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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 6.4
edited by Admin
on 2024/12/26 12:12
Change comment: There is no comment for this version
To version 4.3
edited by Admin
on 2024/12/11 11:33
Change comment: Update document after refactoring.

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1 -Battery management systems.BMS Main 3.3\. Configuration.WebHome
1 +Battery management systems.BMS Main 3.3\. Settings.WebHome
Content
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1 1  (% 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;" %)
2 -= Configuration =
2 += Settings =
3 3  
4 4  (% 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;" %)
5 5  == Protections ==
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42 42  If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 43  )))
44 44  
45 -=== Charge current limit ===
46 -
47 -TBA
48 -
49 -=== Discharge current limit ===
50 -
51 -TBA
52 -
53 53  === Undervoltage ===
54 54  
55 55  The BMS Main 3 device implements battery protection from too low voltage on the cells.
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277 277  If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
278 278  )))
279 279  
280 -=== Logic high temperature ===
272 +=== High Logic temperature ===
281 281  
282 282  To change the overheating protection parameters of BMS Logic devices, select the "Protections → High Logic temperature" section:
283 283  
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511 511  If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
512 512  )))
513 513  
514 -=== Power fault ===
515 -
516 -TBA
517 -
518 518  === Charge contactor cycles ===
519 519  
520 520  The BMS Main 3 device protects the charging contactor against frequent switching.
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654 654  If there is the "Unallowable charging" error, the **discharging **contactor opens.
655 655  )))
656 656  
657 -=== Stuck contactor ===
645 +=== ​​​​​​​Stuck contactor ===
658 658  
659 659  The BMS Main 3 device protects contactors against sticking.
660 660  
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704 704  If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
705 705  )))
706 706  
707 -=== Insulation ===
695 +=== ​​​​​​​Precharge ===
708 708  
697 +BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. To change the pre-charge monitoring parameters, select the "Protections → Precharge" section:
698 +
699 +[[image:1733328487097-648.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="99" width="800"]]
700 +
701 +In this section:
702 +
703 +* Enable – a flag to enable the protection;
704 +* Delay before setting the error, millisecond;
705 +* Delay before clearing the error, second;
706 +* Lock – a flag to block the error until the device is restarted.
707 +
708 +As a result of the protection algorithms the “Precharge error” is generated. Error generation conditions:
709 +
710 +* precharging process cannot be finished (the precharge current does not decrease or voltages before and after contactors are not equal) during the “Delay before setting the error” time.
711 +
712 +(% class="box infomessage" %)
713 +(((
714 +If there is the “Precharge error”, **charging **and **discharging **contactors open.
715 +)))
716 +
717 +=== ​​​​​​​Insulation ===
718 +
709 709  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.
710 710  
711 711  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
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795 795  If there is the “Critical error”, **all **contactors open.
796 796  )))
797 797  
798 -=== General error ===
808 +=== ​​​​​​​General error ===
799 799  
800 800  To change the general error parameters, select the "Protections → Critical error" section:
801 801