zappi v1Operation

  1. Controls & Indicators
  2. Display
  3. Status Screens
  4. Charging Modes
  5. Manual Boost
  6. Smart Boost
  7. Boost Timer
  8. Lock Function

1. Controls & Indicators

 

1. Display Graphical LCD display with LED backlight

Backlight can be activated by tapping the unit

2. Front Cover The white front cover hides the enclosure screws
3. Tethered Charging Cable The charging cable is 5m or 8m and is fitted with Type 1 or Type 2 plug
4. Control Buttons Four tactile buttons used to navigate the menus and alter settings:

Change charging Mode| Exit current menu

Enter Menu | Move up a menu item | Increase value

Enter Menu | Move down a menu item | Decrease value

Boost | Select item | Confirm value and move to next setting

5. Integrated Cable Holder When not in use, the charging cable should be wrapped around the unit

2. Display

 

1. Import / Export Power The power being either imported or exported from or to the grid (kW). The direction of the arrows indicate if the property is currently importing power (left) or exporting power (right)

The size of arrows is proportion to the level of power. When the property is neither importing or exporting power, the figure will be 0.0kW and there will no animated arrows. The property is then said to be ‘in balance’

2. House Load Power The power that the property is currently using in kW

It does not include any surplus power being sent to the heater(s)

Note: This is displayed only when the Generation Sensor is installed (either connected to CT2 input or a harvi device)

3. Status Text The current status is displayed here (see Status Screens)
4. Generation Power The power being generated at this time in kW
Note: This is displayed only when the Generation Sensor is installed (either connected to CT2 input or a harvi device)
5. Lock Icon Operation lock is active
6. Date & Time The current date and time
7. Mode Icons These icons indicate that the import limiting is active (house) or the e-Sense input is live (e)
8. zappi Icon This zappi unit. If there are wavy lines above the icon, the unit is thermally limiting (the output power will be temporarily reduced)
9. Charge Mode Shows the selected Charging Mode; FAST, ECO or ECO+ (see Charging Modes)
10 Charge Delivered to EV The accumulated charge energy that has been sent to EV in this charge session
11. Current Charging Power When the EV is charging, arrows will show here along with the charging power in kW
12. Green Level of last charge This is percentage of ‘Green’ energy for the last charge session, this is shown at the end of a charge or when the EV is unplugged

 

Display Icons Key

House Consumption – Not Importing
House Consumption – Importing
Solar Generation Power
Wind Generation Power
Grid Power – Import / Export
Power Flow Direction – Small Amount
Power Flow Direction – Medium Amount
Power Flow Direction – Large Amount
Waiting For Surplus Power
DSR Mode Active
Charge Mode = FAST
Charge Mode = ECO
Charge Mode = ECO+
zappi Device – Normal
zappi Device – Too Warm (output limited)
Import Power Limiting Active
Economy Tariff Electricity Available
Current Charging Power
Energy sent to EV for this charge
Warning – refer to text on screen

3. Status Screens

EV Disconnected

The EV is not connected to zappi
In this example the last charging session delivered 20.8kWh of energy to the EV and 80% of that energy came from the solar panels.

Waiting for Surplus

zappi is waiting for sufficient surplus power from the microgeneration system. This screen will be shown in ECO+ mode as it’s only in this mode that charging will stop if there is not enough surplus power.

The house in the centre is straight-faced as grid electricity is being used by the house (0.9kW is this example).

Waiting for EV

zappi is waiting for the EV to respond; the EV is not ready to accept charge.

Charge Delayed

The charging session has been delayed by the EV because a scheduled charge has been set in the vehicle.

Paused

zappi is paused for a few seconds in order to limit the start/stop frequency during ECO+ mode charging.

The Start/Stop Delay can be changed in the Charge Settings/ECO+ Settings menu option.

Charging

The EV is charging.
In this example the car is charging in ECO+ mode at 1.6kW, there is no import or export from the grid (0.0kW) and the EV battery has charged by 8.9kWh since the car started.

Charge Complete

The EV is fully charged.

The charge energy used during the last charge is displayed at the bottom right (20.0kWh in this case) and the ‘green contribution’ is also shown (40% in this example).

Restart

zappi is doing a restart sequence.

This may happen with some EVs that need to be ‘woken-up’ to start charging after a pause in the charge.

Charge should start immediately afterwards, otherwise the “Charge Delayed” message will appear.

4. Charging Modes

zappi has three different charging modes which can be selected simply by pressing the button when the main screen is showing. The charge mode can be changed before or during a charge.

Regardless of the charge mode used, all of the surplus electricity is used but zappi’s special eco charge modes, limit the amount of grid electric used. Below is explanation of each of the three charging modes.

 

 

 

 

FAST

Charges at the fastest rate.

Fast Mode will charge the EV at the fastest rate and will import grid electricity if there is insufficient surplus generated power.

The actual charge rate is dependant on the EV’s onboard charger and the grid supply voltage. Typically, vehicles have either a 3.3kW or 6.6kW charger. The actual power can be a little different if the grid supply voltage is not exactly 230V.

zappi will deliver up to 7kW provided the supply connection is suitably rated.

 

 

Eco

Adjusts the charge rate to limit the use of grid electricity.

The charge rate is continuously adjusted, in response to changes in generation or power consumption elsewhere in the home, thereby minimising the use of grid power.

Charging will continue until the vehicle is fully charged, using available surplus power.

However, if at any time, the available surplus power falls below 1.4kW, the shortfall will be drawn from the grid.

Note: The EV charging standard does not support charging below 1.4kW.

 

 

ECO+

Adjusts the charge rate to limit the use of grid electricity and will pause the charge if there is too much grid electricity being used.

The charge rate is continuously adjusted, in response to changes in generation or power consumption elsewhere in the home, thereby minimising the use of grid power.

Charging will pause if there is too much imported power, continuing only when there is enough surplus power available.

The surplus power threshold at which the charge will start or stop can be set in the ECO+ Settings option, which is found in the Charge Settings menu.

It is possible to charge the EV using only surplus renewable power, providing there is sufficient surplus power to do so. To do this, set the Min Green Level to 100%.

The Min Green Level is the minimum level for the contribution of green energy at the end of the charge. The actual green contribution for the charge, is displayed when the charge is complete or the EV is disconnected.

For example: With Min Green Level set to 50%, charging will be paused if 700W of power is being imported from the grid and will resume charging when there is 700W of power being exported.

Note: The EV charging standard does not support charging below 1.4kW.

STOP

In STOP mode zappi will not charge your EV. (This includes the boost modes and timed boost). zappi will continue to measure power and communicate with the other myenergi devices.

5. Manual Boost

The Manual Boost function can only be used when charging in ECO or ECO+ mode. When boosting, the charge rate is set to maximum (just like FAST mode), until a set amount of energy has been stored in the EV’s battery. After which, zappi will revert back to ECO or ECO+ mode.

This function is useful if you arrive home with an almost flat battery and would like to charge the vehicle immediately to ensure there is enough charge for a short trip if needed.

The amount of energy (kWh s) the boost uses can be changed in the Charge Settings/Boost menu.

When in ECO or ECO+ mode, each press of the button will cycle through the boost options as illustrated below:

Activating Boost

 

1. When charging in ECO or ECO+ mode, press until BOOST is shown.
2. The boost will start after a couple of seconds and the display will show the remaining boost energy.
The boost duration can be altered (when a boost is not in progress) in the Charge Settings/Manual Boost menu option.

 

Cancelling Boost

The boost can be cancelled by pressing until Cancel Boost is shown.

6. Smart Boost

The Smart Boost function will charge the EV with a minimum kWh figure by a set time. Smart Boost is available only in ECO and ECO+ modes.

The Smart Boost function does not bring the battery to a certain state of charge. The target kWh is only the energy added during the charging session.

When in ECO or ECO+ mode, each press of the button will cycle through the boost options as illustrated below:

Example: It’s a sunny Sunday and you wish to ensure there is enough charge in the EV to get to work in the morning (e.g. 15kWh), but in the meantime, you want to use the surplus energy from the PV system to charge the car, so you choose to use ECO+ mode. At sunset there was only 10kWh of charge accumulated. However, because you activated Smart Boost, and set the time you needed to leave for work, zappi automatically boosted the charge in the night to top up the battery to the required 15kWh by 7am.

Activating Smart Boost

 

1. When charging in ECO or ECO+ mode, press until SMART BOOST is shown.
2. The SMART BOOST icon will show including the set energy amount in kWh s and the target time, (17kWh s and 7am respectively, in this example screen shot).
3. zappi will then test the EV for a few seconds, to determine the maximum charge rate.
4. The boost will start at the latest possible time to achieve the set energy amount, if the current charge session has already accumulated enough energy, the boost will not be required and so will not operate.
The required energy and target time can be altered only when Smart Boost is not active. Theses settings are in the Charge Settings/Smart Boost menu option.

7. Boost Timer

When using ECO or ECO+ charge modes, zappi can be programmed to ‘boost’ the current charge at certain times. When boosting, the charge rate is set to maximum (just like FAST mode), regardless of the amount of available surplus power. This means that power may be drawn from the mains grid supply during boost times.

–   There are four editable time slots which can be set to operate for certain days of the week.

–   Setting the duration to 0h00 will make the boost inactive.

Programming Boost Times

 

1. From the main screen, press or to enter Main Menu.
2. Select Boost Timer from within the Charge Settings menu. The BOOST TIMER screen is then shown.
3. The boost can now be edited. Use or buttons to highlight the time slot you wish to change. The screen shows the start hour being selected.
4. Alter the start hour with the or buttons and press the button to move to minutes.
5. Edit the duration in the same way and then press again to edit the days of the week you want the boost to be active for; each day of the week and by toggled on/off with or buttons, press to go to the next day. Pressing on the last day (Sunday) will confirm the boost time slot and the whole line will be highlighted again.
6. Press to exit the BOOST TIMER screen.

Economy Tariff Boosting

Boosting only when economy rate electricity is available can be achieved in one of three ways:

 

1. By setting the boost timer to coincide with the economy tariff times. This option should be used only if the electricity meter is a dual-rate meter (modern meters usually are).
2. Boost only at set times AND if economy rate electric is available.
3. Automatically boost whenever the economy tariff rate electricity is available, regardless of boost times*

*Options 2 and 3 are available only when using the eSense input.

For option 1, the eSense Input in the Advanced menu should be set to Boost Timer Enable.

With the Boost Timer Enable function set, the BOOST TIMER screen will include an extra column (see screenshot). The e can be toggled on/off, if e is present, the boost will activate only when the boost times are valid and the economy rate tariff is available.

Alternatively the eSense input can be used to activate the boost whenever the economy tariff rate electricity is available, regardless of boost times (option 2). To do this, the eSense Input option in the Advanced menu should be set to Boost. When using this option, the Boost Timer is not needed.

Boost Time Conflicts

If one or more boost times conflict, the boost will follow the latest time or longest duration.

 

8. Lock Function

zappi can be locked from unauthorised operation. The Lock Function requires a pin number to be entered before the unit can be operated. The lock can be set to be active only when the EV is plugged in or only when unplugged, it can also be set to be always active.

The settings for the Lock Function can be found in the Other Settings/Lock Function menu option.

Lock Function Setting Description
EV plugged The Lock Function is active when the EV is plugged in, preventing tampering with the charge session or changing any settings
EV unplugged The Lock Function is active when the EV is disconnected, preventing unauthorised charging
Timeout The time before the Lock Function automatically reactivates after being unlocked
Lock Code This is the current lock code and is five digits from (1 to 4), it can be changed here
Auto Hide If set, this will hide the main display of the zappi to keep the power readings private