ERO 2000: high-accuracy miniature angle encoder

A very compact, incremental encoder for measuring angles to a high degree of precision has been introduced by Heidenhain, which says that the unit has 10 times higher resolution and reproducibility than competitive products due to its superior signal quality, low noise and high interpolation rates.

Designated ERO 2000, the angle encoder was originally designed for use with galvanometer motors used, for example, to move mirrors and provide positional feedback in laser applications involving beam steering, microscopy or marking. Other uses are to be found in small measuring arms, for positioning piezoelectric motors, and in micro systems such as goniometers for determining the angle between the faces of a crystal or a blade edge.

The encoder does not have an integral bearing, resulting in low start-up torque, absence of heat generation from friction, direct coupling of rotor and stator to the host equipment, greater reliability and minimal maintenance. The comparatively large mounting tolerances and the possibility of adjusting both the incremental and the reference-mark signals make assembly easy. A wizard in the software guides the user through the required steps.

The hub is fixed to the low-inertia circular scale, making the latter easy to adjust, whether its specification is 360 degrees / 2500 line count / 18.6mm diameter, or a 45-degree segment. Customised and application-specific versions are possible, in particular with regard to the design of the hub and scale assembly.

The 5V DC scanning head generates a 1Vpp sinusoidal voltage signal and operates at up to 14,000 rpm. Excellent thermal stability is claimed between the extremes of operating temperature, which are -10 and +70degC.

ERO 2000 is the first of what will be a product family by the end of 2016. The range will comprise models with line counts from 1600 to 23,000 and scanning heads with a TTL interface.

For further information about the ERO 2000 please go to www.heidenhaingb.com.

Heidenhain (GB) Ltd

200 London Road
BURGESS HILL
RH15 9RD
UNITED KINGDOM

+44 (0)1444 247711

sales@heidenhain.co.uk

www.heidenhain.co.uk

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