无轴编码器 VLS-25 | 轻型绝对式设计

VLS-25

Netzer VLS-25 绝对式旋转编码器是 VLS 系列中最小的产品，专为要求超紧凑、高精度运动控制的宇航或洁净室应用而设计。这款超薄（<5.8 mm）、超轻（<8g）的编码器具有高达 21 位的分辨率和 0.025 度的精度，可确保在真空和污染敏感环境中实现长期无磨损的运行。

其非接触式电容测量技术是卫星定位、光学仪器、晶圆处理机器人和半导体制造领域高精度定位系统的理想之选。

Netzer 的 VLS 绝对编码器已在下一代空间和半导体系统中得到验证 - 采集、指向和跟踪 (APT)、卫星间光学链路 (OISL)、自由空间光学链路 (FSO)、深空光通信 (DSOC) 和卫星间链路 (ISL)。工程师选择 VLS 是为了获得精确的位置反馈，从而在苛刻的环境中实现精确定位、快速捕获目标和长期稳定跟踪。

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Features

COTS space-tested for reliable performance in demanding environments
Exceptional repeatability with high-precision rotary feedback
Wear-free operation enabled by contactless capacitive sensing
Best-in-class accuracy through scaled precision technology
Superior resistance to magnetic interference and EMI
Built for long-term durability with minimal maintenance needs

优点

Small Size
Wide mounting
High precision
Scaled Precision

外径

25 mm
内径

2.2 mm
厚度

5.8 mm
重量

8 gr
分辨率

17-21 bit
绝对定位精度

±0.025°˚

技术指标

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General

Angular resolution 17-21 bit
Nominal position accuracy ±0.025°
Repeatability 2.7 mdeg / 9.9 Arcsec
Maximum operational speed 8,000 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 ±0.1 mm
Allowable axial mounting tolerance ±0.15 mm / ±0.2 mm using auto calibration
Rotor inertia 37.8 gr · mm²
Total weight 8 gr (including 250mm cable)
Outer Ø /Inner Ø / Height 25 / 2.2 / 5.8 mm
Nominal air gap (stator, rotor) 0.6 mm
Material (stator / rotor) Polyamide

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 35 kHz (Optional - up to 375 kHz)

Environmental

EMC IEC 6100-6-2, IEC 6100-6-4
Operating temperature range -40°C to +105°C
Storage temperature -40°C to +105°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 GSFC-STD-7000A, 14.1grms @ 20 to 2000Hz
Protection IP 40

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外径
- 25 mm (ID - 2.2 mm)
- 59.7 mm (ID - 25 mm)
- 80 mm (ID - 35 mm)
- 100 mm (ID - 48 mm)
- 140 mm (ID - 90 mm)
- 170 mm (ID - 110 mm)
- 247.7 mm (ID - 171.4 mm)
通讯类型
- BiSS
- SSi
分辨率
- 17 bit
- 18 bit
- 19 bit
- 20 bit
- 21 bit
- 22 bit
- 23 bit
BIT
- Disabled
- Enabled
虚拟多圈
- 2,048
- 4,096
- 8,192
- 16,384
- 32,768
- 无
出线类型
- 欧空局太空电缆
- 仅电线
- 护套和屏蔽电缆
- 屏蔽电缆
线缆长度
- 250 mm Flying leads - 28AWG
- 500 mm Flying leads - 28AWG
- 750 mm Flying leads - 28AWG
- 1000 mm Flying leads - 28AWG
转子类型
- 空心轴编码器
- 端轴 - 单螺杆 VL25
- 带插件的轴
客户
- High Temperature