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) typically <±10 nm for VIONiCplus™ 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 ADTi-100 provides comprehensive feedback through an intuitive software interface.
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 |
Sub-Divisional Error (SDE)
Ultra-low Sub-Divisional Error (SDE) of typically <±30 nm for VIONiC and <±10 nm for VIONiCplus linear readheads.
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
Scale name | Accuracy | Scale pitch | Thermal expansion coefficient at 20 °C | Max length of scale | Encoder system |
RTLC20 with optional FASTRACK | ±5 µm/m | 20 µm | 10.1 ±0.2 µm/m/°C | 10 m |
ZeroMet™ spar
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 |
Stainless steel spar
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 |
Stainless steel ring
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
|
Ultra-high accuracy stainless steel ring
Scale name | Installed accuracy (depending on ring diameter) | Scale pitch | Ring diameter | Encoder system |
REXM/REXT | (≥100 mm diameter) ±1 arc second | 20 µm | 52 to 417 mm |
Optional Advanced Diagnostic Tools ADTi-100
The VIONiC encoder system is compatible with the Advanced Diagnostic Tool ADTi-100 and ADT View software. They provide comprehensive real-time encoder data feedback to aid more challenging installations and diagnostics. The intuitive software interface can be used for:
- Remote calibration
- Signal optimisation over the entire axis length
- Readhead pitch indication
- Limit and reference mark indication
- Digital readout of encoder position (relative to the scale)
- Monitoring the velocity against time graph
- Exporting and saving data