Using the e-Sense Port on the zappi to Limit Device Output

The e-sense port on the zappi is a versatile input that allows for external signals to control the operation of the charger. By integrating a 240V signal at the e-sense terminal, users can configure their zappi to limit charging or alter its behaviour based on this input. This is particularly useful for managing energy consumption in situations where a specific event or condition (such as a signal from a home energy system or an off-peak tariff switch) needs to trigger a change in charging behaviour.

Step-by-Step Guide to Configuring the e-Sense Port

1. The e-Sense Port

The e-sense terminal is located inside the zappi unit and is designed to detect the presence of an external voltage signal. When a 240V signal is applied to this terminal, the zappi can be set to respond by limiting the charging current or changing the charging mode.

2. Accessing the e-Sense Terminal

1. Turn off power to the zappi unit before any wiring or adjustments.
2. Remove the cover of the zappi to access the internal components.
3. Locate the e-sense terminal, There is text on the main PCB above the e-sense terminal to aid. 

3. Wiring the e-Sense Port

To set up the 240V signal, wire the external device (such as a home automation system, energy tariff controller, or relay) to the e-sense terminal. Ensure the wiring is done in accordance with safety standards and is secure.

4. Configuring the Zappi Menus

Once the wiring is complete and the external device is ready to send a 240V signal, the next step is to configure the zappi's settings through its on-screen menus.

1. Turn the zappi back on and access the main menu.
2. Navigate to "Other Settings" by selecting:
   • Menu > Settings > Advanced
3. In the advanced settings menu, locate and select "e-sense input".
4. Set the mode for the e-sense input: Load Limit
   
   • Select the new max output in amps you wish for zappi to be able to provide while the sense terminal is live. 

5. Testing the Setup

Once the settings are configured, it’s crucial to test the system to ensure the 240V signal is correctly detected and the desired limiting or action occurs.

1. Activate the 240V signal (e.g., switch on the external device controlling the signal).
2. Observe the behaviour of the zappi on the display. It will respond according to the configuration you set, limiting charging or adjusting its operation and a small e will appear on the display. 
3. Turn off the 240V signal and verify that the zappi returns to its default behaviour.

Safety and Compliance

When working with the zappi’s e-sense port and any external wiring, always ensure compliance with local electrical codes and safety regulations. If unsure, consult a qualified electrician for installation.