Hengstler Absolute Rotary Encoder ACURO AD34 - Wiratama Mitra Abadi | Industrial Equipment



Hengstler Absolute Rotary Encoder ACURO AD34

Hengstler Absolute Rotary Encoder ACURO AD34

The AD34 is the most compact absolute encoder in the class. It is available with a resolution up to 19 Bit Singleturn and 12 Bit Multiturn. The mechanical design consists of two ball bearings and flexible torque support. The AD34 complements the ACURO-DRIVE series and is appropriate for use within BLDC servo motors with small frame sizes. The AD34 is available with a notched shaft, which saves installation time.

Hengstler Absolute Rotary Encoder ACURO AD34 | Notched shaft saves installation cost

Because of its innovative shaft mounting the AD34 saves work on the motor shaft. A common 6 mm bore on the motor B - side is enough. AD34's notched shaft is inserted in the B side of the motor shaft in one process step.

The fully digital control loop

The new and completely digital OptoAsic technology enables the transition to a truly digital drive system. The conventional absolute encoders still have analog sine wave signals for the feedback of speed and position data. The AD34, however, provides fully digital position data up to 19 Bit per revolution over the BiSS interface with a variable clock rate up to 10 MHz. BiSS is the only open high-speed bidirectional sensor interface available on the market. Backward compatibility to most of the existing drives is realized through the variant with SSI interface together with 2048 sine -cosine periods per revolution.


  • For brushless servomotors
  • Unique installation concept: Saves installation time and costs
  • Installation depth: 25 mm (ST) 34 mm (MT)
  • Resolution up to 19 bits ST + 12 bits MT
  • +120°C operating temperature
  • 10,000 rpm in continuous operation
  • SSI or BiSS interface
  • Sinewave 1 Vpp
  • 500 kHz bandwidth

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Product Family


Ordering Information

Rotary Encoder AD34

Function / Application








Housing Diameter [mm]

38,1 mm

Solid- / Hollow Shaft

Solid 6 mm

Protection Rating Housing

< IP40

Operating Temperature [°C]

-15 ... +120 °C

Housing Option







PCB connector

Revolutions [rpm]

10,000 rpm

Resolution ST [Bit]

12 ... 19 Bit

Resolution MT [Bit]

12 Bit



Ref: hengstler.de

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Download Data Sheet: Absolute Rotary Encoder ACURO AD34

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