Changes for page 3.4 Protections

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

From 16.46 to 16.45

From version 16.45

edited by Admin
on 2024/12/26 15:10

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To version 1.1

edited by Admin
on 2024/12/04 16:06

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@@ -1,1 +1,1 @@
--Battery management systems.BMS Main 3.3\. Configuration.WebHome
++drafts.bms-main-3.3\. Settings.WebHome

Content

@@ -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;" %)
--= Configuration =
++= SettingsThe 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.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. =
  (% data-numbered-headings-start="4" style="--numbered-headings-start: 3;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
  == Protections ==
@@ -6,13 +6,15 @@
  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.
--=== Overcurrent ===
++1.
++11.
++111. Overcurrent
  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
  To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
--[[image:1735224601506-488.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
++[[image:1733328382376-958.png]]
  In this section:
@@ -37,41 +37,18 @@
  * 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.
--)))
++If there is the "Overcurrent" error, the charging contactor and discharging contactor 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.
++1.
++11.
++111. Undervoltage
--Current difference is configured by two regions separated 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:
--
--[[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
--*
--
--
--=== Discharge current limit ===
--
--The BMS Main 3 device can check if the charging 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 configured by two regions separated 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:
--
--=== Undervoltage ===
--
  The BMS Main 3 device implements battery protection from too low voltage on the cells.
  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
--[[image:1735224224155-829.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
++[[image:1733328382380-760.png]]
  In this section:
@@ -78,7 +78,6 @@
  * Enable – a flag to enable the protection;
  * Minimum cell voltage, V;
  * Tolerant cell voltage, V;
--* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
  * Delay before setting the error, millisecond;
  * Delay before clearing the error, second;
  * Lock – a flag to block the error until the device is restarted.
@@ -93,18 +93,18 @@
  * 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.
--)))
++If there is the "Undervoltage" error, the discharging contactor opens.
--=== Overvoltage ===
++1.
++11.
++111. Overvoltage
++
  The BMS Main 3 device implements battery protection from too high voltage on the cells.
  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
--[[image:1735224377252-473.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
++[[image:1733328382382-607.png]]
  In this section:
@@ -111,9 +111,9 @@
  * Enable – a flag to enable the protection;
  * Maximum cell voltage, V;
  * Tolerant cell voltage, V;
--* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
  * Delay before setting the error, millisecond;
  * Delay before clearing the error, second;
++* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
  * Lock – a flag to block the error until the device is restarted.
  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
@@ -126,18 +126,18 @@
  * 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).
--)))
++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 ===
++1.
++11.
++111. Low temperature
++
  The BMS Main 3 device implements battery protection from too low temperature.
  To change the battery protection parameters from low temperature, select the "Protections → Low temperature" section:
--[[image:1733328382382-670.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="137" width="800"]]
++[[image:1733328382382-670.png]]
  In this section:
@@ -160,19 +160,17 @@
  * 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.
--)))
++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 ===
++1.
++11.
++111. High temperature
  The BMS Main 3 device implements battery protection from too high temperature.
  To change the battery protection parameters from high temperature, select the "Protections → High temperature" section:
--[[image:1733328399408-279.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
++[[image:1733328399408-279.png]]
  In this section:
@@ -195,17 +195,16 @@
  * 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.
--)))
++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 ===
++1.
++11.
++111. Battery cover
++
  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
--[[image:1733328399410-529.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
++[[image:1733328399410-529.png]]
  In this section:
@@ -224,18 +224,18 @@
  * no signal from the battery cover during the “Delay before clearing the error” time.
--(% 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 and all contactors open.**
--=== High humidity ===
++1.
++11.
++111. High humidity
++
  The BMS Main 3 can detect that the battery is operating in high humidity conditions.
  To change the detection parameters, select the "Protections → High humidity" section:
--[[image:1733328399412-184.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="106" width="800"]]
++[[image:1733328399412-184.png]]
  In this section:
@@ -256,18 +256,18 @@
  * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
  If there is the "High humidity" error, no action is taken. The error is indicative.
--)))
--=== Water ===
++1.
++11.
++111. Water
++
  The BMS Main 3 can protect the battery from working in very high humidity conditions.
  To change the protection parameters, select the "Protections → Water" section:
--[[image:1733328399413-393.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]]
++[[image:1733328399413-393.png]]
  In this section:
@@ -288,16 +288,16 @@
  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--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 and all relays open.**
--=== Logic high temperature ===
++1.
++11.
++111. High Logic temperature
++
  To change the overheating protection parameters of BMS Logic devices, select the "Protections →  High Logic temperature" section:
--[[image:1733328399414-280.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
++[[image:1733328399414-280.png]]
  In this section:
@@ -318,16 +318,16 @@
  * a BMS Logic device temperature is less than the “Tolerant temperature” value.
--(% class="box infomessage" %)
--(((
--Cell balancing is disabled on Logic devices with high temperature.
--)))
++**Cell balancing is prohibited for overheated Logic devices.**
--=== Logic offline ===
++1.
++11.
++111. Logic offline
++
  To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
--[[image:1733328399416-818.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="86" width="800"]]
++[[image:1733328399416-818.png]]
  In this section:
@@ -344,492 +344,4 @@
  * all connected BMS Logic devices respond to the commands of the BMS Main device.
--(% class="box warningmessage" %)
--(((
--If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Cell count ===
--
--To change the protection parameters from the mismatch of the number of cells to the set value, select the "Protections → Cell count" section:
--
--[[image:1733328415731-223.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="97" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Number of cells – a number of cells connected to the BMS;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
--
--Error generation conditions:
--
--* the number of cells connected to the BMS is **not equal** to the “Number of cells” value during the “Delay before setting the error” time.
--
--Conditions for removing the error:
--
--* the number of cells connected to the BMS is **equal** to the “Number of cells” value during the “Delay before clearing the error” time.
--
--(% class="box warningmessage" %)
--(((
--If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Logic count ===
--
--To change the protection parameters from the mismatch of the number of BMS Logic devices to the set value, select the "Protections → Logic count” section:
--
--[[image:1733328415732-163.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Logic count – a number of BMS Logic devices connected to the BMS Main;
--* Scan fast – a flag to scan BMS Logic devices fast (devices with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
--* Lock – lock the error until the device is reset.
--
--As a result of the operation of the protection from the mismatch of the number of BMS Logic devices, the "Logic count error" is generated.
--
--Error generation conditions:
--
--* the number of BMS Logic devices connected to the BMS Main is **not equal** to the “Logic count” value.
--
--Conditions for removing the error:
--
--* the number of BMS Logic devices connected to the BMS Main is **equal** to the “Logic count” value.
--
--(% class="box warningmessage" %)
--(((
--If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
--)))
--
--=== Short circuit ===
--
--The BMS Main 3 device implements the protection of power circuits (contactors, power wires) against overheating caused by the flow of high current for a long time.
--
--To change the protection parameters from short circuit, select the "Protections → Short circuit" section:
--
--[[image:1735224667621-969.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
--
--In this section:
--
--* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
--** Enable – a flag to enable the protection;
--** Maximum current, A;
--** Delay before setting the error, second;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is a short circuit, the "Short circuit" error is generated.
--
--Error generation conditions:
--
--* at any of the three protection levels, the current modulo is greater than the “Maximum current” value during the “Delay before setting the error” time.
--
--Conditions for removing the error:
--
--* 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.
--
--To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
--
--[[image:1735224706573-347.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 protection;
--* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
--* Maximum contactor temperature, °C;
--* Tolerant contactor temperature, °C;
--* Delay before setting the error, second;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is a contactor overheat, the "High contactor temperature" error is generated.
--
--Error generation conditions:
--
--* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
--
--Conditions for removing the error:
--
--* 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.
--
--To change the test parameters of the current sensor connection circuits, select the "Protections → Current sensor" section:
--
--[[image:1733328461552-948.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Maximum voltage, V;
--* Minimum voltage, V;
--* Voltage hysteresis – a hysteresis value to clear the error, V;
--* Delay before setting the error, second;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
--
--Error generation conditions:
--
--* the voltage in the signal line or reference line of the current sensor is greater than the “Maximum voltage” value during the “Delay before setting the error” time;
--* the voltage in the signal line or reference line of the current sensor is less than the “Minimum voltage” value during the “Delay before setting the error” time.
--
--Conditions for removing the error:
--
--* the voltage in the signal line or reference line of the current sensor is in range from (Minimum voltage + Voltage hysteresis) to (Maximum voltage - Voltage hysteresis) during the “Delay before clearing the error” time.
--
--(% class="box warningmessage" %)
--(((
--If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Power switch ===
--
--BMS Main 3 device checks the status of power switches that are used to control the contactors. To change the parameters of the power switch protection, select the "Protections → Power switch" section:
--
--[[image:1733328461554-241.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="99" width="800"]]
--
--In this section:
--
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--The “Power switch error” occurs when the device detects a shortage in contactor coil control circuit or an overheating of the power switch. Error is removed when the temperature of power switch is normal during “Delay before clearing the error” time.
--
--(% class="box warningmessage" %)
--(((
--If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Power fault ===
--
--TBA
--
--=== Charge contactor cycles ===
--
--The BMS Main 3 device protects the charging contactor against frequent switching.
--
--To change the protection parameters against high frequency switching of the charging contactor, select the "Protections → Charge contactor cycles" section:
--
--[[image:1733328461555-351.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
--* Check time – a time in which the BMS counts switching cycles of the charging contactor, second;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is a high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
--
--Error generation conditions:
--
--* the number of switching cycles of the charging contactor for the “Check time” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
--
--Conditions for removing the error:
--
--* 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.
--
--To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
--
--[[image:1733328461560-301.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
--* Check time – a time in which the BMS counts switching cycles of the charging contactor, second;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
--
--Error generation conditions:
--
--* the number of switching cycles of the discharging contactor for the “Check time” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
--
--Conditions for removing the error:
--
--* 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.
--
--To change the protection parameters of the temperature sensors circuits, select the "Protections → Temperature sensors" section:
--
--[[image:1733328471918-980.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there are no temperature sensors connected to any BMS Logic device or any temperature sensor of the BMS Logic is shorted, the "No temp. sensors" error and "Temp. sensor is shorted" error are generated respectively. These errors generated and removed with the “Delay before setting the error” and “Delay before clearing the error” delays.
--
--(% 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.**
--)))
--
--=== WDT reset ===
--
--If the BMS firmware hangs, the watchdog timer resets the device. The BMS can detect that the device was reset and generates the “WDT reset” error.
--
--To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
--
--[[image:1733328471919-183.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--Conditions for removing the error:
--
--* the “Delay before clearing the error” time has passed from the device startup.
--
--(% class="box warningmessage" %)
--(((
--If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Unallowable charging ===
--
--The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging contactor to prevent unallowable battery operation.
--
--To change the parameters of the unallowable charging protection, select the "Protections → Unallowable charging" section:
--
--[[image:1733328471920-923.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="97" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, second;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
--
--Error generation conditions:
--
--* the charging contactor is open, and the battery current is not zero during the “Delay before setting the error” time.
--
--Conditions for removing the error:
--
--* 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.
--
--To change the protection parameters against sticking, select the "Protections → Stuck contactor" section:
--
--[[image:1733328471920-314.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Check voltage – a flag to enable checking of voltage before and after contactors to detect the fact of contactor sticking;
--* Abnormal voltage difference – the difference of voltages before and after contactors at which BMS indicates and error;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
--
--* The charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set or (if “Check voltage” flag is set) “Charging/Discharging” contactor is open and voltage difference before and after contactors is lower than “Abnormal voltage difference”.
--
--(% class="box warningmessage" %)
--(((
--If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Contactor feedback ===
--
--The BMS Main 3 device can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, the feedback signal must be connected to the corresponding contactor feedback pin on the X3 header.
--
--To change the contactor feedback check parameters, select the "Protections → Contactor feedback" section:
--
--[[image:1733328487096-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="109" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
--
--* a command to the charging, precharging, discharging, charging/discharging or main contactor does not match its feedback value.
--
--(% class="box warningmessage" %)
--(((
--If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
--)))
--
--=== Insulation ===
--
--The BMS Main 3 device can detect a physical signal or CAN bus message from an external insulation monitoring device (such as Bender IR155, iso165C, BMD IMD) to monitor the insulation quality.
--
--To change the insulation monitoring parameters, select the "Protections → Insulation" section:
--
--[[image:1733328487098-963.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="121" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Checking algorithm – isolation checking mode:
--** Always on – check is always performed;
--** On charging – check is performed only if “Charger connected” or “Charge request” is set;
--** Except charging - check is performed only if “Charger connected” and “Charge request” are cleared;
--* Delay before setting the error, second;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--The “Insulation fault” is set if the “Insulation status” signal is detected during the “Delay before setting the error” time. The “Insulation status” signal can be received through the discrete input or by the CAN bus from an insulation monitoring device. The “Insulation fault” is cleared if the “Insulation status” signal is cleared during the “Delay before clearing the error” time.
--
--(% class="box warningmessage" %)
--(((
--If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
--)))
--
--=== HVIL ===
--
--The BMS Main 3 allows to control the high voltage interlock loop by applying current to a testing loop and monitoring the difference between the measured current and the required value.
--
--To change the HVIL measurement parameters, select the "Protections → HVIL" section:
--
--[[image:1735224839441-185.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Source is OFF: Lower current limit, A;
--* Source is OFF: Upper current limit, A;
--* Source is ON: Lower current limit, A;
--* Source is ON: Upper current limit, A;
--* Lock – a flag to block the error until the device is restarted.
--
--If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated. Error clears if interlock loop is being restored.
--
--(% class="box warningmessage" %)
--(((
--If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
--)))
--
--=== Critical error ===
--
--To change the critical error parameters, select the "Protections → Critical error" section:
--
--[[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
--
--* “Battery cover error”;
--* “Water”;
--* “Logic offline”;
--* “Cell count error”;
--* “ADC error”;
--* “Current sensor error”;
--* “Shunt offline”;
--* “Shunt error”;
--* “WDT reset”
--* “No temp. sensors”;
--* “Temperature sensor shorted”;
--* “Stuck contactor”;
--* “CH contactor feedback error”;
--* “DCH contactor feedback error”;
--* “Insulation fault”;
--* “PCH contactor feedback error”;
--* “CH/DCH contactor feedback error”;
--* “Main contactor feedback error”;
--* “High voltage fault”;
--* “Power switch error”;
--* “HVIL error”l
--* “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:
--
--[[image:1735224942262-497.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted;
--* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
--
--The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
--
--The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
--
--(% class="box infomessage" %)
--(((
--The state of the “General error” can be output to a discrete output or a power switch.
--)))
++**If there is the "Logic offline" error, the “Critical error” is generated and all relays open.**

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Changes for page 3.4 Protections

Summary

Details

Applications

Navigation

Table of Contents