The Relay & Sensor Board is an optional accessory for the eddi, designed to enhance functionality and flexibility for different wiring configurations. Below, we provide an in-depth guide on its features, installation process, and configuration options.
Overview of the Relay & Sensor Board
The Relay & Sensor Board expands the eddi's capabilities by adding:
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Two independent multifunction relays (16 Amp each):
These can be configured independently or as a pair for various functions. -
eSense Input:
An isolated 230V detection input, ideal for economy tariff sensing or similar applications. -
Two temperature sensor inputs:
Compatible with PT1000 sensors for accurate temperature monitoring.
Relay Functions
Each relay can be configured for the following operational modes:
- Export Threshold: Activates when a specific export level is reached.
- Import Threshold: Triggers based on import conditions.
- Operate When Heating: Designed to activate during heating operations.
- De-stratification Pump Control: Ideal for managing thermal storage systems.
- Timed Operation: Configures the relay to activate for specific time intervals.
- Fault Signal for BMS Systems: Used for signalling issues to a Building Management System (BMS).
Note: It is often possible to split a 3-phase heating element into three individual elements by removing the linking connectors.
Installing the Relay & Sensor Board
What You’ll Need:
- myenergi Relay & Sensor Board
- The three plastic spacers included in the board package
- Provided flexible ribbon cable
Step-by-Step Instructions:
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Preparation:
- Ensure the eddi is powered off and disconnected from the mains supply before starting installation.
- Locate the eddi's main circuit board by opening the device enclosure.
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Mounting the Board:
- Position the Relay & Sensor Board over the designated connectors on the eddi’s main circuit board.
- Secure the board using the three plastic spacers provided.
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Connecting the Ribbon Cable:
- Plug one end of the flexible ribbon cable into the black connector on the Relay & Sensor Board.
- Insert the other end into the black connector located on the right-hand side of the display on the top eddi circuit board.
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Verification:
- Ensure all connections are secure and check that the board is correctly aligned with the mounting points.
Configuration and Application Examples & Menus
Refer to the Application Examples section in our help centre here for practical wiring configurations and use cases. These examples demonstrate how to utilise the Relay & Sensor Board effectively for specific applications, such as economy tariffs, de-stratification pumps, and more.