Hall Effect kit encoder MKI

Direct position information: Instant angular value – no homing required with PWM

The MKI is a Hall-based kit encoder consisting of an encoder unit, a mounting ring, and a matching plug-on magnet. Despite its very small diameter of 14.8 mm and minimal depth, it provides fine resolutions up to 8192 pulses per revolution (PPR). Signal transmission is via A, B, and Z channels (TTL, 5 V). Additionally, PWM (12-bit) can be output simultaneously, enabling the encoder to function as both incremental and absolute.

Special feature – incremental + PWM in addition
The quadrature signals A/B/Z provide dynamic, high-resolution motion feedback including direction and reference pulse. In addition, PWM (12-bit) outputs an absolute single-turn angle. This combination offers several advantages:

• Instant angle value on power-up, without the need for counting — ideal for homing, plausibility, or safety checks.
• Easy evaluation on microcontrollers using capture/timer inputs, without the need for high-speed counters.
• Robust angle transmission over longer cable lengths, since PWM is not sensitive to amplitude variations compared to proportional voltage output signals.
• Enables position indication/control (PWM) and motion/speed feedback (A/B/Z) within one compact device.

Dynamic performance
Mechanically, high rotational speeds are possible. In practice, the maximum usable speed depends on the output frequency in combination with the selected pulse count—i.e. the higher the resolution, the lower the permissible rotational speed.

Options

• Resolution (PPR): 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192
• Outputs: A+B+Z (TTL) or A+B+Z (TTL) + PWM (12-bit)
• Shaft diameters: Ø3 / 3.175 / 4 / 5 / 6 / 6.35 mm