A permanent magnet electric drum direct-drive system solution for belt conveyors in mining, chemical, and building materials industries. Replacing traditional drive systems with gear reducers and asynchronous motors, the STY series permanent magnet direct-drive drums are paired with WD200 series high-performance universal variable frequency drives and energy feedback units, Wolong Shunyun IoT modules and PLCs, advanced wireless temperature-vibration integrated sensors, and the Wolong iMotorLinx Shunzhi Cloud industrial internet platform to achieve simplified transmission chains, S-curve smooth starts, precise speed-torque control, and energy recovery.
Use Cases
Direct drive retrofitting and new installation of belt conveyors for mining, chemical, building materials, and other industries. Belt width 650 to 1600mm, belt speed 1.6 to 5.0m/s, drum diameter 500 to 1250mm, power 22 to 315kW.
Solve pain points
Traditional drives use a reducer paired with an asynchronous motor, resulting in multiple transmission stages, complex structure, and high procurement and maintenance costs.High failure rates of gearboxes and fluid couplings, frequent oil leaks and wear issues, and unplanned downtime disrupting continuous production.High starting impact causes severe stress on the conveyor belt and rollers, shortening equipment lifespan.At low load rates, the efficiency and power factor of asynchronous motors drop significantly, resulting in a system total efficiency of only 66% to 84%, leading to substantial energy waste.Poor speed regulation performance; difficult to adapt to changes in belt speed and load, and to meet multi-motor power balancing requirements.Lack of data collection and preventive detection capabilities; low levels of automation and intelligence.
Solution Composition
STY Series Permanent Magnet Direct-Drive Drum Drive System: Replaces gear reducers with asynchronous motors to simplify procurement and maintenance. The S-type smooth start extends service life, reduces failure rates, and enables precise speed-torque control for energy savings and emission reduction. Customizable drum diameters from 500 to 1250mm, rated power from 22 to 315kW, and rated belt speeds from 1.6 to 5.0m/s. Rated voltages of 380V and 660V; duty cycle S1 (S2, S3, etc., available); efficiency class 1 (GB/T 30253); mounting type B3; insulation class F (H-class available); protection rating IP55 (IP54, IP56, etc., available); cooling method IC71W (IC416 available). Steel housing, grease-lubricated bearings with fill/drain fittings, and optional PT100 or PTC protection. Available power ratings 22 to 315kW for drum diameters 500, 630, 800, 1000, 1250mm and belt widths 650, 800, 1000, 1200, 1400, 1600mm at belt speeds 2, 2.25, 2.5, 3.15, 3.5, 4.0, 5.0m/s.
WD200 Series High-Performance General-Purpose VFD: Wolong's next-generation high-performance drive covering power ranges 0.75 to 1000kW. Supports four power types and features advanced motor control algorithms optimized for Wolong motors, compatible with asynchronous, permanent magnet synchronous, and synchronous reluctance motors. Vector control ensures precise speed regulation with high reliability, performance, and scalability, supporting multi-drive setups and easy cabinet integration. Narrow-body design across the series saves cabinet space, reduces costs, and supports multiple mounting options. Delivers 0.5Hz output with 150% rated torque (SVC) and 0Hz output with 200% rated torque (FVC). Excellent low-frequency performance allows stable operation under rated load at 1Hz (SVC) and 0Hz (FVC). Speed control accuracy error is within 0.1% of rated speed (SVC) and 0.05% (FVC), with efficiency up to 98%. Advanced current suppression minimizes shock currents from load changes, reducing equipment downtime. Output frequency 0 to 600Hz; input options include three-phase 380V to 480V and 660V to 690V at 50Hz/60Hz. Voltage imbalance < 3%, frequency fluctuation ±5%, and distortion meets IEC61800-2 standards. Protection rating IP31 (higher ratings customizable). Wall-mounted with forced air cooling; supports reactors and filters. Grid-friendly with no impact on the grid or surrounding equipment.
Energy Recovery Unit: Enables energy recycling via vector control, managing regenerative energy during downhill conveying and braking.
Wolong Shunyun IoT Module & PLC: Facilitates control-layer data exchange and system communication parameter tuning. Supports remote monitoring and debugging with app and web interfaces for ease of use. Includes extensive expansion communication and I/O resources.
Advanced Wireless Temperature-Vibration Integrated Sensor: Captures motor temperature and vibration data for spectrum analysis and remote fault diagnosis.
Wolong iMotorLinx Shunzhi Cloud Industrial Internet Platform: Real-time monitoring of key metrics including operating count, runtime, load rate, and environmental parameters. Provides diverse visualization tools for multi-scenario data analysis. Features fault diagnosis, spectrum analysis, and remote diagnostics. Allows rapid creation of personalized alert rules with email, SMS, HTTP, and HTTPS notifications for timely alerts. Includes energy-saving analysis capabilities.
