Understanding Delta PLC Controllers

Delta PLC controllers are designed to automate industrial processes by receiving input signals from sensors and other devices, processing these signals according to a user-defined program, and then generating output signals to control actuators, motors, and other equipment. These controllers offer reliability, flexibility, and scalability, making them suitable for a wide range of applications, from simple machine control to complex manufacturing automation systems.

DVP Series: Compact and Versatile

The DVP series represents Delta's most popular and widely used line of PLC controllers. Known for their compact size, cost-effectiveness, and ease of use, DVP series PLCs are ideal for small to medium-sized automation applications. They offer a variety of models with different I/O configurations and processing capabilities to suit diverse needs.

Key Features of DVP Series PLCs

• Compact Design: Space-saving design for easy integration into control panels.
• Cost-Effective: Competitive pricing makes them an excellent choice for budget-conscious projects.
• Versatile I/O Options: Available with a range of digital and analog I/O modules.
• High-Speed Processing: Fast processing speeds ensure responsive control of automated processes.
• Easy Programming: Supported by WPLSoft programming software, which offers a user-friendly interface and comprehensive instruction set.

DVP Series Models

The DVP series includes several sub-series, each with its own specific features and capabilities. Some of the most popular DVP series models include:

• DVP-ES2: Entry-level model for basic control applications.
• DVP-SA2: Advanced model with enhanced communication capabilities.
• DVP-SX2: Model with built-in analog I/O for temperature and pressure control.
• DVP-SE: Ethernet-enabled model for network-based control systems.
• DVP-EH3: High-performance model for demanding applications.

AS Series: Mid-Range and Modular

The AS series represents Delta's mid-range PLC offering, characterized by its modular design and enhanced capabilities. AS series PLCs are well-suited for more complex automation applications that require a flexible and scalable architecture. They support a wide range of I/O modules and communication protocols, allowing for seamless integration with other industrial devices.

Key Features of AS Series PLCs

• Modular Design: Allows for easy expansion and customization of the PLC system.
• High-Speed Backplane: Ensures fast communication between the CPU and I/O modules.
• Advanced Communication: Supports a variety of communication protocols, including Ethernet/IP, Modbus TCP, and CANopen.
• Powerful Programming: Supported by ISPSoft programming software, which offers advanced features such as function block programming and online debugging.
• Redundancy Options: Some models offer redundancy features to increase system reliability.

AS Series Models

• AS228T-A: Standard model with a wide range of I/O options.
• AS332T-A: High-performance model with increased processing power.
• AS332ST-A: Slim type model for space-constrained applications.

AH Series: High-End and Advanced

The AH series represents Delta's high-end PLC offering, designed for complex and demanding automation applications. AH series PLCs offer exceptional processing power, advanced communication capabilities, and a wide range of specialized modules, making them suitable for applications such as motion control, process control, and robotics.

Key Features of AH Series PLCs

• High-Performance CPU: Powerful processors for demanding applications.
• Large Program Memory: Allows for complex and extensive control programs.
• Advanced Motion Control: Supports advanced motion control functions, such as electronic camming and gear synchronization.
• Redundant Power Supplies: Increases system reliability in critical applications.
• Hot-Swappable Modules: Allows for module replacement without interrupting system operation.

Programming Delta PLCs

Delta PLCs are programmed using ladder logic, a graphical programming language that resembles electrical relay circuits. WPLSoft is the primary programming software for the DVP series, while ISPSoft is used for the AS and AH series. Both software packages offer a user-friendly interface and a comprehensive instruction set, allowing engineers to create complex control programs with ease.

Example Ladder Logic Code

// Example Ladder Logic Code for a DVP Series PLC
LD     X0      // Load input X0
OUT    Y0      // Output to Y0

LD     X1      // Load input X1
AND    M0      // AND with internal relay M0
OUT    Y1      // Output to Y1

LD     X2      // Load input X2
SET    M0      // Set internal relay M0

LD     X3      // Load input X3
RST    M0      // Reset internal relay M0