Battery settings

If a battery is connected to the inverter, the behaviour and usage of the battery can be configured here.

Parameter	Explanation
Battery type	Displays the connected battery. The battery type is identified automatically.
Battery control (only possible with service code)	The battery can be controlled by an external battery management system (e.g. energy supplier). In this case, the charging power and discharging power of the battery is controlled by the external supplier. The plant owner then receives remuneration for the energy provided, for example from the external supplier. External battery control Internal (standard): The external control is deactivated. External via digital I/O: External battery management is carried out via the digital inputs on the Smart Communication Board (terminal X401) of the inverter. A presetting can be selected or the digital inputs can be configured according to the provider's specifications. If there are no control signals, the system switches to internal control. It is still possible to read out the device status in parallel using Modbus (TCP)/SunSpec. External battery control External via Modbus (TCP): The external battery management is provided via the Modbus RTU protocol. The control signals are received via the LAN interface. If the control signals fail to appear for the set duration, the internal control system is activated. It is still possible to read out the device status in parallel using Modbus (TCP)/SunSpec. Also set the time for Timeout of ext. battery control. If the signals via Modbus are interrupted or fail to appear, the internal control system is activated after the time has expired.

Parameter

Explanation

Battery type

Displays the connected battery. The battery type is identified automatically.

Battery control
(only possible with service code)

The battery can be controlled by an external battery management system (e.g. energy supplier). In this case, the charging power and discharging power of the battery is controlled by the external supplier. The plant owner then receives remuneration for the energy provided, for example from the external supplier. External battery control

Internal (standard):

The external control is deactivated.

External via digital I/O:

External battery management is carried out via the digital inputs on the Smart Communication Board (terminal X401) of the inverter. A presetting can be selected or the digital inputs can be configured according to the provider's specifications.
If there are no control signals, the system switches to internal control. It is still possible to read out the device status in parallel using Modbus (TCP)/SunSpec. External battery control

External via Modbus (TCP):

The external battery management is provided via the Modbus RTU protocol. The control signals are received via the LAN interface. If the control signals fail to appear for the set duration, the internal control system is activated. It is still possible to read out the device status in parallel using Modbus (TCP)/SunSpec.

Also set the time for Timeout of ext. battery control. If the signals via Modbus are interrupted or fail to appear, the internal control system is activated after the time has expired.

State of charge

Parameter	Explanation
Min. state of charge (SoC) [%]	Set the minimum depth of discharge of the battery.

In periods when yields are low, the set min. SoC is increased dynamically to avoid a deep discharge. As soon as sufficient charge energy is available again, the min. SoC is reduced again to the value set.

Alternative time period

A second time period with a second min. SoC can be assigned and this is then used for the set time period.

Especially in the second half of the year, when the PV yield is lower, the battery is no longer sufficiently charged more often and the min. SoC is reached very early on. However, energy is still needed for internal battery control and the battery is therefore discharged further. If this state is maintained for long periods, the SoC may fall below the battery’s min. SoC. If this min. SoC is reached, the battery is charged from the grid by means of a trickle charge. This protects the battery from deep discharge.

To prevent a trickle charge from the grid or for other reasons, another min SoC can be assigned using the alternative time period.

Parameter	Explanation
Start	Start of alternative time period. The SoC set below applies from this time.
End	End of alternative time period. The SoC set below ends from this time.
Min. state of charge (SoC) [%]	Set the minimum depth of discharge of the battery.

Backup mode

Parameter	Explanation
Backup mode	Displays the backup function selected during the installation. Not activated: No backup function has been selected. Manual changeover: A manual KOSTAL BackUp Switch has been fitted in the house installation which can be used for the backup function if there is a power failure. Automatic changeover: An automatic changeover box has been fitted in the house installation which can be used for the backup function if there is a power failure. You will find a list of approved KOSTAL Solar Electric accessories on our website in the download area for the product.
Failure detection	Here select how the backup unit is connected in the meter cabinet. 1-phase: The backup unit was connected with one phase only. 3-phase: The backup unit was connected with three phases only.
Using sleep mode	Deactivated: Sleep mode is only activated when the battery is in deep discharge. The battery remains available for as long as possible and is ready for backup mode. Activated: Sleep mode is activated when the storage unit has been discharged to the set min. SoC. If sleep mode is active, the battery may not be available for backup mode.
Start SoC for backup mode (%)	If the backup function is to be used, ensure that there is a reserve in the battery so that backup mode can be started should the power fail. For this to happen, the value selected for Min. state of charge and Min. state of charge in the alternative time period should not be less that the start SoC for the Start SoC for backup mode. Example: Min. state of charge (SoC): 50 % Start SoC for backup mode: 40 % Permit discharge in backup mode down to: 10 % Backup mode can only be started once the battery has reached the set Start SoC for backup mode. If the battery SoC is below the set value, backup mode is not possible. In this case, the battery is initially charged from PV.
Permit discharge in backup mode down to (%)	The battery is discharged to the set value. The value must be below the value for Start SoC for backup mode. Backup mode is retained up until this value. Below the set value, only the inverter is powered by the battery to ensure readiness for backup mode. For backup mode, we would recommend planning a reserve for the battery’s minimum battery SoC (e.g. 10 %) so that the battery does not enter deep discharge and the system does not shut down. NOTE! Should the battery SoC fall below the permitted minimum SoC for the battery (depends on battery, usually 3%), the battery is disconnected from the inverter and the storage system shuts down to protect against deep discharge. When this happens, the battery must be manually switched back on again as soon as there is sufficient PV power.

Other battery settings

Parameter	Explanation
Battery use to cover home consumption	Battery discharge as of grid demand of (W) The battery is only used to cover home consumption if the PV power is not sufficient and the grid demand is greater than the set power. (Default value 50 W). Example: If a value of 200 W is set, the battery can only be released to cover the home consumption when the measured grid demand from the public grid exceeds 200 W. The battery is blocked again for home consumption when the grid demand falls 50 W below the set value (in this example 150 W). Coverage of home consumption as of (W) Home consumption is only covered from the PV power and battery available when the set value is exceeded. Below the set value, the battery is fully charged from the PV power available. (Default value 50 W). Example: If a value of 200 W is set, the home consumption is only covered from the PV power and battery available if the measured home consumption exceeds 200 W. The inverter is blocked again for home consumption when consumption falls 50 W below the set value (in this example 150 W).
Storage of excess AC energy from local generation	If there is an additional AC energy source in the local house grid (e.g. an additional PV system or a combined heat and power unit), the AC energy generated can be stored in a battery connected to the PLENTICORE plus. NOTE! The function can only be activated if the energy meter has been installed at the grid connection point (position 2). Activated: The AC energy generated can be stored in the battery. Deactivated: Extra generated AC energy is not stored in the battery.
Battery charging as of grid surplus of [W]	Enter a minimum grid surplus value as of which the battery is charged. (Standard 50 W). Example: If a value of 50 W is set, the battery is charged when feed-in into the public grid (grid surplus) is more than 50 W. Charging to the battery is blocked if the value is below 50 W.

Parameter

Explanation

Battery use to cover home consumption

Battery discharge as of grid demand of (W)

The battery is only used to cover home consumption if the PV power is not sufficient and the grid demand is greater than the set power. (Default value 50 W).

Example: If a value of 200 W is set, the battery can only be released to cover the home consumption when the measured grid demand from the public grid exceeds 200 W. The battery is blocked again for home consumption when the grid demand falls 50 W below the set value (in this example 150 W).

Coverage of home consumption as of (W)

Home consumption is only covered from the PV power and battery available when the set value is exceeded. Below the set value, the battery is fully charged from the PV power available. (Default value 50 W).

Example: If a value of 200 W is set, the home consumption is only covered from the PV power and battery available if the measured home consumption exceeds 200 W. The inverter is blocked again for home consumption when consumption falls 50 W below the set value (in this example 150 W).

Storage of excess AC energy from local generation

If there is an additional AC energy source in the local house grid (e.g. an additional PV system or a combined heat and power unit), the AC energy generated can be stored in a battery connected to the PLENTICORE plus.

NOTE! The function can only be activated if the energy meter has been installed at the grid connection point (position 2).

Activated: The AC energy generated can be stored in the battery.

Deactivated: Extra generated AC energy is not stored in the battery.

Battery charging as of grid surplus of [W]

Enter a minimum grid surplus value as of which the battery is charged. (Standard 50 W).

Example: If a value of 50 W is set, the battery is charged when feed-in into the public grid (grid surplus) is more than 50 W. Charging to the battery is blocked if the value is below 50 W.

Advanced battery options

Parameter	Explanation
Advanced battery options (only possible with service code)	Start battery discharge If the SoC of the battery is very low during initial commissioning, this function can be used to charge the battery to 100% once. The charging process is performed regardless of the energy source. During the process, Service charging is displayed on the inverter. The charging process ends when the SoC reaches 50% if there are no energy meters present (e.g. in the Battery storage with ext. battery control mode).

Parameter

Explanation

Advanced battery options (only possible with service code)

Start battery discharge

If the SoC of the battery is very low during initial commissioning, this function can be used to charge the battery to 100% once. The charging process is performed regardless of the energy source. During the process, Service charging is displayed on the inverter.

The charging process ends when the SoC reaches 50% if there are no energy meters present (e.g. in the Battery storage with ext. battery control mode).