Absolute Angle Encoder : Ultra-High Resolution & Multi-Protocols

VLZ-170

The Netzer VLZ-170 Absolute Rotary Encoder delivers industry-leading 26-bit resolution with outstanding ±0.001-degree accuracy and ±1 arc-second repeatability, ensuring precise and reliable position feedback. Its robust hollow shaft design allows for seamless integration and easy routing of cables or optics, making it ideal for complex system architectures.

With ultra-low latency under 1 µs and a high MTBF for long-term durability, the VLZ-170 is engineered for direct-drive motors, rotary tables, precision CNC machines, and semiconductor processing equipment.

Designed for high-performance motion control, the VLZ-170 sets a new standard in absolute rotary encoder technology.

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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

175 mm
ID

110 mm
Height

12.5 mm
Weight

830 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 Absolute with optional shaft turn counter
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 205,330 gr · mm²
Total weight 450gr
Outer Ø /Inner Ø / Height 175 / 110 / 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 ~250 mA
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 -45°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