TONiC™ incremental encoder system with RSLM20 linear scale
Features
- Readhead size: 35 x 13.5 x 10 mm
- Resolutions to 1 nm
- Speed up to 10 m/s
- Analogue or digital outputs
- Ultra-low Sub-Divisional Error (SDE): typically < ±30 nm
- Vacuum and Functional Safety variants available
- Optical IN-TRAC™ reference mark
Benefits
- High accuracy spar scale
- Super-compact encoder with dynamic signal conditioning for improved motion control
- High dirt immunity
- Diagnostic kit to assist challenging installations and aid system optimisation
What is TONiC?
The TONiC™ series is a compact, non-contact incremental encoder system that offers speeds up to 10 m/s and, when combined with the Ti interface, resolutions down to 1 nm for both linear and rotary applications. Advanced filtering optics within the readhead give TONiC very low jitter, resulting in excellent positional stability and smoother velocity control. This makes TONiC the ideal encoder for applications where movement must be tightly controlled.
The TONiC encoder gives exceptional signal stability with low Sub-Divisional Error (SDE) of typically <±30 nm to help realise superior motion control performance.
TONiC encoders also feature an integrated setup LED for intuitive and efficient installation.
What is RSLM20 scale?
RSLM20 is a stainless steel spar scale featuring 20 µm pitch and a variety of IN-TRAC optical reference mark options, including regularly spaced for customer selection or single reference at the centre or close to the end.
It is comparable to fine pitch glass scales and offers a total accuracy (including slope and linearity) better than ±4 µm over a 5 m length. It can also be coiled for simple storage and handling yet once uncoiled behaves as a spar scale.
System designers can choose between specially formulated adhesive tape or mechanical clips to suit mounting requirements. Both mounting methods allow for independent thermal expansion to that of the substrate.
Why choose this encoder system?
Combines rugged reliability with higher accuracy
The TONiC RSLM20 system offers the convenience, ruggedness and ease of use of a tape scale yet offers a higher accuracy than glass scales making it ideal for long length, high performance axes.
Exceptional metrology
The TONiC encoder features Renishaw's market-proven filtering optics and advanced signal processing. Auto Gain Control (AGC) and Auto Offset Control (AOC) technologies reduce analogue signal noise and digital jitter within the readhead.
TONiC encoders deliver exceptionally low signal output jitter of <±0.5 nm RMS and low Sub-Divisional Error (SDE) of <±30 nm, enabling systems to hold position better and generate less heat in linear motor applications. Low jitter also enables smoother velocity control in high-precision applications operating at low speeds.
Flexible configuration
The TONiC series offers a variety of external interfaces that can be configured to meet the speed and resolution requirements of the application. With late-stage integration and configuration of the external interface, one versatile TONiC readhead offers many options for end user customisation.
TONiC interface options enable digital, analogue, or dual output of both digital and analogue signals. The TD (dual resolution) interface offers selectable dual-resolution output, and a DPI interface is also available for wide-format printing applications. The flexibility of TONiC encoder configuration allows OEMs to benefit from superior motion control and high throughput in a wide range of applications.
Interface options
TD (dual resolution) interface
- Selectable dual-resolutions quadrature output.
- Ideal for applications that require high speed movement combined with finer precision motion.
DOP (dual output) interface
- Provides simultaneous digital quadrature and 1 Vpp signals.
- Designed for applications requiring one or more operations to be synchronised with a motion axis.
Optional diagnostic kit
TONiC diagnostic software can be used to optimise the installation of TONiC encoders and provide a quick and comprehensive system calibration. The software must be used in conjunction with the TONiC diagnostic hardware which can be purchased from Renishaw using part number A-9411-0011. The hardware is connected to the PC via the USB cable (provided in the kit) or in-line with the customers' electronics.
Find out all about the TONiC diagnostic kit.
Technical specifications
Measuring standard | RSLM20: high accuracy stainless steel spar scale Also available with end reference mark as RSLE20, and with selectable reference mark as RSLC20 |
Readhead size (LxWxH) | 35 mm x 13.5 mm x 10 mm |
Scale pitch | 20 μm |
Coefficient of thermal expansion at 20 °C | 10.1 ±0.2 μm/m/°C |
Accuracy grade at 20 °C | ±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, calibration traceable to International Standards |
Reference mark | IN-TRAC reference mark Various reference mark position options, see data sheet for details |
Limit switches | Dual or single limits (select at time of order) |
Scale length | 80 mm to 5 m |
Maximum speed Analogue Digital | (See data sheet for details) Up to 10 m/s at -3 dB Up to 10 m/s |
Sub-Divisional Error (SDE) | Typically < ±30 nm |
Dynamic signal control | Real time signal conditioning including Auto Gain Control (AGC) and Auto Offset Control (AOC) for optimised performance during operation |
Incremental signals Analogue Digital | 1 Vpp (20 μm period) Resolutions from 5 μm to 1 nm |
Electrical connection | 0.5 m, 1 m, 1.5 m, 3 m, 5 m and 10 m cable lengths with mini connector (connects direct to TONiC interface) |
Power supply | 5 V ±10%, < 100 mA (analogue system), < 200 mA (digital systems) (unterminated) |
Vibration (operating) | 100 m/s2 max @ 55 Hz to 2 000 Hz |
Shock (non-operating) | 1 000 m/s2, 6 ms, ½ sine |
Operating temperature (system) | 0 °C to +70 °C |
Sealing | Readhead: IP40 Interface: IP20 |
Refer to data sheets for full details.