Changes for page 3.3 Control

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

From 76.10 to 76.9 From 76.19 to 76.18

From version 76.18

edited by Admin
on 2026/03/31 14:16

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To version 76.10

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on 2026/03/31 13:02

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@@ -402,34 +402,32 @@
  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 3 device detects 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**.
++BMS Main 2R device detects 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.
++Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
--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.
++TBA
--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 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:
@@ -444,10 +444,14 @@
  === 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.
++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.
--BMS Main 3 / BMS Main 2R supports three charge control algorithms:
++The device supports three charge control algorithms:
++* 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”.
++
  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;
@@ -459,12 +459,16 @@
  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 "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.
++* 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 from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open.
  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 "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;
++* 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 from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open.
  (% class="box infomessage" %)
  (((
@@ -477,26 +477,30 @@
  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”;
--* **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”;
++* 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”;
  === Discharge ===
--The BMS Main 3 / BMS Main 2R device controls the discharging contactor to connect battery to the load.
++The device controls the discharging contactor to connect battery to the load.
--BMS Main 3 / BMS Main 2R supports three algorithms to control battery discharging:
++The device 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:
  * Service reset
@@ -526,46 +526,32 @@
  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”;
--* **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”.
++* 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 / BMS Main 2R device can control the Charge/Discharge contactor, which combines algorithms of charging and discharging contactor.
++The BMS Main 3 device can control the charge/discharge contactor, which combines algorithms of charging and discharging contactor.
  Charge/Discharge contactor has three algorithms of operation:
--On **Dependent (on Charging and Discharging signals)** algorithm the charge/discharge contactor depends on Charge and Discharge algorithms and their signals and behaves
++* 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) - Charge/Discharge contactor is based on its own controller that listen to Charge and Discharge requests and closes if one of these signals occurs.
--* as Charging contactor if "Charging" signal is set;
--* as Discharging contactor in other cases.
++TBA
--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:
--
--* Service reset
--* Power down request
--* Inhibit charging
--* Inhibit discharging
--
--the charging/discharging contactor opens.
--
--
--**Independent (on Charge request or Discharge request)** - charge/discharge contactor is based on its own controller and performs as follows:
--
--* 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.
--
  (% 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).
@@ -577,23 +577,23 @@
  In this section:
--* **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”.
++* 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”.
  === Discharge (AUX) ===
--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 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 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.
@@ -609,17 +609,17 @@
  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 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.
++* 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 ===
@@ -656,7 +656,7 @@
  In this section:
--* **Enable **– a flag to enable cell balancing;
++* 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);

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