• ZeroErr eCoder35H magnetic encoder with semicircular circuit board mounted over a circular magnetic ring.
  • ZeroErr eCoder35H magnetic encoder shown separated into a circular magnetic ring and semicircular circuit board.
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ZeroErr eCoder35H Magnetic Absolute Encoder, RS-485, 35 mm Through-Hole, 17–21 Bit Options

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

ZeroErr

$637.00 USD
$637.00 USD
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Version
Resolution
Multiturn Counting Battery
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Overview

The 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 Option

  • Described 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

Applications

Suitable for humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots.

Downloads

Downloads & Resources

Visual Details

Product Views

ZeroErr eCoder35H absolute encoder board, connector, and magnetic ring assembly
The product is identified as an eCoder35H Absolute Encoder.

Features and Design

eCoder35H encoder feature panel for 35 mm through-hole and compact thickness
The encoder has a 35 mm large through-hole. The encoder has an average thickness of 5.4 mm.
eCoder35H 21-bit multiple-turn absolute encoder feature panel
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.
eCoder35H assembly tolerance and EEPROM zero-position feature panel
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

eCoder35H 35 mm through-hole installation layout
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

eCoder35H RS-485 interface compatibility panel
The encoder supports the RS-485 interface protocol. The encoder uses a standard RS-485 protocol compatible with Tamagawa absolute encoders.

Dimensions and Construction

eCoder35H mechanical installation drawing with dimensions and connector layout
The encoder drawing labels an outside diameter of Ø59.2. The encoder drawing labels a Ø56 diameter.

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