I/O Module Installation and Wiring - Removal and Insertion Under Power (RIUP)

Removal and Insertion Under Power (RIUP)

Read and understand all of the following information regarding RIUP before attempting to remove and/or replace any I/O module, particularly in a system that is actively controlling a process.

All of the I/O Module types in the HC900 Controller System include the Removal and Insertion Under Power (RIUP) feature. That is, while the rack is powered, any of the I/O Modules can be removed or inserted:

•With no physical damage to the module, to the rack, or to other modules in the rack

•Without disturbing the functions of other I/O modules in the rack or in the system.

Under carefully controlled circumstances, this feature enables the user to remove and insert an I/O module without completely shutting down a running system. However, it must be recognized that removing or inserting an I/O module under power is potentially hazardous to property and to personnel.

Circumstances that dictate prudent actions depend on conditions and specific process applications at each user facility. It is the responsibility of site personnel to know all potential consequences of RIUP, and to take actions to prevent all adverse consequences before removing or inserting an I/O module under power. Table 13 provides some general guidelines for establishing appropriate procedures at a given installation.

Table 13 - RIUP: Potential Hazards and Recommended Actions

Hazard

Source

Preventive Action(s)

 

 

 

 

Potentially lethal voltages on

Disconnect all signals at terminal

 

Terminal Boards associated with

blocks from sources of power before

Hazardous Voltages

I/O Modules.

removing the terminal block from

 

the I/O module.

 

 

 

 

Each signal at each of the

Either:

 

terminals for an I/O module has a

Using trained personnel and

Loss of control or view of

specific function. Any or all of the

signals may be vital for safely

appropriate control mechanisms,

a running process

controlling a process.

transfer to manual control for each

 

 

 

signal that is necessary to maintain

 

 

safe process control.

 

 

Or:

 

 

Bring the process to a safe stop

 

 

before initiating the removal or

 

 

insertion procedure.

 

 

 

EXPLOSION HAZARD

Class 1, Division 2 Installations

•DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.

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HC900 Hybrid Controller Installation and User Guide

Revision 5

 

 

9/03

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Honeywell HC900 Removal and Insertion Under Power Riup, Riup Potential Hazards and Recommended Actions, Hazardous Voltages
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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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