The LK220 series PLC combines the advantages of traditional PLCs in standardization, integration, and openness, as well as the powerful functions of DCS in complex process control. To ensure stable operation in harsh environments, the LK220 series adopts high-quality industrial-grade chips and professional design. Its operating temperature range is from -20°C to 70°C, and the storage temperature range reaches -40°C to 80°C. All boards are coated with conformal coating, which effectively prevents damage from moisture, salt spray, and mold, further enhancing the durability and reliability of the product.
| Technical Indicators |
LK220 |
| Operation Speed |
Main Frequency of Controller Module |
Dual-core, 600MHz |
| Instruction Execution Time |
Bitwise Operation |
15ns |
| Integer Operation |
15ns |
| Floating-point Operation |
25ns |
| Memory |
Integrated Storage Area (Program + Data) |
24MB |
| Data Power-down Retention Storage Area |
Area R:64KB; |
| Area M: 14KB |
| Integrated Ethernet |
Dual network port redundancy, 10M/100M/1000M, supporting Modbus TCP protocol and HolliTCP_Master protocol (LK216 does not support HolliTCP_Master protocol) |
| Communication Connection Resources |
Modbus TCP |
Maximum number of simultaneous master and slave connections: |
| 16 |
| Profibus-DP |
Maximum 124 slave stations |
| Ethernet Free Protocol |
Up to 16 connections, with a maximum of 8K bytes of data that can be sent and received per connection at a time |
| Communication Module Configuration Scale |
LK241 POWERLINK Master Communication Module |
1 |
| LK246 Ethernet Communication Processing Module |
2 |
| Configuration Capacity |
Input Variable Area (Area I) |
Maximum space of 32KB |
| Output Variable Area (Area Q) |
Maximum space of 32KB |
| Global Variable Area (Area N) |
1MB |
| Free Variable Area (Area M) |
1MB |
Fixed transportatio
1.Water Industry - Water Treatment Plant
We provide tailor-made integrated solutions for various water treatment plants, covering intelligent integrated instruments, frequency converters, PLC control systems, SCADA software, and smart management software, fully meeting the needs of users with different scales and requirements. From the intelligent upgrade of instruments to the full automation of control, and then to the in-depth intelligence of management, we help users build efficient, stable, and unmanned high-quality water plants. For the renovation of old systems and users' capacity expansion needs, our control system, with its strong protocol compatibility, can easily achieve seamless integration with the original system, ensuring the perfect integration of new and old systems and forming an integrated intelligent management system.
2.Port Industry - Container Terminal
In container terminals, quay cranes (QCs) and rubber-tired gantry cranes (RTGs) serve as core handling equipment. The stability and reliability of their control systems directly impact the overall efficiency and safety of the terminal. Additionally, port cranes have high requirements for the computing power and network communication capabilities of their control systems. The Hollysys LK series PLCs can provide safe and reliable single-machine electrical control and remote automation systems for container cranes. This series of PLCs has been successfully applied in quay cranes and rail-mounted gantry cranes (RMGs) at multiple ports such as Qingdao Port and Shanghai Port, successfully offering port customers a high-quality localized replacement solution for electrical control systems. Through practical comparisons, the handling efficiency of quay cranes and rail-mounted gantry cranes equipped with Hollysys PLCs has reached or even surpassed that of similar equipment using foreign PLCs.
Hollysys was founded in 1993 and has grown into a leading global provider of intelligent system solutions. With its headquarters in Beijing, the company has established R&D, production and service bases in Hangzhou, Xi'an and Singapore, and set up branches or offices in dozens of key cities across China as well as in India, Malaysia, Indonesia and other regions.
Since its establishment, Hollysys has been committed to independent innovation and R&D, providing customers with customized overall solutions, stable and reliable products, and full-life-cycle services to help them enhance market competitiveness. Hollysys' business consists of three major segments: industrial intelligence, transportation intelligence, and food & pharmaceutical intelligence, covering key industries related to national economy and people's livelihood
Hollysys boasts over ten R&D or simulation test centers covering thermal power, nuclear power, petrochemicals, rail transit, and other fields. Among them, the Hollysys Reliability Test Center has obtained ISO/IEC 17025 laboratory certification from TÜV (German Technical Inspection Association), making it the first reliability test center in China's automation industry to receive TÜV certification. Hollysys' automation product factories have implemented lean, automated, and information-based management, with production capacity reaching the advanced level in the automation sector.
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