CRRC EC Series Motor Controllers

The CRRC EC Series Motor Controllers are high-performance power conversion and control devices developed by CRRC, engineered to deliver precise, efficient control for electric motors across heavy-duty and new energy vehicle scenarios.
Encased in a robust, compact structure with clearly labeled terminals, these controllers integrate advanced power electronics technology to meet the demands of mining electric locomotives, rubber-tired vehicles, logistics vehicles, and new energy automobiles, balancing efficiency, reliability, and flexible integration for heavy-load motor control operations.
We provide targeted support for this motor, including field adaptation testing, operation training, and after-sales maintenance, to meet the specific demands of mining logistics.

Advantages of CRRC EC Series Motor Controllers

Adopting optimized power electronics topology and scientifically validated high-grade electronic components, the EC series delivers exceptional energy conversion efficiency, minimizing power loss during motor drive operations to reduce overall energy consumption and operational costs for vehicle operators.
Backed by rigorous component screening and a robust structural design, the controllers ensure stable performance under harsh operating conditions such as mining site vibration and temperature fluctuations, lowering fault rates and supporting reliable long-term continuous operation for heavy-duty vehicles.
It offers broad compatibility across diverse vehicle platforms—including mining electric locomotives, rubber-tired vehicles, logistics vehicles, and new energy automobiles—with a standardized terminal interface that enables seamless integration with various motor and power system configurations.
The series leverages scientifically selected, high-quality electronic components paired with optimized thermal management, extending the controller’s service life and reducing the risk of component failure in high-load scenarios, while maintaining consistent electrical performance under peak operating demands.
The compact, panel-mounted enclosure saves valuable installation space in vehicle compartments, while its modular terminal layout simplifies wiring and on-site maintenance, enhancing operational flexibility and reducing commissioning time when adapting to different vehicle platforms.

Technical Specifications

General Specifications of CRRC EC Series Motor Controllers

Rated Power:15 – 75 kW Explosion-proof rating: Ex d I Mb Certification: Mine Product Safety Mark (MA) Certification Key Features: High conversion efficiency, high reliability, scientific and reasonable component selection Application Scenarios: Motor control for mining locomotives, rubber-tired vehicles, logistics vehicles, and new energy vehicles

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Motor Model	Power Range	Applicable scenarios
EC Series Motor Controllers	15 – 75 kW	Motor control for mining locomotives, wheeled vehicles, logistics vehicles, and new energy vehicles
Explosion-proof Permanent Magnet Motor for Rubber-Tired Vehicles	200 – 1600 kW	Driving various general-purpose machinery, such as belt conveyors, ball mills, and cutting machines
Flameproof Permanent Magnet Synchronous Variable Frequency Drive Motor	200 – 1600 kW	Driving various general-purpose machinery, such as belt conveyors, ball mills, and cutting machines
TBVF Series Explosion-Proof Disc Permanent Magnet Motor	5.5 – 55kW	Flammable and explosive gas environments such as coal mines, chemical plants, natural gas plants, and metallurgical plants.
Semi-Direct Drive Permanent Magnet Motor	200 – 1600 kW	Driving various general-purpose machinery, such as belt conveyors, ball mills, and cutting machines
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Advantage Item	Detailed Description
Exclusive MA Certification	The only manufacturer in China to obtain the Mine Product Safety Mark (MA) Certification for disc motor drive systems, ensuring full compliance with national mining safety regulations.
System-level Matching	Co-designed motor and controller with deeply optimized control algorithms, delivering synergistic efficiency and reliability beyond individual components.
Full Working Condition Adaptability	Full power coverage from 5.5kW to 75kW, meeting the needs of multiple industries including mining, chemical, new energy, and more.
Low Maintenance Cost	Brushless motor + high-reliability controller, eliminating brush maintenance and reducing operational costs by over 30%.

TBVF series explosion-proof three-phase permanent magnet synchronous variable frequency motors for mining, with models ranging from 200 to 1600kW.

Can be used to drive various general-purpose machinery, such as belt conveyors, ball mills, cutting machines, and other mechanical equipment.

Used as prime movers in various working conditions in mines, building materials, machinery industries, chemical industries, power plants, and other enterprises.

TBVF Low-Speed High-Torque Series
Voltage Level	380V	660V (690V)	1140V	3300V	6 KV / 10kV
Rated Speed	46rpm, 60rpm, 75rpm, 90rpm	46rpm, 60rpm, 75rpm, 90rpm	46rpm, 60rpm, 75rpm, 90rpm	46rpm, 60rpm, 75rpm, 90rpm	46rpm, 60rpm, 75rpm, 90rpm
Power Range	30 – 355kW	30 – 1400kW	30 – 1600kW	220 – 3215kW	200 – 3215kW
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TBVF Normal-Speed Series
Voltage Level	380V	660V (690V)	1140V	3300V
Rated Speed	1000rpm, 1500rpm	1000rpm, 1500rpm	1000rpm, 1500rpm	1000rpm, 1500rpm
Power Range	132 – 355kW	132 – 355kW	132 – 800kW	900 – 1250kW
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Permanent Magnetization to Electric Drive Products

1. Permanent Magnet Direct Drive System for Flotation Machines and Agitators

This system features vertical installation, direct connection between the output shaft and the main agitator shaft, frequency conversion start, and stepless speed control. It boasts significant advantages such as simple structure, strong load capacity, high efficiency, low failure rate, and low operating and maintenance costs, meeting the various energy-saving retrofit needs of customers in mining, pharmaceutical, and chemical industries.

The equipment structure has been greatly simplified.
Motor volume has been reduced by nearly 40%.
Cooling methods are flexible and easy to use.
Motor and equipment installation and maintenance are convenient.
Higher efficiency, motor maintenance is close to “0”.
The problem of air passage in the shaft has been solved.

Permanent magnet direct drive motor for flotation machines Permanent magnet direct drive motor for mixers

Parameter	Specification
Rated Power (kW)	11kW – 630kW
Rated Voltage (V)	380 / 6000 / 10000
Rated Speed (r/min)	33 – 300
Insulation Class	Class H, Class F
Protection Class	IP55
Noise (dB)	70

In 2022, a permanent magnet direct drive motor for flotation machines was developed by Beikuang Technology, achieving an energy-saving efficiency of over 22%.
The 560kW permanent magnet direct drive motor simplifies the composition of the potassium salt crystallization stirring tank equipment, resulting in high system reliability, significantly improved efficiency, and considerable operational benefits, with an energy-saving efficiency of over 12%.

2. Lithium-ion Battery Reactor Permanent Magnet Synchronous Drive System

Reactors are widely used in chemical, environmental protection, pharmaceutical, food, petroleum, dye, and biochemical industrial production. Especially in chemical processes, various chemical changes require thorough mixing of reactants. For physical changes such as heating, mixing, cooling, and gas absorption, stirring devices are necessary to achieve good results.

Parameter	Original Asynchronous Motor	Permanent Magnet Direct Drive Motor
Rated Voltage	380V	380V
Power	55kW	55kW
Speed	1485 r/min	220 r/min
Torque	350N·m	2387N·m
Power Factor	0.85	0.96
Efficiency	92%	96.3%
Rated Current	106A	93.5A
Gearbox	Required	Not Required

Asynchronous Motor Structure Permanent Magnet Motor Structure
Three-phase asynchronous motor + gearbox + load Permanent magnet direct drive motor + load

After modification, energy efficiency can reach over 10%, and the permanent magnet direct drive motor can be maintenance-free, reducing daily gearbox maintenance work.

3. Ball Mill Permanent Magnet Synchronous Drive System

Ball mills are widely used raw material fine grinding equipment in the building materials industry and are major power-consuming equipment in the industry. Energy-saving modification of ball mills to improve their working efficiency is a key aspect of energy conservation and consumption reduction in the building materials industry.

By replacing the original AC asynchronous motor + hydraulic coupler + gearbox + belt reducer structure with a permanent magnet direct drive control system, and using frequency conversion technology for speed control, the working time of the ball mill can be shortened by 15%, thereby achieving a comprehensive energy saving rate of over 25%.

Parameter Table of Original Drive System of a Cement Plant

Motor Model	Rated Power (kW)	Rated Voltage (V)	Rated Speed (rpm)	Rated Current (A)	Rated Power Factor	Rated Efficiency
MAA800LE	4000	6000	595	490	0.81	0.969
Reducer Model	Input Speed (rpm)	Reducer Ratio	Output Speed (rpm)	Actual Power (kW)	Actual Load Rate	Annual Operating Time (h)
1900A	595	37.47	15.88	3200	80%	7000

Post-modification permanent magnet direct drive system parameter table

Reducer Model	Input Speed (rpm)	Reducer Ratio	Output Speed (rpm)	Actual Power (kW)	Actual Load Rate	Annual Operating Time (h)
1900A	595	37.47	15.88	3200	80%	7000

The ball mill’s operating time is reduced by 15%, resulting in an overall energy saving rate of over 25%.

4. Permanent Magnet Synchronous Drive System for Sand Mills

Sand mills are mainly used for grinding, refining, and dispersing industrial raw materials, and can be widely applied in the food, pharmaceutical, battery material, and powder metallurgy industries.

The product features high efficiency and energy saving, high starting torque, and a wide speed range, meeting the needs of sand mills under various operating conditions.

Permanent magnet direct drive motor system for sand mill

Rated Power (kW)	Rated Voltage (V)	Rated Speed (r/min)	Insulation Class	Protection Class	Noise (dB)
355	380	390	Class H	IP55	85 (Sound Pressure Level)
700	690	330	Class H	IP55

A permanent magnet synchronous grinding mill drive system for new energy material mixing achieves an average energy saving of approximately 15% compared to traditional sand mills.

1. Application Case of Permanent Magnet Direct Drive System for Mineral Processing Flotation Machines

Before Modification: Complex Flotation Machine Structure

Modification Project New Construction Project

Mineral processing tests were conducted on a 24m³ single flotation machine before and after modification. After modification, operating efficiency increased by 3.8% year-on-year under stable technical parameters, and the overall energy saving rate of the equipment reached 45% under the same working conditions.

2. Application Case of Permanent Magnet Direct Drive System for Sand Mills

Traditional Sand Mill Structure (Motor + Reducer)

Sand Mill Direct Drive Structure

The 700kW permanent magnet direct drive motor simplifies the sand mill equipment structure, resulting in high system reliability and significantly improved efficiency, with an overall energy saving rate of 15%.

3. Application Case of Permanent Magnet Direct Drive System for Belt Conveyor Equipment

3.1 Energy Saving Retrofit Project of Bayan Obo Belt Conveyor

Comprehensive measured energy saving of 30%

3.2 Changlai Sand and Gravel Project Becomes an Industry Energy-Saving Benchmark Project

Measured energy saving of 23% under high power conditions

Provides a full range of air-cooled permanent magnet direct drive solutions from 160kW to 1400kW and 380V to 10kV

3.3 425kW Internal Permanent Magnet Direct Drive Hoist

The 425kW internal permanent magnet direct drive hoist helps upgrade and replace mining hoisting equipment, achieving system energy saving and efficiency improvement, with a comprehensive power saving rate of over 15%.