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Honeywell HC900 manual Signal Grounding, Signal-Wire Grounding

Models: HC900

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I/O Module Installation and Wiring - Terminal Block-to-Field (Signal) Wiring

Signal Grounding

The shield for each input should be grounded at the grounding bar (optional) at the top or bottom of each rack as indicated in Figure 27. For low-frequency noise rejection, I/O wiring shields should be grounded only at the controller end.

For high-frequency noise rejection, shields should be grounded at the controller and at the field device. If the ground voltage potential at the field device is different from that at the controller, a DC isolation capacitor should be used between the shield and the grounding bar on the rack.

Figure 27 - Signal-Wire Grounding

Aluminum grounding bars for I/O wiring are available as options. When selected for use, they are fastened to the top and/or bottom of each rack, as indicated in Figure 28. To enable connection of multiple ground wires with a single screw, the wires can be twisted together and secured with a wire lug.

To facilitate module replacement, it is advisable in most cases to route all wiring through either the top or the bottom of the terminal block. This

allows the terminal block to pivot up or down, allowing ready access to the

module, and is the preferred method for a limited number of wires.

For a larger number of wires, or for wires of a heavier gauge, it is advisable to route some wires through the top of the terminal block, and some through the bottom, as indicated in Figure 28. In this case, it is necessary to adjust wire length so as to ensure adequate flexibility of the twisted wires and to provide clearance sufficient to remove the I/O module.

Figure 28 - Wire-Shield Grounding

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HC900 Hybrid Controller Installation and User Guide

Revision 5

 

 

9/03

Page 69 Page 71
Page 70
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Honeywell HC900 manual Signal Grounding, Signal-Wire Grounding
Page 69 Page 71

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.