June 02, 2026

4PP351.0571-01 Industrial Servo Drive Product Description

The 4PP351.0571-01 is a high-performance compact servo drive developed by B&R, designed for precise motion control in medium and small industrial automation equipment. It belongs to B&R’s integrated motion control product line, featuring a compact metal housing, fanless cooling design and industrial-grade protection level, which can adapt to complex workshop environments with dust, humidity and mechanical vibration. This drive integrates power drive unit, position/speed/torque control loop, signal processing module and multi-protocol communication interface, supporting seamless matching with B&R servo motors and third-party standard servo motors. It is widely used in automated assembly lines, packaging machinery, textile equipment, electronic processing machines, small CNC machine tools and other scenarios requiring high-precision positioning and stable speed regulation. The standard delivery cycle for brand-new original units is 6 weeks upon order confirmation and advance payment.

Description

4PP351.0571-01 Industrial Servo Drive Product Description

Product Overview

Basic Information

Manufactured in compliance with IEC international industrial standards and B&R global quality management system, the 4PP351.0571-01 adopts full industrial-grade power devices, control chips and passive components, and undergoes 72-hour continuous aging test and full-function calibration before delivery. The overall structure adopts a sealed metal casing with high mechanical strength, which effectively resists impact and vibration. The front panel meets IP40 protection standard and the internal circuit area reaches IP20, ensuring safe and stable operation inside standard control cabinets.

In terms of power supply specifications, the drive supports single-phase or three-phase AC input with a rated voltage of 230 VAC and a wide voltage fluctuation range of 180 VAC to 264 VAC, adapting to unstable power supply conditions on industrial sites. The rated output current is matched with medium and small servo motors, and the built-in intelligent power module has low heat generation and high conversion efficiency. The whole machine adopts a fully fanless passive heat dissipation structure, eliminating mechanical noise and dust accumulation caused by cooling fans, and greatly extending the service life of the equipment.

For hardware configuration, the device is equipped with a dedicated motion control processor, which can independently operate three closed-loop control systems: position loop, speed loop and torque loop. The onboard high-speed logic circuit can process encoder feedback signals in real time to form a closed-loop control system. It is equipped with a hardware watchdog circuit and power-off protection mechanism. The built-in energy storage capacitor can complete data backup and safe shutdown during instantaneous power failure, preventing parameter loss and equipment damage. The integrated digital input and output terminals support multi-channel switch signal reception and execution command output, which can be linked with peripheral sensors, limit switches and electromagnetic valves.

In terms of communication configuration, the drive is equipped with an Ethernet interface and a standard serial communication interface, supporting mainstream industrial communication protocols. It can realize real-time data interaction and parameter configuration with upper PLC, HMI and industrial computers. Multiple status indicator LEDs are arranged on the panel to display power supply, operation, fault and communication status in real time, facilitating on-site inspection and maintenance. The overall dimension is compact, and the standard guide rail installation or embedded cabinet installation is supported. The gross weight of the single unit is about 2.8 kg, which is convenient for handling and installation. The standard package only includes the servo drive main unit. Power cables, motor cables, encoder cables, wiring terminals and installation accessories need to be purchased separately. Programming and parameter debugging are completed via B&R Automation Studio software platform.

Function and Positioning

Positioned as a general-purpose medium and small power servo drive, the 4PP351.0571-01 focuses on high-precision, high-stability and high-response motion control, and can be used as the core power and control unit in independent motion axes or multi-axis linkage systems. It supports three mainstream control modes: position control, speed control and torque control, which can be switched freely according to process requirements to meet the control needs of different working conditions.

In position control mode, the drive receives pulse or bus position commands from the upper controller, and drives the servo motor to achieve accurate positioning. It features high positioning accuracy, small repeat positioning error and fast response speed, which is suitable for positioning stations, material handling and precision machining scenarios. In speed control mode, it can realize stepless speed regulation with stable operation and small speed fluctuation, applicable to continuous rotating equipment such as conveyor belts and winding machines. In torque control mode, it maintains constant output torque, which is used for tension control and pressure matching in winding, unwinding and assembly processes.

The built-in advanced control algorithm has strong anti-interference ability and load adaptability. It can automatically suppress vibration and overshoot during start-up, stop and speed change, ensuring smooth equipment operation. The drive integrates multiple safety protection functions, including overvoltage, undervoltage, overcurrent, overload, overheating, motor phase loss and encoder fault protection. Once an abnormal condition occurs, it will immediately trigger protection action and feed back fault codes through the interface and indicator lights, helping maintenance personnel quickly locate and solve problems.

With rich expansion and interconnection capabilities, this servo drive can form a multi-axis linkage system with multiple drives through the communication bus, realizing synchronous operation of multiple axes. It can be perfectly connected with B&R series PLC and HMI to build a complete integrated automation solution. Meanwhile, it is compatible with most standard servo motors on the market, with flexible matching and wide application range. The compact design saves cabinet space, and the standardized installation and wiring mode reduces the difficulty of on-site construction and later maintenance. It is applicable to both new equipment configuration and old production line renovation and upgrading.

Core Performance Parameters

For electrical performance, the rated input voltage is 230 VAC, with an allowable voltage range of 180 VAC to 264 VAC. The input frequency is 50 Hz/60 Hz. The drive has high power conversion efficiency and low no-load power consumption. The built-in power module has excellent current output capability and dynamic response, which can cope with instantaneous load impact. The full machine adopts passive heat dissipation, with no noise during operation. It is equipped with complete electrical protection circuits to avoid equipment damage caused by abnormal power supply and load faults.

For motion control performance, the position control accuracy and speed regulation range reach industrial high standards. The response speed of the control loop is fast, which can quickly track command changes. The system has small positioning error and speed fluctuation, and can maintain stable control under variable load conditions. The supported encoder types include incremental encoder and absolute encoder, which can collect motor operation data in real time to form a high-precision closed-loop control. The maximum pulse input frequency meets the requirements of high-speed positioning, and supports various pulse input formats to adapt to different upper control devices.

For environmental adaptability, the rated working ambient temperature ranges from 0°C to +55°C. The storage and transportation temperature is from -25°C to +70°C. It can operate reliably under 10% to 90% non-condensing relative humidity. The product has passed industrial vibration and impact tests, and can resist conventional mechanical vibration on site. The internal PCB is coated with three-proof paint, which has good dustproof, moisture-proof and anti-corrosion capabilities. The sealed housing structure reduces the erosion of dust, oil mist and water vapor in the workshop, ensuring long-term stable operation in harsh industrial environments.

General Matching Accessories

Dedicated installation brackets, guide rail fixing pieces and fastening bolts are standard matching accessories, which can firmly fix the drive inside the control cabinet and prevent loosening caused by vibration. Professional insulating gaskets are recommended to be added during installation to enhance electrical safety and heat dissipation effect.

Power connection terminals, motor wiring terminals and signal terminals are essential accessories and need to be ordered separately. Screw-type and spring-cage terminal blocks are optional to adapt to different on-site wiring habits. Original shielded power cables, motor cables and encoder cables are special matching accessories. The multi-layer shielding structure inside the cables can effectively suppress electromagnetic interference, ensure stable signal and power transmission, and avoid communication interruption and control deviation caused by interference. It is not recommended to use non-shielded cables for connection.

External brake resistors are optional accessories, which need to be equipped according to the actual load and operating speed. They are used to consume regenerative electric energy generated during motor deceleration and stopping, so as to avoid overvoltage of the DC bus and protect the drive. Waterproof cable glands and sealed connectors are used for cable inlets and outlets of the cabinet, which can improve the overall sealing performance and prevent dust and moisture from entering.

Daily maintenance accessories include anti-static cleaning tools and neutral cleaning agents, which are used to regularly clean the dust on the surface of the drive and wiring area. It is forbidden to use corrosive liquids and sharp tools to contact the circuit and casing. It is advised to reserve the same model of drives and vulnerable cables as spare parts for emergency replacement during equipment maintenance. All supporting accessories comply with B&R unified industrial specifications, with reliable quality and consistent compatibility.

Applicable Equipment and Fields

The 4PP351.0571-01 servo drive is a core component of B&R’s medium and small power motion control series, and can be used as a replacement part for maintenance of the same type of drive. It is widely applied in various industrial automation fields that require precise motion control, including automated production lines, packaging machinery, food and beverage processing equipment, textile and printing machinery, electronic assembly equipment, small precision machine tools, logistics handling equipment and light industrial process control systems.

This drive is especially suitable for single-axis or multi-axis linkage occasions with medium and small load, compact installation space and high control precision requirements. When matched with B&R servo motors, PLC and HMI, it can form a complete set of automation control system, which is adapted to conventional workshop environments with moderate dust, normal humidity and slight vibration. Whether it is a newly developed automated equipment project or the performance upgrade and fault replacement of old equipment, this servo drive can provide stable and efficient motion control support, effectively improving the operating efficiency, positioning accuracy and overall automation level of the equipment.

Certification and Quality Description

The 4PP351.0571-01 servo drive is produced in strict accordance with B&R’s full-process quality control system and international electrical safety standards. All links such as component procurement, PCB welding, module assembly, program burning, function debugging and finished product testing adopt standardized operation procedures. Core power components, control chips and communication modules are all supplied by certified industrial-grade suppliers to ensure the inherent quality of products.

Batch sampling tests cover high and low temperature cycle test, vibration durability test, long-term load operation test and EMC electromagnetic compatibility test. Each finished product must pass full-item inspections including electrical performance test, control accuracy test, communication test and protection function test before leaving the factory. The product has obtained EU CE certification and complies with RoHS environmental protection directives, containing no harmful substances, and can be legally used in most countries and regions around the world.

With mature anti-interference, anti-aging and three-proof design, the drive maintains a low failure rate and long service life under rated working conditions. The original manufacturer provides global after-sales technical services, including product technical consultation, on-site installation guidance, wiring instruction, parameter configuration, fault diagnosis and maintenance training. Verified by a large number of on-site applications worldwide, the 4PP351.0571-01 is a stable, reliable and cost-effective servo drive for medium and small industrial automation equipment.

Ordering and Delivery Instructions

The complete order part number is 4PP351.0571-01. The product is a brand-new original servo drive, with a standard 12-month manufacturer’s warranty. The standard delivery period is 6 weeks calculated from the date of formal order confirmation and receipt of advance payment. Customers can apply for urgent production and expedited logistics, which will generate additional urgent service fees.

The standard package only contains the servo drive main unit. All wiring terminals, power cables, motor cables, encoder cables, installation brackets and brake resistors are not included in the package and must be ordered separately, with the same delivery cycle as the main unit. The goods are shipped from the overseas factory via international logistics, with complete customs clearance procedures and trackable whole logistics information. Customers are recommended to confirm the product model, power specification, matching motor model and accessory list through official authorized distributors before placing an order, so as to avoid model mismatch and unnecessary losses.

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