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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 6.2
edited by Admin
on 2024/12/25 11:57
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 -
48 -=== Discharge current limit ===
49 -
50 -
51 51  === Undervoltage ===
52 52  
53 53  The BMS Main 3 device implements battery protection from too low voltage on the cells.
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648 648  If there is the "Unallowable charging" error, the **discharging **contactor opens.
649 649  )))
650 650  
651 -=== Stuck contactor ===
645 +=== ​​​​​​​Stuck contactor ===
652 652  
653 653  The BMS Main 3 device protects contactors against sticking.
654 654  
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698 698  If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
699 699  )))
700 700  
701 -=== Insulation ===
695 +=== ​​​​​​​Precharge ===
702 702  
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 +
703 703  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.
704 704  
705 705  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
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789 789  If there is the “Critical error”, **all **contactors open.
790 790  )))
791 791  
792 -=== General error ===
808 +=== ​​​​​​​General error ===
793 793  
794 794  To change the general error parameters, select the "Protections → Critical error" section:
795 795