Product Overview
The SL-1 Compact Frequency Converter is a cost-effective, space-saving speed control solution designed for small three-phase motors (0.1-3.7kW) in commercial and light industrial settings. Developed by SL, it features a ultra-compact design (70x120x100mm for 0.75kW models) and V/f control with slip compensation, ensuring stable speed regulation (±1% under full load) at an affordable price. With single-phase 220V input and three-phase output, it is ideal for retrofitting single-phase systems to run three-phase motors, widely used in commercial HVAC (fan coils, condensate pumps), food processing (packaging line conveyors), woodworking (table saw spindles), and residential water supply systems. Its DIN rail mounting and plug-and-play setup simplify installation, making it a top choice for small businesses and DIY projects.
Product Advantages
Space-Saving Compact Design
The 0.75kW model measures only 70mm (H) × 120mm (W) × 100mm (D), saving 50% space compared to traditional VFDs. It fits into standard electrical boxes, ideal for equipment with limited installation space (e.g., small HVAC units or under-counter food packaging machines).
DIN rail mounting with a snap-lock mechanism enables tool-free installation in just 5 minutes, reducing setup time and labor costs.
Reliable Protection & Safety
Equipped with basic protection functions: overcurrent (1.5× rated current), overheat (80°C), and phase loss detection, complying with IEC 60204-1 machine safety standards, preventing damage to the converter and connected motors.
Built-in 100W braking resistor for 0.75kW motors, enabling quick stops (≤2 seconds), critical for applications requiring emergency stops (e.g., woodworking table saws).
User-Friendly Operation & Energy Savings
A 4-digit LED display allows easy parameter setting (50+ adjustable parameters), with a quick-start guide reducing commissioning time to 10 minutes—no professional technical skills required.
Supports analog input (0-10V/4-20mA) for speed control and optional potentiometers for local adjustment; compatible with IE3 motors to reduce energy costs by 25% compared to standard IE1 motors.
Technical Specifications
Power Range: 0.1kW to 3.7kW, designed for small three-phase motors in commercial and light industrial applications (e.g., 0.75kW fan coils, 1.5kW packaging conveyors).
Control Mode: V/f control with slip compensation, ensuring speed precision of ±1% under full load, maintaining stable operation even when load changes.
Input/Output Voltage: Input is single-phase 180-240V AC (auto-detects voltage, no manual adjustment); output is three-phase to match small three-phase motors.
Dimensions & Mounting: Ultra-compact size (70x120x100mm for 0.75kW models); DIN rail mounting with snap-lock, tool-free installation.
Protection Functions: Overcurrent protection (1.5× rated current), overheat protection (80°C), phase loss detection; built-in 100W braking resistor (for 0.75kW models) for quick stops.
Application Scenarios: Commercial HVAC (fan coils, condensate pumps), food processing (stainless steel IP65 variants for washdown environments like bakeries/dairies), woodworking (table saws, routers with 0-3000 RPM variable speed), residential water supply (pumps with ±0.1 bar constant pressure via PID control).
Why Choose Us
Cost-Effective Solution: 30% more affordable than comparable compact VFDs, making it ideal for small businesses, DIY projects, and budget-conscious commercial applications (e.g., small retail store HVAC systems).
Global Voltage Compatibility: Auto-detects 180-240V single-phase input, suitable for international markets (e.g., 110V-240V regions), no need for regional variants.
Reliable Quality: 5-year warranty on main components, with a failure rate <0.05% in field tests; all converters undergo rigorous burn-in testing to ensure long-term reliability.
Plug-and-Play Setup: Pre-configured for common small motor types, with no complex parameter tuning needed for basic speed control—even non-technical users can install and operate it quickly.
FAQ
Q1: Can this converter be used to run a three-phase motor from a single-phase power supply?
A1: Yes. It is specifically designed for retrofitting single-phase systems: input is single-phase 220V, and output is three-phase, allowing you to power three-phase small motors (0.1-3.7kW) without upgrading the power supply.
Q2: Is there a waterproof variant for food processing environments (e.g., bakeries with washdowns)?
A2: Yes. We offer an IP65-rated stainless steel variant, which resists water and cleaning agents, making it suitable for washdown environments in bakeries, dairies, and other food processing facilities.
Q3: How do I adjust the motor speed using the converter?
A3: You can adjust speed in two ways: 1) Use the analog input (0-10V/4-20mA) to connect to a PLC or external controller for automatic speed control; 2) Install an optional potentiometer for manual local speed adjustment, ideal for small-scale operations like woodworking shops.
Q4: What is the warranty period for the SL-1 Compact Frequency Converter?
A4: We provide a 5-year warranty on main components (e.g., the control board and braking resistor). If any main component fails under normal use, we will repair or replace it free of charge.
Motor voltage, power and speed will be customized accrding to his requestment under the allowed circumstance of adoptable dimension.
Reduction Motor Max Allowable Torque .
Wiring diagram of motor
Stanclard length of lead wire: 300mm+ 10,model:UL1015 tpye:AWG20;lead wire length,model will be customerised by dient requestmant under allowed circumstamce
of adoptable dimension
