ATOM DX™ encoder series
The ATOM DX encoder series is Renishaw's smallest incremental optical encoder with digital output direct from the readhead, providing positional feedback, onboard interpolation, and filtering optics all in a miniature package.
ATOM DX builds on the market proven optical system of the ATOM™ encoder platform and integrates Renishaw's high-performance interpolation technology, reducing system size and removing the need for additional adaptors and interfaces. ATOM DX is suitable for the most space constrained applications where performance cannot be compromised.
Constructed with Renishaw's integrated set-up LED, for an intuitive and simple installation process based on the well established auto-calibration routine, ATOM DX is ready to install straight from the box. ATOM DX is compatible with the optional Advanced Diagnostic Tool ADTi-100 and ADT View software: they provide in-depth advanced diagnostic information to aid optimisation of encoder installation and in-field fault finding to satisfy the most demanding motion control applications.
ATOM DX readheads can be used with a wide range of linear, partial arc and rotary scales to meet most application requirements, and comes in two formats: cabled and top exit variants with either 20 µm or 40 µm scale options.
Key features
Performance in a miniature head
ATOM DX fits into the smallest applications with heights as low as 7.85 mm. The top exit variant offers all the benefits and features of the cabled ATOM DX encoder, but in an even smaller package. The top exit variant is a component encoder with the cable assembly integrated separately to the readhead, making the ATOM DX top exit suitable for the smallest spaces.
Performance in speed
ATOM DX encoders offer maximum speeds up to 20 m/s and a range of high-speed interpolation options.
Performance in velocity control
ATOM DX incorporates Renishaw's latest interpolation technology, with updated signal processing algorithms to reduce Sub-Divisional Error (SDE). This helps to reduce velocity ripple and improve closed loop feedback in motion control systems.
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.
- Partial arc scales are used for measuring a partial arc of rotation by wrapping them around drums, shafts or arcs.
Glass spar
| Scale name | Accuracy | Scale pitch | Coefficient of thermal expansion | Supplied length | Readhead compatibility |
RCLC | ±3 µm | 20 µm/40 µm | ~8 µm/m/°C | Up to 130 mm | ATOM DX |
Stainless steel tape
Scale name | Accuracy | Scale pitch | Coefficient of thermal expansion | Supplied length | Readhead compatibility |
RTLF  | 20 μm: ±5 μm/m 40 µm (high accuracy): ±5 µm/m | 20 µm/40 µm | ~10.1 ±0.2 µm/m/°C | Up to 10 m (>10 m on request) |
Narrow stainless steel partial arc tape
Scale name | Accuracy | Scale pitch | Coefficient of thermal expansion | Supplied length | Readhead compatibility |
RKLF-S  | ±15 μm/m | 40 µm | Matched to substrate material when scale ends are fixed with end clamps | Up to 20 m (>20 m on request) | ATOM DX |
Glass disc
| Scale name | Graduation accuracy (depending on ring diameter) | Scale pitch | Coefficient of thermal expansion | Disc diameter | Readhead compatibility |
RCDM  | ±0.5 µm | 20 µm/40 µm | ~8 µm/m/°C | 17 to 108 mm |