Makerbase MKS AS5047P V1.0 - 14-bit Magnetic Encoder

Description

The MKS AS5047P V1.0 magnetic encoder module from Makerbase is designed for contactless measurement of motor shaft angular position and other rotating components. The board uses a 14-bit AS5047P magnetic sensor, providing 16,384 distinguishable positions over a full 360° revolution. The angular resolution is approximately 0.022°. The encoder is suitable for closed-loop control systems using BLDC, PMSM and stepper motors, including applications based on the Field-Oriented Control (FOC) algorithm. It provides rotor position feedback to a motor controller, supporting speed and position regulation.

Position measurement is performed by detecting changes in the magnetic field generated by a diametrically magnetized magnet attached to the rotating shaft. The AS5047P sensor determines the absolute angular position within a single revolution without requiring a mechanical connection to the shaft. The IC incorporates Dynamic Angle Error Compensation (DAEC) to reduce dynamic measurement errors caused by signal processing delays. The sensor manufacturer specifies operation at rotational speeds up to 28,000 rpm. Proper installation requires concentric alignment of the magnet with the sensor and an appropriate distance between the components.

The module provides a digital SPI interface and incremental ABI (A, B, I) outputs for integration with motor controllers and microcontrollers. The SPI interface enables 14-bit absolute angular position readings and access to the sensor's configuration registers. The ABI outputs generate quadrature A and B signals and an index pulse I, used to measure angular displacement and rotational speed. The incremental output resolution is programmable and can reach up to 4096 steps per revolution in binary mode. The AS5047P IC also supports UVW commutation signals and a PWM output, according to the IC manufacturer's documentation.

The MKS AS5047P V1.0 supports a 3.3 V or 5 V DC power supply. The PCB features two 6-pin signal connectors providing access to SPI communication lines and incremental ABI signals. The SPI connector provides GND, CS, MISO, SCK, MOSI and 5V pins. The second connector provides 5V, NC, A, B, I and GND signals. Pin labels are printed on the PCB to facilitate identification during installation. Before connecting the encoder, the supply configuration, controller logic levels and signal compatibility must be checked against the documentation of the motor control system.

The encoder PCB measures 42 x 34 mm and features four corner mounting holes with a diameter of 4 mm, along with additional elongated mounting slots for positioning the sensor relative to the motor axis. The design allows the encoder to be installed near the motor shaft while maintaining access to the connectors and mounting components. The kit includes a 6 x 2.5 mm radial magnet, a 30 cm 6-pin cable, brass threaded spacers and mounting screws. Applications include robotics, CNC drives, servo control systems and positioning mechanisms. The encoder measures angular position, while direct control of the motor windings requires an external motor controller.

Features

• Technical specifications
  • Model: MKS AS5047P V1.0
  • Manufacturer: Makerbase
  • Device type: magnetic rotary encoder
  • Sensor IC: AS5047P
  • Measurement technology: contactless magnetic field sensing
  • Angular position resolution: 14 bits
  • Positions per revolution: 16,384
  • Angular resolution: approximately 0.022°
  • Measurement range: 360°
  • Supply voltage: 3.3 V or 5 V DC
  • Maximum rotational speed of the AS5047P IC: 28,000 rpm
  • AS5047P IC operating temperature: -40°C to 125°C
  • Dynamic angle error compensation: DAEC
  • PCB dimensions: 42 x 34 mm
• Interfaces and signals
  • Digital SPI interface
  • Incremental ABI outputs (A, B, I/Index)
  • Absolute angular position readings via SPI
  • SPI reading resolution: 14 bits
  • Programmable ABI output resolution
  • ABI resolution in binary mode: up to 4096 steps per revolution
  • Sensor zero-position configuration support
  • UVW commutation signal support in the AS5047P IC
  • PWM output support in the AS5047P IC
  • 6-pin SPI connector: GND, CS, MISO, SCK, MOSI, 5V
  • 6-pin ABI connector: 5V, NC, A, B, I, GND
• Design and applications
  • Four corner mounting holes with a diameter of 4 mm
  • Additional elongated mounting slots
  • Pin labels printed on the PCB
  • Position measurement using a diametrically magnetized magnet
  • Shaft position measurement for BLDC, PMSM and stepper motors
  • Integration with closed-loop motor control systems
  • Suitable for FOC motor control systems
  • Applications in robotics, automation and positioning mechanisms
  • Compatibility with controllers supporting SPI or ABI interfaces

Kit Includes

• 1x Makerbase MKS AS5047P V1.0 magnetic encoder module
• 1x PH 2.0 6-pin connection cable, 30 cm
• 4x M3 x 5 + 3 mm hexagonal brass spacers
• 4x M3 x 6 mm Phillips countersunk screws
• 4x M3 x 12 mm hexagonal brass spacers
• 4x M3 x 6 mm black flat-head hex socket screws
• 1x radial magnet, 6 x 2.5 mm