Miniature Absolute Encoder with Hollow Shaft Design

VLP-35

The Netzer VLP-35 Absolute Rotary Encoder delivers up to 21-bit resolution with 0.035 mdeg 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

Accuracy

±0.035˚
Resolution

17-21 bit
OD

35 mm
ID

11 mm
Height

6.2 mm
Weight

10.4 gr

Technical Data

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General

Angular resolution 17-21 bit
Nominal position accuracy ±0.035°
Repeatability 1.4 mdeg / 4.9 Arcsec
Maximum operational speed 6,000 rpm
Measurement range Single turn, unlimited
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

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OD
- 25 mm
- 35 mm
- 60 mm
- 80 mm
- 100 mm
- 140 mm
- 170 mm
- 247 mm
Output
- BiSS
- SSi
Resolution
- 17 bit
- 18 bit
- 19 bit
- 20 bit
- 21 bit
- 22 bit
- 23 bit
Bit
- BIT
Shaft-turn Counter
- 4,096
- 8,192
- 16,384
- 32,768
Cable Options
- 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
Rotor Type
- End Shaft - Single Screw Rotor
- Hollow Shaft Encoder
Coating
- Parylene
Custom