24V / 36V 250w Three Phase Motor Controller

Compact BLDC (3-phase) controller for 24 V and 36 V systems up to 250 W. Ensures a smooth start, efficient operation and easy installation with or without HALL sensors (sensorless).

Main functions

• Self-learning – automatically detects the phases and direction of rotation of the motor.
• 3 speed modes – Low / Mid / High (via a switch).
• PAS support – Pedal assist system with adjustable sensitivity.
• Works with or without HALL – compatible with most 3-phase BLDC motors.
• Soft-start – less shock to the gear.
• Protection – low voltage, overcurrent, short circuit, overheating*.

* Exact thresholds for guards may vary by batch.

Compatibility

• Voltage: 24 V or 36 V for Li-ion / LiFePO₄ / SLA systems
• Power: up to 250 W for BLDC motors
• Accelerators: thumb/half/full grip(0-5 V)
• Sensors: HALL (3×) – optional

Specifications

• Motor type: brushless BLDC, 3 phase
• Rated power: 250 W (max transient peaks – system dependent)
• Modes: 3 speeds + PAS
• Control inputs: accelerator, PAS, speed switch, brake cut-off*
• Environment: -10…+45 °C (typical), IP for indoor installation

* If brake sensor cables are included.

Installation

• Observe polarity (+/-) and phase alignment; connect the self-learn leads only during setup.
• Use cables of the correct cross-section; ensure ventilation.
• A fuse in the battery circuit is recommended (under current).

FAQ

Will it work without HALL sensors?
Yes, the controller supports sensorless mode (use self-learn).

Is it suitable for an e-bike with PAS?
Yes, there is a PAS input; sensitivity depends on the sensor drive and setting.

Can I change the speed limit?
It is possible via 3 speed wires/switch; the exact limit depends on your switching scheme.

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