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DC Speed Control Cabinet

DC Speed Control Cabinet

The DC Speed Control Cabinet is a high-performance speed regulation device for DC motor systems. By adjusting motor voltage and current, it enables smooth start and stop, precise speed control, and efficient operation. The cabinet features reliable construction, fast response, and easy operation, widely applied in metallurgy, power systems, mining, hoisting machinery, and various industrial automation equipment.

The cabinet is made of high-quality materials and houses an advanced DC speed control system with protection devices. It supports multi-level speed regulation and remote monitoring, ensuring smooth motor start, speed adjustment, and braking, while reducing mechanical impact and equipment wear, improving production efficiency, and extending motor lifespan.

  • Precise DC speed control for smooth start and stop

  • Multi-level speed adjustment for various load conditions

  • Fast response, minimizing mechanical impact

  • Comprehensive protection, safe and reliable

  • Extends motor and equipment service life

Applications: Metallurgical rolling mills, power transmission systems, mining machinery, hoisting equipment, and industrial automation production lines.

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Excerpt:

The DC speed control cabinet is designed to regulate the speed of DC motors efficiently and reliably. It provides smooth acceleration, precise speed adjustment, and stable operation for industrial applications such as manufacturing, processing, and automation systems.

DC Speed Control Cabinet: Precision Control and High-Efficiency Industrial Drive Solution


01 Product Overview

The DC Speed Control Cabinet from Simo Motor is a high-precision control system designed for industrial DC motors. Utilizing advanced power electronics and intelligent control algorithms, it delivers accurate speed and torque regulation while ensuring stable operation.

This cabinet integrates thyristor rectification technology, PID closed-loop control, and multiple protection functions, making it ideal for industries such as metallurgy, mining, hoisting, textile, and printing, where precise speed control is essential.

Modular design and intelligent control provide a reliable, energy-efficient DC motor control solution, adaptable to various industrial operating conditions.

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直流调速柜

02 Core Technical Features

1. Precision Speed Control

  • Wide Range Adjustment: Speed ratio up to 1:20 (standard) or 1:100 (extended) to meet diverse process requirements.
  • High Accuracy: Static accuracy ≤1%, dynamic accuracy ≤3%.
  • Multiple Operation Modes: Supports constant torque and constant power modes.
  • Smooth Speed Regulation: Stepless adjustment minimizes mechanical shocks.

2. Intelligent Control System

  • PID Closed-Loop Control: Adaptive PID algorithms automatically optimize control parameters.
  • Digital Triggering Technology: Ensures symmetrical and stable pulse output.
  • Multiple Signal Interfaces: 4-20mA, 0-10V standard inputs for easy integration.
  • Communication Support: RS485, Profibus protocols for system connectivity and remote monitoring.

3. Multi-Layer Protection

  • Overcurrent Protection: Rapid detection and power cut-off.
  • Overvoltage/Undervoltage Protection: Monitors supply voltage fluctuations.
  • Overspeed Protection: Monitors motor speed in real-time to prevent overspeed.
  • Temperature Protection: Protects critical components from overheating.
  • Phase Loss Protection: Detects power phase loss to safeguard the rectifier system.

03 Technical Specifications

ParameterSpecification
Input Power3-phase AC 380V±10%, 50/60Hz
Speed Range1:20 (standard), 1:100 (wide range)
Control AccuracyStatic ≤1%, Dynamic ≤3%
Load TypeConstant torque / Constant power selectable
Ambient Temperature-10℃~+40℃
Protection LevelIP20, IP42 optional
Control ModeLocal / Remote Control

04 Application Fields

Heavy Industry

  • Metallurgy: Rolling mills, coilers, straighteners.
  • Mining: Hoists, crushers, conveyors.
  • Hoisting Equipment: Bridge and gantry cranes.

Manufacturing

  • Textile Machinery: Spinning and weaving speed coordination.
  • Printing Equipment: Precise speed control for printing and laminating machines.
  • Plastic Machinery: Extruders, injection molding machines.

Special Industrial Applications

  • High Inertia Loads: Fans, pumps with smooth start-up.
  • Precision Control Processes: Production requiring stable speed control.
  • Harsh Environments: High temperature, high humidity conditions.

05 Product Advantages

Performance Advantages

  • Fast Response: Advanced algorithms with response time <100ms.
  • Stable Operation: Comprehensive protections ensure reliable long-term operation.
  • Energy Efficient: Power factor >0.9, efficiency >95%.
  • Easy Maintenance: Modular design with advanced diagnostic functions.

Technical Advantages

  • Intelligent Optimization: Automatically identifies load characteristics and optimizes control.
  • High Compatibility: Supports various DC motor specifications.
  • Flexible Expansion: Interfaces reserved for future upgrades.
  • User-Friendly Operation: Intuitive interface for simple parameter configuration.

06 Selection Guidelines

Key Selection Factors

  • Motor Specifications: Voltage, current, power, rated speed.
  • Load Characteristics: Load type, inertia, torque requirements.
  • Speed Requirements: Range, control accuracy, dynamic response.
  • Environmental Conditions: Temperature, humidity, protection level.

Configuration Recommendations

  • Standard Configuration: For general industrial applications.
  • Enhanced Configuration: For high-precision dynamic control.
  • Special Configuration: For harsh industrial environments, enhanced protection.

07 Installation & Maintenance

Installation Requirements

  • Environment: Well-ventilated, no corrosive gases or conductive dust.
  • Electrical Conditions: Stable supply voltage, reliable grounding.
  • Space: Adequate ventilation and maintenance access.

Maintenance

  • Daily Checks: Monitor operation, temperature, and noise.
  • Regular Maintenance: Clean filters, tighten connections, inspect components.
  • Professional Servicing: Recommend semi-annual professional inspection and maintenance.

08 Service & Support

Simo Motor provides comprehensive technical support:

  • Technical Consultation: Expert advice and tailored solutions.
  • Installation Guidance: On-site professional assistance.
  • Operator Training: Specialized training for personnel.
  • After-Sales Warranty: 24-month warranty with lifetime technical support.

Conclusion

The Simo Motor DC Speed Control Cabinet offers advanced technology, reliable performance, and full-service support, making it an ideal choice for industrial DC drive applications. It enhances equipment efficiency, reduces energy consumption, and improves production stability.

For detailed specifications or customized solutions, contact the Simo Motor technical team for expert guidance and professional consultation.

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Simo Motor After-Sales Service Policy: Quality First, Customer Foremost

Sincere, Attentive, Dedicated — Simo Always Cares


Preface

Thank you for choosing Simo Motor products. As a company with many years of experience in motor manufacturing, Simo Motor always adheres to the principle of "Quality First, Customer Foremost." Through a comprehensive service system, we ensure that every customer enjoys efficient and professional after-sales support.

Our products have repeatedly been awarded provincial, municipal, and national honors such as “High-Quality Product,” “China Famous Brand Product,” “National Exemption from Inspection Product,” and “China Well-Known Trademark.” To further enhance customer experience, we have formulated this after-sales service policy, aimed at providing comprehensive, prompt, and satisfactory service guarantees.


1. Quality Assurance Commitment

Simo Motor strictly implements full quality control in accordance with international standards, national standards, industry standards, and corporate standards:

  • All products are manufactured under the effective operation of the GB/T 19001-2008/ISO 9001:2008 Quality Management System, ensuring rigorous inspection from raw material intake to final product delivery.

  • We guarantee that all products provided are brand new, unused, and meet the quality requirements stipulated in customer contracts.

  • We maintain a quality management system compliant with GB/T 19001-2000 idt ISO 9001:2000, ensuring its effective operation.


2. Pre-Sales Service

To help customers make the best choice, Simo Motor provides comprehensive pre-sales support:

  • Professional Technical Consultation: Responding to customer inquiries about motor products and technical issues.

  • Personalized Solutions: Objectively introducing Simo Motor product features and performance, and providing customized power solutions.

  • Comprehensive Product Information: Providing detailed quotations, drawings, and motor samples to help customers fully understand the product.


3. Ordering Instructions

To ensure the motor meets your usage requirements, please specify the following parameters when placing an order:

  • Basic Parameters: Motor model, rated power, rated voltage, number of poles, rated frequency.

  • Installation Environment: Protection level, cooling method, installation type, rotation direction, environmental conditions, cable exit position.

  • Usage Conditions: Installation altitude, working environment temperature, motor load type.

For special requirements, a separate technical agreement must be signed before placing an order. You may also call our customer service hotline 159-0292-3228 for professional guidance.


4. Warranty Policy Details

1. Warranty Period

Simo Motor provides a warranty of up to two years from the shipping date. Within this period, if the motor is damaged or cannot operate properly due to manufacturing defects, Simo Motor will repair or replace parts or the motor free of charge.

2. Warranty Coverage

  • The warranty covers product quality issues caused by our company, with free replacement of parts or free repair.

  • Warranty services require correct use and regular maintenance, following the original operation manual and recommended lubrication, cleaning, and care instructions.

3. Exclusions from Warranty

The following are not covered by the warranty:

  • Damage caused by non-designated personnel

  • Unauthorized modifications or self-repair

  • Use of non-official parts or software

  • Failure to follow operation manual instructions for use, handling, and maintenance

  • Damage caused by natural disasters (wind, fire, flood, earthquake, etc.)

  • Normal wear and tear under standard use


5. Post-Warranty Service

After the warranty expires, Simo Motor continues to provide service support:

  • Lifetime Paid Service: After the warranty period, if the product fails, we offer lifetime paid service, supplying consumable parts and components at cost price.

  • Regular Follow-Up: Our after-sales staff will periodically contact users to check product status and address potential issues.

  • Professional Repair Services: The company undertakes repair services for all types of motors, whether under warranty or not, providing professional maintenance and inspection.


6. Service Commitment and Standards

Simo Motor upholds the "Sincere, Attentive, Dedicated — Simo Always Cares" Three-Heart Service Philosophy, ensuring excellent customer experience through standardized service processes:

  • Professional Service Team: A dedicated team provides installation guidance, fault diagnosis, and repair services, ensuring efficient motor operation.

  • Rapid Response Mechanism: After receiving customer feedback, our after-sales team responds promptly and formulates quick solutions.

  • Full Tracking and Records: All service processes are documented to ensure traceability and continuous improvement of service quality.


7. Customer Complaint Channels

If you are not satisfied with Simo Motor’s services, please provide feedback through the following channels:

  • Direct complaints to the service department or headquarters

  • Call our customer service hotline: 159-0292-3228

We take every feedback seriously and continuously strive to improve our service quality.


Conclusion

Simo Motor will continue to provide high-quality products and professional after-sales service. Through a complete service system, we solve your concerns and ensure peace of mind. We firmly believe that only with customer success can Simo Motor grow. Choosing Simo Motor means choosing quality and trust.

Simo Motor — Dedicated Service, Creating the Future Together!

Simo Motor Brand Advantages: Outstanding Quality, Leading Innovation and Development in the Motor Industry

Over 60 Years of Professional Experience, Setting the Benchmark in the Motor Industry


Brand Heritage and Strength

Simo Motor (formerly Xi’an Motor Factory) was established in 1955. As one of the leading enterprises in China’s motor industry, it has over six decades of manufacturing experience and technical expertise. Today, the company has grown into a large-scale modern enterprise integrating motor product R&D, manufacturing, and sales. Its products are widely used in key sectors such as power, coal, petroleum, mining, metallurgy, railways, transportation, chemical, agriculture, water conservancy, and aviation.

With profound technical expertise and continuous innovation, Simo Motor has built a prestigious brand image in the motor industry. Its products are exported to more than 40 countries and regions, including North America, Europe, the Middle East, Southeast Asia, Africa, and Australia, earning trust and praise from global customers.


Core Technology Advantages

1. Leading R&D and Innovation Capability

Simo Motor treats technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Composed of senior engineers and technical experts focusing on cutting-edge motor technology research and applications.

  • Continuous Investment in Technology: 5%-7% of annual sales revenue is invested in R&D to ensure continuous innovation and product upgrades.

  • Patented Technology Achievements: Over 100 national patents, with multiple products receiving national and provincial science and technology progress awards.

  • Industry-Academia Collaboration: Strategic partnerships with renowned universities and research institutes to advance motor technology development.

2. Excellent Product Quality System

Simo Motor has established a robust quality assurance system to ensure each motor meets the highest standards:

  • International Certifications: ISO9001 Quality Management, ISO14001 Environmental Management, and OHSAS18001 Occupational Health and Safety certifications.

  • Strict Quality Control: 68 rigorous inspection processes from raw material procurement to final product delivery to ensure zero defects.

  • Advanced Testing Equipment: Equipped with international motor performance testing systems, vibration analyzers, noise measurement devices, and more.

  • Continuous Quality Improvement: Comprehensive feedback mechanisms for continuous optimization of production processes and product stability.


Product Advantages and Features

1. High-Efficiency Energy-Saving Technology

Simo Motor actively responds to national energy-saving policies with a series of high-efficiency products:

  • High-Efficiency Motor Series: Meets the national GB18613-2020 energy efficiency standards, with some products reaching IE4/IE5 ultra-high efficiency levels.

  • Energy-Saving Technology: Uses premium silicon steel, low-loss bearings, and efficient cooling systems to reduce operating energy consumption.

  • Intelligent Control Technology: Advanced variable frequency control systems optimize motor operation, improving energy savings by 15%-30%.

2. Outstanding Performance

Simo Motor products are known for high reliability, long service life, and low maintenance costs:

  • Powerful Output: Optimized electromagnetic design ensures high starting torque and strong overload capability.

  • Low Vibration and Noise: Dynamic balancing and noise reduction technologies ensure vibration and noise levels below national standards.

  • Strong Environmental Adaptability: Designed for harsh conditions with heat resistance, moisture-proof, and corrosion-resistant features.

  • Long Lifespan Design: Key components use specialized treatment and premium materials, with a design life exceeding 100,000 hours.

3. Comprehensive Product Series

Simo Motor provides a wide range of products to meet diverse customer needs:

  • High-Voltage Motors: Voltage levels of 6kV, 10kV, and power range 200–10,000 kW.

  • Low-Voltage Motors: Series such as YX3, YE3, YE4, with power range 0.55–1,000 kW.

  • Explosion-Proof Motors: Certified for use in flammable and explosive environments.

  • Special Motors: Customized for industries such as mining, metallurgy, and marine applications.

  • Non-Standard Customization: Strong ability to provide tailored solutions according to customer requirements.


Service System Advantages

Simo Motor has established a comprehensive customer service system:

  • Pre-Sales Technical Support: Professional selection guidance, solution design, and product demonstration.

  • In-Sales Support: Strict contract compliance, on-time delivery, and installation guidance.

  • After-Sales Guarantee: 24-month warranty, 24/7 technical support, 48-hour on-site service commitment.

  • Lifetime Maintenance Support: Customer equipment files maintained for full lifecycle service.


Industry Application Advantages

Simo Motor has extensive experience across key industries:

  • Power Industry: Provides reliable motors for thermal, hydro, and nuclear power.

  • Coal Industry: Explosion-proof motors certified for coal mine safety.

  • Petrochemical Industry: Corrosion-resistant and explosion-proof motors for harsh environments.

  • Metallurgy: High-overload, high-temperature resistant motors meet specialized equipment needs.

  • Transportation: Customized motors for railways, urban transit, and ports.


Brand Honors and Certifications

Simo Motor’s excellent product quality and market performance have earned multiple honors:

  • China Famous Brand Product, National Exemption from Inspection Product, China Well-Known Trademark

  • High-Tech Enterprise, Provincial Enterprise Technology Center

  • Multiple provincial and ministerial-level science and technology awards

  • Credit-worthy and trustworthy enterprise, AAA-level quality reputation


Conclusion

Choosing Simo Motor means choosing reliable quality, leading technology, and comprehensive service support. Over 60 years of professional accumulation have given Simo Motor deep technical expertise and rich industry experience, providing customers with the best motor products and complete power solutions.

In the future, Simo Motor will continue to adhere to the philosophy of “Quality First, Innovation Driven, Customer Foremost”, constantly improving product technology and quality, creating greater value for customers, and contributing to the development of China’s motor industry.

Simo Motor — Powerful, Efficient, and Fully Supported!

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