For IN-BOUNDS and OUT-OF-BOUNDS Relay Functions (P111 = 2 and 3 respectively), a dead band prevents relay chatter due to material level fluctuations at both the upper and lower setpoints.

Parameters

Enter the dead band in either percent of span or units of measure (P005). The deadband value is applied both above and below the upper and lower bound setpoints as shown in the figure.

Actual ON or OFF setpoint P116, deadband

Setpoint set in P112 or P113 P116, deadband

Actual OFF or ON setpoint

Independent Relay Failsafe (P129)

P129 Relay Failsafe

Sets the failsafe operation per relay to allow for more flexible programming.

Primary Index

Relay

 

 

 

OFF

 

*

Response governed by P071 Failsafe Material Level

 

 

 

 

Values

HOLd

 

For LAST KNOWN relay state retention

 

 

 

 

dE

 

 

To have the relay de-energize immediately on failsafe

 

 

 

 

 

 

 

 

 

En

 

 

To have the relay energize immediately on failsafe

Altered by

•

P071 Failsafe Material Level

Related

•

P070 Failsafe Timer

•

P111 Relay Control Function

 

 

 

 

 

 

Use this for operations independent of the Failsafe Material Level (P070).

Relay Failsafe is only available for the following relay functions (P111) and is not used for any other relay control function.

 

Relay Function (P111)

Preset (P129)

1

– level alarm

 

 

 

 

2

– in bounds alarm

 

 

 

 

3

– out of bounds alarm

OFF

 

 

 

4

– rate of change alarm

 

 

 

 

5

– temperature alarm

 

 

 

50 – all pump controls

dE

 

 

 

To select an independent Relay Failsafe value:

1.Press FUNCTION to display the Auxiliary Function symbol.

2.Press ARROWS to scroll through the failsafe options.

3.Select option and press ENTER .

Page 46

SITRANS LU01 – INSTRUCTION MANUAL

7ML19985BE02

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Page 52
Image 52
Siemens LU01 instruction manual Independent Relay Failsafe P129, P129 Relay Failsafe, Relay Function P111 Preset P129
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LU01 specifications

The Siemens LU01 is a state-of-the-art train control and signaling system designed to enhance the safety and efficiency of rail networks. This sophisticated system leverages advanced technologies and innovative features to ensure seamless train operations, lower maintenance costs, and improved overall performance.

One of the main features of the Siemens LU01 is its implementation of the European Train Control System (ETCS). ETCS is a vital component in modernizing rail infrastructure across Europe, aiming to standardize various train control systems for enhanced interoperability among different national networks. The LU01 facilitates the integration of ETCS Level 1 and Level 2, allowing for both trackside equipment and onboard systems to work in harmony to manage train movements effectively.

Additionally, the LU01 employs a decentralized architecture that enhances system reliability and minimizes downtime. This design means that it can operate even in the case of individual component failures, ensuring that train operations remain uninterrupted. Furthermore, the LU01 utilizes advanced diagnostic tools and predictive maintenance technologies to monitor system performance continuously. This proactive approach allows for early identification of potential issues and timely maintenance, which contributes to reducing operational costs.

Another critical characteristic of the Siemens LU01 is its capability for real-time data transmission. The system integrates wireless communication technologies, enabling constant connectivity between trains and control centers. This feature allows for real-time updates on train positions, speeds, and other critical operational data, thereby enhancing situational awareness for train operators and maintaining optimal schedules.

Moreover, the LU01 is designed to be compatible with existing rail infrastructure, ensuring a smooth transition for railway operators looking to upgrade their signaling systems without extensive overhauls. This adaptability makes it an appealing choice for both new projects and retrofitting existing rail networks.

In summary, the Siemens LU01 stands out for its cutting-edge features, including support for ETCS, decentralized architecture, real-time data communication, and compatibility with legacy systems. With these technologies and characteristics, the LU01 significantly contributes to the safety, efficiency, and sustainability of modern rail transport systems, making it a pivotal solution in the evolution of railway operations.
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