D4-440DC-2 | Automation Direct 125VDC Koyo PLC CPU DL405 DirectLOGIC 405

Description 

Technical Specifications

Information About D4-440DC-2

The D4-440DC-2 is a central processing unit (CPU) module designed by Automation Direct (Facts Engineering, Koyo) for use in the DirectLOGIC 405 (DL405) series of programmable logic controllers (PLCs). This CPU module serves as the core processing component for controlling and managing various industrial automation tasks, offering reliable performance and flexible communication options within the DL405 system architecture. Operating with an input power range of 90 to 146 VDC, the D4-440DC-2 is suited for a wide range of industrial applications where a 125 VDC supply is used.

One of the key features of the D4-440DC-2 is its capability to execute boolean logic at high speed, providing efficient processing for complex control operations. This performance is essential in environments where quick response times and real-time data processing are required, such as in manufacturing, process control, and material handling. The fast execution speeds ensure that the PLC can handle multiple inputs and outputs, manage feedback loops, and maintain system stability without delays or interruptions.

The D4-440DC-2 is designed to support advanced communication functionality, offering two communication ports for enhanced integration with external devices and systems. Port 1 is an RS232 interface with a 15-pin input, operating at a baud rate of 9600. This port is primarily used for programming connections, enabling the CPU to interface with personal computers, handheld programmers, and operator interfaces. The flexibility of Port 1 allows for easy setup, monitoring, and adjustment of control programs, facilitating efficient system management and troubleshooting.

Port 2 is a dual-mode RS232/422 interface with a 25-pin auxiliary input, offering additional communication capabilities. This port functions as a slave-only communication interface, supporting DirectNET, DirectSOFT, and other operator interface connections. The baud rate for Port 2 is selectable via onboard dipswitches, allowing users to tailor communication speed based on the specific requirements of their application. This configurability enhances the module's adaptability in diverse industrial environments, where different communication protocols and speeds are necessary.

The D4-440DC-2 also features a CPU keyswitch on the front panel, allowing operators to switch between three operational modes: RUN, TERM, and STOP. The RUN mode enables the CPU to execute the loaded control program, TERM allows for communication and diagnostics without halting operations, and STOP halts program execution. This simple yet effective control mechanism provides flexibility in managing the system, making it easy for operators to transition between programming, monitoring, and full system operation.

In terms of memory, the D4-440DC-2 requires an external memory cartridge, as it does not include built-in memory. This external memory is used for storing control programs and system configurations, providing the flexibility to adapt to varying memory requirements based on the complexity of the control system. The ability to use external memory ensures that the CPU can accommodate both small-scale and large-scale automation projects, making it a scalable solution for different industrial environments.

To provide real-time feedback on the system’s operational status, the D4-440DC-2 is equipped with six status indicators on the front panel. These LEDs display information for power (PWR), run status (RUN), CPU health (CPU), battery status (BATT), input/output status (I/O), and communication (COM). The status indicators offer valuable insights into the health and performance of the system, allowing operators to quickly identify any issues that may require attention, such as low battery, communication errors, or system faults. This level of visibility helps ensure the smooth operation of the PLC system and reduces downtime by enabling prompt diagnosis and resolution of issues.

The D4-440DC-2’s robust construction is designed to withstand the demands of industrial environments, where factors such as electrical noise, temperature fluctuations, and physical vibrations can impact system reliability. The module is built to provide stable performance in these conditions, ensuring that it continues to function accurately over time. This durability makes it a dependable choice for use in environments such as factories, power plants, and automated manufacturing lines, where continuous and reliable control is critical.

In addition to its technical features, the D4-440DC-2 is supported by Automation Direct’s comprehensive documentation, including user manuals, installation guides, and programming resources. These materials provide users with detailed instructions on how to configure, program, and operate the CPU module, ensuring that even complex control systems can be set up and maintained with ease.

Overall, the D4-440DC-2 is a versatile and reliable PLC CPU module for the DirectLOGIC 405 series, offering fast boolean execution, flexible communication options, and real-time status monitoring. Its external memory support, dual communication ports, and CPU keyswitch functionality make it suitable for a wide range of industrial automation applications, from small-scale control systems to complex, multi-device networks. By combining high-performance processing with robust design and advanced communication capabilities, the D4-440DC-2 provides a powerful solution for modern industrial control needs.

Manufacturer information

Automation Direct is a well-established supplier of industrial automation and control products. Founded in 1994, the company offers a wide range of cost-effective, user-friendly solutions, including PLCs, HMIs, sensors, and more, catering to diverse automation needs globally.