Schleicher Master CPU UCH 2 High Speed PLC

The Schleicher Master CPU UCH 2 is a high-speed programmable logic controller designed for demanding industrial automation applications. The part number 31309242 055 identifies a specific variant of the Master CPU series, known for its fast processing and real-time capabilities. This controller is suitable for motion control, packaging machinery, and machine tools where rapid signal processing is critical. It features a compact construction, robust housing, and can be integrated into Schleicher’s modular I/O system. The CPU supports multiple communication interfaces and can be programmed using Schleicher’s ProPLC software.

Technical Specifications

Processor: 32-bit, fast cycle time (typical < 1 µs). Program memory: 256 KB to 1 MB (model dependent). I/O capacity: up to 1024 digital points. Built-in communication: Ethernet (10/100 Mbps), RS-232, RS-485 (Modbus RTU). Supply voltage: 24 V DC. Dimensions: 100 mm × 85 mm × 60 mm. Weight: 0.4 kg. Operating temperature: -20°C to 60°C. Storage: -40°C to 85°C. Protection: IP20. The CPU includes a real-time clock, battery-backed RAM, and diagnostic LEDs. It is expandable with Schleicher I/O modules.

Key Features

• High-speed processor for fast logic execution

• Built-in Ethernet and serial interfaces

• Modbus RTU/TCP support

• Real-time clock

• Battery-backed memory

• Expandable with local I/O modules

• Compact DIN rail mountable design

Programming and Software

The CPU is programmed using Schleicher ProPLC software (based on CODESYS). Languages: Ladder (LD), Function Block (FBD), Structured Text (ST). The software supports online monitoring, debugging, and simulation. The Ethernet port allows remote access and web-based diagnostics.

Applications

The Master CPU UCH 2 is used in special-purpose machinery, automated assembly lines, test stands, and packaging equipment. Its high speed makes it suitable for applications with high-speed counting, precise timing, and fast response to inputs.

Installation

Mount the CPU on a 35 mm DIN rail. Connect 24V DC power to the terminals. Connect I/O modules to the right of the CPU via the expansion bus. Connect programming cable to the Ethernet or USB port. Use the supplied software to configure and download the program.

Maintenance

Check the battery status LED annually; replace if low. Keep the CPU free from dust. The unit has no user-serviceable parts inside.

Conclusion

The Schleicher Master CPU UCH 2 offers high-speed processing and versatile connectivity in a compact package. It is a reliable choice for automation engineers needing real-time performance in industrial control systems.