DRD01_03
21Pages

DATA SHEET DRD01_03 Issue 03, 21st June 2024 Artos™ Rotary and Linear Absolute Magnetic Encoder System TRUE ABSOLUTE SYSTEM ArtosTM is an absolute magnetic encoder system designed for motion control applications as a feedback element for angle and velocity control loops. A highly reliable measurement principle and processing provide low position latency, high resolution and high angular velocity. The robust design protects the readhead and magnetic ring from liquid ingress and high temperatures, so they remain undamaged even in extremely contaminated and hot environments. COMPACT ROBUST DESIGN HIGH SPEED AND RESOLUTION True absolute system SSI and BiSS communication protocols High accuracy and resolution Suitable for highly dynamic control loops Compatible with solid rings and partial arc scales Robust design and great EMC compatibility Wide installation tolerances MACHINE TOOL ASSEMBLY LINES INDUSTRIAL AUTOMATION

General information ArtosTM provides a true-absolute position information immediately after power-on via the selected communication protocol. The encoder system is extremely reliable due to the large installation tolerances (axial/radial/tangential offsets) and the robust IP67 design of the ring and readhead. The measuring principle is based on a magnetic ring/scale magnetised with the incremental and absolute track with a pseudorandom binary sequence (PRBS) read by RLS proprietary sensor technology. Once installed, the encoder system does not need to be calibrated. To ensure the...

Storage and handling Storage temperature Operating temperature Readhead is ESD sensitive - handle with care. Do not touch electronic circuit, wires or sensor area without proper ESD protection or outside of ESD controlled environment. This encoder system is a high performance measuring instrument and should be handled with the same care as any other precision instrument. The use of industrial tools during installation or contact with strong magnets, such as a magnetic base, is not recommended as there is a risk that parts of the system will be damaged and may not function to specifications...

Dimensions drawing DATA SHEET DRD01_03 Dimensions and installation drawings Dimensions and tolerances are in mm. Dimensions without tolerance values are in accordance with ISO 2768-m. Ø5 2.5 14 M3 THRU Dimensions drawing Dimensionsdrawing drawing Dimensions A (5 : 1) 3D models are available at RLS website. A (5A: (5 1) : 1) Installation surfaces General tolerances for linear dimensions according to ISO 2768-m Tolerance class Further information on compatible rings and scales can be found in SARD01 and ASD01, available at RLS Media center. Installation surfaces Installation Insta

Installation instructions Installation instructions with rings or magnetic scale for partial arc applications The readhead can be installed in 3 different ways - from the left, right or top, as shown in the drawings below. Carefully plan the orientation of the readhead and the ring or magnetic scale. The engraving on the ring and the print on the scale can be used to determine the orientation. We recommend the use of M3 fasteners with washers. For more information, please refer to the Table of recommended fastener tightening torques. After mounting the ring or magnetic scale with the...

Technical specifications System specifications Type of absolute measurement Pseudorandom binary sequence (PRBS) absolute code; RLS proprietary sensor technology Reading type <3.5 µm at nominal ride height SAR057 = 25 arcsec SAR081 = 18 arcsec SAR114 = 13 arcsec SAR162 = 9 arcsec SAR229 = 6 arcsec SAR325 = 4 arcsec SAR478 = 3 arcsec Unidirectional repeatability Rings: up to 23 bits binary resolution (depends on the ring size) Magnetic scales: up to ~0.122 μm See Table of available resolutions. Sensor and processing latency Internal loop refresh rate Maximum speed during power up Electrical...

Cable Cable type 8 core, PUR high flexible cable, braided shield, pairs not twisted Outer diameter White and brown wires 0.14 mm2, 26 AWG, 0.14 Ω/m Other wires 0.08 mm2, 28 AWG, 0.23 Ω/m Cable: Dynamic 50 min. mm Bending radius Cable bending radius 20 million cycles (expected value) at 50 mm bend radius Maximum cable length Flexible application Cable: min. Bending radius Cable bending radius Fixed laying application Continuously flexible application Fixed laying Continuously flexible Min. R35 Min. R10 Min. R35 Min. R10 Flexible application The cable requires adequate strain relief to ensure...

Electrical connections Shield connection The following figure shows the recommended shield termination in order to ensure electromagnetic compatibility. Customer electronics Encoder system 5 to 30 V Serial communication signals GND Outer shield Max cable length = 15 m The encoder housing is galvanically connected to the connector housing. To achieve EMC compliance, the encoder system must be correctly integrated. In particular, attention to shielding arrangements is essential. Serial communication Reserved Shield Wire colour (Flying Leads) DATA+ / SLO+ Bare wire 9-way D-type connector (male...

Status indicator LED Once the ring or magnetic scale has been installed, the readhead can be easily mounted on the machine using the LED setup indicator. The LED indicator shows the internal status of the encoder and is used to facilitate the installation and diagnosis of the encoder system. According to the table Detailed status description, certain errors are latched, resulting in LED indicating error status persistently. To clear latched error statuses, communication with readhead or readhead power cycle is required. Slow flashing of LED indicates that the encoder is receiving power, but...

Troubleshooting If the readhead reports an error during operation due to incorrect decoding of the absolute position on the magnetic ring/scale, this indicates a serious problem. Serious problems include incorrect installation or a damaged magnetic pattern on the ring or scale. To determine the cause of the problem, please proceed as follows: ⦁ Make sure that the part number on the readhead and the ring or scale match the required combination. The valid combination of ring and readhead can be verified with the first 6 letters of the part number. Verify that the installation matches the...