CIRCUIT DESCRIPTION

UM344-2

 

 

 

Input Circuitry

 

 

 

 

 

Upscale/

P-Channel

 

 

 

 

FET Switch

 

 

RTDI+

104 uA

Downscale

V Burnout

 

 

 

 

Burnout

 

 

 

Source

 

 

 

 

 

 

 

 

 

 

Trickle Current

 

 

 

TC+

 

 

 

 

RTD

TC

 

 

 

SEL

 

52 uA Sink

 

RTD

 

TC-/RTD-

 

 

 

 

 

 

 

 

 

 

CMOS

 

 

 

 

 

Analog

 

 

 

 

 

Switch

 

 

 

 

 

2-Pole Filter

AMP

Input 1

A to D

Converter

Reference

 

 

Junction

AMP

Input 2

Temperature

 

 

Sensor

 

 

 

 

 

 

 

 

 

 

 

Control

SCLK

Data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12-42 Vdc Loop Power Supply Input

 

Isolated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power Supply

 

 

 

 

 

 

Output Circuitry

 

 

 

 

 

 

 

 

 

Digital Signal

 

 

 

 

Pulse On

 

 

 

Pushbuttons

 

 

 

 

 

 

 

 

 

SIGNAL+

 

V to I

Pulse Off

 

ASIC

Zero

 

 

 

Converter

 

 

D to A

Loop

SIGNAL-

 

 

 

Converter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal

 

XMIT (TXA)

 

 

 

Full Scale

Analog

HART

 

 

 

REC

 

R XD

 

 

 

 

 

 

 

 

Meter,

 

2-Pole

Zero Crossing

 

HART

TXD

 

Active Filter

Detector

 

 

Modem

Earlier

 

 

(RXA)

XTCs

 

 

 

 

 

 

 

Only

 

 

 

 

 

 

 

 

 

 

X02829S1

 

 

 

 

 

 

Data/Control

Isolation

Microcontoller

(uC)

UART

Digital

Meter

FIGURE 7-1 Model 344 Electronics Module Block Diagram

7-2

September 1995

Page 134 Page 136
Page 135
Image 135
Siemens UM344-2 user manual Model 344 Electronics Module Block Diagram
Page 134 Page 136

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.
Top Page Image Contents