DC 6-60V 30A PWM Motor Speed Controller – Encoder Knob

DC 6-60V 30A PWM Adjustable Motor Speed Controller with Digital Encoder Knob

Take precise control of your DC brushed motors with this compact, feature-packed PWM Motor Speed Controller. Designed for makers, engineers, and DIY enthusiasts, this module delivers smooth, accurate speed regulation from 0–100% across a wide voltage range of 6V to 60V and up to 30A output current. The high-precision digital encoder knob gives you tactile, reliable adjustment — built to last through thousands of rotations.

Whether you're building an automated conveyor, controlling a fan array, managing pump speeds, or prototyping a robotics project, this controller provides the flexibility and programmability professionals demand in a compact embedded form factor.

Key Features

• Wide Voltage Range: Supports DC 6V–60V input — compatible with 12V, 24V, 36V, 48V, and 60V motor systems
• High Current Capacity: Up to 30A output current under load (current regulation mode within 20A)
• Adjustable PWM Frequency: 1–100 KHz settable frequency (default: 15 KHz) for optimal motor compatibility
• Encoder Knob Control: 360° digital encoder for smooth, precise speed adjustment — short press to start/stop, long press to enter settings
• Soft Start & Soft Stop: Configurable ramp-up/ramp-down time from 0–10 seconds for gentle motor transitions
• Speed Limits: Set upper (0–100%) and lower (0–80%) speed limits to protect your motor and application
• Acceleration/Deceleration Steps: Choose from 1%, 2%, 5%, 10%, 15%, 20%, or 25% per encoder rotation increment
• Digital Display: Clear 0–100% percentage readout on built-in display
• Power-Off Memory: Settings are saved automatically when power is removed
• Embedded Panel Mount: Designed for panel cutout installation (92mm × 56mm opening)
• CE Certified: Meets EU Low Voltage Directive standards

Technical Specifications

Encoder Knob Operation Guide

• Short Press: Start / Stop motor
• Long Press (3 sec): Enter settings menu
• Rotate Clockwise: Increase value
• Rotate Counter-Clockwise: Decrease value
• In Settings – Short Press: Cycle through Functions 1–6
• In Settings – Long Press (3 sec): Save and exit

Programmable Settings

• Function 1 – Soft Start Time: 0–10 seconds (default: 1 sec)
• Function 2 – Soft Stop Time: 0–10 seconds (default: 1 sec)
• Function 3 – Speed Lower Limit: 0–80% (default: 0%)
• Function 4 – Speed Upper Limit: 0–100% (default: 100%)
• Function 5 – Accel/Decel Step: 1%, 2%, 5%, 10%, 15%, 20%, or 25% per rotation
• Function 6 – PWM Frequency: 1–100 KHz (default: 15 KHz)

Important Wiring Notes

Always observe correct positive/negative polarity when wiring. The input voltage must match the rated voltage of your DC motor (e.g. use 12V supply for a 12V motor, 36V supply for a 36V motor). This controller operates on DC voltage only — do NOT connect to 220V AC mains power.

What's in the Box

• 1× DC 6-60V 30A PWM Adjustable Motor Speed Controller Module

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For general guidance on electrical safety standards and low-voltage device compliance, visit the U.S. Consumer Product Safety Commission (CPSC) or review OSHA Electrical Safety guidelines.

Frequently Asked Questions

Q: What types of motors is this PWM speed controller compatible with?

A: This DC PWM motor speed controller is designed specifically for brushed DC motors. It supports motors rated within the DC 6V–60V range. Always ensure your power supply voltage matches your motor's rated voltage for safe and optimal operation.

Q: Can I use this controller for a 12V or 24V motor system?

A: Yes. The controller supports any DC voltage between 6V and 60V, making it compatible with 12V, 24V, 36V, 48V, and 60V brushed DC motor setups. Simply match your input supply voltage to your motor's rated voltage.

Q: Does this PWM controller save my custom settings after power loss?

A: Yes. This module features power-off memory storage. All programmed settings — including soft start/stop times, speed limits, acceleration steps, and PWM frequency — are automatically saved and retained even after the power is disconnected.

Q: How do I mount this controller in a panel or enclosure?

A: This module is designed for embedded panel-mount installation. Cut an opening of 92mm × 56mm in your panel or enclosure and insert the module from the front. The module body measures 96mm × 61mm × 34mm overall.

Q: What PWM frequency range does this controller support, and why does it matter?

A: The adjustable PWM frequency range is 1 KHz to 100 KHz (default: 15 KHz). A higher frequency reduces audible motor noise but may generate more heat in some motor types, while a lower frequency is better suited for high-current or high-inductance motors. The wide range lets you fine-tune performance for your specific motor.