PWM to Voltage 0-100% to-10V Converter Module

PWM to Voltage 0-100% to 0-10V Converter Module is a vital interface component, bridging the gap between digital control systems and analog devices. Many industrial and motor control systems, such as PLCs and VFDs (Variable Frequency Drives), rely on a standard 0-10V analog voltage signal for speed or intensity regulation. This module efficiently takes a Pulse Width Modulation (PWM) signal, typically from a microcontroller like Arduino or an industrial controller, and accurately transforms its duty cycle (0% to 100%) into a proportional 0V to 10V DC voltage output. Engineers use this module to leverage the flexibility of digital control while maintaining compatibility with robust, industry-standard analog equipment, ensuring precise and reliable speed control for motors, dimmers for high-power lighting, and flow control systems.

Key Features:

• High Conversion Accuracy: Precisely converts the PWM duty cycle into a linear 0V to 10V analog output voltage.
• Wide Input Frequency Range: Supports a broad range of PWM input frequencies, typically from 1kHz to 3kHz, making it compatible with most microcontrollers and industrial sources.
• Industry Standard Output: Provides a stable 0-10V DC output, which is the standard signal for controlling variable frequency drives (VFDs) and other industrial equipment.
• Built-in Filtering: Integrates effective filtering to smooth the PWM signal, ensuring a clean and steady DC output voltage.
• Calibration Function: Includes potentiometers or jumpers for fine-tuning the full-scale (10V) and zero-scale (0V) output, ensuring perfect calibration for specific applications.
• Opto-Isolation: Some versions feature opto-isolation on the input, protecting the sensitive microcontroller from noise or voltage spikes from the industrial system.

Technical Specifications:

• Input Signal Type: PWM (Pulse Width Modulation) Signal
• PWM Input Level: Typically 3.3V to 12V or 5V to 24V (Specific range depends on the model variant)
• PWM Input Frequency: 1 kHz to 3 kHz (Adjustable range)
• Output Signal Type: DC Analog Voltage
• Output Voltage Range: 0 V to 10 V
• Conversion Linearity: $\pm$ 0.1 V (Typical)
• Supply Voltage: DC 12V to 30V (Required to generate the 10V output)

Mechanical Specifications:

• Mounting: Screw holes for panel or enclosure mounting.
• Connectors: Screw terminals for secure and robust wire connections for industrial environments.
• Adjustments: Onboard potentiometers for fine-tuning output voltage ($V_{\text{OUT}}$).

Dimensions:

• Board Length: ~45 mm
• Board Width: ~35 mm
• Board Height: ~15 mm

Pinout and Wiring:

• VCC: Connect the module’s positive power supply (DC 12V-30V).
• GND: Connect to the power supply ground and the control signal ground.
• PWM: Input terminal for the PWM signal from your microcontroller (e.g., Arduino PWM pin).
• VOUT: Output terminal for the 0-10V DC analog voltage signal.
• GND (Output): Connect to the ground reference of the device being controlled (e.g., the VFD’s analog input ground).
• Wiring Note: You must supply a voltage greater than 10V to VCC to ensure the module can accurately output the full 10V range. Connect the VOUT and Output GND pins directly to the analog speed/signal inputs of the target device (like a VFD).

Datasheet Reference:

• Download Datasheet (Generic Reference)

Commonly Used in:

• Industrial Automation: Interface microcontrollers or single-board computers with standard industrial control loops.
• CNC/Machine Control: Control spindle motor speeds using the industry-standard 0-10V interface.
• Smart Lighting Systems: Drive professional-grade dimmable LED drivers that require a 0-10V control signal.

Applications:

• Motor Speed Control: Command the speed of AC or DC motors through VFDs or motor controllers that accept 0-10V input.
• Valve and Damper Control: Translate a digital signal into a proportional analog signal for precise positioning of flow control mechanisms.
• Proportional Control: Use PWM to achieve highly adjustable control in HVAC systems and laboratory equipment.

Equivalent Models:

• Dedicated DAC Chips (e.g., MCP4725): Offer I2C digital-to-analog conversion, a software-based approach, but often require external circuits to boost the output to 10V.
• PLC Analog Output Modules: Integrated modules within a Programmable Logic Controller (PLC) chassis for industrial use.

Package Includes:

• 1 x PWM to Voltage 0-100% to 0-10V Converter Module