In modern high-speed bar slitting rolling production, the electronic control system directly determines line speed, stability, product accuracy, yield rate and production efficiency. Based on decades of rolling engineering experience and numerous field-proven applications, we deliver a dedicated fully digital high-performance AC drive + advanced automation control solution for bar slitting mills, covering rough, intermediate and finishing stands main drives, flying shears, cooling beds, roller tables, conveying systems and full-line coordinated control.
Powered by industry-leading drive platforms and high-speed PLC systems, we help mills achieve fully automatic, high-efficiency, low-energy consumption and ultra-stable operation, perfectly compatible with 2-slitting, 3-slitting, 4-slitting and higher multiple slitting processes, significantly improving output, dimensional accuracy and overall economic benefits.
1. Fully Digital Main Drive Control: High Torque, Fast Response, Ultra Precision
Our solution adopts an optimized common DC bus multi-drive structure with equivalent 12-pulse rectification design, which significantly reduces grid harmonics, minimizes interference and lowers impact on the power supply. Compared with traditional 6-pulse structures, it features smaller current distortion, more stable voltage waveform, stronger anti-interference ability and smoother operation under complex working conditions.
- Stand Main Drives: 600–1000KW high-power motor drives, supporting 150% heavy overload (30s) for high-speed rolling high-torque demands
- Flying Shear Special Drives: 250–418KW flying shear dedicated drives, ultra-fast dynamic response, high cutting accuracy, 250% overload capacity (20s)
- Drive Platforms: ABB ACS880 / Siemens S120 dual-brand options, globally recognized for stability and reliability
- Speed Steady-State Accuracy: ±0.01%; Impact Speed Drop: 0.25%/s
- System Availability: up to 99%
Each main motor is equipped with a 1024-line high-precision hollow shaft encoder, stator winding Pt100 temperature monitoring, bearing temperature monitoring, anti-condensation space heaters, and complete motor protection and condition monitoring logic. The drive system integrates comprehensive protection against overcurrent, overvoltage, overspeed, phase loss, overtemperature and ground faults, with real-time fault recording, diagnosis and historical query functions to ensure long-term safe, stable and low-maintenance operation under heavy loads.
For the high-speed impact characteristics of slitting rolling, we further optimize current loop and speed loop parameters to achieve fast load distribution and dynamic torque control, effectively avoiding common problems such as pile-up, tension and size fluctuation, making high-speed slitting rolling smoother and more stable.
2. Siemens S7-1500 Automation System: The Intelligent Brain of the Whole Line
The solution adopts Siemens SIMATIC S7-1500 high-performance PLC controller, with strong computing power, fast response speed and deterministic scan cycle, which can easily meet the high-speed synchronous control requirements of multi-stand slitting rolling.
- Modular design, flexible expansion, supporting multi-CPU parallel computing architecture to enhance overall processing performance
- Integrated PROFINET / PROFIBUS communication interfaces, easy interconnection with HMI, drives, field instruments and remote I/O
- Complete logic control, speed cascading, tension control, flying shear length-fixing control, billet full tracking control
- Powerful fault self-diagnosis, real-time data recording and production report generation for daily operation and maintenance
- Support data interaction with upper-level MES/ERP systems, laying the foundation for smart factories and digital production
- Support module hot-swap, quick replacement, short downtime and high maintainability
- Built-in data recording gateway for efficient data access across buses and networks
- Complete safety design, supporting safety programming and safety interlocks to protect personnel and equipment safety
The system realizes full-line speed synchronization, micro-tension closed-loop control, billet micro-tracking and accurate fault location, greatly reducing manual intervention, improving rolling rhythm and equipment utilization, and making the whole rolling line operate more intelligently and efficiently.
3. Complete Auxiliary Drive Solution: Stable, Efficient & Energy Saving
For the numerous roller tables, conveying chains, traversing carriages and positioning equipment in bar rolling lines, we provide a complete set of low-voltage high-performance variable frequency drive control systems with stable performance and high cost performance.
- Applicable Equipment: Infeed Roller Tables, Aligning Roller Tables, Cooling Bed Discharge Roller Tables, Post-Shear Roller Tables
- Conveying Equipment: Bar Shifting Chains, Layer Transport Carriages, Bundling Roller Tables, De-Bundling Roller Tables
- Drive Platform: ABB ACS580 series, V/F control mode, stable, reliable and energy-saving
- Full-line motor variable frequency control, stepless speed regulation, fast response, significant energy-saving effect
- Centralized monitoring, interlock control, fault alarm and emergency stop protection
- Custom designed for high-temperature, high-dust, high-humidity and long-term continuous operation environment
The auxiliary drive system adopts intelligent group control mode, which can realize unified speed regulation, independent fault detection, zone start/stop and interlock protection, ensuring the orderly and coordinated operation of all auxiliary equipment in the whole line, reducing no-load loss and improving overall operation efficiency. It also supports segmented energy-saving control, automatically reducing frequency during non-feed periods to further reduce power consumption and equipment wear.
4. Complete System Scope: One-Stop EPC Turnkey Service
We provide the full supply of complete electrical control systems and full-cycle supporting services, truly realizing one-stop turnkey, reducing interface coordination and shortening project cycle.
- Complete Engineering Design: Basic Engineering, Detailed Design, Schematic Diagrams, Layout Drawings, Program Development
- Full Equipment Supply: Main Drive Systems, PLC Automation Systems, Low-Voltage Power Distribution, Operator Stations, Control Panels
- Field Components: Sensors, Encoders, Photoelectric Switches, Communication Networks, Special Cables and Connectors
- Field Services: Installation Guidance, Cold Commissioning, Hot-Load Test Run, Performance Test and Acceptance
- Professional Training: On-site operation training, maintenance training, troubleshooting training for customers
- Complete Technical Documentation: Circuit Diagrams, Operation Manuals, Maintenance Manuals, As-Built Drawings
- Long-Term Support: After-Sales Service, Spare Parts Supply, System Upgrade and Technical Consultation
Our supply scope covers all electrical and automation systems required for rolling mill production, minimizing interface coordination and making project execution more efficient and smoother.
5. Strict Performance Guarantee & Industry-Proven Indicators
- Speed Control Steady-State Accuracy: ±0.01%
- Dynamic Response Index: Impact Speed Drop 0.25%/s
- System Availability: ≥99%
- Complete Safety Interlock Protection: Overcurrent, Overvoltage, Overspeed, Overtemperature, Phase Loss, Fault Alarm
- Complies with national and international industrial standards, stable and reliable in harsh on-site environments
- Long-term stable operation under high-temperature, dust, vibration and complex working conditions
- Verified by numerous rolling mill projects, high system maturity and stability
All indicators are verified by field measurements, meeting the requirements of continuous high-intensity production, and achieving long-term stable, efficient and low-failure operation for customers.
6. Why Choose Our Slitting Mill Electronic Control Solution?
✅ High-Speed & High-Precision: Fully compatible with high-speed multi-line slitting rolling processes
✅ Ultra-High Stability: Low failure rate, high availability, maximizing effective production time
✅ Fully Automatic Operation: Reduce labor intensity, minimize manual intervention, improve product stability
✅ Energy Saving & Low Consumption: Optimize drive efficiency, reduce power consumption and operation costs
✅ One-Stop Service: Full-cycle service from design, supply, installation to commissioning and training
✅ Mature Technology: Numerous field-proven applications, mature and reliable
✅ Professional Team: Senior engineers with extensive experience in rolling mill electronic control
✅ Customized Solutions: Personalized design according to different rolling mill parameters and output
Whether you are planning a new bar slitting rolling mill, carrying out electronic automation upgrade of old lines, or implementing high-speed transformation and capacity expansion, we can provide you with professional, reliable and cost-effective customized electronic control solutions.
