Variable Frequency Drive 3 Ton Electric Chain Hoist Wireless Remote Control VFD Precision Lifting 380V Industrial

The KOEO KN03-01 is an advanced 3 ton electric chain hoist featuring integrated Variable Frequency Drive (VFD) technology and dual-mode wireless remote control operation. Designed for precision manufacturing environments, automated production lines, and applications requiring smooth acceleration and deceleration control, the KN03-01 eliminates the jerky start-stop motion of conventional hoists. The VFD inverter enables stepless speed regulation from creep-speed micro-positioning at 0.8 m/min to full-speed lifting at 5.4 m/min, providing unmatched load handling precision for delicate assembly and mold alignment tasks. The industrial-grade wireless remote control system offers up to 100 meters of operational range, allowing operators to maintain optimal visibility and safe positioning relative to the suspended load at all times.

• Variable Frequency Drive (VFD) Technology: The built-in VFD inverter provides stepless speed control from 0.8 to 5.4 m/min, enabling soft-start and soft-stop operation that eliminates mechanical shock, reduces chain wear, and extends component service life by up to 30 percent compared to conventional single-speed hoists.
• Dual-Mode Wireless Remote Control: The industrial-grade 433 MHz wireless remote provides reliable operation with a transmission range of up to 100 meters in open areas. The dual-mode system also includes a wired 48V pendant backup controller, ensuring uninterrupted operation if wireless signal is temporarily unavailable.
• Precision Micro-Positioning: Creep-speed mode at 0.8 m/min enables millimeter-level positioning accuracy for mold installation, CNC machine tool loading, and precision assembly operations where gradual load placement is critical to avoid damage to high-value components.
• IP55 Enclosed VFD Motor: The 3.0 kW inverter-duty motor with IP55 protection rating resists dust, coolant spray, and humidity common in machining and manufacturing environments. Class F insulation with enhanced winding varnish ensures reliable operation under VFD-generated voltage spikes.
• G80 Alloy Steel Load Chain: Premium 10.0 mm diameter G80 calibrated alloy steel chain provides a 4:1 safety factor with superior fatigue resistance for high-cycle automated production environments. Anti-corrosion surface treatment extends chain life in humid or chemically active conditions.
• Dual Electromagnetic DC Brake System: Twin independent DC electromagnetic brakes provide redundant holding power with instant engagement upon power interruption or emergency stop activation. The dual-brake configuration ensures maximum operator and load safety in all operating scenarios.
• Intelligent Electronic Overload Protection: Electronic load sensing continuously monitors lifting torque and automatically halts operation when the 3-ton rated capacity is exceeded. Integrated phase sequence protection prevents motor damage from incorrect power supply wiring during installation.

The KN03-01 VFD electric chain hoist is engineered for automotive assembly lines requiring precision engine and transmission placement, injection mold handling in plastics manufacturing, CNC machining center workpiece loading and unloading, wind turbine component assembly, steel coil handling in metal processing facilities, and automated warehouse systems with programmable lifting sequences. The VFD soft-start capability significantly reduces load swing during initial lift, making it ideal for operations handling fragile or high-value components requiring zero-impact handling.

Each KN03-01 hoist is packed in a KOEO-branded heavy-duty plywood case with VCI anti-rust film, reinforced high-density foam padding, and silica gel desiccant packs. The export-grade outer carton with steel banding ensures secure international transit. Every unit undergoes 100 percent factory load testing at 1.25 times rated capacity (3.75 tons) across the full VFD speed range before shipment with test certificate documentation. CE certified compliant with EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. Manufactured under ISO 9001:2015 quality management systems. G80 chain certified to EN 818-7 standard. Standard delivery within 7 to 10 working days for stock models and 20 to 25 days for bulk production orders.