Types of Vibratory Bowl Controllers

1. Variable Voltage (Variac) Controller

This is the most basic and economical type.

• Working Principle: Uses a knob to adjust the output voltage to the electromagnet, thereby varying the amplitude of vibration.
• Characteristics:
  • Pros: Simple, low cost, easy to use.
  • Cons: Only controls amplitude, not frequency; offers limited control over feed stability.
  • Appearance: Typically features a single large knob.

2. Half-Wave / Full-Wave Controllers

These are sub-types of variable voltage controllers, distinguished by their power output mode.

• Half-Wave: Uses only one half of the AC cycle. Vibration frequency equals line frequency. Gentler, suitable for light loads.
• Full-Wave: Uses the full AC cycle. Vibration frequency is double the line frequency. More powerful and provides smoother feeding. This is the most common mainstream type.

3. Digital / NC Controller

A more advanced type with enhanced functionality.

• Working Principle: Uses a microprocessor to precisely control the output.
• Characteristics:
  • Pros:
    • Independent Control: Allows for independent adjustment of both amplitude and frequency.
    • Soft Start: Ramps up voltage gradually to prevent part scattering.
    • Extra Features: May include external control interfaces, fault diagnostics, etc.
  • Appearance: Often has a digital display and multiple buttons.

4. Smart / Programmable Controller

The most advanced type, integrating sensors and logic control.

• Working Principle: Based on a PLC or embedded system, it can automatically start/stop and adjust the bowl based on external signals.
• Characteristics:
  • Pros:
    • Automation: Can synchronize with the production line for “stop when full, start when empty” operation.
    • Energy Saving & Noise Reduction: Reduces idle running, saving energy and reducing wear/noise.
    • Parameter Storage: Can save multiple recipes for easy product changeover.
  • Aplicație: Ideal for highly automated production lines.