Overview
The Minarik SL32 motor speed controller is a compact, reliable speed regulator designed for shunt-wound DC motors in the fractional horsepower range. The SL32 is designed for 115VDC motors, with input voltage of 115V at 50/60Hz and a current rating of 2A. This model is discontinued by the manufacturer, making surplus units highly sought after for maintenance and retrofit applications where original equipment specifications must be matched.
Key Features
- 0–100% speed control: Offers control over motor speed in the range of 0–100.
- Compact form factor: Space-efficient design suitable for integration into existing control panels and machinery housings.
- Shunt-wound motor compatible: Purpose-designed for shunt-wound DC motor types.
- AC input conversion: Accepts standard 115V AC (50/60Hz) supply and converts to DC for motor armature control.
- Low current demand: 2A operating current limits heat generation and reduces cooling requirements.
Technical Specifications
- Motor voltage: 0–90 VDC (nominal 115VDC control)
- Input AC supply: 115V, 50/60Hz
- Output current rating: 2A continuous
- Motor application: Fractional horsepower shunt-wound DC
- Speed range: 0–100% adjustable
- Control method: Armature voltage regulation
- Mounting: Panel or DIN rail (verify mounting surface dimensions on receipt)
Typical Applications
The Minarik SL32 excels in equipment requiring variable-speed DC motor control:
- Material handling: Conveyor speed adjustment, hoisting equipment
- Machine tools: Lathe spindle speed, drill press control
- Automation equipment: Punch press motor control, packaging machinery
- HVAC systems: Fan motor speed regulation for comfort and energy efficiency
- Equipment retrofits: OEM replacement for legacy industrial equipment
- Small manufacturing: Custom machinery prototyping and low-volume production
Compatibility & Replacements
Compatible With
- Shunt-wound fractional horsepower DC motors (1/15 to 1/4 HP typical)
- 115V AC single-phase power supplies
- Permanent magnet DC motors (verify with system integrator)
- Legacy Minarik motor control systems and wiring harnesses
Replaces / Drop-In Replacement For
- Original Minarik SL32 model equipment
- Verify compatibility with your system integrator before ordering, as armature winding specifications vary between motor manufacturers.
Works With
- Standard 115V AC industrial electrical distribution systems
- Rheostat or potentiometer-based speed adjustment interfaces
- Simple on/off relay control logic
- Thermal overload protection circuits in existing motor starter assemblies
