DS-25 | ABSOLUTE ROTARY ENCODER Hollow Shaft | Polymer Encapsulated
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Applications
Features
- Lightweight miniature absolute rotary encoder
- Hollow floating shaft
- No bearing or other contacts
- High precision
- High tolerance to temperature extremes, shock,
EMI, RFI and magnetic fields - Digital interfaces for absolute position
![](https://netzerprecision.com/wp-content/uploads/2023/06/DS-25.png)
![](https://netzerprecision.com/wp-content/uploads/2023/08/DS-25-02.png)
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OD
25 mm
ID
6 mm
Height
7 mm
Weight
10 gr
Resolution
17-19 bit
Accuracy
±0.010°
The DS-25 miniature absolute rotary encoder is an advanced engineering feat in a compact package. This encoder is incredibly light and small, with a hollow floating shaft and a non-contact design that ensures reliable and long-lasting performance. With a resolution of 17-19 bits and exceptional accuracy (±0.010°), it is perfect for high-precision applications. Its robust construction with Ultem™ polymer and TRVX-50 materials, along with its ability to tolerate extreme temperatures, shock, EMI, RFI, and magnetic fields, makes it reliable and suitable for operation in diverse environments. The DS-25 offers versatile connectivity options with SSi/BiSS-C communication, a differential RS-422 serial output, and a #30 shielded cable interconnection. It's also compliant with EMC standards (IEC 6100-6-2, IEC 6100-6-4), and can operate effectively within a temperature range of -40°C to +85°C, making it an ideal choice for challenging industrial settings.
* Segmentally enhanced accuracy is available upon request. Contact Netzer for more information.
* Segmentally enhanced accuracy is available upon request. Contact Netzer for more information.
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Technical Drawing
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General
Angular resolution17-19 bitNominal position accuracy±0.020°Nominal position extended accuracy (EA)±0.010°Repeatability2.7 mdeg / 9.9 ArcsecMaximum operational speed4,000 rpmMeasurement rangeSingle turn absolute positionBuild In Test BITOptionalRotation directionAdjustable CW/CCW (Default same direction from bottom side of the encoder) -
Mechanical
Allowable mounting eccentricity±0.1 mmAllowable axial mounting tolerance±0.1 mmRotor inertia11 gr · mm²Total weight10 grOuter Ø /Inner Ø / Height25 / 6 / 7 mmMaterial (stator / rotor)Ultem™ polymer / TRVX-50 -
Electrical
Supply voltage5V ±5%Current consumption~90 mAInterconnection#30 shielded cableCommunicationSSi / BiSS - COutput codeBinarySerial outputDifferential RS-422Clock frequency0.1- 5.0 MHzPosition update rate35 kHz (Optional - up to 375 KHz) -
Environmental
EMCIEC 6100-6-2, IEC 6100-6-4Operating temperature-40°C to +85°CStorage temperature-50°C to +85°CRelative humidity98% Non condensingShock endurance / functional100 g for 11 ms / 40g 11ms (per MIL-STD-810G)Vibration functional20 g 10 – 2000 Hz (per MIL-STD-810G)ProtectionIP 40
![OC DS-25 Miniature Absolute Rotary Encoders](https://netzerprecision.com/wp-content/uploads/2023/01/OC-DS-25.png)
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