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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 9.1
edited by Admin
on 2024/12/26 14:46
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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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56 56  
57 57  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
58 58  
59 -[[image:1735224224155-829.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
51 +[[image:1733328382380-760.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
60 60  
61 61  In this section:
62 62  
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63 63  * Enable – a flag to enable the protection;
64 64  * Minimum cell voltage, V;
65 65  * Tolerant cell voltage, V;
66 -* 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;
67 67  * Delay before setting the error, millisecond;
68 68  * Delay before clearing the error, second;
69 69  * Lock – a flag to block the error until the device is restarted.
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96 96  * Enable – a flag to enable the protection;
97 97  * Maximum cell voltage, V;
98 98  * Tolerant cell voltage, V;
99 -* 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;
100 100  * Delay before setting the error, millisecond;
101 101  * Delay before clearing the error, second;
102 102  * Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
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279 279  If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
280 280  )))
281 281  
282 -=== Logic high temperature ===
272 +=== High Logic temperature ===
283 283  
284 284  To change the overheating protection parameters of BMS Logic devices, select the "Protections → High Logic temperature" section:
285 285  
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513 513  If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
514 514  )))
515 515  
516 -=== Power fault ===
517 -
518 -TBA
519 -
520 520  === Charge contactor cycles ===
521 521  
522 522  The BMS Main 3 device protects the charging contactor against frequent switching.
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656 656  If there is the "Unallowable charging" error, the **discharging **contactor opens.
657 657  )))
658 658  
659 -=== Stuck contactor ===
645 +=== ​​​​​​​Stuck contactor ===
660 660  
661 661  The BMS Main 3 device protects contactors against sticking.
662 662  
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706 706  If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
707 707  )))
708 708  
709 -=== Insulation ===
695 +=== ​​​​​​​Precharge ===
710 710  
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 +
711 711  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.
712 712  
713 713  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
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797 797  If there is the “Critical error”, **all **contactors open.
798 798  )))
799 799  
800 -=== General error ===
808 +=== ​​​​​​​General error ===
801 801  
802 802  To change the general error parameters, select the "Protections → Critical error" section:
803 803  
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