MASTER-K Series PLC Compact All In One PLC Controller For Small Automation

The MASTER-K series PLC is a programmable logic controller designed by LS Electric for small-scale standalone machinery applications. Available in two configurations—all-in-one modules and modular units—this series features high-speed processing, comprehensive communication capabilities, and flexible expandability, making it ideal for small-to-medium-sized industrial automation control scenarios.

These compact units integrate CPU, digital I/O, and power supply into a single housing, perfect for space-constrained installations with simplified functionality. Key models include MASTER-K 10S1, 80S, and 120S.

• The 120S series includes Economy Models (10/14/20/30 I/O points, expandable to 70 points) and Standard Models (20/30/40/60 I/O points, expandable to 120 points)

Models include MK200S, MK300S, and MK1000S. These feature card-based power supply, CPU, digital I/O, and special function modules, allowing fully customized system configurations with I/O point ranges from 14 to 1024 points.

• High-speed Processing: Basic instruction execution speeds range from 0.1 to 0.9 μs/step. Economy models achieve minimum 0.4 μs/step, while high-end models (80S/200S/300S/1000S) reach 0.2 μs/step using dedicated algorithm processors
• Program Capacity: Economy models offer 2K steps; high-end models like MK1000S support up to 10K steps
• Special Functions: Built-in 32-bit symbolic high-speed counters (1-phase: 100kpps ×2 + 20kpps ×2; 2-phase: 50kpps ×1 + 10kpps ×1). Standard models include PID control with relay and PRC self-tuning, plus position control functions

• Built-in communication ports: RS232C, RS485, and programming port
• Supports mainstream industrial protocols including Profibus-DP, DeviceNet, Modbus, and Rnet
• Smart I/O support for P-area expansion (P000-P63F)

• Compatible with KGL-WIN programming software for Windows systems
• Online program editing during operation for convenient maintenance
• Comprehensive self-diagnostic functions with detailed error codes
• Multiple debugging methods including command-based execution and breakpoint operation

Recommended Models: MK300S, K7M-DR60U

Used in automotive seat accessory production lines for welding, stamping, and assembly station control. Provides precise robotic arm positioning and real-time workpiece rotation monitoring.

Recommended Models: K7M-DRT60U, MK200S

Ideal for beer filling plants and snack food packaging lines. Mixed output modules control conveyor belts and filling valves while maintaining stable operation in high-humidity environments.

Recommended Models: K7M-DR30UE, MK1000S

Controls sorting belt conveyors and automated storage/retrieval systems. Compact design saves space while supporting massive I/O expansion for large-scale logistics operations.

Recommended Models: K7M-DR10UE, MK200S

Manages central air conditioning systems and elevator leveling control. Low power consumption meets building energy-saving requirements with reliable performance.

Recommended Models: K7M-DT60S, MK300S

Controls loom warp beam feeding and printing production lines. High-speed processing and anti-electromagnetic interference design ensure reliable operation in motor-intensive environments.