The Brushless Motor Driver with Communication (Sensorless Control) is a high-performance controller designed for BLDC motors requiring smooth start-up, stable speed control, and reliable protection. Using advanced high-voltage power modules and digital speed regulation technology, this controller delivers excellent dynamic response, precise speed management, and long-term operational stability.
Its sensorless architecture eliminates the need for Hall sensors, reducing system cost and wiring complexity, while still ensuring accurate position detection and dependable start-up behavior.

Equipped with RS485 communication, multi-stage speed control inputs, and external switch interfaces, this driver can be seamlessly integrated into automation equipment, industrial control systems, and custom OEM applications.

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Key Features

✔ High-Efficiency Sensorless Control

Uses advanced high-voltage power module technology for improved performance and efficiency without the need for Hall sensors.

✔ Multi-Mode Speed Control

Supports analog closed-loop regulation, multi-stage speed inputs (X3/X4), pulse control (IN), and RS485 communication control.

✔ Digital Display & Easy Operation

Integrated digital display shows speed and alarm information; intuitive buttons enable fast parameter settings.

✔ Adjustable Acceleration Curve

Acceleration time adjustable from 0.1–1s, with factory default optimized for smooth and safe operation.

✔ Comprehensive Protection

Built-in protection includes over-current, over-voltage, over-temperature, direction error, short-circuit, and abnormal system detection.

✔ Flexible External Control Options

Supports:

• Panel control
• External switch control
• RS485 communication

✔ Safe & Reliable Design

Protection grade IP00, stable operation in industrial environments with ambient temperature −10°C ~ +10°C.

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Interface Definitions

RS485

• A+ / B−: Communication terminals
• Pitch: 2.54 mm × 2

CONTROL

• X1: Start/Stop control
• X2: Forward/Reverse control
• X3/X4: 4-stage speed control inputs
• X5: Reserved
• Ground (G)
• Pitch: 2.54 mm × 6

IN (Signal Input)

• IN: Pulse control
• VCC: Voltage control input
• G: Ground
• Pitch: 2.54 mm × 3

ALM / OUT

• Alarm output terminal (dry contact)
• Control output terminal
• Pitch: 2.54 mm × 2 / 3.81 mm × 2

INPUT (Power Input)

• L / N / PE — AC input lines
• Pitch: 5.08 mm × 3

MOTOR

• U / V / W: Motor output
• PE: Ground
• Pitch: 5.08 mm × 4

BREAKER

• PB− / PB+: Brake power terminals
• Pitch: 5.08 mm × 2

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Technical Parameters

Item	Specification
Control Mode	Sensorless BLDC control
Communication	RS485
Speed Control Inputs	X1–X5 multi-function terminals
Acceleration Time	Adjustable: 0.1s – 1s
Protection Functions	Over-current, over-voltage, over-temperature, short-circuit, direction anomaly, abnormal system
Display	Digital speed & fault code display
Power Input	AC (L/N/PE)
Motor Output	3-phase U/V/W
Operating Temperature	−10°C ~ +10°C
Humidity	≤80% RH, no condensation
Protection Grade	IP00
Applicable Motors	Brushless DC motors of various sizes (sensorless type)

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Fault Alarm Codes

Code	Fault Description	Solution
ERR1	Short-circuit anomaly	Check motor and wiring for short
ERR2	Holzer anomaly	Check motor connection/contact
ERR3	Current anomaly	Check if motor is locked or overloaded
ERR4	Voltage abnormality	Verify input voltage
ERR5	Direction error	Check signal wiring and logic
ERR6	Overheat protection	Check ventilation/cooling
ERR7	Abnormal system	Internal error — contact support

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Application

✔ Industrial Automation Equipment

Used in conveyors, textile machines, packaging machines, inspection equipment, material handling devices.

✔ Smart Manufacturing & Robotics

Ideal for AGVs, robotic arms, sorting systems, and motion-control platforms requiring stable BLDC control.

✔ HVAC & Fans

Suitable for sensorless BLDC fans, blowers, and cooling systems requiring adjustable speed control.

✔ Pumps & Fluid Equipment

Provides stable torque and precise speed regulation for BLDC water pumps and metering pumps.

✔ OEM Custom Machinery

Perfect for customized machinery requiring compact control, programmable communication, and reliable protection.

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Why Choose This Driver

• Eliminates Hall sensors → lower cost & higher reliability
• Supports multi-stage speed regulation and RS485 → flexible system integration
• Built-in digital display → easy commissioning and troubleshooting
• Industrial-grade protection → safe and durable