CONTROLLER MODE INSTALLATION WIRING

UMA344-2-1

Network for Non-Hazardous Locations

_

Power Supply See Note 1

+

See Note 4

250

See Note 6

See

Note 2

 

Signal Test

+ _ + _

HART

Communication

Filter

See Note 7

_

I/P Device

See Note 1

+

Network

Junction

Qty. 2

Optional Terminal Boards for Two Splices: Shield and Negative Lead

Sensor

Model 344

Terminals

Terminals

Notes:

See Note 5

1.I/P device examples are: Transducer Model 77, 771, 772R or 773 and Valve Positioner Model 750E or 760E. The I/P can be either a HART or non-HART signalling device, a Primary Master or a Secondary Master.

The System Power Supply is shown as a separate device. In practice, it may be part of a network device.

2.Network resistance equals the sum of any barrier resistances and the current sense resistor. Minimum value 250 Ohms; maximum value 1100 Ohms.

3.Connect the MXC (a Secondary Master) to the loop only in the non-hazardous location. The MXC is a non-polar device.

4.Interconnect all cable shields and ground only at the power source.

5.For access to Model 344 terminals, remove shorter end cap.

X03013S1

6.Maximum loop cable length calculated by formula in Section 4.3.5.

7.Install a HART communication filter when using a Model 77, 771, 750E or other high impedance coil-type device. The filter bypasses HART signals around the high Z device.

FIGURE 4-2a Model 344 Connections, Controller Function Block ON (Analog Mode)

2

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Siemens UM344-2 user manual Hart

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.