Non Contact Encoder : Precise Contactless Encoder Technology

DS-70

The Netzer DS-70 Absolute Rotary Encoder brings high precision (23-bit resolution, 0.006-degree accuracy) to demanding motion control systems. With its advanced contactless sensing technology, the DS-70 ensures long-term reliability without mechanical degradation. Built for mission-critical applications in aerospace, defense, and automation, its lightweight, low-inertia design enhances system responsiveness and efficiency, making it an industry-leading choice for precision rotary feedback.

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Features

23-bit resolution for superior precision
Hollow shaft with optimized mounting flexibility
EMI and RFI immunity for stable performance
Contactless operation for extended durability
Designed for high dynamic response in motion systems

Unique Values

High precision
Durability
Repeatability
Low Profile

OD

70 mm
ID

30 mm
Height

10 mm
Weight

49 gr
Resolution

18-23 bit
Accuracy

±0.008˚

Technical Data

Technical Drawing

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General

Angular resolution 19-23 bit
Nominal position accuracy ±0.010°
Nominal position extended accuracy (EA) ±0.006°
Repeatability 0.7 mdeg / 2.5 Arcsec
Maximum operational speed 1,500 rpm
Measurement range Single Turn Absolute with optional shaft turn counter
Build In Test BIT Optional
Rotation direction Adjustable CW/CCW (Default same direction from bottom side of the encoder)

Mechanical

Allowable mounting eccentricity ±0.1 mm
Allowable axial mounting tolerance ±0.1 mm
Rotor inertia 1,940 gr · mm²
Total weight 49 gr
Outer Ø /Inner Ø/ Height 70 / 30 / 10 mm
Material (stator / rotor) TRVX-50

Electrical

Supply voltage 5V ±5%
Current consumption ~90 mA
Interconnection #30 shielded cable
Communication SSi / BiSS-C
Output code Binary
Serial output Differential RS-422
Clock frequency 0.1- 5.0 MHz
Position update rate 35 kHz (Optional - up to 375 kHz)

Environmental

EMC IEC 6100-6-2, IEC 6100-6-4
Operating temperature -40°C to +85°C
Operating temperature -50°C to +85°C
Relative humidity 98% Non condensing
Shock endurance / functional 100 g for 11 ms
Vibration functional 20 g 10 – 2000 Hz (per MIL-STD-810G)
Protection IP 40

Non Contact Encoder using absolute rotary encoder technology

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OD
- 16 mm (ID - 4 mm)
- 25 mm (ID - 6 mm)
- 37 mm (ID - 10 mm)
- 40 mm (ID - 10 mm)
- 58 mm (ID - 20 mm)
- 70 mm (ID - 30 mm)
- 90 mm (ID - 50 mm)
- 130 mm (ID - 90 mm)
Communication
- BiSS
- SSi
Resolution
- 16 bit
- 17 bit
- 18 bit
- 19 bit
- 20 bit
- 21 bit
- 22 bit
- 23 bit
BIT
- Disabled
- Enabled
Cable Type
- Jacket and shielded cable
- Shielded cable
- Wires only
Cable Length
- 250 mm Flying leads - 30AWG
- 500 mm Flying leads - 30AWG
- 750 mm Flying leads - 30AWG
- 1000 mm Flying leads - 30AWG
- 250 mm Flying leads - 28AWG
- 500 mm Flying leads - 28AWG
- 750 mm Flying leads - 28AWG
- 1000 mm Flying leads - 28AWG
Extended Accuracy
- Enabled
- Disabled