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TONiC™ encoder series

The TONiC series is Renishaw's super-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. TONiC systems are quick and simple to install with wide set-up tolerances and calibration at the push of a button. The TONiC encoder's dynamic signal processing gives improved signal stability with ultra-low Sub-Divisional Error of typically <±30 nm to help realise superior motion control performance.

Additionally, it is available in 2 more application-specific variants:

TONiC UHV brings incremental encoder technology to ultra-high vacuum applications up to 10-10 Torr where high performance in a compact form factor is required.

TONiC FS (Functional Safety) is certified to SIL2 and PLd for functional safety applications.

Website cameo: TONiC readhead

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

Coefficient of thermal expansion at 20 °C

Supplied length

Readhead compatibility

RTLC20 with optional FASTRACK™

RTLC20 FASTRACK scale

±5 µm/m

20 µm

10.1 ±0.2 µm/m/°C

Up to 10 m (>10 m on request)

TONiC, TONiC UHV, TONiC FS

Narrow stainless steel tape scale

Scale name

Accuracy

Scale pitch

Coefficient of thermal expansion

Supplied length

Readhead compatibility

RKLC20-S

RKLC20 scale

±5 μm/m

20 µm

Matched to substrate material when scale ends are fixed with end clamps

Up to 20 m (>20 m on request)

TONiC, TONiC UHV

ZeroMet™ spar 

Scale name

Accuracy

Scale pitch

Coefficient of thermal expansion at 20 °C

Supplied length

Readhead compatibility

RELM20/RELE20

RELM RSLM scale

±1 µm for up to 1 m, then ±1 µm/m

20 µm

0.75 ±0.35 µm/m/°C

Up to 1.5 m

TONiC, TONiC UHV, TONiC FS

Stainless steel spar

Scale name

Accuracy

Scale pitch

Coefficient of thermal expansion at 20 °C

Supplied length

Readhead compatibility

RSLM20/RSLE20/RSLC20

RELM RSLM scale

±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

Up to 5 m

TONiC, TONiC UHV, TONiC FS

Gold plated tape

Scale name

Accuracy

Scale pitch

Coefficient of thermal expansion

Supplied length

Readhead compatibility

RGSZ20/RGSN20

RGSZ20-S scale

±15 µm/m

20 µm

Thermally mastered to substrate by use of end clamps

Up to 50 m (>50 m contact Renishaw)

TONiC, TONiC UHV

Stainless steel ring

Scale name

Graduation accuracy (depending on ring diameter)

Scale pitch

Coefficient of thermal expansion at 20 °C

Ring diameter

Readhead compatibility

RESM20/REST20

RESM-REST scale

±3.97 to ±0.38 arc seconds

20 µm

15.5 ±0.5 μm/m/°C

52 to 550 mm

TONiC, TONiC UHV, TONiC FS

Ultra-high accuracy stainless steel ring 

Scale name

Installed accuracy (depending on ring diameter)

Scale pitch

Coefficient of thermal expansion at 20 °C

Ring diameter

Readhead compatibility

REXM20/REXT20

REXM scale (scale page)

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

20 µm

15.5 ±0.5 µm/m/°C

 52 to 417 mm

TONiC, TONiC UHV