The akYtec PR205 is a compact, DIN rail-mountable programmable logic controller (PLC) that integrates a 2.4-inch IPS color graphic display, effectively combining the functions of a PLC and an HMI in a single device. This all-in-one design reduces hardware requirements, simplifies installation, and lowers system complexity, making it an ideal solution for industrial process control, building automation, and HVAC applications.

Integrated HMI with Graphic Display

The PR205 features a high-resolution 2.4" IPS color graphic display (320×240 pixels, 65,535 colors) with 6 freely configurable mechanical buttons. This allows operators to visualize process values in real time, monitor system status, and adjust parameters directly on the device without requiring an external operator panel. The 5 LEDs (3 system status, 2 user-customizable) provide additional visual feedback.

Comprehensive I/O Configuration

The controller offers a versatile mix of analog and digital I/O suitable for a wide range of applications:

• Digital Inputs: 6 standard 24 VDC inputs, plus 2 fast digital inputs (counter mode, up to 100 kHz)
• Digital Outputs: Available in two configurations: 6 relay outputs + 2 transistor outputs, or 8 relay outputs
• Analog Inputs: 4 universal inputs supporting PT1000, NTC/PTC, 0-10 V, 4-20 mA, and resistive signals
• Analog Outputs: 3 universal outputs (0-10 V or 4-20 mA)
• Expandability: Up to 2 PRM expansion modules can be connected to increase I/O count

Robust Communication Capabilities

The PR205 provides multiple communication interfaces for seamless integration into industrial networks:

• Ethernet (10/100 Mbps): Supports Modbus TCP master/slave, direct access to akYtec Cloud service, and connection to PC for programming and SCADA visualization
• 2× RS-485: Independent ports supporting Modbus RTU/ASCII master/slave for integration with SCADA systems, operator panels, and external devices (VFDs, sensors)
• microUSB: For local programming and configuration

Programming & Software

The PR205 is programmed using the free akYtec ALP software, which complies with the IEC 61131-3 standard. The intuitive development environment supports Function Block Diagram (FBD) and Structured Text (ST) programming languages, enabling engineers to implement complex logic and control strategies. Program loading and configuration can be performed via microUSB, Ethernet, or RS-485.

Technical Specifications

• Power Supply: 24 VDC (range 20-36 VDC), max power consumption 8 W
• Operating Temperature: -20°C to +55°C (storage: -25°C to +55°C)
• Humidity: Up to 80% RH (non-condensing)
• Protection Rating: IP20
• Dimensions (W×H×D): 123 × 108 × 58 mm
• Weight: Approximately 350 g
• Certifications: CE

Applications

The PR205 is suitable for a wide range of automation tasks in both industrial processes and building technology:

• Building automation (HVAC, ventilation, heating, air conditioning systems)
• Industrial process control (autoclaves, temperature control, pressure monitoring)
• Poultry farm microclimate control
• Chiller and cooling equipment control
• Remote monitoring via akYtec Cloud service