Capacitive Rotary Encoder : Superior EMI & Magnetic Resistance

VLP-140

The Netzer VLP-140 Absolute Rotary Encoder delivers up to 23-bit resolution with 0.006 Degree accuracy, housed in an ultra-thin (<10 mm), lightweight (<72g) form. Using contactless capacitive sensing technology, it provides exceptional reliability and long-term stability, eliminating mechanical wear for superior performance.

Optimized for aerospace, robotics, defense, and high-precision automation, the VLP-140 features a hollow, low-inertia design, reducing system weight and enhancing dynamic response. When high-accuracy rotary feedback in a compact, cutting-edge package is required, the VLP-140 sets a new industry standard.

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Features

Extreme accuracy with precision better than 0.006 degrees
Hollow shaft for improved dynamic response
EMI and RFI resistant design
Contactless capacitive sensing for wear-free operation
Durable construction for long-term reliability
Temperature drift compensation for accuracy stability

Unique Values

Hollow Shaft
High precision
Durability
Repeatability

OD

140 mm
ID

90 mm
Height

8 mm
Weight

80 gr
Resolution

17-23 bit
Accuracy

±0.006˚

Technical Data

Technical Drawing

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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 ±0.15 mm
Allowable axial mounting tolerance ±0.3 mm
Rotor inertia 88,555 gr · mm²
Total weight 80 gr
Outer Ø / Inner Ø / Height 140 / 90 / 8 mm
Material (stator / rotor) FR4
Nominal air gap (stator, rotor) 1 mm

Electrical

Supply voltage 5V ± 5%
Current consumption ~100 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

space robotics 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