Shaft Position Encoder with Advanced High-Precision Feedback

VLP-170

The Netzer VLP-170 Absolute Rotary Encoder offers up to 23-bit resolution with 0.006 Degree accuracy in an ultra-thin (<10 mm) and lightweight (<106g) package. Powered by contactless capacitive sensing technology, it ensures high reliability and wear-free performance, making it ideal for demanding applications.

Designed for aerospace, robotics, defense, and high-precision industrial automation, the VLP-170 features a hollow, low-inertia structure, minimizing system mass and enhancing dynamic response. When precision, durability, and compact size matter, the VLP-170 delivers unmatched rotary feedback performance.

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Features

Lightweight absolute rotary encoder
Hollow floating shaft
No bearing or other contacts
High precision
High tolerance to EMI, RFI, and magnetic fields
Digital interfaces for absolute position

Unique Values

Hollow Shaft
High precision
Durability
Wide mounting

OD

170 mm
ID

110 mm
Height

8 mm
Weight

110 gr
Resolution

17-23 bit
Accuracy

±0.006°˚

Technical Data

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General

Angular resolution 17-23 bit
Nominal position accuracy ±0.006°
Repeatability 0.7 mdeg / 2.5 Arcsec
Maximum operational speed 2,000 rpm
Measurement range Single Turn Absolute with optional shaft turn counter
Built 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 ±0.3 mm
Rotor inertia 205,330 gr · mm²
Total weight 110 gr
Outer Ø /Inner Ø / Height 170 / 110 / 8 mm
Material (stator / rotor) FR4
Nominal air gap (stator, rotor) 1 mm

Electrical

Supply voltage 5V ± 5%
Current consumption ~90 mA
Interconnection Cable (standard 250mm)
Communication SSi / BiSS-C
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 +105°C
Storage temperature -55°C to +125°C
Relative humidity 98% Non condensing
Shock endurance / functional 100g 6msec saw-tooth per IEC 60068-2-27:2009 40g 11msec saw-tooth per MIL-810G
Vibration functional 7.7grms @ 20 to 2000 Hz per MIL-810G Category 24
Protection IP 40

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OD
- 13.5 mm (ID - )
- 25 mm (ID - 2.2 mm)
- 35 mm (ID - 11 mm)
- 60 mm (ID - 25 mm)
- 80 mm (ID - 35 mm)
- 100 mm (ID - 48 mm)
- 140 mm (ID - 90 mm)
- 170 mm (ID - 110 mm)
- 247 mm (ID - 171 mm)
Communication
- BiSS
- SSi
Resolution
- 14 bit
- 15 bit
- 16 bit
- 17 bit
- 18 bit
- 19 bit
- 20 bit
- 21 bit
- 22 bit
- 23 bit
BIT
- Disabled
- Enabled
Shaft-turn Counter
- 2,048
- 4,096
- 8,192
- 16,384
- 32,768
- None
Cable Type
- Jacket and shielded cable
- Shielded cable
- Wires only
- ESA Space Cable
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
Rotor Type
- Hollow Shaft Encoder
- End Shaft - Single Screw- VL35
- End Shaft - Single Screw VL25
- Shaft with Insert
Coating
- Standard Conformal
- Parylene