Miniature Absolute Encoder with Hollow Shaft Design

VLP-35

The Netzer VLP-35 Absolute Rotary Encoder delivers up to 19-bit resolution with 0.035 Degree accuracy in an ultra-thin (<7 mm) and ultra-lightweight (<8g) package, making it one of the smallest high-performance encoders available. Built with contactless capacitive sensing technology, it ensures wear-free operation for long-term reliability in precision motion control systems.

Optimized for aerospace, robotics, medical devices, and compact automation systems, the VLP-35’s hollow, low-inertia structure minimizes system weight and enhances dynamic response. If high-accuracy rotary feedback in a compact form factor is required, the VLP-35 offers an unparalleled solution for space-sensitive applications.

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Features

High tolerance to electromagnetic and radio frequency interference
Miniature, high-precision absolute rotary encoder
Contactless operation for wear-free performance
Hollow shaft design with optimized mounting flexibility
Ultra-thin and lightweight structure for seamless integration
Advanced temperature drift compensation for stability

Unique Values

High precision
Light weigth
Hollow Shaft
MTBF 15

OD

35 mm
ID

11 mm
Height

6.2 mm
Weight

10.4 gr
Resolution

17-19 bit
Accuracy

±0.035˚

Technical Data

Technical Drawing

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General

Angular resolution 17-19 bit
Nominal position accuracy ±0.035°
Repeatability 1.4 mdeg / 4.9 Arcsec
Maximum operational speed 6,000 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 ±0.2 mm
Rotor inertia 177 gr · mm²
Total weight 10.4 gr (Including 250mm cable)
Outer Ø /Inner Ø / Height 35 / 11 / 6.2 mm
Material (stator / rotor) FR4
Nominal air gap (stator, rotor) 0.6 mm

Electrical

Supply voltage 5V ±5%
Current consumption ~90 mA
Interconnection Cable (standard 250mm)
Communication SSi / BiSS-C
Output code Binary
Serial output Differential RS-422
Clock frequency 0.1- 5.0 MHz
Position update rate 28 kHz

Environmental

EMC IEC 6100-6-2, IEC 6100-6-4
Operating temperature range -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

Miniature Absolute Encoder using absolute rotary encoder technology

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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
- 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