Operating Characteristics - Controller Modes

Controller Modes

The HC900 Controller includes three operating modes. The purpose of each mode is described immediately below, and salient characteristics of each are described in Table 19. The functions of the Mode Switch are described in Table 20, and the procedures that the controller performs in transitions between modes are described in Table 21.

PROGRAM Mode

In the PROGRAM Mode, active control processing is suspended. This mode is used for safe execution of utility functions such as configuration download and calibration of analog inputs and outputs.

All outputs are Off.

RUN Mode

The Run Mode is used for normal operation of the controller; that is, for running the control configuration that was previously downloaded. Configuration download and other utility functions can be performed in this mode. See the Hybrid Control Designer User Guide for precautions, restrictions, and procedures.

OFFLINE Mode

The OFFLINE Mode can be entered only from the RUN Mode, and is intended primarily for performing AI calibration.

Because Function Blocks are not processed and outputs are Frozen in this mode, inputs (that is, process values) can vary from the values that existed when the OFFLINE Mode was entered.

Before entering the OFFLINE Mode:

KNOW all potential consequences of suspending control action..

PLAN for all operator actions required to preclude adverse consequences while processing is suspended, and when resuming control processing.

EXECUTE prudent control actions (such as placing all control loop in the Manual Mode). Failure to comply with these instructions may result in product damage.

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HC900 Hybrid Controller Installation and User Guide

Revision 5

 

 

9/03

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Honeywell HC900 manual Controller Modes, Program Mode, RUN Mode, Offline Mode

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.