Resolutely rugged
Renishaw is introducing Resolute, a true absolute, fine pitch optical encoder system with excellent dirt immunity.
It is the world’s first absolute encoder capable of 27-bit resolution at 36,000 rev/min, says the company. It has a resolution of just 1 nanometre at up to 100 m/s for both linear and angle encoding applications.
The new system reads a single-track optical scale and offers further benefits to machine designers by acquiring absolute position immediately upon switch-on, without the need for battery back-up. This eliminates the need for reference returns.
A combination of ruggedness, high speed and resolution, mean that the product is attracting interest from manufacturers of high-performance lathes as well as machines with slower-moving axes requiring precision and effective motion control.
The Resolute absolute encoder uses sophisticated new optics to read the fine pitch 30µm scale with low noise levels (jitter <10 nm RMS) for outstanding positional stability; while the enhanced detection method intrinsically provides a very low sub-divisional error (SDE) of ±40nm. The result is better surface finish of machined parts from CNC machine tools, better scanning and velocity control, and rock-solid servo stiffness on linear motors or rotary direct-drives when holding position.
The product is backed by a responsive global sales and support network; and satisfies the highest environmental standards, with both WEEE and RoHS compliance.
