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VIONiC™ encoder series

The VIONiC series is Renishaw's ultra-high accuracy, all in-one digital incremental encoder for both linear and rotary applications. VIONiC combines all necessary interpolation and digital signal processing inside the readhead, with Sub-Divisional Error (SDE) as low as <±10 nm and resolutions down to 2.5 nm.

Available in two variants, the VIONiC and VIONiCplus™ readheads offer a wide range of configurations to optimise the speed and performance of your motion control systems.

An optional Advanced Diagnostic Tool (ADT) provides comprehensive feedback through an intuitive software interface.

* Downloads include data sheets, installation guides, videos, software, technical drawings.

Key features

Difference between VIONiC and VIONiCplus

Features

VIONiC

VIONiCplus

Outputs

Digital resolutions from 5 µm to 20 nm direct from the readhead

Digital resolutions from 0.1 µm to 2.5 nm direct from the readhead

Sub-Divisional Error: rotary Ø >135 mm and linear

Typically <±30 nm

Typically <±10 nm

Sub-Divisional Error: rotary Ø <135 mm

Typically <±30 nm

Typically <±20 nm

Jitter (RMS)

Down to 1.6 nm

Down to 1.6 nm

Maximum speed

12 m/s

3.63 m/s

High speed digital interpolation  

Clocked output

option (MHz)

VIONiC only

VIONiC and VIONiCplus

VIONiCplus only

Minimum edge

separation* (ns)

Maximum speed (m/s)

Maximum speed (m/s)

Maximum speed (m/s)

5 µm (D)

1 µm (X)

0.5 µm (Z)

0.2 µm (W)

0.1 µm (Y)

50 nm (H)

40 nm (M)

25 nm (P)

20 nm (I)

10 nm (O)

5 nm (Q)

2.5 nm (R)

50

12

12

12

7.25

3.63

1.81

1.45

0.906

0.725

0.363

0.181

0.091

25.3

40

12

12

12

5.80

2.90

1.45

1.16

0.725

0.580

0.290

0.145

0.073

31.8

25

12

12

9.06

3.63

1.81

0.906

0.725

0.453

0.363

0.181

0.091

0.045

51.2

20

12

12

8.06

3.22

1.61

0.806

0.645

0.403

0.322

0.161

0.081

0.040

57.7

12

12

10.36

5.18

2.07

1.04

0.518

0.414

0.259

0.207

0.104

0.052

0.026

90.2

10

12

8.53

4.27

1.71

0.850

0.427

0.341

0.213

0.171

0.085

0.043

0.021

110

08

12

6.91

3.45

1.38

0.690

0.345

0.276

0.173

0.138

0.069

0.035

0.017

136

06

12

5.37

2.69

1.07

0.540

0.269

0.215

0.134

0.107

0.054

0.027

0.013

175

04

12

3.63

1.81

0.730

0.360

0.181

0.145

0.091

0.073

0.036

0.018

0.009

259

01

4.53

0.910

0.450

0.180

0.090

0.045

0.036

0.023

0.018

0.009

0.005

0.002

1038

 *For a readhead with a 1 m cable

Sub-Divisional Error (SDE)

Ultra-low Sub-Divisional Error (SDE) of typically <±30 nm for VIONiC and <±10 nm for VIONiCplus linear readheads.

VIONiC SDE graph

Scale options

  • Linear scales are used where straight-line position information is needed - usually X, Y or Z axes.
  • Rotary scales are used for angular position information and the motion control of rotating elements.

Stainless steel tape with track option

Fastrack RTLR rectangular

Scale name

Accuracy

Scale pitch

Thermal expansion

coefficient at 20 °C

Max length of scale

Encoder system

RTLC with optional FASTRACK

±5 µm/m

20 µm

10.1 ±0.2 µm/m/°C

10 m

VIONiC with RTLC, VIONiCplus with RTLC

ZeroMet™ spar 

RELM linear scale with IN-TRAC reference mark

Scale name

Accuracy

Scale pitch

Thermal expansion

coefficient at 20 °C

Max length of scale

Encoder system

RELM/RELE

±1 µm for up to 1 m, then ±1 µm/m

20 µm

0.75 ±0.35 µm/m/°C

1.5 m

VIONiC with RELMVIONiCplus with RELM

Stainless steel spar

RELM Invar scale

Scale name

Accuracy

Scale pitch

Thermal expansion

coefficient at 20 °C

Max length of scale

Encoder system

RSLM/RSLE/RSLC

±1.5 µm up to 1 m, ±2.25 µm up to 2 m, ±3 µm up to 3 m, ±4 µm up to 5 m

20 µm

10.1 ±0.2 µm/m/°C

5 m

VIONiC with RSLM, VIONiCplus with RSLM

Stainless steel ring

RESR 3 rings

Scale name

Graduation accuracy (depending on ring diameter)

Scale pitch

Ring diameter

Encoder system

RESM/REST

±3.97 to ±0.38 arc seconds

20 µm

52 to 550 mm

 

 VIONiC with RESM, VIONiCplus with RESM

Ultra-high accuracy stainless steel ring 

REXM rings

Scale name

Installed accuracy (depending on ring diameter)

Scale pitch

Ring diameter

Encoder system

REXM/REXT

(≥100 mm diameter) ±1 arc second
(75 mm diameter) ±1.5 arc seconds
(≤57 mm diameter) ±2 arc seconds

20 µm

52 to 417 mm

 VIONiC with REXM, VIONiCplus with REXM

Optional Advanced Diagnostic Tools

The Advanced Diagnostic Tool is available for comprehensive real-time feedback from the VIONiC encoders. This can be used to aid challenging installlations and fault finding. It provides:

  • Remote calibration functions
  • Signal optimisation over axis length
  • Readhead pitch indication
  • Limit and reference mark indicators
  • Digital readout of the readhead position (relative to the scale)
  • Lissajous outputs
Find out more about the Advanced Diagnostic Tool.