Theory of Operation

2.0THEORY OF OPERATION

2.1General Component Descriptions

The UPS system includes all of the equipment necessary to continuously provide computer-grade AC power to a critical load, even when there is an interruption of the utility power. It consists of a System Control Cabinet (SCC), UPS modules and a back-up battery plant. Refer to Figure 6 and Figure 7. Except where otherwise noted, the configuration is presumed to be parallel-redundant (with at least one more UPS module than required to support the rated load).

2.1.1System Control Cabinet

The System Control Cabinet (SCC) includes system controls, static bypass switch, load transfer con- trol, protective devices and other accessories. The system controls simultaneously monitor two or more parallel UPS modules sharing a critical load for increased capacity and/or redundancy. The two

(2) motor-operated system circuit breakers (system bypass breaker—SBB and UPS output breaker) may be contained within the SCC, depending on the configuration designed for your installation.

System Controls: The system control logic automatically manages critical bus operation and moni- tors performance of the UPS modules. Microprocessor technology and dedicated firmware provide advanced logic control and a comprehensive display of information. The system control logic synchro- nizes the output of the UPS system to the bypass source. The SCC includes ports for communicating with external devices. Liebert Multi-Module Units do not require an SCC for load sharing. Automatic, parallel module load sharing is a function built into the modules themselves; however interconnection through the SCC enables the modules to share data for more precise control. Modules do not require master clocks or controls in order to load share or free-run at 60.0 Hz.

Static Bypass Switch: The static (solid-state) bypass switch immediately transfers the load from the inverter to the bypass AC power source in the event of a severe overload on the system or a failure within the UPS. This transfer takes place without any interruption of the power supplied to the load. In all SCCT control cabinets 1600A or larger and in all SCCI and SCCC control cabinets, the system includes redundant circuits to detect and isolate shorted SCRs in the static switch.

Fuses are installed in series with the static bypass circuit (with the exception of the continuous duty static switch installed in the SCCC control cabinet) to ensure reliable overload protection in the unlikely event of a catastrophic output condition (e.g., a dropped wrench) electrically close to the out- put of your UPS system. The static switch SCRs themselves are rated to easily handle the fuse-blow- ing current.

Bypass Circuit: The bypass circuit consists of electrically operated circuit breakers and associated synchronizing and control circuitry to transfer the load to/from the bypass source.

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Emerson Series 610 manual General Component Descriptions, System Control Cabinet
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Series 610 specifications

The Emerson Series 610 is a cutting-edge solution for precise process measurement and control, designed specifically for industries where accuracy and reliability are paramount. This advanced instrument, often utilized in oil and gas, chemical processing, and water treatment sectors, combines innovative technology with robust features to meet the demanding requirements of modern industrial applications.

One of the standout features of the Series 610 is its exceptional measurement accuracy. The device employs advanced sensor technology that enables precise determination of variables such as pressure, temperature, and flow. This accuracy translates into improved process efficiency and enhanced product quality. With a wide range of measurement capabilities, the Series 610 can handle varying process conditions and fluid types, making it versatile across different applications.

The heart of the Emerson Series 610 lies in its intelligent diagnostics and predictive maintenance functionalities. This built-in technology allows for real-time monitoring of the device's operational status, providing valuable insights into performance trends. By detecting anomalies early, users can take proactive measures to prevent potential failures, thereby reducing downtime and maintenance costs.

Moreover, the Series 610 is designed with user-friendly features. Its intuitive interface and easy-to-navigate menus facilitate quick setup and configuration, enabling operators to be productive from the outset. The device also supports various communication protocols, including HART and FOUNDATION fieldbus, ensuring seamless integration into existing control systems and enhancing overall automation capabilities.

Another notable characteristic of the Emerson Series 610 is its robust construction. Designed to withstand harsh environmental conditions, it is built with durable materials that offer high resistance to corrosion and physical damage. This durability ensures longevity and reliability, even in the most challenging industrial environments.

In summary, the Emerson Series 610 represents a significant advancement in process measurement technology. With its exceptional accuracy, intelligent diagnostics, user-friendly design, and robust construction, it is an ideal choice for industries seeking to enhance their operational efficiency and reliability. Its ability to seamlessly integrate into existing systems further solidifies its position as a leading solution in the field of industrial measurement and control. As industries continue to evolve, the Series 610 is poised to meet the challenges of the future with confidence and precision.
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