Siemens UM344-2 user manual Controller Block, Pid/Pd/Id, Auto, Manual

Models: UM344-2

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APPENDIX A - FUNCTION BLOCK DESCRIPTIONS

UM344-2

is in MANUAL, the output is the manual (M) value (-1.0 to 110%). The manual value can be adjusted with the pushbuttons of the XTC or from the CHANGE VALVE key of the MXC. When the manual (M) value is not the function block output, it will track the output value of the controller function block.

The A/M transfer can be configured as AUTO only. When the Automatic Mode Only parameter is selected as YES, the function block will remain in the AUTO position.

Configuration allows for selecting the A/M block power-up position (automatic, manual). When the function block powers-up in manual, the value of M can be set in configuration from -1.0 to 110%.

The Power-Up Valve can only be changed by editing the parameter in this function block with the MXC or by storing a new value via the pushbuttons of the XTC.

A.8 CONTROLLER BLOCK

The controller function block provides an extensive range of Proportional-Integral-Derivative functions including: PID, PD and ID.

PID Controller

 

Controller

On/Off

Controller Type

PID/PD/ID

Action

Reverse/Direct

Proportional Gain (PID & PD)

0.01 to 100.0

Time-Integral

0.01 to 1000 min/repeat

Time-Derivative

0.01 to 100.0 min

Derivative Gain

1.00 to 30.00

Manual Reset (PD only)

0.0 to 100.0%

Manual Reset Tracking (PD only)

No/Yes

SP

PV

PID Controller

PID

PD

ID

Output

The PID controller is a reset type controller which uses external feedback to establish the integral action. The function block will force the output to track the feedback when the controller is in manual.

If the derivative time TD is set to 0.00, the derivative section is eliminated.

Equations

 

 

O = GE + R

 

 

AUTO

R =

F

 

 

 

 

 

 

TIs + 1

 

 

 

 

 

 

 

 

TDs

 

 

 

1

 

O = ±PG [P(1+

 

) - S] + [1+

 

 

]

 

 

 

 

 

(TD/DG)s + 1

TIs

MANUAL

R = F - GE ∴ O = F

A-4

September 1995

Page 162
Image 162
Siemens UM344-2 user manual Controller Block, Pid/Pd/Id, Auto, Manual

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.