Lichuan 4A DC Open Loop Stepper Motor Drivers Kit EtherCAT 1.6N.m 2 Phase Nema24 DC24V～50V 4.0A

Lichuan DC Open Loop Stepper Motor Drivers Kit – NEMA24 EtherCAT 1.6–4.0 N·m, 2 Phase, DC24–50V, 4.0A

Product Overview

The Lichuan DC Open Loop Stepper Motor Drivers Kit is an EtherCAT-based motion-control solution combining a NEMA24 2-phase stepper motor with a digital open-loop stepper driver for industrial automation, CNC equipment, positioning systems, robotics and machine-building applications.

Available motor torque options include 1.6 N·m, 2.1 N·m, 2.5 N·m, 3.0 N·m, 3.5 N·m and 4.0 N·m, allowing machine builders to select a suitable torque level according to axis load, acceleration, speed and mechanical transmission requirements.

The system is designed for DC24–50V power input and a 4.0A drive configuration, providing a practical solution for applications that require networked stepper motion control without the hardware complexity of a conventional closed-loop feedback system.

With EtherCAT communication, the DC Open Loop Stepper Motor Drivers Kit is intended for distributed multi-axis architectures where machine controllers need centralized communication, synchronized motion commands and reduced point-to-point wiring. Lichuan's EtherCAT bus stepper drivers use digital stepper control algorithms and support EtherCAT-based industrial communication; compatible models support CoE and CiA402 functions.

Key Product Specifications

Lichuan's official EtherCAT open-loop bus-driver products include models using DC24–50V input, EtherCAT communication, digital stepper algorithms, CoE and CiA402 support. Exact voltage, current, dimensions and control functions should be matched to the final driver model supplied with each kit.

Torque Selection

The DC Open Loop Stepper Motor Drivers Kit is available with six NEMA24 torque options:

Actual application suitability depends on required running torque, motor speed, acceleration, inertia, transmission ratio, screw pitch, duty cycle and available torque at the operating speed. Holding torque alone should not be used as the only motor-selection criterion.

What Is a DC Open Loop Stepper Motor Drivers Kit?

A DC Open Loop Stepper Motor Drivers Kit combines a stepper motor and a compatible digital stepper motor driver into a coordinated motion-control solution.

In an open-loop architecture, the controller commands the target movement while the driver controls the motor phase currents and stepping sequence. Unlike a closed-loop stepper system, the standard open-loop configuration does not continuously rely on encoder feedback to correct shaft position.

This architecture is attractive when the machine is designed within the motor's torque-speed capability and the customer prioritizes:

• cost efficiency
• simpler wiring
• straightforward commissioning
• reliable incremental positioning
• compact motion architecture
• EtherCAT network integration

Why Choose an EtherCAT DC Open Loop Stepper Motor Drivers Kit?

Traditional pulse-type stepper systems normally require dedicated pulse and direction wiring from the controller to each drive.

An EtherCAT DC Open Loop Stepper Motor Drivers Kit changes the architecture by allowing motion commands and drive data to travel through an industrial Ethernet network.

A typical system can be arranged as:

EtherCAT Master → Stepper Driver 1 → Stepper Driver 2 → Stepper Driver 3 → Additional Axes

Lichuan's EtherCAT bus stepper-driver family is specifically designed for bus-based motion control, offering simplified field wiring, real-time data communication and multi-axis synchronous control.

Core Product Features

EtherCAT Industrial Communication

The DC Open Loop Stepper Motor Drivers Kit integrates EtherCAT communication for distributed machine architectures and coordinated multi-axis motion.

Compatible Lichuan EtherCAT bus drivers support CoE and CiA402-based drive functions, making them suitable for industrial motion-control applications where standardized EtherCAT communication is required.

NEMA24 2-Phase Stepper Motor

The kit is designed around a NEMA24 2-phase stepper motor platform, offering multiple torque configurations from 1.6 to 4.0 N·m for different machine-axis requirements.

DC24–50V Power Input

The DC Open Loop Stepper Motor Drivers Kit is designed for DC24–50V low-voltage industrial motion systems.

This power range is well suited to machine architectures using 24V, 36V or 48V-class DC power supplies, subject to the exact driver model and electrical design.

4.0A Drive Configuration

The specified kit uses a 4.0A current configuration, intended to provide a practical match for the NEMA24 motor range.

The exact rated current, peak current and current-setting method must be confirmed against the selected driver model.

Digital Open-Loop Control

Digital current control and motor-driving algorithms help provide stable stepper operation while maintaining the straightforward architecture associated with open-loop motion systems.

Lichuan describes its EtherCAT bus stepper drivers as using advanced digital stepper algorithms designed to suppress motor vibration and reduce temperature rise.

Multi-Axis Motion Control

Multiple axes can be connected through an EtherCAT network, making the system suitable for coordinated CNC axes, automation machinery and multi-axis positioning systems.

OEM-Friendly Architecture

The DC Open Loop Stepper Motor Drivers Kit can be standardized across machine platforms, helping OEM customers simplify product development, component sourcing and maintenance.

Product Selling Points

1. Six Torque Options

Choose from 1.6, 2.1, 2.5, 3.0, 3.5 and 4.0 N·m NEMA24 configurations.

2. EtherCAT Connectivity

Industrial EtherCAT communication supports distributed motion-control architectures.

3. Open-Loop Cost Advantage

The absence of encoder feedback hardware can reduce system cost and simplify wiring for applications that do not require closed-loop correction.

4. DC24–50V Operation

Suitable for common low-voltage DC industrial power architectures.

5. 4.0A Drive Configuration

Designed for matching with the NEMA24 torque range offered in this product series.

6. Multi-Axis Scalability

An EtherCAT network makes it easier to build systems with multiple coordinated stepper axes.

7. Easier System Wiring

Bus communication can reduce dedicated control wiring compared with conventional pulse-based multi-axis architectures.

8. Practical Alternative to Servo Systems

For applications that do not require high-speed closed-loop servo performance, the DC Open Loop Stepper Motor Drivers Kit can provide a more economical motion-control architecture.

Product Technology

Digital Stepper Motor Drive Technology

The driver converts incoming motion commands into controlled motor phase excitation.

Digital current regulation helps manage the electrical current supplied to the motor windings and enables the driver to generate the required magnetic field sequence for controlled stepper movement.

EtherCAT Communication Technology

EtherCAT provides a network-based architecture in which the central motion controller communicates with distributed drives across the machine.

Compatible Lichuan EtherCAT bus drivers support CoE communication and CiA402 drive-profile functions. Certain models also support PDO, SDO and EMCY communication objects and multiple standard motion modes.

Open-Loop Motion Architecture

In an open-loop system, the controller sends the commanded movement without using a motor encoder for continuous position correction.

The machine designer therefore needs to ensure:

Load Torque < Available Motor Torque at the Operating Speed

with an appropriate safety margin.

Product Working Principle

The operating principle of the DC Open Loop Stepper Motor Drivers Kit can be understood in six stages.

Stage 1 — Motion Command

The EtherCAT master creates a position, velocity or other supported motion command.

Stage 2 — Network Transmission

The command is transmitted to the selected EtherCAT stepper driver.

Stage 3 — Digital Processing

The stepper driver processes the motion command and determines the required motor excitation sequence.

Stage 4 — Phase Current Control

The driver regulates current through the A-phase and B-phase windings of the 2-phase stepper motor.

Stage 5 — Rotor Movement

The motor rotor moves incrementally as the magnetic field changes according to the commanded sequence.

Stage 6 — Mechanical Output

Motor rotation is transferred to a ball screw, lead screw, timing belt, gearbox, pulley or other mechanical transmission.

EtherCAT Communication Architecture

A common machine structure can be illustrated as:

Industrial PC / PLC / Motion Controller

↓ EtherCAT

NEMA24 Open-Loop Stepper Driver

↓

NEMA24 2-Phase Stepper Motor

↓

Mechanical Axis

For multi-axis systems:

EtherCAT Master

↓
Axis 1
↓
Axis 2
↓
Axis 3
↓
Axis 4 / Additional Axes

Lichuan's official EtherCAT bus stepper-driver documentation describes EtherCAT communication, CoE, CiA402 and multi-axis synchronous control for compatible products.

Motion Control Functions

Depending on the exact EtherCAT driver model, supported motion functions may include:

• Profile Position
• Profile Velocity
• Homing
• Cycle Synchronous Position
• PDO communication
• SDO parameter access
• Emergency communication
• Multi-axis synchronization

These functions should be confirmed against the exact driver model before final machine integration.

Product Applications

CNC Machines

The DC Open Loop Stepper Motor Drivers Kit can be applied to CNC router, engraving, drilling and other automated machine axes where the required torque and speed remain within the motor's capability.

CNC Router

NEMA24 motors with 1.6–4.0 N·m torque options can be considered for X/Y/Z positioning systems, depending on gantry mass, screw pitch, transmission ratio and acceleration requirements.

Laser Cutting and Engraving

The system can provide coordinated positioning for laser-axis mechanisms and automated material movement.

3D Printers

The EtherCAT configuration can be considered for industrial or customized 3D-printing systems requiring networked motion control.

Packaging Machinery

Suitable applications include indexing, feeding, positioning and synchronized mechanical movement.

Pick-and-Place Machines

Multiple EtherCAT-connected axes can coordinate positioning and material-handling operations.

Robotics

The DC Open Loop Stepper Motor Drivers Kit can be used in robotic mechanisms where the required torque, speed and load behavior are predictable.

Semiconductor and Electronics Equipment

Stepper positioning can be used for indexing, alignment and automated handling equipment.

Laboratory Automation

Suitable for controlled linear and rotary positioning functions in laboratory and testing equipment.

General Industrial Automation

The system can be integrated into automatic assembly, inspection, dispensing, handling and material-processing equipment.

Lichuan's product portfolio includes dedicated EtherCAT bus stepper-driver products and separate open-loop motor categories, supporting a broader motion-control ecosystem for automation applications.

Typical Product Uses

The DC Open Loop Stepper Motor Drivers Kit can be used for:

• X/Y/Z axis positioning
• linear motion
• indexing
• feeding
• rotary positioning
• conveyor synchronization
• automatic tool positioning
• material handling
• CNC machine axes
• robotic mechanisms
• inspection equipment
• packaging equipment
• laboratory positioning
• machine automation

Product Parameter Table

How to Select the Right Torque

Selecting the correct DC Open Loop Stepper Motor Drivers Kit should be based on the actual operating requirements rather than holding torque alone.

Consider:

Load

Determine the actual mechanical force or torque required by the axis.

Speed

Stepper motor torque decreases as speed increases. The motor should therefore be evaluated at its actual operating speed.

Acceleration

High acceleration requires additional motor torque.

Inertia

Large rotating or translating loads may require substantially more torque during acceleration.

Transmission

Lead screw pitch, belt ratio, gearbox ratio and pulley diameter influence the required motor torque.

Duty Cycle

Continuous operation and intermittent operation may require different thermal considerations.

Safety Margin

The application should maintain an appropriate torque reserve to reduce the risk of missed steps.

Installation Method

Step 1 — Confirm the Model

Verify the exact NEMA24 torque configuration and driver model before installation.

Step 2 — Mount the Motor

Install the stepper motor on a rigid mechanical bracket with correct shaft alignment.

Step 3 — Mount the Driver

Install the driver in a ventilated electrical cabinet or suitable mounting location.

Step 4 — Connect DC Power

Connect the DC power supply within the specified voltage range of the exact driver.

Step 5 — Connect the Motor

Wire the A-phase and B-phase motor windings according to the manufacturer's wiring diagram.

Step 6 — Connect EtherCAT

Connect the EtherCAT master to the driver using the designated communication interface.

Step 7 — Configure the Drive

Set the required drive parameters and network configuration through the supported controller or configuration software.

Step 8 — Configure Motion Parameters

Set acceleration, deceleration, velocity, position and other machine-specific parameters.

Step 9 — Perform a Low-Speed Test

Run the axis at low speed before increasing the machine to its normal operating condition.

Step 10 — Verify the Full Motion System

Check direction, travel limits, homing, acceleration, thermal behavior and communication status before production operation.

Operating Method

A typical operation sequence is:

Power On

→ Initialize EtherCAT Network

→ Detect Drive

→ Configure Parameters

→ Enable Drive

→ Perform Homing

→ Execute Position / Velocity Command

→ Monitor Operating Status

→ Continue Automatic Operation

For systems using supported CiA402 operating modes, the final commissioning sequence should follow the driver manual and EtherCAT master configuration requirements.

Safety Precautions

Before operating the DC Open Loop Stepper Motor Drivers Kit, observe the following precautions:

1. Confirm the exact driver voltage and current specifications.
2. Disconnect power before changing motor wiring.
3. Do not connect or disconnect motor cables while the driver is energized.
4. Use an appropriately sized DC power supply.
5. Provide sufficient heat dissipation for the driver.
6. Keep the motor within its torque-speed operating envelope.
7. Verify mechanical end limits before automatic operation.
8. Test the system at low speed during commissioning.
9. Use appropriate protective devices in the machine's electrical system.
10. Confirm EtherCAT communication before enabling automatic motion.
11. Do not assume that an open-loop system can automatically detect every mechanical stall or missed step.
12. For safety-critical positioning, evaluate whether a closed-loop stepper or servo architecture is more appropriate.

Open Loop vs Closed Loop Stepper

The DC Open Loop Stepper Motor Drivers Kit is best suited to applications where the motor is correctly sized and the machine is operated within a predictable load and speed range.

Product Advantages for OEM Customers

Standardized Motor and Driver Matching

The NEMA24 platform offers six torque levels, allowing OEMs to standardize the mechanical platform while selecting different output torque configurations.

Lower BOM Complexity

Using a matched DC Open Loop Stepper Motor Drivers Kit can simplify component selection compared with sourcing unrelated motors and drivers.

EtherCAT System Integration

An EtherCAT bus architecture can simplify the control layout of multi-axis equipment.

Easier Machine Platform Expansion

OEM manufacturers can use the same communication architecture across multiple machine models.

Maintenance-Friendly Design

A standardized motor-driver architecture can simplify replacement and maintenance for production equipment.

Global Procurement

The product can be positioned for OEM, ODM, distributor and system-integrator purchasing rather than only single-unit consumer sales.

Product Service

Pre-Sales Engineering Support

We can help customers evaluate the suitable DC Open Loop Stepper Motor Drivers Kit based on:

• required torque
• operating speed
• acceleration
• load
• mechanical transmission
• supply voltage
• controller
• EtherCAT master
• number of axes
• working environment

Product Matching

Customers can provide their motor requirements or machine specifications for configuration recommendations.

EtherCAT Integration Support

Technical support can cover:

• EtherCAT network connection
• drive recognition
• parameter setup
• communication configuration
• motion-mode configuration
• commissioning

OEM / ODM Support

For machine manufacturers and distributors, available customization options may include:

• motor/driver matching
• cable configuration
• labels
• packaging
• documentation
• product branding
• batch configuration

Customization depends on the specific project and production requirements.

Technical Documentation

Lichuan maintains a dedicated documentation and download ecosystem covering:

• Driver Manuals
• Selection Guides
• PDF Drawings
• 3D Drawings
• Software
• Certificates

The official Lichuan download center lists dedicated categories for EtherCAT Bus Stepper Drivers as well as open-loop stepper motors and drivers.

Recommended website download buttons:

Download Datasheet

Download Driver Manual

Download CAD Drawing

Download 3D Model

Download EtherCAT Documentation

View Certificates

Quality Assurance

The DC Open Loop Stepper Motor Drivers Kit should be manufactured and tested through controlled production and inspection procedures covering motor assembly, driver electronics, wiring, communication and functional operation.

A professional quality-control process may include:

Incoming Inspection

Electronic components, magnetic materials, bearings, housings, PCBs and connectors are inspected before production.

Motor Assembly Inspection

Stator winding, rotor assembly, bearing installation and mechanical dimensions are checked.

Driver PCB Inspection

PCB assembly and key electronic components are inspected for workmanship and electrical integrity.

Electrical Testing

Power input, current regulation and protection-related functions are tested according to the applicable model specification.

Communication Testing

EtherCAT communication is checked on compatible EtherCAT models.

Functional Testing

The motor-driver combination is tested for rotation, direction, basic motion and operating condition.

Final Inspection

Final appearance, labeling, packaging and product configuration are checked before shipment.

Do not publish specific inspection percentages, MTBF figures, accuracy values or certification claims unless the exact SKU has supporting documentation.

Product Certificates

Applicable compliance documentation may include certifications such as:

• CE
• RoHS
• ISO9001
• EMC
• LVD
• other applicable product compliance documents

Certification availability should be stated according to the exact motor and driver model, rather than assuming that every certificate applies to every configuration.

Company Introduction

About Lichuan

Lichuan is a motion-control manufacturer focused on stepper motor and servo technology for industrial automation.

Its product portfolio covers multiple motion-control categories, including:

• Open-Loop Stepper Drivers
• Closed-Loop Stepper Drivers
• EtherCAT Bus Stepper Drivers
• RS485 Bus Stepper Drivers
• CANopen Bus Stepper Drivers
• Stepper Motors
• Integrated Motors
• Servo Drivers
• Motion-Control Products

The official Lichuan website maintains separate product and documentation categories for bus drivers, open-loop stepper drivers, stepper motors and related motion-control products.

For OEM and industrial customers, Lichuan's value proposition should focus on motor and driver matching, engineering support, documentation, manufacturing capability and system integration.

FAQ

What is a DC Open Loop Stepper Motor Drivers Kit?

A DC Open Loop Stepper Motor Drivers Kit is a matched stepper motion-control solution consisting of a DC-powered digital open-loop stepper driver and a compatible stepper motor.

What motor is included in this product?

This product is configured for a 2-phase NEMA24 stepper motor.

What torque options are available?

The available motor torque options are:

1.6 / 2.1 / 2.5 / 3.0 / 3.5 / 4.0 N·m

What voltage does the kit use?

The specified product configuration is DC24–50V. The exact allowable range should always be confirmed against the selected driver model.

What is the current rating?

The supplied configuration is specified as 4.0A. Customers should distinguish the configured operating current from any maximum or peak current specification stated in the exact driver manual.

Does the product support EtherCAT?

Yes. The product is positioned as an EtherCAT DC Open Loop Stepper Motor Drivers Kit. Lichuan's compatible EtherCAT bus stepper-driver products support EtherCAT communication, with CoE and CiA402 functions on applicable models.

Is this a closed-loop stepper system?

No. This is an open-loop stepper system and does not normally use encoder feedback for continuous position correction.

What is the advantage of open-loop stepper control?

Open-loop control can provide a simpler and more economical motion architecture, especially when machine loading and speed are predictable.

Can it be used for CNC?

Yes. The DC Open Loop Stepper Motor Drivers Kit can be considered for CNC axes when the selected motor provides sufficient torque at the required operating speed.

Can it be used for a CNC router?

Yes. NEMA24 configurations up to 4.0 N·m can be considered for CNC router axes, subject to actual machine load, speed, transmission and acceleration requirements.

Can multiple axes be connected?

Yes. EtherCAT supports networked multi-axis motion architectures, and compatible Lichuan bus stepper drivers are designed for multi-axis synchronous control.

Does it support CiA402?

Compatible Lichuan EtherCAT bus stepper-driver models support the CiA402 drive profile. Verify the exact model before system integration.

How do I choose between 1.6 N·m and 4.0 N·m?

Select the motor according to actual running torque, speed, acceleration, load inertia and mechanical transmission. Higher holding torque does not automatically mean better performance for every application.

Is an encoder included?

Not in the standard open-loop architecture.

Can I use it for robotics?

Yes, for robotic mechanisms where the required load, speed and positioning performance are compatible with open-loop stepper control.

Can I use 24V, 36V or 48V power?

The product is specified for DC24–50V, but the exact operating limits and recommended power supply should be confirmed for the selected driver model.

Can the product be customized for OEM projects?

OEM customization may be available for selected configurations, including motor-driver matching, cables, labels, packaging and project-specific requirements.

Can I get CAD drawings and manuals?

Lichuan provides technical documentation resources including manuals, drawings, 3D data, software and certificates through its official download system.

Why Buy from Lichuan?

Choosing the right DC Open Loop Stepper Motor Drivers Kit is not only about motor torque. Industrial buyers also need reliable product matching, technical documentation, communication compatibility and long-term supply capability.

Lichuan's product ecosystem covers open-loop stepper drivers, EtherCAT bus drivers, stepper motors, closed-loop systems and servo products, allowing machine builders to select different motion-control technologies within one broader product portfolio.

For B2B customers, the goal is to provide a complete engineering-oriented solution:

Motor Selection → Driver Matching → EtherCAT Integration → Testing → Documentation → Production → Technical Support

Quality & Customer Support

We support customers throughout the project lifecycle.

Before Purchase

Application analysis

Motor selection

Torque recommendation

Driver matching

EtherCAT compatibility evaluation

During Development

Wiring support

Parameter configuration

Controller integration

Machine commissioning

During Production

Batch consistency

Product inspection

Packaging

Documentation

After Delivery

Technical support

Troubleshooting

Replacement guidance

Application consultation

Request a Quote

Build Your Next EtherCAT Motion System with Lichuan

Looking for a DC Open Loop Stepper Motor Drivers Kit for CNC, industrial automation, robotics or custom machinery?

Send us your:

Required Torque + Operating Speed + Load + Supply Voltage + EtherCAT Controller + Number of Axes + Application

Our engineering team can help you evaluate the appropriate NEMA24 2-phase stepper motor and EtherCAT driver configuration.

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