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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 6.3
edited by Admin
on 2024/12/26 10:46
Change comment: There is no comment for this version
To version 4.4
edited by Admin
on 2024/12/12 16:32
Change comment: Update document after refactoring.

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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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650 650  If there is the "Unallowable charging" error, the **discharging **contactor opens.
651 651  )))
652 652  
653 -=== Stuck contactor ===
645 +=== ​​​​​​​Stuck contactor ===
654 654  
655 655  The BMS Main 3 device protects contactors against sticking.
656 656  
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700 700  If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
701 701  )))
702 702  
703 -=== Insulation ===
695 +=== ​​​​​​​Precharge ===
704 704  
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 +
705 705  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.
706 706  
707 707  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
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791 791  If there is the “Critical error”, **all **contactors open.
792 792  )))
793 793  
794 -=== General error ===
808 +=== ​​​​​​​General error ===
795 795  
796 796  To change the general error parameters, select the "Protections → Critical error" section:
797 797