Shaft Position Encoder with Advanced High-Precision Feedback

VLZ-140

The Netzer VLZ-140 Absolute Rotary Encoder sets a new benchmark in precision motion control with up to 26-bit resolution, delivering exceptional ±0.001-degree accuracy and ±1 arc-second repeatability.

Featuring a hollow shaft design for easy system integration and optimized cable or optics routing, the VLZ-140 simplifies machine architecture without compromising performance.

With ultra-low latency under 1 µs and a high MTBF for maximum uptime, it is ideal for rotary stages, direct-drive motors, precision milling centers, and semiconductor manufacturing equipment.

The VLZ-140 combines reliability, flexibility, and cutting-edge accuracy — redefining absolute rotary position sensing.

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Features

Low Installation Sensitivity – Axial Tolerance ±0.2 mm to 0.03 mm: Allows quick and precise setup without complex alignment.
Instant Response – Latency Under 1 µs: Fast performance across multiple interfaces including AqB, BiSS-C, SSI, RS-485, and SPI.
Smart Diagnostics – Built-in BIT, Error, and Warning Detection: Includes IMU-based shock and vibration monitoring for continuous system health.
Flexible Mounting – On-Clamp or Bearing-Like Installation: Space-saving design for easy integration.
Magnetic Immune – Unaffected by EMI and Magnetic Fields: Ideal for direct-drive motors, magnetic fields, and surgical energy environments.
Built-In IMU – Advanced Rotation Diagnostics: Provides real-time motion and temperature data for enhanced performance monitoring.

Unique Values

Hollow Shaft
High precision
Durability
Wide mounting

OD

145 mm
ID

94 mm
Height

12.5 mm
Weight

700 gr
Resolution

17-26 bit
Accuracy

±0.001˚

Technical Data

Technical Drawing

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General

Angular resolution 17-26 bit
Nominal position accuracy ±0.001°
Repeatability 0.278 mdeg / 1 Arcsec
Maximum operational speed up to 6,000 rpm
Measurement range Single turn, unlimited
IMU – Advanced Rotation Diagnostics 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 261,774 gr · mm²
Total weight 700 gr
Outer Ø /Inner Ø / Height 145 / 94/ 12.5 mm
Material (stator / rotor) FR4 + Stainless Steel/Aluminum
Nominal air gap (stator, rotor) 1 mm
Starting Torque 0

Electrical

Supply voltage 5V ± 5%
Current consumption ~250mA
Interconnection Cable (standard 250mm)
Communication SSi / BiSS-C / AqB/ RS485 / SPI
Serial output Differential RS-422
Clock frequency 0.1-5.0 MHz
Position update rate 50 kHz

Environmental

EMC IEC 6100-6-2, IEC 6100-6-4
Operating temperature -40°C to +85°C
Storage temperature -55°C to +100°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