Rotary encoder ETx25F for flange mounting

Rotary encoder with solid shaft and flange mounting in compact design (14.5 mm housing depth) as single or multi-turn variants and many electronics options

  • As single or programmable multiturn encoder
  • Digital signal processing
  • Analogue, incremental or SPI interface
  • Low housing depth (14.8 mm)
  • Developed and manufactured in Germany
VDCmAPWM signalincrementalSerial SPI/SERProtection class IP66
Data sheet
Resolution Incremental ≥ 1000 ppr., Absolute 12 bit, Absolute 14 bit
Functions / Features Without mech. stop, Teach-In function
Output signal Analogue, Serial, Incremental, PWM, SPI
Protection class Up to IP66
Sensor technology Hall Effect Encoder
Shaft diameter 6.00 mm, 6.35 mm
Housing diameter 23.5 mm
Mounting Flange
Electrical connection Axial, Strands, Cable
Effective electrical angle of rotation 0...10° up to 0...72000°
Housing depth 14.8 mm
ETx25F encoders, with a hardened and tempered metal sleeve ... more
Product description: Rotary encoder ETx25F for flange mounting

ETx25F encoders, with a hardened and tempered metal sleeve bearing, are used for reliable angle measurement in the application: as singleturn (360°) analogue, PWM, incremental or SPI output or as multiturn (up to 72,000°) with analogue output.

The ETx25F encoders are part of the ETx25 family. Common to these encoders is non-contact angle measurement based on Hall Technology, high reliability, long lifespan and independent linearity of up to ±0.3% for single-turn and ±0.05% @3600° for multi-turn variants. The latter can be programmed by the customer on site.

The ETx25F encoders are designed for environmental requirements with protection class up to IP55M/IP66S and continuous actuation speeds up to 100 rpm. Mounting is done with two M3 screws (not included). A circular groove for an optional O-ring is provided on the face of the ETx25F enclosure for protection against liquid and dust ingress. The O-ring (included with option D) is inserted between the mounting plate and the encoder to provide IP55M/IP66S protection. Electrical connection options such as round or ribbon cable complete the profile. The following electronics are available:

ETA25F Singleturn absolute encoder (redundant version ETA25FX):
Supplies an absolute analogue signal with 12-bit resolution. For safety-critical applications, galvanically isolated and redundant electronics are available (see ETA25FX series in the data sheet).

ETA25FPM programmable multiturn or single-turn absolute encoder:
Programmable encoder for rotation angles up to 72000° (200 revolutions), can also be used as programmable singleturn encoder. Resolution 12 bit, with current or voltage output. Signal can be programmed on site.

ETI25F singleturn incremental encoder:
With TTL, push-pull or open collector output signals

ETS25F serial singleturn encoder:
Digital signals with SPI interface (14 bit resolution), redundantly available (ETS25FX series).

ETP25F PWM single-turn encoder:
With PWM output

The ETA25FPM is a multiturn encoder. The electrical effective angle of 10 turns (3600°, CW) is preset at the factory. If you require specific angle ranges for your application (up to 72,000°, CW/CCW), you have the option of having us program the electrically effective angle and sense of rotation or making the settings yourself on site. For the latter, we recommend our "PRO" programming unit. It can be used to make the settings for each and thus any number of ETA25FPMs. Of course, you can adjust the encoder to the application by means of an external circuit (of your own), which we describe in the programming instructions.

The wide selection of electronics variants for different power supplies as well as the multitude of electrical interfaces for the output of measured values make it possible to optimally integrate ETx25F encoders into the application. In addition, the encoders can be customized. But already on the basis of the order matrices in the data sheets, hundreds of possible combinations can be realized at short notice. Popular options include

  • changing the direction of rotation from CW (clockwise) to CCW (counterclockwise)
  • user-defined rotation angles
  • sealing rings for higher IP protection of the shaft and for sealing between housing and mounting surface
My products