24V/36V 350W CT motor controller with LCD3 display

Reliable KT (Kunteng) 3-phase BLDC controller with LCD3 display for 24 V and 36 V systems up to 350 W. Offers 3/5/9 levels of assistance, PAS (Pedal Assist) support, speed limiting and a comprehensive display of driving data.

Main functions

• 3 / 5 / 9 speed/assist modes – precise power dosing for all conditions.
• PAS support – smooth, natural pedalling.
• LCD3 display – speed, mileage, battery level, error codes, settings.
• BLDC 3-phase motors – with HALL sensors (typical) or sensorless*.
• Protection – low voltage, overcurrent, short circuit, overheating**.
• Cruise/driving support and changing driving modes via LCD3 menu***.

* Sensorless depends on the specific version of the CT.
** Exact limits may vary by batch/model.
*** If enabled programmatically and wired.

Compatibility

• Voltage: 24 V / 36 V (Li-ion, LiFePO₄, SLA)
• Power: up to 350 W (transient peaks depending on the system)
• Motor: brushless BLDC, 3-phase (with HALL, usually 3×)
• Accelerators: thumb, half or full (0-5 V)
• Brake cut-off: supported (if wiring for sensors)

Specifications

• Control: KT algorithm, PWM/FOC* (by version)
• Modes: 3/5/9 PAS, manual accelerator, speed limiter
• Display: LCD3 with menu (configurable with P/C parameters)
• Environment: -10…+45 °C (-10…+45 °C), to be installed in a ventilated area
• Connectors: standard KT plugs (LCD3, HALL, PAS, brake, accelerator)

* Some CT controllers use sine/FOC; the specific type is specified by batch.

Installation and use

• Observe polarity (+/-) and phase/HALL pairing; do not use thin wires for power supply.
• Perform the first start-up with the wheel up – check the direction, PAS operation, error codes.
• Set the LCD3 P/C parameters: wheel diameter, number of magnets, limiter, HELP levels.
• A fuse in the battery circuit is recommended (based on system current).

FAQ

Will it fit my 250/350 W hub motor?
Yes, if it’s a 3-phase BLDC motor with KT-compatible HALL sensors.

Can I use the accelerator only, without PAS?
Yes – the controller allows you to choose PAS and/or accelerator.

Does LCD3 allow to change the speed limit?
Yes, it is possible to set the limiter in the C parameter menu (according to local regulations).

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