BLUETTI EP900 EMS Controller Interface User Manual

1. Introduction

The EMS controller offers the following features:

• Control and monitor one or multiple inverters remotely from anywhere.
• Intelligently balance loads, optimize battery usage, and make the most of solar energy across multiple inverters.
• A touchscreen to operate in a visual manner.

2. Icon Description

3. Homepage

The homepage displays key information about the Energy Storage System (ESS).

4. Energy Flow

The animation provides a simple way to understand how energy is flowing within the system.

• 62% SoC (State of Charge): Indicates the remaining battery level.
• PV generation: Shows how much power the ESS is drawing from rooftop solar panels. Tap to view more details.
• Grid charging or feeding: Shows how much power the ESS is drawing from or feeding back into the grid. Tap to view more details.
• Load consumption: Shows how much power is supplying to household appliances. Tap to learn more about where the power is going.

5. Device Management

5.1 Basic Settings

After connecting the device, tap the settings icon ⚙️ on the right side of the homepage to access the Setting page. This allows optimization of power usage through various settings.

• System Switch: The main switch for the ESS. Keep it on for charging and discharging. If off, the system is in standby mode with no input or output. Note: Turn the System Switch off when connecting cables or not using the system.
• Network Settings: Choose Bluetooth or WiFi for connecting your mobile device. (Visual representation of Bluetooth and WiFi status toggles shown).
• Working Mode: Tap to set the working modes. Refer to Section 5.3 for details.
• Date and Time Settings: To set the date and time.
• Buzzer Switch: Enables an alarm sound when the device encounters hardware faults.
• Proximity Sensor: The screen lights up when someone approaches if enabled.
• Touch Sounds: Enables a sound response during interface operation.
• Brightness: Slide to adjust screen brightness.
• Auto Sleep: Choose screen sleep time (30s, 1min, 5min, always on). Default is 1 minute.
• Language: Select system language (Chinese, English, German, or Japanese).
• Advanced Setting: Access more settings. Refer to Section 5.2 for details.
• Disaster Alert: When enabled, the ESS switches to Backup Mode upon receiving a disaster alert and returns to the previous mode after the alert concludes.

5.2 Advanced Settings

Access additional configurations:

• Grid Self-adaption: Enable when the ESS connects to an unstable grid (e.g., voltage fluctuations, low/high voltage). When charging from the grid, charging power gradually increases to minimize grid impact.
• System Switch Recovery: Saves the system switch status and restores it on restart.
• About Device: Displays information about the EMS controller.
• Reset: Resets all settings to default.

5.3 Working Modes

The ESS offers various operating modes. The EMS controller supports three primary modes: Backup, Self-consumption, and Scheduled Charge & Discharge (Time of Use). Choose the mode that best suits your home power supply configuration. Refer to the product's App User Manual for Custom Mode settings.

To set a working mode:

1. Tap 'Working Mode' on the Setting page.
2. Tap 'Working Mode' again.
3. Tap << or >> to switch between modes.
4. Tap 'Confirm'.

Note: To set 'Time of Use', tap 'Confirm', then tap the relevant icon ⚙️ to adjust parameters.

Backup Mode

Suitable for areas with unreliable power grids. The ESS charges batteries fully from the grid and solar, prioritizing solar energy. In this mode, the system acts as a reliable backup power source, activating only when the grid fails. It reserves 100% of energy for backup when solar and grid energy are ample.

Self-consumption Mode

Suitable for areas with abundant solar resources and stable power grids. The ESS primarily uses solar energy to power loads and charges the battery with any surplus power. This mode prioritizes direct solar energy consumption for household needs, storing surplus energy in the battery for peak hours or power outages.

Time of Use Mode

Suitable for areas with fluctuating electricity prices based on time-of-use. During peak pricing, the ESS powers appliances; during off-peak times, it draws power from the grid to charge the battery. Users can set the SoC High value and specific charge/discharge schedules to optimize cost savings.

1. Set SoC High: The ESS stops charging from the grid when the battery reaches the configured SoC and switches to solar charging for remaining capacity.

2. Manage Charge/Discharge Time:

• Tap 'Scheduled Manage Charge/Discharge Time'.
• Tap 'OK' in the Attention pop-up.
• Specify a period and set it as 'Off-peak' (charge during lower cost hours) or 'Peak' (discharge during higher cost hours). 'Middle' disables battery power supply to the load.

6. Practices

Note: Disable the System Switch before setting working modes.

6.1 Charge via Grid

Choose from three configuration options to charge your ESS through the grid:

• Option 1: Scheduled charging
  1. Tap 'Working Mode' on the Setting page.
  2. Tap 'Working Mode'.
  3. Tap << or >> to switch to 'Time of Use', then tap 'Confirm'.
  4. Tap the settings icon ⚙️ to enter parameters.
  5. Tap 'Scheduled Manage Charge/Discharge Time'.
  6. Tap 'OK' in the Attention pop-up.
  7. Specify a period and set it as an 'Off-Peak' period.
• Option 2: Backup mode - Please refer to Section 6.5 for details.
• Option 3: Custom mode - Please refer to the 'Custom' section in the App user manual for details.

6.2 Feed to Grid

Configure this mode solely through the BLUETTI App. Refer to the product's App user manual for details.

6.3 Offset Peak-hour Energy Usage

The ESS helps avoid high electricity prices by storing energy during the day or off-peak hours and supplying it during peak hours. This charging strategy can be scheduled via the EMS controller or the BLUETTI App.

EMS Controller:

1. Tap 'Working Mode' on the Setting page.
2. Tap 'Working Mode'.
3. Tap << or >> to switch to 'Time of Use', then tap 'Confirm'.
4. Tap the settings icon ⚙️ to enter the parameters interface.
5. Tap 'Scheduled Manage Charge/Discharge Time'.
6. Tap 'OK' in the Attention pop-up.
7. Choose a time period when electricity prices are lower and set it as 'Off-Peak'. Set 'Peak' periods for times when electricity prices are higher.

BLUETTI App: Please refer to the product's App user manual for details.

6.4 Prioritize PV Charging

This mode is suitable for areas with abundant solar resources. Ensure the PV switch of the inverter is on and solar input is successful. Turn on the System Switch on the Setting page; the system will prioritize solar energy to supply the load and charge the battery.

To rely less on the grid:

1. Tap 'Working Mode' on the Setting page.
2. Tap 'Working Mode'.
3. Tap << or >> to switch to 'Self-consumption', then tap 'OK'.

This can also be set in Custom Mode. Refer to the product's App user manual.

6.5 Backup Power

The ESS can serve as a backup power supply for emergencies, especially in areas with unstable grids.

1. Tap 'Working Mode' on the Setting page.
2. Tap 'Working Mode'.
3. Tap << or >> to switch to 'Backup', then tap 'OK'.

6.6 Device Upgrade

Firmware upgrades are performed solely through the BLUETTI App. Refer to the product's App user manual for details.

Appendix: Pro Mode

Note: Only authorized installers have permission to view and adjust parameters in this mode.