Removal and Replacement Procedures - Safety Considerations - PLAN AHEAD!

Replacing the Controller Module

Removing and replacing the Controller Module requires that that the source of AC power is removed from the rack. Removing power from the Controller rack has the following consequences:

•All control action stops

•All power to all I/O modules in the rack is lost; hence all control outputs to the process are lost. Because external power connected to terminal boards (from or to field devices) will still be present, it is essential that field devices are maintained in a safe condition during replacement procedures.

•Control to all I/O expansion racks(C50 CPU only) is lost. If power is available to the expansion racks, outputs go to configured Failsafe values.

Before replacement:

•(If possible), upload and SAVE a copy of the configuration, or ensure that a previously SAVEd copy of the current configuration is available.

•(If possible), bring the process to a safe and orderly shutdown.

 

Table 32 - Controller Module Replacement

 

 

Step

Action

 

 

1.

If a process is currently in operation, bring it to a safe and orderly shutdown.

 

 

2.

Using an external (user-supplied) switch, disconnect the power supply in the Controller rack

 

from the site AC power source.

 

 

3.

Observe where communications cables are plugged into the Controller Module, and if necessary,

 

tag them to identify their functions. Unplug all communications cables.

 

 

3.

At the top and bottom of the module, loosen the captured screws that secure the module in the

 

rack, and remove the Controller Module from the rack.

 

 

4.

Ensure that the new Controller Module is properly aligned with the slot guides, insert the new

 

Controller Module in the rack, and secure it in place with the captured screws at top and bottom

 

of the module.

 

 

5.

Re-install communications cables.

 

 

6.

Using the (user-supplied) switch, re-connect site AC power to the rack.

 

 

 

If using the Ethernet port for configuration, use the Hybrid Control Designer software to set the

 

proper network address.

 

 

7.

Download the configuration.

 

 

8.

Set the Real-Time Clock.

 

 

9.

If all status indications are green, power may be restored to the I/O modules per the application's

 

procedures.

 

 

148

HC900 Hybrid Controller Installation and User Guide

Revision 5

 

 

9/03

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Honeywell HC900 manual Replacing the Controller Module, Controller Module Replacement
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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.
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