ZeroErr eCoder35H Magnetic Absolute Encoder, RS-485, 35 mm Through-Hole, 17–21 Bit Options

OverviewThe ZeroErr eCoder35H is a magnetic absolute encoder with an axial-reading design, RS-485 interface, and a 35 mm through-hole. Select a single-turn or multiple-turn RS-485 version with 17-bit, 19-bit, 20-bit, or 21-bit resolution. Multiple-turn selections offer a battery option: not included or included (two pieces per pack).Features 35 mm through-hole for routing mechanical structures, cables, and air lines. RS-485 protocol compatible with Tamagawa absolute encoders. 8-pin connection and axial reading. Real-time assembly-error identification and compensation. Assembly tolerance up to 0.1 mm. Programmable zero position stored in internal EEPROM. Precision positioning reference for fast, accurate installation. Described for use in dust, heavy oil contamination, high- and low-temperature conditions, and complex electromagnetic environments, with reliable operation in harsh environments. Multiple-Turn RS-485 OptionDescribed as a non-contact, multi-turn absolute type.21-Bit Multiple-Turn Option The 21-bit multiple-turn RS-485 option supports up to 21-bit resolution and 216 counting revolutions. Programmable, storable point-by-point position compensation. Repeatability: ±2.5 arcseconds. Specifications Parameter Value Model eCoder35H Maximum absolute tolerance <0.02° Repeatability ±2.5 arcseconds Reading type Axial reading Resolution 17-bit to 21-bit, with a 16-bit multiturn counter option Maximum speed 6,000 RPM (eCoder35, eCoder45, eCoder65, eCoder35H); 12,000 RPM (eCoder11, eCoder18, eCoder20) Hysteresis Less than one unit of resolution Supply voltage 4.7–5.4 V Current consumption 105–125 mA (eCoder11, eCoder18, eCoder20); 70–90 mA (eCoder35, eCoder45, eCoder65); 115–130 mA (eCoder35H) Connector 8-pin connection Battery standard voltage 3.6 V Battery warning voltage <3.05 V Battery operating current 4 μA Storage temperature -40 to +105 °C Operating temperature -40 to +105 °C External magnetic field ±20 mT eCoder35H Physical Specifications Parameter eCoder35H Magnetic ring inner diameter 35 mm Magnetic ring outer diameter 55 mm Magnetic ring weight 19.0 g Magnetic ring thickness 2.5 mm Readhead inner diameter 41 mm Readhead outer diameter 65 mm Readhead weight 4.7 g Readhead average thickness 5.4 mm Readhead maximum thickness 5.7 mm Readhead arc length 200° Maximum resolution 21 bits Installation Drawing Labels Drawing feature Label Outside diameters Ø59.2, Ø56, Ø55, Ø42, Ø41, Ø38.5, Ø35 Hole patterns 8 × Ø2.1; 4 × Ø2.1; 5 × Ø2.1 Linear dimensions 32.5, 8.25, 6.5, 6.25, 2.3, 1.5 Angular dimensions 45°, 200°, 55°, 38°, 10°, 48.75°, 6.25° Connector layout Board-mounted multi-pin connector at the perimeter of the circular assembly ApplicationsSuitable for humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots.Downloads Downloads & Resources zeroerr eCoder35 eCoder35H — 3D Model (STEP) ZeroErr eCoder35 Drawing eCoder35H instalation — Installation Drawing (PDF) ZeroErr ZeroErr eCoder Ver2.4 1 — Manual (PDF) Visual Details Product Views The product is identified as an eCoder35H Absolute Encoder. Features and Design The encoder has a 35 mm large through-hole. The encoder has an average thickness of 5.4 mm. The 21-bit multiple-turn absolute encoder supports up to 21-bit resolution and 2¹⁶ counting revolutions. The 21-bit multiple-turn absolute encoder has programmable, storable point-by-point position compensation. The encoder supports assembly tolerance up to 0.1 mm. The encoder is described as applicable in dust, heavy oil contamination, high and low temperatures, and complex electromagnetic environments. Application Examples The large through-hole has a diameter of up to 35 mm. The through-hole allows passage of mechanical structures, cables, and air lines. Interfaces and Connections The encoder supports the RS-485 interface protocol. The encoder uses a standard RS-485 protocol compatible with Tamagawa absolute encoders. Dimensions and Construction The encoder drawing labels an outside diameter of Ø59.2. The encoder drawing labels a Ø56 diameter.