Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19

From 16.47 to 17.1 From 21.1 to 22.1

From version 17.1

edited by Admin
on 2024/12/26 15:12

Change comment: Uploaded new attachment "1735225942893-869.png", version {1}

To version 21.1

edited by Admin
on 2025/02/11 14:23

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@@ -6,6 +6,12 @@
  The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
++(% class="box errormessage" %)
++(((
++**Attention!**
++Behavior of contactors at different errors is configured in **corresponding contactor settings**!
++)))
++
  === Overcurrent ===
  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
@@ -37,14 +37,9 @@
  * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
  * the current is negative (discharging) or zero, and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
--)))
--
  === Charge current limit ===
--The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]].  If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
++The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
  Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
@@ -53,18 +53,33 @@
  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
  * Enable – a flag to enable the protection;
--* Threshold to switch from Region 1 to Region 2
--*
++* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
++* Region 1: Current difference – a value of maximum absolute current diffr, A;
++* Region 2: Current difference – a value of maximum relative current excess, A;
++* Delay before setting the error, millisecond;
++* Delay before clearing the error, second;
++* Lock – a flag to block the error until the device is restarted.
--
  === Discharge current limit ===
--The BMS Main 3 device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]].  If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
++The BMS Main 3 device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
  Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
--To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
++To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
++[[image:1735225942893-869.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
++
++In this section:
++
++* Enable – a flag to enable the protection;
++* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
++* Region 1: Current difference – a value of maximum absolute current diffr, A;
++* Region 2: Current difference – a value of maximum relative current excess, A;
++* Delay before setting the error, millisecond;
++* Delay before clearing the error, second;
++* Lock – a flag to block the error until the device is restarted.
++
  === Undervoltage ===
  The BMS Main 3 device implements battery protection from too low voltage on the cells.
@@ -93,11 +93,6 @@
  * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Undervoltage" error, the **discharging **contactor opens.
--)))
--
  === Overvoltage ===
  The BMS Main 3 device implements battery protection from too high voltage on the cells.
@@ -126,11 +126,6 @@
  * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Overvoltage" error, the **charging** contactor and **discharging **contactor open (if the “Switch off the discharging contactor on error” flag is set).
--)))
--
  === Low temperature ===
  The BMS Main 3 device implements battery protection from too low temperature.
@@ -160,12 +160,6 @@
  * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Low temperature (CH)" error, the **charging **contactor opens.
--If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
--)))
--
  === High temperature ===
  The BMS Main 3 device implements battery protection from too high temperature.
@@ -195,12 +195,6 @@
  * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "High temperature (CH)" error, the **charging **contactor opens.
--If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
--)))
--
  === Battery cover ===
  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
@@ -226,7 +226,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
++If there is the "Battery cover error", the **“Critical error” **is generated**.**
  )))
  === High humidity ===
@@ -288,9 +288,9 @@
  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
++(% class="box warningmessage" %)
  (((
--If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
++If there is the “Water” error, the **“Critical error”** is generated.
  )))
  === Logic high temperature ===
@@ -346,7 +346,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
++If there is the "Logic offline" error, the **“Critical error” **is generated**.**
  )))
  === Cell count ===
@@ -375,7 +375,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
++If there is the "Cell count error", the **“Critical error” **is generated**.**
  )))
  === Logic count ===
@@ -403,7 +403,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
++If there is the "Logic count error", the **“Critical error”** is generated.
  )))
  === Short circuit ===
@@ -433,11 +433,6 @@
  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Short circuit" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error flag” is set).
--)))
--
  === High contactor temperature ===
  The BMS Main 3 device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
@@ -466,11 +466,6 @@
  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "High contactor temperature" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error” flag is set).
--)))
--
  === Current sensor ===
  The BMS Main 3 device checks the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
@@ -502,7 +502,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
++If there is the “Current sensor error”, the **“Critical error” **is generated.
  )))
  === Power switch ===
@@ -520,13 +520,9 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
++If there is the "Power switch error", the **“Critical error” **is generated.
  )))
--=== Power fault ===
--
--TBA
--
  === Charge contactor cycles ===
  The BMS Main 3 device protects the charging contactor against frequent switching.
@@ -554,11 +554,6 @@
  * the “Delay before clearing the error” time has passed since the error was generated.
--(% class="box infomessage" %)
--(((
--If there is the "CH contactor cycles error" error, the **charging **contactor opens.
--)))
--
  === Discharge contactor cycles ===
  The BMS Main 3 device protects the discharging contactor against frequent switching.
@@ -586,11 +586,6 @@
  * the “Delay before clearing the error” time has passed since the error was generated.
--(% class="box infomessage" %)
--(((
--If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
--)))
--
  === Temperature sensors ===
  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
@@ -610,7 +610,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
++If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
  )))
  === WDT reset ===
@@ -633,7 +633,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
++If there is the "WDT reset" error, the **“Critical error” **is generated.
  )))
  === Unallowable charging ===
@@ -661,11 +661,6 @@
  * the battery current is zero during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Unallowable charging" error, the **discharging **contactor opens.
--)))
--
  === Stuck contactor ===
  The BMS Main 3 device protects contactors against sticking.
@@ -689,7 +689,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
++If there is the “Stuck contactor” error, the **“Critical error” **is generated.
  )))
  === Contactor feedback ===
@@ -713,7 +713,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
++If there is the “Contactor feedback” error, the **“Critical error” **is generated.
  )))
  === Insulation ===
@@ -739,7 +739,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
++If there is the “Insulation fault”, the **“Critical error”** is generated.
  )))
  === HVIL ===
@@ -763,7 +763,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
++If there is the “HVIL error”, the **“Critical error”** is generated.
  )))
  === Critical error ===
@@ -801,16 +801,11 @@
  * “Main contactor feedback error”;
  * “High voltage fault”;
  * “Power switch error”;
--* “HVIL error”l
++* “HVIL error”;
  * “Power fault”.
  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the “Critical error”, **all **contactors open.
--)))
--
  === General error ===
  To change the general error parameters, select the "Protections → Critical error" section:
@@ -831,5 +831,5 @@
  (% class="box infomessage" %)
  (((
--The state of the “General error” can be output to a discrete output or a power switch.
++The state of the “General error” can be assigned to a discrete output or to a power switch.
  )))

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