Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56

From 7.1 to 8.1 From 77.3 to 77.4

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To version 77.3

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@@ -1,5 +1,5 @@
  (% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
--= Settings =
++= Configuration =
  (% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
  == Control ==
@@ -12,46 +12,35 @@
  In this section:
--* Cell capacity – nominal capacity of cells, Ah;
--* Cell resistance – nominal (maximum) internal resistance of the cells, Ohm;
--* Relax time (after charging) – a relaxation time after charging, second;
--* Relax time (atfer discharging) – a relaxation time after discharging, second;
--* Reset parameters – a command to reset cells state of charge, capacity, and resistance;
--* Method of calculating the battery voltage:
--** Summation of cell voltages – the overall voltage is calculated as on sum of all cells in the battery;
--** Using voltage before contactors – the overall voltage is estimated as voltage before contactors measured by BMS.
++* **Cell capacity** – nominal capacity of cells, Ah;
++* **Cell resistance** – nominal (maximum) internal resistance of the cells, Ohm;
++* **Connection of cells:**
++** **Serial **– all cells are connected in series in a single string.
++** **Parallel-Serial **– cells are grouped in parallel and serial items;
++* **Parallel-Serial: Number of Logic devices in a chain**;
++* **Parallel-Serial: Number of parallel chains in a block**;
++* **Parallel-Serial: Number of serial blocks in a string**;
++* **Relax time (after charging)** – a relaxation time after charging, second;
++* **Relax time (atfer discharging)** – a relaxation time after discharging, second;
++* **Reset SOC** – a command to reset cells state of charge. New cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section;
++* **Reset resistance** – a command to reset cells resistance to “Cell resistance” value;
++* **Reset capacity** – a command to reset cells capacity to “Cell capacity” value;
++* **Method of calculating the battery voltage***:
++** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery;
++** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS.
--The values “Capacity”, “Resistance”, “Cycles” are used to calculate the SOC of cells and the battery.
++The **"Parallel-Serial"** connection works as follows: a bunch of serial connected Logics are grouped into chains. A bunch of parallel connected chains are grouped to blocks. A bunch of serial connected blocks are grouped into string. By configuring the corresponding settings it is possible to create a complex string configuration. Current through each chain will be estimated as a fraction of overall current accordingly to the number of chains in a block.
--The values of “Relax time” are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery.
++The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery.
--The “Reset parameters” will reset:
++The values of **“Relax time”** are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery.
--* state of charge (new cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section);
--* cell resistance to “Cell resistance” value;
--* battery capacity to “Cell capacity” value.
++The **“Reset SOC”, "Reset resistance" **and **"Reset capacity"** command is used for starting-up and adjustment of the battery.
--The “Reset parameters” command is used for starting-up and adjustment of the battery.
--
  === SOC estimation ===
--The BMS Main 3 device calculates the state of charge of the battery (SOC) using two algorithms:
++The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell, and then the overall battery SOC, by using following algorithms:
--* by open circuit voltage;
--* by voltage and current.
--
--It is recommended to use the algorithm of calculation of SOC by voltage and current.
--
--To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
--
--[[image:1733322611549-423.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="148" width="800"]]
--
--The following estimation algorithms supported:
--
--* Voltage – by open circuit voltage;
--* Current and voltage (simplified) – recommended for LFP cells;
--* Current and voltage (enhanced) – recommended for NMC cells.
--
  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
  The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
@@ -61,31 +61,34 @@
  The **“Current and voltage (enhanced)” **SOC calculation algorithm differs from the simplified algorithm by online correction of the effective capacity. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
--To change the algorithm for calculating the Final SOC, select the "Control → SOC estimation → Final SOC" section:
++To change the algorithm for calculating the SOC, select the "Control → SOC estimation" section:
  [[image:1733322611551-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="148" width="800"]]
--The following calculation methods are supported (“Final SOC”):
++In this section:
--* Minimal SOC – the battery SOC is assumed to be the minimum SOC among the cells;
--* Average SOC – the battery SOC is taken equal to the arithmetic average of the cell SOC;
--* Min-Max SOC – the battery SOC is taken based on the minimum and maximum SOC of the cells (recommended method).
++* **Algorithm:**
++** **Voltage **– by open circuit voltage;
++** **Current and voltage (simplified)** – recommended for LFP cells;
++** **Current and voltage (enhanced)** – recommended for NMC cells:
++* **Final SOC** – method of calculating overall SOC of battery:
++** **Minimal SOC** – the battery SOC is assumed to be the minimum SOC among the cells;
++** **Average SOC** – the battery SOC is taken equal to the arithmetic average of the cell SOC;
++** **Min-Max SOC** – the battery SOC is calculated based on the minimum and maximum SOC of the cells (recommended). Final SOC will be a) 100% if __any cell__ has 100% SOC, b) 0% if __any cell__ has 0% SOC;
++** **Max-Min SOC** – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if __all cells__ have 100% SOC, b) 0% if __all// //cells__ have 0% SOC.
++* **Scale the final SOC** – a flag to scale the battery SOC by the following values;
++* **SOC corresponding to 0%** – the battery SOC that sets to be 0%;
++* **SOC corresponding to 100%** – the battery SOC that sets to be 100%.
++* **Uocv (open-circuit voltage) table** – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
++* **Linear zone** - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
++** **Linear zone: point 1** – starting point of the Uocv linear zone;
++** **Linear zone: point 2** – ending point of the Uocv linear zone;
++* **Coulomb counting correction (temperature)** – the dependence of battery capacity on temperature;
++* **Coulomb counting correction (cycles)** – the dependence of battery capacity on the number of charge-discharge cycles.
--Other parameters:
--
--* Scale the final SOC – a flag to scale the battery SOC by the following values;
--* SOC corresponding to 0% – the battery SOC that sets to be 0%;
--* SOC corresponding to 100% – the battery SOC that sets to be 100%.
--* Uocv (open-circuit voltage) table – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
--* Linear zone - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
--** Linear zone: point 1 – starting point of the Uocv linear zone;
--** Linear zone: point 2 – ending point of the Uocv linear zone;
--* Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
--* Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
--
  === SOC correction ===
--The BMS Main 3 device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
++The BMS Main 3 / BMS Main 2R device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
@@ -93,29 +93,55 @@
  In this section:
--* Enable – a flag to enable the SOC correction;
--* Shutdown period – a time the battery is off, day. If the BMS detects on its startup that it was off during the “Shutdown period” time, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t);
--* Correction period – a period of correcting the battery SOC, day. If the BMS detects that the last correction was more than the “Correction period” ago, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t) and tunes it gradually during the “SOC change time”.
--* SOC change time – a duration of the linear changing the battery SOC to the value calculated by the correction algorithm, minute;
--* Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
--* Last correction timestamp – time when last correction was made.
++* **Enable **– a flag to enable the SOC correction;
++* **Shutdown period** – a time the battery is off, day. If the BMS detects on its startup that it was off during the “Shutdown period” time, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t);
++* **Correction period** – a period of correcting the battery SOC, day. If the BMS detects that the last correction was more than the “Correction period” ago, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t) and tunes it gradually during the “SOC change time”.
++* **SOC change time** – a duration of the linear changing the battery SOC to the value calculated by the correction algorithm, minute;
++* **Ignore the linear zone** – a flag to ignore linear SOC zone while correction (recommended to be unset);
++* **Last correction timestamp** – time when last correction was made.
++=== SOH estimation ===
++
++The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
++
++In **"By effective capacity" **mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
++
++In** "By total charge–"** mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed data about cell health depending of amount of discharge rate to configure the linear function.
++
++To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
++
++[[image:1765447975228-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]In this section:
++
++* **Algorithm:**
++** **By effective capacity;**
++** **By total charge–;**
++* **Total charge: Charge–** –  total amount of charge– for expected SOH;
++* **Total charge: SOH** – expected SOH value at the total amount of charge–.
++
  === Resistance estimation ===
  Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value
--R = (U-U,,ocv,,) / I,,stable,,,
++{{formula fontSize="SMALL" imageType="PNG"}}
++R = \frac{U-U_{ocv}}{I_{stable}}
++{{/formula}}
--where U is the cell voltage measured in the charge or discharge state, V; U,,ocv,, is the cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, – stabilized current through the cell in the state of charge or discharge.
++where U — the cell voltage measured in the charge or discharge state, V; U,,ocv,, — cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, — stabilized current through the cell in the state of charge or discharge.
  The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
--R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
++{{formula fontSize="SMALL"}}
++R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
++{{/formula}}
--(Q,,max,, is the maximum cell capacity),
++provided that
--where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
++{{formula fontSize="SMALL"}}
++| I_{stable2}-I_{stable1} | > 0.2 × Qmax
++{{/formula}}
++where Q,,max,, — the maximum cell capacity,U,,2,, — voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, — the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
++
  The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I.
  To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
@@ -124,16 +124,18 @@
  In this section:
--* Current stabilization time, millisecond;
--* Maximum calculation period – maximum time between resistance measurements. If more time has elapsed since the last determination of the stabilized current I,,stable,, than is determined in this field, the resistance calculation is not performed, second;
--* Maximum resistance factor – the coefficient of calculation of the maximum acceptable resistance of the cell;
--* Minimum SOC – minimum cell SOC value for resistance calculation;
--* Maximum SOC – maximum cell SOC value for resistance calculation.
++* **Current stabilization time**, millisecond;
++* **Maximum calculation period** – maximum time between resistance measurements. If more time has elapsed since the last determination of the stabilized current I,,stable,, than is determined in this field, the resistance calculation is not performed, second;
++* **Maximum resistance factor** – the coefficient of calculation of the maximum acceptable resistance of the cell;
++* **Minimum SOC** – minimum cell SOC value for resistance calculation;
++* **Maximum SOC** – maximum cell SOC value for resistance calculation.
--The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
++The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance / 2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
  === Low SOC (signal) ===
++The "Low SOC" is indicative signal that can be assigned to a discrete output or a power switch.
++
  To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section:
  [[image:1733322624660-513.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="116" width="800"]]
@@ -140,12 +140,12 @@
  In this section:
--* Enable – a flag to enable signal generation;
--* Minimum SOC, %;
--* Tolerant SOC, %;
--* Delay before setting the signal, second;
--* Delay before clearing the signal, second;
--* Lock – lock the signal until the device is reset.
++* **Enable **– a flag to enable signal generation;
++* **Minimum SOC**, %;
++* **Tolerant SOC**, %;
++* **Delay before setting the signal**, second;
++* **Delay before clearing the signal**, second;
++* **Lock** – lock the signal until the device is reset.
  Signal generation conditions:
@@ -155,10 +155,10 @@
  * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
--The "Low SOC signal" is indicative and can be output to a discrete output or a power switch.
--
  === High charging current (signal) ===
++The "High charging current" is indicative signal that can be output to a discrete output or a power switch.
++
  To change the parameters of the generation high-current signal, select the "Control → High charging current (signal)" section:
  [[image:1733322624661-915.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]]
@@ -165,12 +165,12 @@
  In this section:
--* Enable – a flag to enable signal generation;
--* Maximum charging current, А;
--* Tolerant charging current, А;
--* Delay before setting the signal, second;
--* Delay before clearing the signal, second;
--* Lock – lock the signal until the device is reset.
++* **Enable **– a flag to enable signal generation;
++* **Maximum charging current**, А;
++* **Tolerant charging current**, А;
++* **Delay before setting the signal**, second;
++* **Delay before clearing the signal**, second;
++* **Lock **– lock the signal until the device is reset.
  Signal generation conditions:
@@ -180,224 +180,305 @@
  * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
--The "High charging current" signal is indicative and can be output to a discrete output or a power switch.
--
  === Charge map ===
--The BMS Main 3 device calculates the maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
++The BMS Main 3 / BMS Main 2R device calculates the maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
  Calculated current values are sent to a charger or an intellectual load over the CAN bus. External devices based on received data provide correct battery operation.
  To configure parameters for determining the charge current limit, select the "Control → Charge map" section:
--[[image:1733322637793-171.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="177" width="800"]]
++[[image:1735064362593-844.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
  In this section:
--* Enable – a flag to start calculation of the charge current limit;
--* Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
--* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
--* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current Kcs depending on SOC and battery temperature;
--* Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
--* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on contactor temperature;
--* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
--* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current Kcv depending on maximum cell voltage;
--* Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
--* Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current Kct depending on maximum cell temperature;
--* Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
++* **Enable **– a flag to start calculation of the charge current limit;
++* **Maximum charge current** – a maximum allowable value of the charge current (under normal conditions), A;
++* **Rate of change** – a rate of change the current limit to a new value (0 is for immediate change), A/s;
++* **Option 1: Limit charge current by the battery SOC and temperature** – a flag to enable correction of maximum allowable charging current** Kcs** depending on __maximum cell SOC__ and battery temperature;
++* **Option 1: SOC x Temperature x Factor** – the dependence of the correction factor on SOC and battery temperature;
++* **Option 2: Limit charge current by the contactor temperature** – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
++* **Option 2: Contactor temperature x Factor** – the dependence of the correction factor on SOC and contactor temperature;
++* **Option 3: Limit charge current by the maximum cell voltage** – a flag to enable correction of maximum allowable charging current **Kcv** depending on __the maximum cell U,,ocv,, voltage__ (corrected due to current and cell resistance)
++* **Option 3: Cell voltage x Factor** – the dependence of the correction factor on maximum cell voltage;
++* **Option 4: Limit charge current by the cell temperature** – a flag to enable correction of maximum allowable charging current **Kct** depending on maximum cell temperature;
++* **Option 4: Cell temperature x Factor** – the dependence of the correction factor on maximum cell temperature.
  Value of the charge current limit at given SOC, temperature, contactors temperature, maximum cell voltage and maximum cell temperature is calculated as follows:
--Charging current limit = Maximum charging current × Kcs × Kcc × Kcv × Kct
++**Charge current limit = Maximum charge current × Kcs × Kcc × Kcv × Kct**
  === Discharge map ===
--The BMS Main 3 device calculates the maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
++The BMS Main 3 / BMS Main 2R device calculates the maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
  Calculated current values are sent to a charger or an intellectual load over the CAN bus.
  To configure parameters for determining the discharge current limit, select the "Control → Discharge map" section:
--[[image:1733322637795-310.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="800"]]
++[[image:1735064399985-526.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="800"]]
  In this section:
--* Enable – a flag to start calculation of the discharge current limit;
--* Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
--* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
--* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current Kds depending on SOC and temperature;
--* Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
--* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on contactor temperature;
--* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
--* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current Kdv depending on minimum cell voltage;
--* Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
--* Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current Kdt depending on maximum cell temperature;
--* Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
++* **Enable **– a flag to start calculation of the discharge current limit;
++* **Maximum discharge current** – a maximum allowable value of the discharge current (under normal conditions), A;
++* **Rate of change** – a rate of change the current limit to a new value (0 is for immediate change), A/s;
++* **Option 1: Limit discharging current by the battery SOC and temperature** – a flag to enable correction of maximum allowable discharging current **Kds **depending on __minimum cell SOC__ and temperature;
++* **Option 1: SOC x Temperature x Factor** – the dependence of the correction factor on SOC and battery temperature;
++* **Option 2: Limit discharge current by the contactor temperature** – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
++* **Option 2: Contactor temperature x Factor** – the dependence of the correction factor on SOC and contactor temperature;
++* **Option 3: Limit discharge current by the cell voltage** – a flag to enable correction of maximum allowable discharging current **Kdv** depending on __the minimum cell U,,ocv,, voltage__ (corrected due to current and cell resistance)
++* **Option 3: Cell voltage x Factor** – the dependence of the correction factor on minimum cell voltage;
++* **Option 4: Limit discharge current by the cell temperature** – a flag to enable correction of maximum allowable discharging current **Kdt** depending on maximum cell temperature;
++* **Option 4: Cell voltage x Factor** – the dependence of the correction factor on minimum cell temperature.
  Value of the discharge current limit at given SOC, temperature, contactors temperature, minimum cell voltage and maximum cell temperature is calculated as follows:
--Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv × Kdt
++**Discharge current limit = Maximum discharge current × Kds × Kdc × Kdv × Kdt**
  === Charge map (PEAK & CONTINUOUS) ===
--The BMS Main 3 has an alternative algorithm for the maximum allowed charging current based on peak and continuous battery operating modes.
++The BMS Main 3 / BMS Main 2R has an alternative algorithm for the maximum allowed charging current based on peak and continuous battery operating modes.
  To configure parameters for determining the charge current limit, select the "Control → Charge map (PEAK & CONTINUOUS)" section:
--[[image:1733322637796-187.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
++[[image:1735064434321-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
  In this section:
--* Enable – a flag to start calculation of the charge current limit;
--* Maximum PEAK charge current – a maximum peak charge current (under normal conditions), A;
--* Maximum CONTINUOUS charge current – a maximum continuous charge current (under normal conditions), A;
--* PEAK: SOC x Temperature x Factor – the dependence of the correction factor for peak current K,,cp,, on SOC and battery temperature;
--* CONTINUOUS: SOC x Temperature x Factor – the dependence of the correction factor for continuous current K,,cc,, on SOC and battery temperature;
--* PEAK time – a time for peak current to be allowed, s;
--* Sliding time – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
--* Waiting time – a time for peak current to be prohibited, s.
++* **Enable **– a flag to start calculation of the charge current limit;
++* **Maximum PEAK charge current** – a maximum peak charge current (under normal conditions), A;
++* **Maximum CONTINUOUS charge current** – a maximum continuous charge current (under normal conditions), A;
++* **PEAK: SOC x Temperature x Factor** – the dependence of the correction factor for peak current K,,cp,, on SOC and battery temperature;
++* **CONTINUOUS: SOC x Temperature x Factor** – the dependence of the correction factor for continuous current K,,cc,, on SOC and battery temperature;
++* **PEAK time** – a time for peak current to be allowed, s;
++* **Sliding time** – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
++* **Waiting time** – a time for peak current to be prohibited, s.
  The maximum charging current value equals to the peak or continuous current according to the following diagram:
  [[image:1733322717451-608.png||data-xwiki-image-style-alignment="center"]]
--I,,peak,, = Maximum PEAK charge current × K,,cp,,
++**I,,peak,, = Maximum PEAK charge current × K,,cp,,**
--I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,
++**I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,**
--
  === Discharge map (PEAK & CONTINUOUS) ===
--The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
++The BMS Main 3 / BMS Main 2R has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
  To configure parameters for determining the discharge current limit, select the "Control → Discharge map (PEAK & CONTINUOUS)" section:
--[[image:1733322735595-661.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
++[[image:1735064454708-345.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
  In this section:
--* Enable – a flag to start calculation of the discharge current limit;
--* Maximum PEAK discharge current – a maximum peak discharge current (under normal conditions), A;
--* Maximum CONTINUOUS discharge current – a maximum continuous discharge current (under normal conditions), A;
--* PEAK: SOC x Temperature x Factor – the dependence of the correction factor for peak current K,,dp,, on SOC and battery temperature;
--* CONTINUOUS: SOC x Temperature x Factor – the dependence of the correction factor for continuous current K,,dc,, on SOC and battery temperature;
--* PEAK time – a time for peak current to be allowed, s;
--* Sliding time – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
--* Waiting time – a time for peak current to be prohibited, s.
++* **Enable **– a flag to start calculation of the discharge current limit;
++* **Maximum PEAK discharge current** – a maximum peak discharge current (under normal conditions), A;
++* **Maximum CONTINUOUS discharge current** – a maximum continuous discharge current (under normal conditions), A;
++* **PEAK: SOC x Temperature x Factor** – the dependence of the correction factor for peak current K,,dp,, on SOC and battery temperature;
++* **CONTINUOUS: SOC x Temperature x Factor** – the dependence of the correction factor for continuous current K,,dc,, on SOC and battery temperature;
++* **PEAK time** – a time for peak current to be allowed, s;
++* **Sliding time** – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
++* **Waiting time** – a time for peak current to be prohibited, s.
  The maximum discharging current value equals to the peak or continuous current according to following diagram:
  [[image:1733322753429-968.png||data-xwiki-image-style-alignment="center"]]
--I,,peak,, = Maximum PEAK discharge current × K,,dp,,
++**I,,peak,, = Maximum PEAK discharge current × K,,dp,,**
--I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,
++**I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,**
--=== Charge ===
++=== Main contactor ===
--There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.
++The BMS Main 3 / BMS Main 2R device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors.
--The device supports three charge control algorithms:
++The Main contactor algorithm supports the following modes:
--* Always on – charging is always allowed;
--* On charger connected – charging is allowed when there is a signal “Charger connected”;
--* On charge request – charging is allowed when there is a signal “Charge request”.
++In **“Always on”** mode main contactor closes if all the following is true:
--If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors appears:
++* Other contactors are open;
++* There are __no errors__ from the "Errors 1, 2 ..." bitfileds.
--* Overvoltage;
--* Overcurrent;
--* High temperature (CH);
--* Low temperature (CH);
--* HYG offline (optional);
--* Combilift offline (optional);
--* Spirit offline (optional);
--* Spirit charger error (optional);
--* Short circuit (optional);
--* High contactor temperature (optional);
--* CH contactor cycles error;
--* Precharge error (optional);
--* Critical error
++and opens if all the following is true:
--or one of the signals:
++* Other contactors are open;
++* There is __an error__ from the the "Errors 1, 2 ..." bitfileds.
--* Service reset
--* Power down request
--* Inhibit charging
++In **“Automatic”** mode, the main contactor closes by internal algorithms at the same time with other contactors.
++In **“On demand”** mode, the main contactor closes by external the “Close Main contactor” request.
++
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Main **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
++
++To change the parameters of the main contactor, select the "Control → Main contactor" section:
++
++[[image:1735064488658-863.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
++
++In this section:
++
++* **Enable **– a flag to enable the main contactor control;
++* **Algorithm** – main contactor control algorithm:
++** **Always on** – contactor is always closed;
++** **Automatic** – contactor closes by internal charge and discharge algorithms;
++** **On demand** – contactor is closed by an external request;
++* **Time to keep the contactor closed before closing the others** – a time for other contactors to be open after the main contactor is closed;
++* **Delay before opening the contactor** – a time which is used to detect conditions for opening the contactor, s;
++* **Keep the contactor open until the device is restarted** – a flag for keeping the main contactor open until the system is reset;
++* **Errors 1, 2 to open the main contactor** – bitfields to choose the errors which will open the main contactor.
++
++=== Charging status ===
++
++To change the parameters of charging process status, select the "Control → Charging status" section:
++
++[[image:1771432488941-251.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="800"]]
++
++In this section:
++
++* **Current to set the "Charging current present"** – a current level to generate the "Charging current present" signal, A;
++* **Current to clear the "Charging current present"** – a current level to clear the "Charging current present" signal, A;
++* **Voltage to clear the “Ready to charge”** – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
++* **Voltage to reset the “Ready to charge”** – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
++* **Use actual voltage to generate the "Ready to charge" signal** – a flag to disable voltage correction for "Ready to charge" signal;
++* **Treat negative currents as zero currents for generating the "Ready to charge" signal** – a flag to disable voltage correction for "Ready to charge" signal at discharging current;
++* **Delay before recharging** – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0;
++* **Check the 'Charge current limit' value to generate the 'Ready to charge'** – a flag to enable check of "Charging current limit" to generate the "Ready to charge" signal;
++* **Charge current limit to clear the 'Ready to charge'** – a threshold charging current limit value, A; if the limit is //above //this level, the “Ready to charge” signal is cleared;
++* **Charge current limit to set the 'Ready to charge'** – a tolerant charging current limit value, A; if the limit is //below //this level, the “Ready to charge” signal is set;
++* **Errors 1, 2 to clear the "Ready to charge"** – bitfields to choose the errors which will clear the "Ready to charge" signal.
++
++(% class="box infomessage" %)
++(((
++**Note:** The "Allow charging" signal activates under two independent conditions:
++1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and
++2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
++)))
++
++=== Discharging status ===
++
++To change the parameters of discharging process status, select the "Control → Discharging status" section:
++
++[[image:1771431570393-551.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="800"]]
++
++In this section:
++
++* **Current to set the "Discharging current present"** – a current level to generate the "Discharging current present" signal, А;
++* **Current to clear the "Discharging current present"** – a current level to clear the "Discharging current present" signal, А;
++* **Voltage to clear the “Ready to discharge”** – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
++* **Voltage to reset the “Ready to discharge”** – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
++* **Use actual voltage to generate the "Ready to discharge" signal** – a flag to disable voltage correction for "Ready to discharge" signal;
++* **Treat positive currents as zero currents for generating the "Ready to discharge" signal** – a flag to disable voltage correction for "Ready to discharge" signal at charging current;
++* **Check the 'Discharge current limit' value to generate the 'Ready to discharge'** – a flag to enable check of "Discharging current limit" to generate the "Ready to discharge" signal;
++* **Discharge current limit to clear the 'Ready to discharge'** – a threshold discharging current limit value, A; if the limit is //above //this level, the “Ready to discharge” signal is cleared;
++* **Discharge current limit to set the 'Ready to discharge'** – a tolerant discharging current limit value, A; if the limit is //below //this level, the “Ready to discharge” signal is set;
++* **Clear the 'Ready to discharge' signal if the 'Low SOC' signal is set**;
++* **Errors 1, 2 to clear the "Ready to discharge"** – bitfields to choose the errors which will clear the "Ready to discharge" signal.
++
++=== Precharge ===
++
++The BMS Main 3 / BMS Main 2R device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor.
++
++BMS Main 3 can detect errors while pre-charging the load capacity by monitoring **the current and voltage difference** before and after contactors.
++
++BMS Main 2R can detect errors while pre-charging the load capacity **only by monitoring the current**.
++
++In **simple **mode precharge contactor closes a "Precharge time" before the closing of Charge or Discharge contactors and opens after the same amount of time after closing them.
++
++In **enhanced **mode precharge contactor will wait until the current of voltage difference requirements are met and close the Charge or Discharge contactors only after that. If waiting time is greater than "Precharge time" value, an error will be generated. Precharge contactor will open after "Precharge time" after closing the Charge of Discharge contactors.
++
++Also BMS Main 3 / BMS Main 2R can measure the power dissipated on precharge resistor and generate an error if it is greater than configured limit.
++
++To change the parameters of precharge contactor, select the "Control → Precharge" section:
++
++[[image:1750328428183-819.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="800"]]
++
++* **Precharge current threshold to finish precharging **– a minimum current value at which precharging process assumed to be finished, A;
++* **Check voltages before and after contactors to finish precharging **– a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
++* **Minimum voltage difference to finish precharging** – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
++* **Keep the precharging relay closed until precharge is finished** – a flag to ignore the Precharge time and wait precharging to finish before open precharge relay;
++* **Number of precharging attempts** – maximum number of precharging attempts before setting the "Precharge error";
++* **Delay before current measurement** – a delay before first current measurement after closing precharge, millisecond;
++* **Precharge time **– a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
++* **Relaxation between attempts **– a duration between precharge attempts, millisecond;
++* **Check the power dissipated in the preacharge resistor** - a flag to enable the calculation of power dissipated in precharge resistor;
++* **Precharge resistor resistance**, Ohm;
++* **Maximum allowable power dissipated in the resistor**, W;
++* **Delay before setting the "Precharge error" when checking power**, millisecond;
++* **Delay before clearing the "Precharge error"**, second;
++* **Lock the "Precharge error"** – a flag to block the error until the device is restarted.
++
++“Precharge error” generation conditions if any of the following is true:
++
++* the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts";
++* voltages before and after contactors are not equal during the "Precharge time" after "Number of precharging attempts";
++* power dissipated on the precharge resistor is above the maximum value during the “Delay before setting the 'Precharge error' when checking power” time.
++
++(% class="box warningmessage" %)
++(((
++Behavior of contactors at “Precharge error” is configured in corresponding contactor settings!
++)))
++
++=== Charge ===
++
++There are two signals that serve charging the battery: "Charging" and "Allow charging". With the help of the "Allow charging" signal, the BMS commands the charger to start or stop charging.
++
++BMS Main 3 / BMS Main 2R supports three charge control algorithms:
++
++If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
++
++* Service reset;
++* Power down request;
++* Inhibit charging,
++
  both contactors are open (no current flows).
  When the algorithm "**On charger connected**" is selected, the control is performed as follows:
--* If there is a signal “Charger connected” and there are no errors (see the list above), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
--* If the signal “Charger connected” disappears, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
--* If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
--* If errors in the list above occur the charging contactor and allow charging contactor open.
++* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
++* If the signal “Charger connected” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens.
  When the "**On charge request**" algorithm selected, the control is performed as follows:
--* If there is a signal “Charge request” and there are no errors (see the list above), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
--* If the signal “Charge request” disappears, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
--* If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
--* If errors in the list above occur the charging contactor and allow charging contactor open.
++* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
++* If the signal “Charge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
--Note – When errors occur in the system, the charging contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Charge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
--[[image:1733322798914-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="327" width="800"]]
++[[image:1735063563460-549.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="262" width="800"]]
  In this section:
--* Enable – a flag to activate the charge control;
--* Algorithm:
--** Always on – charging is always allowed;
--** On charger connected – charging is allowed when there is a signal “Charger connected”;
--** On charge request – charging is allowed when there is a signal “Charge request”;
--* Current corresponding to charging – a current level to generate the "Charging current present" signal, A;
--* Current corresponding to no charging – a current level to clear the "Charging current present" signal, A;
--* Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond;
--* Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond;
--* Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
--* Custom delay: <error> – specific error delay, millisecond;
--* Switch off the charging contactor on errors without delay – a flag to protectively open the charging contactor without a delay. In the opposite case, when an error is detected, the charging contactor opens always with the delay “Delay before stopping charging”;
--* Control the precharging contactor – a flag that allows control of the precharging contactor;
--* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
--* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
--* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0.
++* **Enable **– a flag to activate the charge control;
++* **Algorithm**:
++** **Always on** – charging is always allowed;
++** **On charger connected** – charging is allowed when there is a signal “Charger connected”;
++** **On charge request** – charging is allowed when there is a signal “Charge request”;
++* **Allow charging only when the "Ready to charge" signal is set** – charging contactor will open if "Ready to charge" signal is cleared;
++* **Delay before starting charging** – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond;
++* **Delay before stopping charging** – a time delay T,,off,, before opening the charging contactor, millisecond;
++* **Control the precharging contactor** – a flag that allows control of the precharging contactor while closing the charge contactor (see [[Precharge>>path:#HPrecharge]]);
++* **Errors 1, 2 to open the charging contactor** – bitfields to choose the errors which will open the charging contactor;
++* **Use custom delays before stopping charging (on errors)** – a flag to enable manual settings of time delays T,,off,, for specific errors;
++* **Custom delay: <error>** – delay for specific error, millisecond;
++* **Switch off the charging contactor on errors without delay** – a flag to protectively open the charging contactor without a delay. In the opposite case, when an error is detected, the charging contactor opens always with the delay “Delay before stopping charging”;
--Note – The allow charging contactor closes under two independent conditions: 1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
--
  === Discharge ===
--The device controls the discharging contactor to connect battery to the load.
++The BMS Main 3 / BMS Main 2R device controls the discharging contactor to connect battery to the load.
--The device supports three algorithms to control battery discharging:
++BMS Main 3 / BMS Main 2R supports three algorithms to control battery discharging:
--* Always on – load is always connected;
--* On charger disconnected – load is connected when there is no signal “Charger connected”;
--* On discharge request – load is connected when there is signal “Discharge request”.
++When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
--When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors appears:
--
--* Undervoltage;
--* Overvoltage (optional);
--* Overcurrent;
--* High temperature (DCH);
--* Low temperature (DCH) (optional);
--* HYG offline (optional);
--* Combilift offline (optional);
--* Spirit offline (optional);
--* Spirit charger error (optional);
--* Short circuit (optional);
--* High contactor temperature (optional);
--* Unallowable charging;
--* DCH contactor cycles error;
--* Precharge error (optional);
--* Critical error
--
--or one of the signals:
--
  * Service reset
  * Power down request
  * Inhibit discharging
@@ -406,141 +406,125 @@
  If the algorithm "**On charger disconnected**" is selected, the control is performed as follows:
--* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the list above), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Charger connected” appears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
++* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
++* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
  When the "**On discharge request**" algorithm selected, the control is performed as follows:
--* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the list above), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Discharge request” disappears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
++* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
++* If the signal “Discharge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
--Note – In case of errors in the system operation, the opening of the discharging contactor is performed either immediately or with a delay T,,off,, (depends on the settings described below).
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
--The device supports controlling the precharging contactor. The duration of switching on the precharging contactor before closing the discharging (load) contactor is adjusted.
--
  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
--[[image:1733323750262-841.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="360" width="800"]]
++[[image:1735064038329-836.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="273" width="800"]]
  In this section:
--* Enable – a flag to activate the discharge control;
--* Algorithm:
--** Always on – load is always connected;
--** On charger disconnected – load is connected when there is no signal “Charger connected”;
--** On discharge request – load is connected when there is signal “Discharge request”;
--* Current corresponding to discharging – a current level to generate the "Discharging current present" signal, А;
--* Current indicating no discharging – a current level to clear the "Discharging current present" signal, А;
--* Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond;
--* Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond;
--* Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
--* Custom delay: <error> – specific error delay, millisecond;
--* Switch off the discharging contactor on errors without delay – a flag to protectively open the discharging contactor without a delay. In the opposite case, when an error is detected, the discharging contactor opens always with the delay “Delay before stopping discharging”.
--* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
--* Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
--* Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
--* Voltage to clear the “Ready to discharge” – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
--* Voltage to reset the “Ready to discharge” – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
++* **Enable **– a flag to activate the discharge control;
++* **Algorithm**:
++** **Always on** – load is always connected;
++** **On charger disconnected** – load is connected when there is no signal “Charger connected”;
++** **On discharge request** – load is connected when there is signal “Discharge request”;
++* **Allow charging only when the "Ready to discharge" signal is set** – discharging contactor will open if "Ready to discharge" signal is cleared;
++* **Delay before starting discharging** – a time delay T,,on,, before closing the discharging contactor, millisecond;
++* **Delay before stopping discharging** – a time delay T,,off,, before opening the discharging contactor, millisecond;
++* **Control the precharging contactor** – a flag that allows control of the precharging contactor while closing the discharge contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]);
++* **Errors 1, 2 to open the discharging contactor** – bitfields to choose the errors which will open the discharging contactor;
++* **Use custom delays before stopping discharging (on errors)** – a flag to enable manual settings of time delays T,,off,, for specific errors;
++* **Custom delay: <error>** – specific error delay, millisecond;
++* **Switch off the discharging contactor on errors without delay** – a flag to protectively open the discharging contactor without a delay. In the opposite case, when an error is detected, the discharging contactor opens always with the delay “Delay before stopping discharging”.
  === Charge/Discharge ===
--The BMS Main 3 device can control the charging/discharging contactor, which combines algorithms of charging and discharging contactor. It behaves as a charging contactor when “Charge request” or “Charger connected” is set, otherwise – as a discharging contactor.
++The BMS Main 3 / BMS Main 2R device can control the Charge/Discharge contactor, which combines algorithms of charging and discharging contactor.
--The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
++Charge/Discharge contactor has three algorithms of operation:
--[[image:1733322827919-875.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="85" width="800"]]
++On **Dependent (on Charging and Discharging signals)** algorithm the charge/discharge contactor depends on Charge and Discharge algorithms and their signals and behaves
--In this section:
++* as Charging contactor if "Charging" signal is set;
++* as Discharging contactor in other cases.
--* Enable – a flag to enable the charge/discharge controller.
++When **Independent (Always) **algorithm is selected, the charging/discharging contactor is always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
--=== Discharge (AUX) ===
++* Service reset
++* Power down request
++* Inhibit charging
++* Inhibit discharging
--The BMS Main 3 device can control the power supply of external equipment using the auxiliary (AUX) discharging contactor. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
++the charging/discharging contactor opens.
--The power supply circuit of the external equipment using the auxiliary (AUX) discharging contactor is independent of the battery load circuit. The closing and opening of the auxiliary (AUX) discharging contactor is performed according to its program.
--If the power supply function of the external equipment is enabled, the auxiliary (AUX) discharging contactor closes. The opening of this contactor occurs on three independent conditions:
++**Independent (on Charge request or Discharge request)** - charge/discharge contactor is based on its own controller and performs as follows:
--* the battery has low SOC;
--* the battery voltage is out of range;
--* the battery system errors are detected.
++* if there is "Charge request" or "Discharge request" signal and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging/discharging contactor closes;
++* If the "Charge request" or "Discharge request" disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the charging/discharging contactor opens.
--To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Charge/Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
--[[image:1733322827920-878.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
++The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
++[[image:1735122153011-166.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="800"]]
++
  In this section:
--* Enable – a flag to activate the auxiliary discharge control;
--* Switch off the discharging (AUX) contactor if the SOC is too low;
--* Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging contactor opens, %;
--* Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging contactor re-closes, %;
--* Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
--* Minimum voltage – minimum battery voltage, V;
--* Maximum voltage – maximum battery voltage, V;
--* Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error.
++* **Enable **– a flag to enable the charge/discharge controller.
++* **Algorithm**:
++** **Dependent (on Charging and Discharging signals)** - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
++** **Independent (Always)** - Charge/Discharge contactor is always closed if there is no errors;
++** **Independent (on Charge request or Discharge request)**;
++* **Delay before starting charging or discharging**, millisecond;
++* **Delay before stopping charging or discharging**, millisecond;
++* **Control the precharging contactor** – a flag that enables control of precharging contactor while closing the charge/discharge contactor;
++* **Emulate the "Charging" and "Discharging" signals** – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor;
++* **Errors 1, 2 to prevent CHARGING through charging/discharging contactor, Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor** – bitfields to choose the errors which will open the charging/discharging contactor. This bitfields are combined by bitwise OR and intended to separate settings for charging and discharging processes;
++* **Errors 1, 2 which affect the contactor only if battery CHARGING is detected** – a bitfield to choose the errors which will trigger only if charging current is present. This bitfield is combined with "Errors 1, 2 to prevent CHARGING through charging/discharging contactor" by bitwise AND;
++* **Errors 1, 2 which affect the contactor only if battery DISCHARGING is detected** – a bitfield to choose the errors which will trigger only if discharging current is present. This bitfield is combined with "Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor" by bitwise AND;
++* **Switch off the charging/discharging contactor on errors without delay** – a flag to protectively open the charging/discharging contactor without a delay. In the opposite case, when an error is detected, the charging/discharging contactor opens always with the delay “Delay before stopping discharging”.
--=== Main contactor ===
++=== Discharge (AUX) ===
--The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors.
++The BMS Main 3 / BMS Main 2R device can control the power supply of external equipment using the auxiliary (AUX) discharging contactor. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
--The Main contactor algorithm supports the following modes:
++The power supply circuit of the external equipment using the auxiliary (AUX) discharging contactor is independent of the battery load circuit. The closing and opening of the auxiliary (AUX) discharging contactor is performed according to its program.
--* Always on;
--* Automatic;
--* On demand.
++If the power supply function of the external equipment is enabled, the auxiliary (AUX) discharging contactor closes. The opening of this contactor occurs on three independent conditions:
--In “Always on” mode main contactor closes if all the following is true:
++* the battery has low SOC;
++* the battery voltage is out of range;
++* the errors are detected (configured in the "Errors 1, 2 ..." bitfields).
--* Charging contactor is open;
--* Discharging contactor is open;
--* There are no errors from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (CH);
--** High temperature (DCH);
--** Unallowable charging;
--** Critical error.
++To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
--In “Always on” mode main contactor opens if all the following is true:
++[[image:1735066190419-838.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
--* Charging contactor is open;
--* Discharging contactor is open;
--* There is an error from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (CH);
--** High temperature (DCH);
--** Unallowable charging;
--** Critical error.
--
--In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors.
--
--In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
--
--To change the parameters of the main contactor, select the "Control → Main contactor" section:
--
--[[image:1733322872744-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
--
  In this section:
--* Enable – a flag to enable the main contactor control;
--* Algorithm – main contactor control algorithm:
--** Always on – contactor is always closed;
--** Automatic – contactor closes by internal charge and discharge algorithms;
--** On demand – contactor is closed by an external request;
--* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed;
--* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s;
--* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset.
++* **Enable **– a flag to activate the auxiliary discharge control;
++* **Switch off the discharging (AUX) contactor if the SOC is too low**;
++* **Minimum SOC** – a minimum SOC value, when reached, the auxiliary (AUX) discharging contactor opens, %;
++* **Tolerant SOC** – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging contactor re-closes, %;
++* **Switch off the discharging (AUX) contactor if the cell voltage is out of the range**;
++* **Minimum cell voltage**, V;
++* **Maximum cell voltage**, V;
++* **Switch off the discharging (AUX) contactor if the battery voltage is out of the range**;
++* **Minimum battery voltage**, V;
++* **Maximum battery voltage**, V;
++* **Errors 1, 2 to open the auxiliary discharging contactor** – bitfields to choose the errors which will open the auxiliary discharging contactor.
  === Cell balancing ===
  Balancing makes the voltage of all cells equal to the minimum cell voltage.
--The following balancing rules are supported:
++The following **balancing rules** are supported:
  * when the battery is charging (current I > 0) and time after until the battery is relaxed;
  * when the battery is charging (current I > 0) or when the battery is in a state of relaxation;
@@ -549,39 +549,47 @@
  A balancing resistor is connected to the cell if the following conditions are simultaneously met:
  * the voltage on the cell is higher than the balancing start voltage;
--* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold.
++* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold;
  A balancing resistor is disconnected from the cell if any of the following conditions are met:
--* the voltage on the cell is less than the balancing start voltage;
++* the voltage on the cell is less than the balancing stop voltage;
  * the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
++(% class="box infomessage" %)
++(((
  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
++)))
--The BMS Main 3 can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
++The BMS Main 3 / BMS Main 2R can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
++BMS Main 3 / BMS Main 2R can force a cell balancing, if its voltage is higher than estimated value.
++
  To change the cell balancing parameters, select the "Control → Cell balancing" section:
--[[image:1733322883460-118.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
++[[image:1735065702806-422.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
  In this section:
--* Enable – a flag to enable cell balancing;
--* Balancing rule:
--** Balance on charge – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states);
--** Balance on charge or relaxed - balancing is performed while and after the charging and in the relaxed state (in “Charge ON”, “Charge OFF”, “Relaxed (after charging)” and “Relaxed (after discharging)” states);
--** Balance always – balancing is always performed regardless the battery state;
++* **Enable **– a flag to enable cell balancing;
++* **Balancing rule**:
++** **Balance on charge** – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states);
++** **Balance on charge or relaxed** - balancing is performed while and after the charging and in the relaxed state (in “Charge ON”, “Charge OFF”, “Relaxed (after charging)” and “Relaxed (after discharging)” states);
++** **Balance always** – balancing is always performed regardless the battery state;
++* **Balancing condition**:
++** **Automatic **– balancing will be performed automatically if needed conditions are met;
++** **On balancing request** – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value;
++* **Minimum cell voltage to start balancing**, V;
++* **Voltage deviation to start balancing**;
++* **Voltage deviation to stop balancing**;
++* **Voltage to start forced balancing** – if cell voltage is above this value, it will start discharging through balancing resistor;
++* **Voltage to stop forced balancing** – if cell voltage is below this value, it will stop discharging through balancing resistor;
++* **Maximum allowable temperature of BMS Logic devices**, ºC;
++* **Command to discharge all cells** – a flag to force the balancing of all cells.
--[[image:1733322883462-975.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="74" width="600"]]
--
--* Minimum cell voltage to start balancing, V;
--* Voltage deviation to start balancing;
--* Voltage deviation to stop balancing;
--* Command to discharge all cells – a flag to force the balancing of all cells.
--
  === Series balancing ===
--The BMS Main 3 device supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used. A series of cells must be equivalent: they must have the same number of cells and the same capacity.
++The BMS Main 3 / BMS Main 2R device supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used. A series of cells must be equivalent: they must have the same number of cells and the same capacity.
  Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 3 provides two signals to power switches: “Balancing series 1” and “Balancing series 2”, as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. The “Balancing series 1” and “Balancing series 2” signals are used to connect high-power balancing resistors in parallel with cell series 1 and 2.
@@ -598,17 +598,17 @@
  In this section:
--* Enable – a flag to enable series balancing;
--* Number of Logics in a series;
--* Minimum series voltage to start balancing, V;
--* Balancing threshold, V;
--* Coulomb threshold – the difference of the charges Qthr, given by a series of cells, above which balancing to be started, Ah;
--* Period – a period to reset of charge counters for each series (to avoid accumulation of error), second;
--* Do not sum series voltages – a flag to disable the summing of series voltages.3
++* **Enable **– a flag to enable series balancing;
++* **Number of Logics in a series**;
++* **Minimum series voltage to start balancing**, V;
++* **Balancing threshold**, V;
++* **Coulomb threshold** – the difference of the charges Qthr, given by a series of cells, above which balancing to be started, Ah;
++* **Period **– a period to reset of charge counters for each series (to avoid accumulation of error), second;
++* **Do not sum series voltages** – a flag to disable the summing of series voltages.
  === Power down ===
--The BMS Main 3 device can shut down itself if the battery voltage is low or the battery is idle for a long time.
++The BMS Main 3 / BMS Main 2R device can shut down itself if the battery voltage is low or the battery is idle for a long time.
  Shutting down the battery system is performed according to the following conditions:
@@ -623,11 +623,11 @@
  In this section:
--* Minimum voltage to power down – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
--* Idle time to power down – a time of battery inactivity after which the battery is shut down, minute;
--* Wait the "Power up/down request" is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
--* Power down if KEYRUN and CHARGE_ON are cleared – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared;
--* Delay before setting the internal power down signal – a delay before turning off the device power when removing KEYRUN and CHARGE_ON or receiving the “Power down request” command, ms.
++* **Minimum voltage to power down** – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
++* **Idle time to power down** – a time of battery inactivity after which the battery is shut down, minute;
++* **Wait the "Power up/down request" is cleared (on startup)** – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
++* **Power down if KEYRUN and CHARGE_ON are cleared** – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared;
++* **Delay before setting the internal power down signal** – a delay before turning off the device power when removing KEYRUN and CHARGE_ON or receiving the “Power down request” command, ms.
  === Heater ===
@@ -637,12 +637,12 @@
  In this section:
--* Enable – a flag to enable the heater control;
--* Minimum cell temperature, °C;
--* Tolerant cell temperature, °C;
--* Delay before starting the heater, millisecond;
--* Delay before stopping the heater, millisecond;
--* Switch off the heater on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
++* **Enable **– a flag to enable the heater control;
++* **Minimum cell temperature**, °C;
++* **Tolerant cell temperature**, °C;
++* **Delay before starting the heater**, millisecond;
++* **Delay before stopping the heater**, millisecond;
++* **Switch off the heater on errors** – switch off the Heater Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
  As a result of operating the heating algorithm, the “Heater” signal is generated.
@@ -654,7 +654,10 @@
  * the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before stopping the heater” time.
--If there is the "Heater" signal, the heater contactor closes and/or a signal is output to the corresponding digital output.
++(% class="box infomessage" %)
++(((
++If there is the "Heater" signal, the heater contactor closes and/or a signal is set to the corresponding digital output.
++)))
  === Cooler ===
@@ -681,7 +681,10 @@
  * the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before stopping the cooler” time.
--If there is the "Cooler" signal, the cooler contactor closes and/or a signal is output to the corresponding digital output.
++(% class="box infomessage" %)
++(((
++If there is the "Cooler" signal, the cooler contactor closes and/or a signal is set to the corresponding digital output.
++)))
  === High voltage ===
@@ -699,7 +699,10 @@
  The BMS Main 3 implements a self-diagnostics of high-voltage measurement lines. If measurement line breaks or high-voltage polarity is wrong, “High voltage fault” is generated.
--**If there is the “High voltage fault”, the “Critical error” is generated and all contactors open.**
++(% class="box warningmessage" %)
++(((
++If there is the “High voltage fault”, **the “Critical error” is generated.**
++)))
  === Cell analysis ===

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Changes for page 3.3 Control

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