Accessories-for-measuring-systems

Absolute encoders with PROFINET IO 6FX20015WN25

ABS.VALUE ENCODER 6FX2001-5WN25 MULTITURN 27 BIT WITH PROFINET OPERATE VOLTAGE 10-30V HOLLOW SHAFT/ 8/10/12/15MM CONNECTOR M12 RADIAL

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6FX2001-5WN25 6FX20015WN25 ABS.VALUE ENCODER 6FX2001-5WN25 MULTITURN 27 BIT WITH PROFINET OPERATE VOLTAGE 10-30V HOLLOW SHAFT/ 8/10/12/15MM CONNECTOR M12 RADIAL6FX2001-5WN25_datasheet_en

Function of Absolute encoders

Absolute encoders output an absolute angular position between 0° and 360°. They operate on the same scanning principle as incremental encoders, but have a greater number of tracks. For example, if there are 13 tracks, then 213 = 8192 steps are coded in the case of single-turn encoders. The code used is a one-step code (gray code). This prevents any scanning errors from occurring. After switching on the machine, the position value is transferred immediately to the controller, travel to a reference point is not necessary.

All absolute encoders are available in single-turn and multi-turn versions.

Single‑turn encoders

Single-turn encoders divide one rotation (360 degrees mechanical) into a specific number of steps, e.g. 8192. A unique code word is assigned to each position. After 360° the position values are repeated.

Multi‑turn encoders

Multi-turn encoders record the number of revolutions in addition to the absolute position within one revolution. To do this, further code discs which are coupled via gear steps with the encoder shaft are scanned. When evaluating 12 additional tracks, this means that an additional 212 = 4096 revolutions can be coded.

Interfaces

The following interfaces are supported by the absolute encoders:

 

Interface Benefits
DRIVE-CLiQ
  • Very high data transfer rates possible
  • Advantages in time-critical applications
  • Simple and quick automatic configuration using electronic rating plates
  • Fast and easy diagnostics with a single tool
  • One interface for connecting drives as well as indirect and direct measurement systems to the CNC.
SSI
  • Advantages in time-critical applications
EnDat 2.1
  • High data transfer rate, bidirectional
  • Advantages in time-critical applications
  • Incremental track with 1 Vpp
  • Connection via SINAMICS Sensor Modules SMC/SME
PROFIBUS DP-V2
  • Parameterizable built-on encoder
  • Reduced wiring overhead in plants with a large number of encoders
  • Isochronous operation and direct data exchange
PROFINET IO
  • Parameterizable built-on encoder
  • Reduced wiring overhead in plants with a large number of encoders
  • Supports RT and IRT operating modes
  • IRT (isochronous mode)
  • 2 ports

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