Overview
The SL 3 Series Frequency Converter is a premium solution designed for speed and torque control of three-phase induction motors in high-demand industrial applications. Engineered with advanced vector control technology, this converter ensures precise motor operation, energy efficiency, and system reliability, ideal for pumps, fans, and conveyors requiring dynamic load management.
Features
Advanced Control Technology:
Sensorless vector control (SVC) and torque vector control (TVC), achieving torque accuracy ±5% and speed regulation ≤0.1% without encoder feedback.
Wide power range: 0.75-500kW, supporting motors from IE2 to IE5 efficiency classes, with auto-tuning for optimal performance across load ranges.
Energy & Space Efficiency:
Active front-end (AFE) option reduces harmonic distortion (THD ≤5%) and recovers 95% of regenerative energy, compliant with IEEE 519-2014.
30% smaller footprint than comparable converters (using 3D heat sink design), saving panel space in compact machinery.
Reliability & Protection:
IP54-rated enclosure (NEMA 12) with conformal coating, resisting dust, moisture, and chemical vapors in harsh industrial environments.
Comprehensive protection: short-circuit (5x rated current), overvoltage (±20%), and bearing current suppression (reducing motor bearing damage by 80%).
Smart Connectivity:
Built-in PLC (2k steps) for local logic control, with Ethernet IP, Profinet, and Modbus TCP/IP protocols for IIoT integration.
Mobile app for wireless commissioning (Bluetooth 5.0), reducing setup time by 60% and enabling real-time performance monitoring.
Application
Critical for industrial motor control, the SL 3 Series is used in:
Mining Equipment: Controls conveyor belts and slurry pumps in underground mines, with ruggedized models (IP66) for dusty environments.
Power Generation: Regulates fan speed in gas turbines, optimizing heat dissipation while complying with NERC CIP standards.
Paper Mills: Drives winders and calenders, ensuring constant tension control (variation ≤1%) in high-speed paper production lines.
HVAC Systems: Powers large chillers and cooling towers in data centers, with energy-saving modes reducing electricity costs by 40%.
Why Choose Us
Control Precision: Torque vector control outperforms scalar control by 30% in low-speed stability, ideal for high-inertia loads.
Future-Proof Design: Upgradeable firmware and modular I/O, supporting retrofitting of legacy systems without hardware changes.
Environmental Compliance: RoHS 3.0 and REACH compliant, with optional ECO mode for maximum energy savings in partial-load conditions.
Service Assurance: 10-year warranty on capacitors and 24/7 remote diagnostics, minimizing downtime for mission-critical applications.
