This article outlines the connection diagram for the Metacentre CORE central management system. The information provided is intended for first-time users, as well as any person responsible for integrating the CORE module into compressed air systems.

Metacentre CORE Connection Diagram Overview

The connection diagram provides a generic overview and technical details on how to connect the CORE module. It's crucial for a competent technical person to interpret the diagram and adapt it to their specific application. While the diagram illustrates a general approach, the actual wiring of items like the power supply, digital relay output, and digital input options depends on your custom setup. You'll need to make your own interpretations for interwiring your systems and products to the CORE.

Sensor Connections

The CORE's sensor connection options are designed for use with Metacentre-supplied sensor options. If you intend to use sensors not provided by Metacentre, the responsibility for their correct connection and functionality lies with you. The diagram showcases an intended use scenario; connecting anything outside of this scope requires your own expertise and discretion.

Pressure Sensors

Upon purchasing the CORE, two dedicated pressure sensors (as outlined in the connection diagram) are included. They provide the means to monitor dry and wet side system generation pressure, and using both is considered good practice. These included sensors are not optional within the CORE wizard, meaning there's no option to enable or disable them. The CORE will always look for these sensors, and if they are not found, an alarm will be triggered. All other sensors outlined in the wiring diagram are optional and must be purchased separately.

Digital Output (DO)

Even though there is only one available digital output connection, its function is configurable within the CORE's dedicated setup wizard. You can select from the following options:

• System on
• Any system fault
• Any air compressor fault
• Insufficient capacity
• Low system pressure ALARM
• High system pressure ALARM

Digital Inputs (DI)

The CORE has two dedicated digital inputs with fixed functions that cannot be changed in the setup wizard.

• Pins 3 and 4: Table Override (or Select) ON/OFF Activation This feature allows you to select any configured setup table (from 1 to 6).
• Pins 5 and 6: Remote Start/Stop Function This input allows you to start or stop the CORE system's management.

Additional Connections and Specifications

The diagram also shows how to connect:

• Communication Bus Connections
  • Modbus RTU
  • Airbus485 (Metacentre's internal control bus protocol)
• The Power Supply

The diagram also showcases information on interconnect technical specifications, such as:

• Voltage and current nominal indications for the digital relay outputs.
• Sensor measurement ranges and types.
• Wire or cable specifications and limitations, such as suggested cable sizes and types, or maximum cable lengths.

This article, and the accompanying connection diagram, serve as a baseline reference. While it outlines standard use cases and wiring patterns, custom installations require technical interpretation based on local factors. Always ensure wiring is performed by qualified personnel according to the latest industrial standards and Metacentre guidelines. For non-standard use cases or third-party integrations, users are expected to assume full responsibility for correct implementation.