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RESOLUTE™ encoder series

What is RESOLUTE?

RESOLUTE is a true-absolute, fine pitch optical encoder system that has excellent dirt immunity, and an impressive specification that breaks new ground in position feedback. It is the world's first absolute encoder capable of 1 nm resolution up to 100 m/s for linear systems, and 32-bit resolution up to 36 000 rev/min for rotary systems. Ultra low Sub-Divisional Error and jitter result in a linear encoder system that outperforms any other encoder in its class.

The Queen's Award for Enterprise: Innovation 2015

Additionally, RESOLUTE is available in 2 more application-specific 'versions':

  • RESOLUTE UHV brings absolute encoder technology to ultra-high vacuum applications up to 10-10 Torr, allowing customers to achieve higher throughput, reduce risks of damage and increase dependability.
  • RESOLUTE ETR (Extended Temperature Range) is a true-absolute, fine pitch optical encoder system that is able to operate in environments with extreme high and low temperatures.

RESOLUTE is the winner of a Queen's Award for Enterprise 2015 in the Innovation category

Website cameo: RESOLUTE 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 ribbon with track option

Fastrack RTLR rectangular

Scale name

Accuracy

Scale pitch

Thermal expansion

coefficient at 20°C

Max length of scale

Encoder systems

RTLA with optional FASTRACK

±5 µm/m

30 µm

10.1 ±0.2 µm/m/°C

21 m

RESOLUTE with RTLA, RESOLUTE UHV with RTLA

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 systems

 

RELA

±1 µm for up to 1 m, then ±1 µm/m

 

30 µm

0.75 ±0.35 µm/m/°C

1.5 m

 

RESOLUTE with RELA, RESOLUTE UHV with RELA

Stainless steel spar

RELM Invar scale

Scale name

Accuracy

Scale pitch

Thermal expansion

coefficient at 20°C

Max length of scale

Encoder systems

RSLA

±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

30 µm

10.1 ±0.2 µm/m/°C

5 m

RESOLUTE with RSLA, RESOLUTE UHV with RSLA

Stainless steel ring

RESR 3 rings

Scale name

Graduation accuracy (depending on ring diameter)

Scale pitch

Thermal expansion

coefficient

Ring diameter

Encoder systems

 

RESA

±3.97 to ±0.38 arc seconds

30 µm

16 µm/m/°C

 

52 to 550 mm

RESOLUTE with RESA,

RESOLUTE UHV with RESA,

RESOLUTE ETR with RESA

 

Ultra-high accuracy stainless steel ring 

REXM rings

Scale name

Installed accuracy

(depending on ring diameter)

Scale pitch

Thermal expansion

coefficient

Ring diameter

Encoder systems

 

REXA

(≥100 mm diameter)

±1 arc second
(75 mm diameter)

±1.5 arc seconds
(≤57 mm diameter)

±2 arc seconds

 

30 µm

16 µm/m/°C

52 to 417 mm

RESOLUTE with REXA,

RESOLUTE UHV with REXA,

RESOLUTE ETR with REXA