REXROTH VEP40.3CEN-256NN-MAD-128-NN-FW Digital AC Synchronous Servo Motor

REXROTH VEP40.3CEN-256NN-MAD-128-NN-FW is a digital AC synchronous servo motor produced by Bosch Rexroth. It features high precision, high dynamic response, high reliability and strong environmental adaptability, and is widely used in the field of industrial automation. The following is an introduction to this servo motor:
I. Technical Specifications
Rated Power: 2.2 kW
Rated Speed: 3000 rpm
Voltage: 400 V (Some sources state it can also accept 220 V/380 V power input)
Current: 7.5 A
Rated Torque: 25 N·m
Speed Regulation Range: 0 – 3000 r/min
Torque Fluctuation: ≤ ±0.5%
Acceleration Time: < 50 ms
Efficiency: ≥ 92%
Protection Grade: IP65, capable of preventing dust and water from entering and ensuring stable operation in harsh environments
Operating Temperature: -20℃ ~ 80℃ (Some sources state -25℃ ~ +55℃), suitable for a wide temperature range
Encoder System: 23-bit multi-turn absolute encoder (17-bit single-turn + 12-bit multi-turn combination), with positioning accuracy of ±5 arc seconds, supporting dual protocols of Profinet/EtherCAT compatibility

Core features
High precision control: Utilizing advanced control algorithms and 23-bit encoders, it achieves positioning accuracy of sub-arc-second level. For example, the rotation stage of a CNC machine can reach a precision of 0.001°, eliminating transmission gaps and enhancing the surface quality and repeatability of the processed parts.
Fast response: The electronic commutation technology and low inertia design give the motor an acceleration time of less than 50ms, suitable for high-frequency start-stop scenarios (such as lithium battery slicing and packaging machinery), increasing production cycle efficiency by more than 20%.
High reliability: The rare earth permanent magnets and optimized magnetic circuit design support a wide speed regulation range and high dynamic response. Integrated with thermal resistors and over-temperature protection functions, it is suitable for dusty, humid, and high-temperature conditions (such as metallurgical and chemical equipment).
Strong environmental adaptability: IP65 protection, wide temperature range, and anti-pollution design (such as shaft sealing ring + dust cover), modular structure supports rapid maintenance (such as stator winding replacement), reducing downtime costs.
Intelligent integration: Supports bus interface to collect multi-dimensional data such as motor temperature, vibration, and current, and combines with the Yaskawa IndraWorks software to achieve predictive maintenance (such as fault warning, parameter optimization).

Application scenario
The VEP40.3CEN-256NN-MAD-128-NN-FW servo motor is applicable to various industrial automation fields, including but not limited to:
CNC machine tools: Provide high-precision position control and speed control to ensure the machining accuracy and efficiency of the machine.
Robotics field: Drive the robot joints for rapid and precise motion control to meet the high-precision and high-dynamic response requirements of robots.
Packaging machinery: Achieve precise packaging action control to improve packaging efficiency and quality.
Printing machinery: Used for the drive system of printing machines to ensure high-speed and high-precision motion control during the printing process.
Textile machinery: Achieve precise fabric conveying and processing control to improve production efficiency and product quality.
Automated production lines: Applicable to the drive and control of various automated production lines to achieve automation and intelligence in the production process.

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