Operating Characteristics - Power Down / Power Up

Figure 52 - Warm Start Operation

Cold Start

A Cold Start clears the data in battery backed RAM, turns all outputs off, transfers the configuration file from flash memory to RAM and reinitializes all dynamic data.

The Cold Start procedure is flowcharted in

Figure 53. The controller initiates the Cold Start procedure:

After a power outage, when diagnostics indicate that the controller hardware and software program are intact, but the content of the RAM database is incorrect. (See Figure 52.)

On a Mode transition from PROGRAM to RUN. (This Mode transition can be initiated by operating the Mode switch on the controller, or by exiting the Program mode at an operator interface.)

When initiated by the user (after download with Cold Start selected, or any transition from PROGAM Mode to RUN Mode.)

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HC900 Hybrid Controller Installation and User Guide

Revision 5

 

 

9/03

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Honeywell HC900 manual Warm Start Operation Cold Start

HC900 specifications

The Honeywell HC900 is a robust control solution designed to meet the demands of process industries. This flexible and powerful platform provides a comprehensive set of features tailored for process control and monitoring applications. The HC900 is particularly suited for batch control, continuous processes, and discrete applications, making it a versatile choice for a variety of industries, including oil and gas, chemicals, and electricity generation.

One of the main features of the HC900 is its modular design. This allows users to customize their control systems by selecting from a range of I/O modules, communication options, and control strategies. The system supports both analog and digital inputs and outputs, enabling seamless integration with existing infrastructures. Additionally, the modular approach enhances scalability, allowing users to expand their systems as their needs evolve.

The HC900 is equipped with advanced control technologies, including adaptive control, multivariable control, and real-time data logging. These capabilities facilitate fine-tuned control over complex processes, improving efficiency and reducing waste. The system can manage multiple process loops simultaneously, providing operators with a holistic view of their operations.

Another significant characteristic of the HC900 is its intuitive user interface. The system features a graphical display that allows operators to monitor system performance easily and make adjustments quickly. This user-friendly design minimizes training requirements and encourages efficient operation across different experience levels.

Furthermore, the HC900 incorporates sophisticated data management tools. With built-in logging and reporting functions, users can track process variables and generate comprehensive reports for analysis and regulatory compliance. This data-centric approach fosters informed decision-making and enhances overall operational effectiveness.

From a communication standpoint, the HC900 supports a variety of protocols, making it compatible with many industry-standard devices. This interoperability ensures that users can integrate the HC900 into their existing systems without hassle, streamlining migration and upgrade processes.

Additionally, the HC900 is built with reliability in mind. Its rugged design ensures durability, capable of withstanding harsh environments while maintaining consistent performance.

In summary, the Honeywell HC900 stands out as a powerful and flexible control solution, equipped with modular design, advanced control technologies, and user-friendly interfaces that cater to the diverse needs of process industries. With its comprehensive data management capabilities and robust communications options, the HC900 is an excellent choice for organizations striving for efficiency and reliability.