, i.e. the number of revolutions (max.12-bit), is done by an absolute multiturn gear (model TRN). In addition to the safe position value, a safe speed signal is generated.
The gate time can be varied to record the speed value. The default value is 100 ms. The gate time can be parameterized from 1 to 1000 ms depending on the requirements, thus enabling use of the speed signal for e.g. slewing ring applications or time-relevant requirements.
The customer can select various mechanical variants from the portfolio. These include: Clamping flange with shaft design, blind shaft for preferably Ø 12 mm, various shaft diameters (Ø6, Ø10 or Ø12 mm), optionally with flattening or feather key or Woodruff key. Customer-specific requirements can also be implemented together with the customer. The radial and axial shaft load is ≥ 250 N. This value also allows the use in harsh environments.
In order to meet special requirements, versions with a shock load of up to 500 g ±50 g are implemented in separate variants for extreme industrial conditions. In addition to the version made of seawater-resistant aluminium (AlMgSi1), the housing can be supplied in a stainless-steel version (1.4305 or 1.4404) for special requirements such as offshore applications or requirements from the food industry.
