Extreme Accuracy Encoders for Critical Applications

VLT-140

The Netzer VLT-140 Absolute Rotary Encoder delivers up to 23-bit resolution with 0.006 mdeg 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 VLT-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 VLT-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

Accuracy

±0.006˚
Resolution

17-23 bit
OD

140 mm
ID

90 mm
Height

8 mm
Weight

80 gr

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, unlimited
Built In Test BIT Optional
Rotation direction Adjustable CW/CCW (Default same direction from bottom side of the encoder)

Mechanical

Allowable mounting eccentricity ±0.15 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 -55°C to +125°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