The WEM20 IU magnetic encoder PCB is a compact, high-resolution single-turn encoder designed for motor feedback, BLDC motor commutation, and precision motion control. Using axial magnetic sensing technology, it delivers accurate position and speed feedback while maintaining a compact, bearing-free design that integrates easily into custom motor assemblies.
Designed for OEMs and machine builders, the WEM20 IU requires only a diametrically magnetized hub and a PCB holder to create a complete encoder system. As a result, it offers a simple, cost-effective solution for integrating high-performance encoder technology into compact electric motors and motion control applications.
The encoder simultaneously provides incremental ABI signals and UVW commutation signals through its 11 output pads. Consequently, it supports both closed-loop speed control and BLDC motor commutation without requiring separate feedback devices. It delivers incremental resolutions of up to 4,096 pulses per revolution (PPR) and supports up to 8 pole pairs for commutation, making it ideal for robotics, servo systems, and precision automation.
Built for demanding industrial environments, the WEM20 IU operates in temperatures from -40°C to +105°C while consuming very little power. In addition, its bearing-free construction, zero-latency signal processing, and 5 V supply voltage ensure reliable, maintenance-free operation in high-performance motion control systems.
Key Features
- Single-turn magnetic encoder PCB
- Axial magnetic sensing technology
- Simultaneous incremental ABI and UVW commutation outputs
- Incremental resolution up to 4,096 PPR
- Supports up to 8 pole pairs for BLDC commutation
- Compact, bearing-free design
- Quick and easy integration into custom motors
- Zero-latency signal output
- Low power consumption
- 5 VDC supply voltage
- Operating temperature: -40°C to +105°C
- RoHS compliant (EU Directive 2011/65/EU)
Technical Specifications
| Feature | Specification |
|---|---|
| Technology | Axial Magnetic |
| Encoder Type | Single-turn PCB Encoder |
| Incremental Interface | ABI |
| Resolution | Up to 4,096 PPR |
| Commutation Interface | UVW |
| Pole Pairs | Up to 8 |
| Supply Voltage | 5 VDC |
| Operating Temperature | -40°C to +105°C |
| Design | Bearing-free |
| Compliance | RoHS (2011/65/EU) |
Applications
The WEM20 IU is ideal for:
- BLDC motor commutation
- Motor feedback systems
- Servo motors
- Robotics
- Speed control
- Position control
- Industrial automation
- Precision motion control
- AGVs and autonomous robots
- Compact OEM motor designs
Compact Magnetic Feedback for High-Performance Motors
The WEM20 IU magnetic encoder PCB combines high-resolution position feedback, incremental and commutation outputs, and compact bearing-free construction in a single solution. Its fast response, simple integration, and reliable magnetic sensing make it an excellent choice for BLDC motors, robotics, servo systems, and advanced industrial automation.