battery_compatibility:freedomwon
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battery_compatibility:freedomwon [2020-08-02 15:54] – Updated formatting and comments on VE Configure warwickchapman | battery_compatibility:freedomwon [2020-08-05 12:08] – [CAN Bus Wiring] added CAN 2 terminals detail. warwickchapman | ||
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====== Victron & Freedom Won LiFePO4 batteries - Freedom Lite ====== | ====== Victron & Freedom Won LiFePO4 batteries - Freedom Lite ====== | ||
+ | ===== Installers Note ===== | ||
+ | |||
+ | **Important: | ||
+ | |||
+ | Please take special and careful note of the section below on "DC bus pre-charging" | ||
===== Introduction ===== | ===== Introduction ===== | ||
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Freedom Won (www.freedomwon.co.za) produces two ranges of LiFePO4 batteries for 48V systems: | Freedom Won (www.freedomwon.co.za) produces two ranges of LiFePO4 batteries for 48V systems: | ||
- | * Freedom Lite Home and Business: Eight models available ranging from the smallest 5kWh model (Freedom Lite Home 5/4) up to the 80kWh model (Freedom Lite Business 80/56) | + | * Freedom Lite Home and Business: Eight models available ranging from the smallest 5kWh model (Freedom Lite Home 5/4) up to the 80kWh model (Freedom Lite Business 80/64) |
- | * Freedom Lite Commercial: | + | * Freedom Lite Commercial: |
//**Note: Refer to Freedom Won website for detailed specification sheets covering all models** | //**Note: Refer to Freedom Won website for detailed specification sheets covering all models** | ||
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// | // | ||
- | //**NOTE**: If a system includes one or more **VE.CAN MPPTs** | + | //**NOTE**: If a system includes one or more **VE.CAN MPPTs** |
===== GX-Device Required ===== | ===== GX-Device Required ===== | ||
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Further to above, the Lite should be sized so as to provide adequate energy capacity in kWh to meet the load demands of the system and to receive most of the excess solar generation each day (for self-consumption installations). | Further to above, the Lite should be sized so as to provide adequate energy capacity in kWh to meet the load demands of the system and to receive most of the excess solar generation each day (for self-consumption installations). | ||
- | //**NOTE**: It is not permissible to install an inverter larger than stated in the Lite specification sheet regardless of whether the “Limit DC Discharge Power” ESS feature in the GX-device is used. For instances where the grid is not available this power limiting feature will not operate and the battery could thus be overloaded, causing it to trip. The Lite will also not be able to limit discharge power in the absence of a grid connection. Lastly, the Lite contains a protection circuit breaker that is only rated to handle the power-up inrush current of the inverter for up to the capacity stated in the specification sheet.// | + | //**NOTE**: It is not permissible to install an inverter larger than stated in the Lite specification sheet regardless of whether the "Limit DC Discharge Power" |
===== Victron-certified Integration ===== | ===== Victron-certified Integration ===== | ||
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The Freedom Lite transmits, amongst others, the following messages to the [[https:// | The Freedom Lite transmits, amongst others, the following messages to the [[https:// | ||
- | - Adaptive Maximum Charge Voltage Set-point – the value transmitted varies from 54.1V to 55.8V depending on the state of balancing on the particulate | + | - Adaptive Maximum Charge Voltage Set-point – the value transmitted varies from 54.8V to 55.8V depending on the state of balancing on the particular |
- Charge Current Limit (CCL) – this is the maximum current that the battery will accept at any given time stated in Amps. This is a secondary control feature behind the more effective maximum charge voltage control method. This value reduces as the battery approaches 100% State of Charge (SoC). The GX-device uses this value to ensure that the combined Victron system of inverter/ | - Charge Current Limit (CCL) – this is the maximum current that the battery will accept at any given time stated in Amps. This is a secondary control feature behind the more effective maximum charge voltage control method. This value reduces as the battery approaches 100% State of Charge (SoC). The GX-device uses this value to ensure that the combined Victron system of inverter/ | ||
- | - Discharge Current Limit (DCL) – this is the maximum discharge current that the battery is prepared to accept at any given time. This value typically decreases as the battery drops below 10% SoC. The Victron inverter cannot enforce a variable DCL unless in ESS mode were an AC input source can be used to supplement the power to the loads. If there is no AC input source the inverter will stop supplying power to the loads as soon as the DCL drops to zero. | + | - Discharge Current Limit (DCL) – this is the maximum discharge current that the battery is prepared to accept at any given time. This value typically decreases as the battery drops below 10% SoC. The Victron inverter cannot enforce a variable DCL unless in ESS mode were an AC input source can be used to supplement the power to the loads. If there is no AC input source the inverter will stop supplying power to the loads as soon as the DCL drops to zero. |
- | - Battery | + | - Additional |
- | - Minimum | + | - Battery |
- | - Battery | + | - Minimum battery voltage |
- | - Battery | + | |
- | - Battery | + | - Battery |
- | - Battery | + | - Battery |
- | - Battery | + | - Battery |
+ | - Battery | ||
+ | - Highest cell voltage | ||
+ | - Lowest cell voltage | ||
+ | - Highest probe temperature | ||
+ | - Lowest probe temperature | ||
+ | - Battery gross capacity | ||
+ | - Number of batteries online | ||
All of the above information can be viewed in the Freedom Lite device sub menus on the GX-device. | All of the above information can be viewed in the Freedom Lite device sub menus on the GX-device. | ||
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If the CAN bus cable is removed or damaged the Victron inverters will shut down within 5 minutes. This prevents continued operation in the absence of communication from the battery. Likewise, the MPPT’s will stop producing power to the DC bus. | If the CAN bus cable is removed or damaged the Victron inverters will shut down within 5 minutes. This prevents continued operation in the absence of communication from the battery. Likewise, the MPPT’s will stop producing power to the DC bus. | ||
+ | |||
+ | ===== DC Bus Pre-charging ===== | ||
+ | |||
+ | **Important: | ||
+ | |||
+ | The inrush current when switching on the battery breaker onto the DC bus is huge. This can cause damage to the breaker over time. So it is a Freedom Won requirement that the DC bus is pre-charged before switching on the battery. This is achieved by switching on the AC input to the inverters – the inverters will use the AC power to pre-charge their capacitors. This will eliminate the huge inrush current. The MPPTs can also be used for pre-charging by switching on the solar panels supply to the MPPTs. | ||
===== CAN Bus Wiring ===== | ===== CAN Bus Wiring ===== | ||
- | The connection of the Lite to the GX-device is extremely simple. A standard **straight through** CAT5e Ethernet cable is required of the desired length, with one end plugged into one of the RJ45 sockets on the Lite and the other end plugged into one of the CAN sockets on the GX-device. Note that the second RJ45 socket in each case must be fitted with an end of line 120Ω resistor. Two are supplied with each GX-device. If multiple batteries are installed in parallel the second RJ45 socket is used to link the next battery in the line onto the CAN Bus network. The termination resistor is installed in the last battery in the CAN Bus line. Refer to Lite installation manual for further information. | + | The connection of the Lite to the GX-device is extremely simple. A standard **straight through** CAT5e Ethernet cable is required of the desired length, with one end plugged into one of the RJ45 sockets on the Lite and the other end plugged into one of the CAN sockets on the GX-device. Note that the second RJ45 socket in each case must be fitted with an end of line 120Ω resistor. Two are supplied with each GX-device. |
- | Correct CAN Bus communication can be verified by observing whether the Freedom Lite battery is presented in the GX-device list under the name “Freedom Lite”. | + | |
+ | **Note:** In the case of the Venus GX or Octo GX, if the VE.CAN ports (RJ45) are being used by MPPTs, the secondary CAN bus needs to be connected using the green terminal blocks. | ||
+ | |||
+ | If multiple batteries are installed in parallel the second RJ45 socket is used to link the next battery in the line onto the CAN Bus network. The termination resistor is installed in the last battery in the CAN Bus line. Refer to Lite installation manual for further information. | ||
+ | |||
+ | Correct CAN Bus communication can be verified by observing whether the Freedom Lite battery is presented in the GX-device list under the name "Freedom Lite". | ||
+ | |||
+ | ===== Victron VE.CAN MPPTs and Freedom Won Batteries ===== | ||
+ | |||
+ | **Note:** In this section, the reference to "Color Control GX" refers only to that specific model of GX device and excludes the rest of the range. | ||
+ | |||
+ | The Freedom Won Battery Management System is configured by default to communicate over CAN bus at a 500kbps baud rate. For systems using a Color Control GX and Victron VE.CAN MPPTs, it is possible to change the baud rate of the battery to 250kbps in order to accommodate the VE.CAN baud rate. **However**, | ||
+ | |||
+ | If there are slave batteries on a system, then there are conflicting CAN messages on the bus, and it is necessary to split the battery on the CAN Bus from the devices on Victron' | ||
+ | |||
+ | Systems with both VE.CAN MPPTs and more than one Freedom Lite battery require a GX device with a dual CAN Bus. The entire GX-device range with the exception of the Color Control GX and the GX built into the MultiPlus II GX have dual CAN buses. | ||
+ | |||
+ | Where batteries need to be configured with a profile accommodating 250kbps baud rate for the MPPTs on the CAN Bus (the standard is 500kbps), the change can be made either: | ||
+ | - at the time of ordering by requesting that Freedom Won dispatches the Lite from the factory with baud set to 250kbps; or | ||
+ | - the battery can be reconfigured remotely by Freedom Won with a local PC connected to the battery. | ||
+ | |||
+ | Please contact [[support@freedomwon.co.za|support@freedomwon.co.za]] for assistance. | ||
===== VEConfigure 3 Settings ===== | ===== VEConfigure 3 Settings ===== | ||
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* '' | * '' | ||
- | {{: | + | {{: |
☛ Charger Settings Tab: Set Battery Type as " | ☛ Charger Settings Tab: Set Battery Type as " | ||
- | {{: | + | {{: |
☛ Set Charger Settings. | ☛ Set Charger Settings. | ||
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* '' | * '' | ||
- | {{: | + | {{: |
☛ When setting up the ESS Assistant select LiFePO4 battery and enter the Ah value for the Lite (or the combination of Lite’s for a parallel battery system) as per the Ah rating provided in the Lite specification sheet eg. Lite 5/4 = 100Ah. | ☛ When setting up the ESS Assistant select LiFePO4 battery and enter the Ah value for the Lite (or the combination of Lite’s for a parallel battery system) as per the Ah rating provided in the Lite specification sheet eg. Lite 5/4 = 100Ah. | ||
- | {{: | + | {{: |
- | {{: | + | {{: |
- | ☛Select – Do not change battery type | + | ☛ Select – Do not change battery type |
- | {{: | + | {{: |
☛Sustain Voltage = 50V | ☛Sustain Voltage = 50V | ||
- | {{: | + | {{: |
| | ||
- | ☛Enter Dynamic Cut-off values as below (usually the Lite will override these values, however they should be entered correctly for redundancy) | + | ☛ Enter Dynamic Cut-off values as below (usually the Lite will override these values, however they should be entered correctly for redundancy) |
- | {{: | + | {{: |
- | ☛Restart Offset = 1,2V | + | ☛ Restart Offset = 2.0V |
- | {{: | + | {{: |
- | ☛Go back to General and disable battery monitor again. | + | ☛ Go back to General and disable battery monitor again. |
===== GX-Device Venus OS Configuration ===== | ===== GX-Device Venus OS Configuration ===== | ||
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It is very important that the following settings are entered correctly for proper functioning of the Lite communication interface: | It is very important that the following settings are entered correctly for proper functioning of the Lite communication interface: | ||
- | ☛Settings → Services → CAN-bus Profile → CAN-bus BMS (500kbit/s) | + | ☛ Settings → Services → CAN-bus Profile → CAN-bus BMS (500kbit/s) |
//**Note**: For systems with VE Can MPPT’s, select 250kbit/s and ensure Lite profile is also set for 250kbit/s (check with Freedom Won or your Freedom Won distributor).// | //**Note**: For systems with VE Can MPPT’s, select 250kbit/s and ensure Lite profile is also set for 250kbit/s (check with Freedom Won or your Freedom Won distributor).// | ||
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{{: | {{: | ||
- | ☛Confirm that the Freedom Lite is showing in the device list as per below | + | ☛ Confirm that the Freedom Lite is showing in the device list as per below |
- | ☛Settings → System Setup → Switch on DVCC and SVS, check that BMS Control is “On” | + | ☛ Settings → System Setup → Switch on DVCC and SVS, check that BMS Control is “On” |
{{: | {{: | ||
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{{: | {{: | ||
- | ☛Freedom Lite (device list) → Parameters → Confirm that the Charge Current Limit and Discharge Current Limit are as per the Lite specifications (Note: if the battery is fully charged the CCL may be reduced. Check that the voltage target is within the range 54,1V to 55,8V (Note: below about 95% SoC the value reflected should be 55,7 or 55,8V. For a fully charged battery this value should range from 55,0V to 55,8V depending on the state of balancing of the cells in the Lite. | + | ☛ Freedom Lite (device list) → Parameters → Confirm that the Charge Current Limit and Discharge Current Limit are as per the Lite specifications (Note: if the battery is fully charged the CCL may be reduced. Check that the voltage target is within the range 54.8V to 55.8V (Note: below about 95% SoC the value reflected should be 55.7 or 55.8V. For a fully charged battery this value should range from 55.0V to 55.8V depending on the state of balancing of the cells in the Lite. |
===== MPPT Configuration ===== | ===== MPPT Configuration ===== |
battery_compatibility/freedomwon.txt · Last modified: 2024-02-08 14:12 by warwickchapman