VDN100Q Series Ball Mill Special Inverter | Energy-Saving VFD for Mining
The VDN100Q Series is a specialized high-performance inverter developed for energy-saving control of ball mills. Unlike standard drives, it utilizes an innovative, dedicated control algorithm that dynamically adjusts the motor speed based on real-time load conditions within the ball mill. By optimizing the speed profile rather than running at a constant speed, the VDN100Q significantly reduces energy consumption, provides soft-start capabilities, and enhances overall system efficiency, delivering substantial economic benefits for customers in the mining, cement, and mineral processing industries.
Technical Parameter
Full Series Capability: Up to 630kW available upon request (based on platform capabilities)
High torque output ensures smooth startup even under full load.
Braking unit configuration depends on model and customer requirements.
Key technical advantage
- Significant Energy Savings: Achieves energy savings of 12% – 20% . When replacing a hydraulic coupler with an elastic coupling, savings can reach 23% – 25% or more.
- Dedicated Ball Mill Algorithm: Features a unique dynamic power-saving control program. It monitors stator current in real-time, calculates average torque and current fluctuation, and determines the real-time optimal speed to reduce average operating speed while maintaining grinding efficiency.
- Excellent Soft-Start Characteristics: Limits the starting current to less than twice the motor’s rated current. This eliminates sharp power drops and voltage sags during startup, preventing nuisance tripping and production stoppages.
- Enhanced Power Factor & Transformer Utilization: The built-in DC reactor improves the power factor to above 0.97, increasing the effective capacity of the supply transformer by approximately 20%.
- Intelligent Monitoring & Control: Features a user-friendly Chinese LCD interface for real-time monitoring of output current, voltage, frequency, and equipment status. It allows setting of milling time and automatic shutdown, simplifying management.
- Comprehensive Protections: Includes complete protection functions for the ball mill and drive, such as over-current, over-voltage, overload, under-voltage, phase loss, and short-circuit protection.
- High Return on Investment: The investment payback period is short due to direct electricity savings. Additionally, it reduces mechanical stress, lowering the maintenance rate for mill components and the motor, and extending equipment service life.
Avaliable Product List
| Inverter Model | Ball Mill Tonnage (T) | Motor Power (kW) | Ball Loading Capacity (T) | Dimensions (L×W×H) (mm) |
| VDN100Q 093G3 | 18 | 90 | 20~22 | 1600×600x500 |
| VDN100Q 110G3 | 20 | 110 | 22～24 | |
| VDN100Q 110C3 | 30 | 110 | 32~35 | |
| VDN100Q 132G3 | 38 | 132 | 38~10 | |
| VDN100Q 132G3 | 40 | 132 | 42～45 | |
| VDN100Q 160G5 | 40 | 160 | 42-45 | 200×650×550 |
| VDN100Q 20G3 | 60 | 200 | 60～65 | |
| VDN100Q 220C3 | 60 | 220 | 60-65 | 2000×730×550 |
| VDN100Q 250C3 | 60 | 250 | 10-65 | |
| VDN100Q 250G3 | 100 | 250 | 100~105 | |
| VDN100Q 280G3 | 100 | 280 | 100～105 |
Related Application
FAQ
How does the VDN100Q achieve such significant energy savings on a ball mill?
Traditional ball mills run at a constant speed, regardless of the load inside. The VDN100Q uses a proprietary algorithm that continuously monitors the motor’s stator current to detect the mill’s load condition. It calculates the optimal operating speed in real-time, allowing it to run slower during low-load periods while still maintaining effective grinding. This dynamic speed adjustment reduces the average speed and energy consumption compared to constant-speed operation.
What kind of starting performance can I expect with the VDN100Q?
The VDN100Q is designed to provide excellent soft-start capability. It controls the starting current to less than twice the motor’s rated current -1. This prevents the large inrush current seen with direct-on-line starting, which can cause significant voltage drops on the power grid, tripping of other equipment, and high mechanical stress on the mill’s gearbox and motor.
Does the drive require any special external components for operation?
For basic energy-saving operation, the VDN100Q is largely self-contained. It features a built-in DC reactor which significantly improves the input power factor to over 0.97, reducing the need for external power factor correction. However, for optimal performance and protection, standard input fusing or a circuit breaker is required, sized according to the recommended specifications.
What are the key protections included in the VDN100Q?
The VDN100Q includes a comprehensive suite of protection functions designed specifically for the harsh demands of ball mill operation. These include over-current, over-voltage, under-voltage, overload, input/output phase loss, and short-circuit protection.
How is the VDN100Q controlled and monitored?
The drive features a built-in Chinese/English LCD human-machine interface. This allows operators to easily monitor key parameters like motor current, voltage, output frequency, and the status of auxiliary equipment. Operators can also use this interface to set the total milling time, after which the drive will automatically shut down the mill, simplifying process management.