Frequency Converter with Built-in PLC Function

Deyan Electric is a China manufacturer specializing in industrial automation control solutions. The Frequency Converter with Built-in PLC Function is developed for equipment manufacturers and automation engineers who need flexible motor control without adding complex external controllers. Based on LNC860S series technology, this inverter integrates PLC operation, vector control, RS485 communication, and multiple frequency adjustment methods to support intelligent equipment design. With a power range from 0.75KW to 750KW, it provides a practical solution for different industrial applications.

Simplify Machine Control

In modern automation equipment, motor control is often connected with multiple actions, speed changes, timing processes, and operating sequences. Traditional solutions may require additional controllers and complicated wiring, increasing system design difficulty and maintenance requirements.

Deyan Electric develops inverter products to help solve these challenges. The Frequency Converter with Built-in PLC Function combines motor drive and simple programmable control functions in one device, allowing equipment manufacturers to create more compact and efficient control systems.

Reduce Control System Complexity

For machine builders, reducing unnecessary components can improve cabinet design efficiency and simplify installation work. The built-in PLC function allows certain automatic control processes to be completed directly through the inverter, reducing dependence on additional control devices in suitable applications.

This design is especially useful for equipment requiring repeated operating sequences, multiple speed levels, or simple automated processes.

Main benefits include:

1. Simplified wiring between motor control and operation processes.

2. Easier parameter adjustment during equipment commissioning.

3. More flexible solutions for different machine structures.

Built-in PLC Capability

The main value of an integrated PLC function is not replacing complex industrial controllers in every situation, but providing a convenient control option for equipment that requires basic programmable operation. This helps customers optimize system design according to actual application needs.

The LNC860S series supports built-in PLC operation with up to 16-speed control. Users can configure different operating stages according to equipment requirements, making the inverter suitable for applications where motors need different running speeds during production processes.

Multi-step Speed Management

Many industrial machines require different speed settings during startup, processing, positioning, and standby stages. Through the built-in PLC function, operators can set multiple speed commands and create more flexible operating processes.

For example, production equipment may require low-speed positioning before operation, higher speed during normal running, and controlled speed reduction before stopping. The integrated control function provides more convenient adjustment possibilities.

Designed For Automation Needs

Automation equipment manufacturers usually need control components that can work together with different input signals, communication systems, and operating methods. The LNC860S series provides multiple control options to support different equipment designs.

The Frequency Converter with Built-in PLC Function supports digital setting, analog setting, PID setting, multi-speed setting, pulse setting, and RS485 communication setting. These functions allow users to select suitable control methods according to machine requirements.

Flexible Signal Processing

The inverter supports various input and output functions, including digital input terminals, analog input channels, pulse input, relay output, analog output, and high-speed pulse output. These interfaces provide flexibility when integrating the inverter into automation systems.

For engineers, this means fewer limitations during machine development and easier adaptation to different production environments.

Stable Motor Performance

While PLC functions improve control flexibility, stable motor operation remains the foundation of inverter performance. The LNC860S series supports open-loop vector control (SVC), closed-loop vector control (FVC), and V/F control modes to meet different motor control requirements.

The inverter provides automatic torque boost and slip compensation functions. Starting torque can reach up to 150% at 0.5Hz, helping motors achieve stronger low-speed performance when equipment requires increased output capability.

Control Accuracy During Operation

Automatic slip compensation helps maintain more accurate motor speed when load conditions change. Combined with adjustable acceleration and deceleration curves, the inverter can support smoother equipment operation and improve production consistency.

Automation Application Range

Different automation machines have different requirements for motor operation. Some systems need simple sequential control, while others require communication, speed switching, and stable operation under changing working conditions. The integrated control functions of the LNC860S series provide more possibilities for equipment development.

The Frequency Converter with Built-in PLC Function can be used in industrial equipment where flexible motor control and simple programmable operation are required. It helps machine manufacturers simplify certain control processes while maintaining reliable motor drive performance.

Common Industrial Scenarios

The inverter can support applications such as:

1. CNC machining equipment requiring stable speed adjustment and process control.

2. Printing and packaging machines requiring repeated operation sequences.

3. Textile equipment requiring different speed stages during production.

4. Lifting and material handling equipment requiring flexible operation control.

5. Automated production equipment requiring communication with upper control systems.

Communication And Integration

For automation projects, communication capability is an important factor when selecting inverter equipment. A suitable communication interface helps connect motor control devices with other automation components and improves overall system management.

RS485 Communication Support

The LNC860S series is equipped with an RS485 communication interface and supports Modbus protocol. This allows the inverter to exchange operating information with compatible industrial control systems and provides convenient options for automation integration.

Through communication functions, users can monitor parameters, adjust settings, and manage inverter operation according to system requirements.

Multiple Frequency Sources

The inverter supports multiple frequency source selection methods, including operation panel settings, analog signals, multi-speed settings, PID control, simple PLC settings, pulse input, and RS485 communication settings.

This flexibility allows engineers to select suitable control methods based on machine structure, production requirements, and automation level.

Technical Information

The following specifications are based on Deyan Electric LNC860S series product information and provide reference data for customers evaluating inverter solutions.

Selection Considerations

Choosing an inverter with integrated control functions requires understanding the actual machine requirements rather than simply selecting by power rating. The motor characteristics, operation process, communication method, and environmental conditions all influence the final selection.

Information For Better Matching

Before purchasing, customers should consider:

1. Motor voltage, power, and rated current requirements.

2. Whether the equipment requires multi-speed operation or programmable sequences.

3. Communication requirements between inverter and control system.

4. Working environment, installation conditions, and protection requirements.

Reliability In Industrial Use

Industrial automation equipment often operates continuously for long periods, making stable operation an important purchasing factor. The LNC860S series includes protection functions and adjustable operating parameters to help improve system reliability.

The inverter supports functions such as automatic voltage regulation (AVR), fast current limiting, frequency hopping, PID control, and multiple acceleration and deceleration modes. These functions help equipment adapt to different operating conditions.

Engineering Support

For automation equipment manufacturers, the inverter is an important part of the complete control system. Product selection, parameter setting, and system matching all influence the final operating performance of the equipment. Deyan Electric focuses on providing practical inverter solutions for different industrial requirements.

The Frequency Converter with Built-in PLC Function is designed to help customers simplify equipment control structures while maintaining reliable motor drive performance. By combining drive functions and programmable control capabilities, it provides a flexible option for machines requiring compact and efficient control solutions.

Support For Equipment Development

During equipment development, engineers may need to evaluate motor specifications, control methods, communication requirements, and application conditions. Deyan Electric provides product information and technical communication support to help customers better understand inverter functions and select suitable configurations.

This approach helps machine builders improve development efficiency and create control systems that match their actual production requirements.

FAQ About PLC Inverter Selection

Q: What is the advantage of an inverter with built-in PLC function?

A: An inverter with built-in PLC function combines motor drive and simple programmable control functions in one device. For suitable applications, it can reduce the need for additional controllers, simplify wiring, and provide a more convenient solution for machines requiring sequence control or multi-speed operation.

Q: Can this inverter replace all external PLC systems?

A: The built-in PLC function is designed for applications requiring simple programmable operations, such as multi-step speed control and basic process sequences. For complex automation systems requiring advanced control functions, an external PLC may still be required according to project requirements.

Q: How many speed levels can the built-in PLC support?

A: The LNC860S series supports up to 16-speed operation through the built-in PLC or control terminals. This function allows users to configure different running speeds according to equipment operation requirements.

Q: What communication functions are available?

A: The inverter is equipped with an RS485 communication interface and supports Modbus protocol. This allows communication with compatible automation systems for parameter adjustment and operation management.

Q: What industries can use this type of inverter?

A: This type of inverter can be applied in various industrial fields, including CNC machining centers, printing and packaging equipment, textile equipment, lifting equipment, metal product processing equipment, petrochemical applications, and other automation scenarios requiring flexible motor control.

Q: What factors should be considered before purchasing?

A: Customers should consider motor power, voltage, load characteristics, required control functions, communication requirements, and installation environment. Providing these details helps ensure better matching between the inverter and the application.

Final Summary

As industrial equipment becomes more automated, manufacturers increasingly require control components that provide both reliable motor operation and flexible system configuration. Deyan Electric develops inverter solutions according to practical industrial needs, helping customers improve equipment design efficiency and operation stability.

The Frequency Converter with Built-in PLC Function integrates drive technology, programmable operation, communication capability, and protection functions into one industrial control solution. It is suitable for equipment manufacturers and automation users looking for a flexible way to manage motor operation and simplify control system design.

With vector control modes, multi-speed operation support, RS485 communication, and a wide power range, the LNC860S series provides adaptable options for different industrial applications. Deyan Electric continues to support customers with reliable products and technical communication for long-term cooperation.