The HollySys LX CU400 Compact PLC delivers high-speed deterministic execution and multi-axis motion capabilities for precise automation tasks. Engineered with an open architecture and robust communication interfaces, it optimizes control cabinet footprints while ensuring seamless interoperability across modern industrial networks.
Modern industrial automation demands high processing speeds and compact designs to prevent cabinet space constraints and communication bottlenecks in multi-axis machinery. The HollySys LX-CU400 series addresses these challenges by integrating advanced multi-core processors, high-speed EtherCAT master capabilities, and support for standard programming languages like IEC61131-3. Its architecture allows engineers to manage complex logic and synchronized motion control simultaneously without sacrificing scan time performance. The controller minimizes wiring complexity and integrates natively with third-party automation components, ensuring high availability and predictable response times in automated manufacturing environments.
Technical Specifications
Bit Instruction Execution Time: 3 ns @ Standard Operating Conditions
User Program Memory: 3 MB @ Nominal Load
Input Variables I Area: 128 KB @ Maximum Configuration
Output Variables Q Area: 128 KB @ Maximum Configuration
Global Variables M Area: 4 MB @ System RAM
Global Variables N Area: 3 MB @ User Storage
Power Down Retention R Area: 256 KB @ Battery-free Backup
Ethernet Interface: 2 x RJ45 @ 10/100/1000 Mbps Adaptive
Modbus TCP Master Capacity: 32 Slaves @ Maximum Network Load
Modbus TCP Slave Capacity: 32 Masters @ Maximum Network Load
EtherNet IP Master Capacity: 64 Connections @ Active Polling
EtherCAT Bus Cycle: 1 ms @ Minimum Interval
EtherCAT Slave Support: 128 Units @ Maximum Topology
EtherCAT Servo Axes: 16 Axes @ 1 ms Update Rate
Total Supported Motion Axes: 64 Axes @ Virtual and Bus Combined
System Side Output Current: 1.5 A @ 24 VDC
Field Side Output Current: 10 A @ 24 VDC
System Power Consumption: 7 W @ Maximum Load
Physical Dimensions: 56 x 109 x 90 mm @ Width x Height x Depth
System Integration and Hardware Setup
Proper mechanical and electrical installation ensures signal integrity and reliable operation of the LX-CU400 compact controller within industrial control panels. Mount the controller on standard 35 mm DIN rails, ensuring adequate vertical clearance for thermal dissipation around the 56 mm enclosure profile. Shielded twisted-pair cables should be used for all Ethernet and serial communication links to mitigate electromagnetic interference from nearby variable frequency drives and high-power actuators. Ground the controller chassis directly to the backplane mounting plate using low-impedance copper bonding straps to eliminate ground loops and protect sensitive logic circuits from transient voltage spikes.
Reliability and Environmental Durability
The controller incorporates industrial-grade thermal and electrical protections designed for continuous operation in harsh factory environments. Heat dissipation is achieved through passive convection across the compact housing, maintaining internal component temperatures within safe thresholds at a maximum system power consumption of 7 W. Non-volatile memory technologies eliminate the maintenance overhead associated with physical backup batteries, securing user programs and data logs against unexpected power loss. Strict adherence to electromagnetic compatibility standards ensures resistance to radiated and conducted noise, maximizing Mean Time Between Failures across automated production lines.
Selection Guidance and Alternative Options
Selecting the appropriate variant depends on specific motion axis requirements, communication redundancy needs, and safety integration levels within the target machine architecture. The LX-CU430 model serves standard multi-axis applications requiring high-speed logic processing and comprehensive protocol connectivity without dedicated functional safety expansions. For machinery requiring integrated safety functions, the LX-CU433 model provides extended hardware support for safety modules and hot-connection capabilities. Beijing Zhongping Technology offers expert technical consultation and local inventory support to assist engineering teams with cross-reference selection and seamless model replacements.
Frequently Asked Questions (FAQ)
1. What is the minimum EtherCAT bus cycle time supported by the LX-CU400 series?
The minimum EtherCAT bus cycle time is 1 ms, which ensures high-speed data transmission and synchronized motion control for up to 16 servo axes.
2. Does the controller support standard programming languages?
Yes, it supports standard IEC61131-3 programming languages alongside C and Cplusplus high-level programming for flexible application development.
3. What is the maximum number of EtherCAT slaves supported?
The controller supports up to 128 EtherCAT slave devices connected across the network topology.
4. How is user program data retained during power loss?
User data and retain variables are stored in dedicated non-volatile memory areas (R Area up to 256 KB) without requiring physical backup batteries.
5. What communication protocols are available on the onboard Ethernet ports?
The dual RJ45 ports support TCP/IP free protocol, Modbus TCP, EtherNet/IP, and HLINK communication standards.
6. Are there differences in functional safety between LX-CU430 and LX-CU433?
Yes, the LX-CU430 does not support extended functional safety modules, whereas the LX-CU433 supports advanced functional safety integration.
7. What is the physical dimension of the compact controller?
The dimensions are 56 mm in width, 109 mm in height, and 90 mm in depth.
8. What shipping lead times and warranty terms apply to orders placed through Beijing Zhongping Technology?
Orders benefit from localized inventory stock routing, rigorous pre-dispatch testing, and a comprehensive standard 12-month industrial warranty policy.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
