Section 3 • Hardware Architecture

Digital Input/Output (I/O)

Refer to Table 2-1. Digital I/O.

Compressor Start Output:

•When the Vission 20/20 signals the compressor to start, this output is energized. When the Vission 20/20 signals the compressor to stop, this output is de-energized.

Oil Pump Start Output:

•When the Vission 20/20 signals the oil pump to start, this output is energized. When the Vission 20/20 sig- nals the oil pump to stop, this output is de-energized.

Capacity Increase Output:

•This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should increase capacity by moving the slide valve to a higher percentage, this output is energized. Once the slide valve reaches 100%, this output will not energize.

Capacity Decrease Output:

•This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should decrease capacity by moving the slide valve to a lower percentage, this output is energized. Once the slide valve reaches 0%, this out- put will not energize.

Volume Increase Output:

•This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should increase Volume Index (VI) by moving the volume slide to a higher percentage, this output is energized. Once the volume slide reaches 100%, this output will not energize.

Volume Decrease Output:

•This output is only active when the compressor is run- ning. When the Vission 20/20 determines that the compressor should decrease Volume Index (VI) by moving the volume slide to a lower percentage, this output is energized. Once the volume slide reaches 0%, this output will not energize.

Oil Sump Heater Output:

•This output is active and energized when the oil separator temperature is lower than the oil separator temperature setpoint. It is de-energized when the oil separator temperature is higher than the oil separa- tor temperature setpoint.

Trip Output:

•This output is energized when the system has no Trips. If a trip is issued, the output de-energizes and stays de-energized until the trip condition is cleared.

Slide Valve Setpoint #1 Output (Economizer):

•Normally used for an economizer solenoid, but could be used for other devices. When the compressor slide valve percentage is equal to or greater than “slide valve set-point #1”, the output is energized. When the compressor slide valve percentage is less than “slide valve set-point #1”, the output is de-energized.

Slide Valve Setpoint #2 Output (Hot Gas):

•Normally used for a hot gas solenoid, but could be used for other devices. When the compressor slide valve percentage is equal to or greater than “slide valve set-point #2”, the output is energized. When the compressor slide valve percentage is less than “slide valve set-point #2”, the output is de-energized.

Alarm Output:

•This output is energized when the system has no alarms. If an alarm is issued, the output de-energizes and stays de-energized until the alarm condition is cleared.

Unused:

•This output has no current function. Liquid Injection #1 Output:

•If the compressor has liquid injection oil cooling, this output is active. When the compressor is running and the discharge temperature is above the oil separator temperature override setpoint and the oil separator temperature is above the override setpoint, then the output is energized. The output is de-energized when the discharge temperature falls below the “on” set- point minus the solenoid differential.

Liquid Injection #2 Output:

• Not Defined

Remote Enabled Output:

•This output is energized when the Vission 20/20 panel is enabled for remote control. The compres- sor can be running or stopped, but is available to the remote system. If the compressor has an alarm or is placed into the manual stop position, this output is de-energized.

Shunt Trip:

• Not defined.

Comp Motor Starter Auxiliary Contact:

•This input looks for a feedback signal from the com- pressor starter, confirming that the compressor starter is energized.

3 – 2

Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153

Page 17 Page 19
Page 18
Image 18
Emerson 20/20 service manual Digital Input/Output I/O
Page 17 Page 19

20/20 specifications

Emerson 20/20 is an advanced platform designed for real-time data analytics, visualization, and operational optimization in industrial settings. This robust solution aims to empower organizations by providing actionable insights derived from their operational data, enabling enhanced decision-making and improved efficiency.

One of the standout features of Emerson 20/20 is its ability to integrate seamlessly with various sources of data, whether structured or unstructured. It consolidates information from different systems, such as historians, control systems, and ERP software, allowing users to gain a comprehensive view of their operations. This integration capability is crucial for businesses looking to maximize their data utilization without being confined to a single data source.

The platform employs powerful analytics tools that utilize machine learning and artificial intelligence technologies. These tools are designed to automatically identify patterns, anomalies, and trends in real-time. By leveraging predictive analytics, Emerson 20/20 helps organizations forecast potential issues before they escalate, allowing for proactive maintenance and minimizing downtime.

Emerson 20/20 also features user-friendly visualization dashboards, which provide customizable views tailored to individual user roles. This means that whether you are a plant manager, a process engineer, or an executive, you can access relevant data that speaks directly to your needs. These dashboards facilitate easier understanding of complex data sets, promoting informed decision-making across the organization.

One notable characteristic of Emerson 20/20 is its adaptability and scalability. Businesses of all sizes can implement the platform and scale its features according to their needs. This flexibility ensures that both small operations and large enterprises can derive value from the solution, making it an attractive option for various industries.

Additionally, the platform is designed with cybersecurity in mind, ensuring that data integrity and confidentiality are maintained. This aspect is increasingly important as industries become more interconnected and target more sophisticated cyber threats.

In summary, Emerson 20/20 stands out as a powerful tool for organizations seeking to harness their operational data effectively. With its advanced analytics capabilities, seamless integration, customizable visualization, and scalable design, it offers a comprehensive solution to optimize industrial performance and support data-driven decision-making. As businesses continue to navigate the complexities of modern operations, Emerson 20/20 provides the insights necessary to stay competitive and responsive to changing market demands.
Top Page Image Contents