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Siemens UM344-2 user manual Safety Barriers, Connection of Miscellaneous Hardware

Models: UM344-2

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INSTALLATION

UM344-2

ŸA Junction should be a simple electrical series connection containing NO repeaters or other devices (active or passive) that can degrade HART communications.

4.3.7 Safety Barriers

Installed safety barriers must comply with the following:

ŸLocate intrinsic safety barriers between the system power supply (e.g., Primary Master, if used) residing in the non-hazardous area and the transmitter(s) in the hazardous area.

ŸCombined or separate supply and return barriers may be used.

ŸFor an intrinsically safe application, the DC voltage applied to the safe side of the barrier must be 0.6 Vdc less than the rated barrier working voltage.

ŸAn Active Supply Barrier must be operated within its specified input working voltage.

ŸBarrier shunt impedance to ground shall not be less than 5000Ω for the HART range of frequencies (500 Hz to 2500 Hz).

ŸBarrier end-to-end resistance, stated by the manufacturer, is used in calculating the maximum Network cable length and minimum and maximum network voltages.

ŸThe barrier shall be installed and wired in accordance with the manufacturers instructions.

Refer to Appendix B for hazardous area installation drawings.

4.3.8 Connection of Miscellaneous Hardware

Miscellaneous non-signaling hardware (e.g., recorders, current meters) may be connected to a Point-To- Point Network in accordance with the following list.

IMPORTANT

No non-signaling hardware (meters or measuring devices) may be connected to a Multi-Drop Network since the transmitters, in this mode, do not output an analog process variable.

ŸMiscellaneous hardware may be series or parallel connected to the Network according to its function.

ŸMiscellaneous hardware must be passive two-terminal devices.

ŸMiscellaneous hardware may not generate any type of noise or signals, other than noise that is inherent in resistive components.

4-12

September 1995

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Page 46
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Siemens UM344-2 user manual Safety Barriers, Connection of Miscellaneous Hardware
Page 45 Page 47

UM344-2 specifications

The Siemens UM344-2 is a cutting-edge industrial controller designed to meet the demands of modern automation and control systems. This powerful device is specifically developed for use in various applications, including manufacturing, process control, and machinery integration. The UM344-2 stands out for its versatility and robust performance in harsh industrial environments.

One of the main features of the Siemens UM344-2 is its high processing speed, which allows for real-time data processing and decision-making. The controller utilizes advanced microprocessor technology, ensuring quick response times and efficient operation. Its architecture supports multitasking, enabling it to manage multiple processes simultaneously without compromising performance.

The UM344-2 features a modular design, which provides flexibility in configuration and scalability. Users can easily add or remove modules to tailor the system to specific application requirements. This adaptability is beneficial for businesses that need to scale their operations or adjust to changing production demands. The controller is compatible with a variety of I/O modules, allowing for seamless integration with other equipment and systems.

In terms of connectivity, the Siemens UM344-2 supports various communication protocols, including Profibus, Profinet, and Ethernet. This versatility ensures smooth data exchange between the controller and other devices in the automation ecosystem, facilitating comprehensive monitoring and control. The inclusion of these communication standards enhances interoperability and allows for the integration of legacy systems with newer technology.

The Siemens UM344-2 is equipped with advanced diagnostic tools, which enable users to monitor system performance and detect potential issues in real-time. This feature reduces downtime and maintenance costs by allowing for proactive management of the system. The controller also supports remote access capabilities, enabling technicians to troubleshoot and configure systems from off-site locations.

Safety is a critical consideration in industrial environments, and the UM344-2 is designed with this in mind. It incorporates safety-certified features, ensuring compliance with international safety standards. Users can implement safety functions directly within the controller, streamlining system design and reducing the need for external safety components.

Overall, the Siemens UM344-2 exemplifies the fusion of technology and practical application, making it an essential component for businesses looking to enhance their automation processes. With its high performance, flexibility, and focus on safety, the UM344-2 is a reliable choice for industries aiming for efficiency and innovation in their operations.