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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 22.2
edited by Admin
on 2025/02/11 14:29
Change comment: There is no comment for this version
To version 17.3
edited by Admin
on 2024/12/26 15:13
Change comment: There is no comment for this version

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... ... @@ -6,12 +6,6 @@
6 6  
7 7  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.
8 8  
9 -(% class="box errormessage" %)
10 -(((
11 -**Attention!**
12 -Behavior of contactors at different errors is configured in **corresponding contactor settings**!
13 -)))
14 -
15 15  === Overcurrent ===
16 16  
17 17  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
... ... @@ -43,6 +43,11 @@
43 43  * 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;
44 44  * 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.
45 45  
40 +(% class="box infomessage" %)
41 +(((
42 +If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 +)))
44 +
46 46  === Charge current limit ===
47 47  
48 48  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.
... ... @@ -54,13 +54,10 @@
54 54  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
55 55  
56 56  * Enable – a flag to enable the protection;
57 -* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
58 -* Region 1: Current difference – a value of maximum absolute current diffr, A;
59 -* Region 2: Current difference – a value of maximum relative current excess, A;
60 -* Delay before setting the error, millisecond;
61 -* Delay before clearing the error, second;
62 -* Lock – a flag to block the error until the device is restarted.
56 +* Threshold to switch from Region 1 to Region 2 – a current value at which
57 +*
63 63  
59 +
64 64  === Discharge current limit ===
65 65  
66 66  The BMS Main 3 device can check if the discharging 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.
... ... @@ -74,12 +74,7 @@
74 74  In this section:
75 75  
76 76  * Enable – a flag to enable the protection;
77 -* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
78 -* Region 1: Current difference – a value of maximum absolute current diffr, A;
79 -* Region 2: Current difference – a value of maximum relative current excess, A;
80 -* Delay before setting the error, millisecond;
81 -* Delay before clearing the error, second;
82 -* Lock – a flag to block the error until the device is restarted.
73 +* Threshold to switch from Region 1 to Region 2
83 83  
84 84  === Undervoltage ===
85 85  
... ... @@ -109,6 +109,11 @@
109 109  
110 110  * 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.
111 111  
103 +(% class="box infomessage" %)
104 +(((
105 +If there is the "Undervoltage" error, the **discharging **contactor opens.
106 +)))
107 +
112 112  === Overvoltage ===
113 113  
114 114  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -137,6 +137,11 @@
137 137  
138 138  * 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.
139 139  
136 +(% class="box infomessage" %)
137 +(((
138 +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).
139 +)))
140 +
140 140  === Low temperature ===
141 141  
142 142  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -166,6 +166,12 @@
166 166  
167 167  * 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.
168 168  
170 +(% class="box infomessage" %)
171 +(((
172 +If there is the "Low temperature (CH)" error, the **charging **contactor opens.
173 +If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
174 +)))
175 +
169 169  === High temperature ===
170 170  
171 171  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -195,6 +195,12 @@
195 195  
196 196  * 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.
197 197  
205 +(% class="box infomessage" %)
206 +(((
207 +If there is the "High temperature (CH)" error, the **charging **contactor opens.
208 +If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
209 +)))
210 +
198 198  === Battery cover ===
199 199  
200 200  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -220,7 +220,7 @@
220 220  
221 221  (% class="box warningmessage" %)
222 222  (((
223 -If there is the "Battery cover error", the **“Critical error” **is generated**.**
236 +If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
224 224  )))
225 225  
226 226  === High humidity ===
... ... @@ -282,9 +282,9 @@
282 282  
283 283  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
284 284  
285 -(% class="box warningmessage" %)
298 +(% class="box infomessage" %)
286 286  (((
287 -If there is the “Water” error, the **“Critical error”** is generated.
300 +If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
288 288  )))
289 289  
290 290  === Logic high temperature ===
... ... @@ -340,7 +340,7 @@
340 340  
341 341  (% class="box warningmessage" %)
342 342  (((
343 -If there is the "Logic offline" error, the **“Critical error” **is generated**.**
356 +If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
344 344  )))
345 345  
346 346  === Cell count ===
... ... @@ -369,7 +369,7 @@
369 369  
370 370  (% class="box warningmessage" %)
371 371  (((
372 -If there is the "Cell count error", the **“Critical error” **is generated**.**
385 +If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
373 373  )))
374 374  
375 375  === Logic count ===
... ... @@ -397,7 +397,7 @@
397 397  
398 398  (% class="box warningmessage" %)
399 399  (((
400 -If there is the "Logic count error", the **“Critical error”** is generated.
413 +If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
401 401  )))
402 402  
403 403  === Short circuit ===
... ... @@ -427,6 +427,11 @@
427 427  
428 428  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
429 429  
443 +(% class="box infomessage" %)
444 +(((
445 +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).
446 +)))
447 +
430 430  === High contactor temperature ===
431 431  
432 432  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.
... ... @@ -455,6 +455,11 @@
455 455  
456 456  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
457 457  
476 +(% class="box infomessage" %)
477 +(((
478 +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).
479 +)))
480 +
458 458  === Current sensor ===
459 459  
460 460  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.
... ... @@ -486,7 +486,7 @@
486 486  
487 487  (% class="box warningmessage" %)
488 488  (((
489 -If there is the “Current sensor error”, the **“Critical error” **is generated.
512 +If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
490 490  )))
491 491  
492 492  === Power switch ===
... ... @@ -504,30 +504,13 @@
504 504  
505 505  (% class="box warningmessage" %)
506 506  (((
507 -If there is the "Power switch error", the **“Critical error” **is generated.
530 +If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
508 508  )))
509 509  
510 510  === Power fault ===
511 511  
512 -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:
535 +TBA
513 513  
514 -[[image:1739284154410-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
515 -
516 -In this section:
517 -
518 -* Delay before clearing the error, second;
519 -* Delay before setting the error, millisecond;
520 -* Time to keep power off,
521 -* Delay before clearing the error, second;
522 -* Lock – a flag to block the error until the device is restarted.
523 -
524 -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.
525 -
526 -(% class="box warningmessage" %)
527 -(((
528 -If there is the "Power switch error", the **“Critical error” **is generated.
529 -)))
530 -
531 531  === Charge contactor cycles ===
532 532  
533 533  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -555,6 +555,11 @@
555 555  
556 556  * the “Delay before clearing the error” time has passed since the error was generated.
557 557  
564 +(% class="box infomessage" %)
565 +(((
566 +If there is the "CH contactor cycles error" error, the **charging **contactor opens.
567 +)))
568 +
558 558  === Discharge contactor cycles ===
559 559  
560 560  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -582,6 +582,11 @@
582 582  
583 583  * the “Delay before clearing the error” time has passed since the error was generated.
584 584  
596 +(% class="box infomessage" %)
597 +(((
598 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
599 +)))
600 +
585 585  === Temperature sensors ===
586 586  
587 587  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -601,7 +601,7 @@
601 601  
602 602  (% class="box warningmessage" %)
603 603  (((
604 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
620 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
605 605  )))
606 606  
607 607  === WDT reset ===
... ... @@ -624,7 +624,7 @@
624 624  
625 625  (% class="box warningmessage" %)
626 626  (((
627 -If there is the "WDT reset" error, the **“Critical error” **is generated.
643 +If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
628 628  )))
629 629  
630 630  === Unallowable charging ===
... ... @@ -652,6 +652,11 @@
652 652  
653 653  * the battery current is zero during the “Delay before clearing the error” time.
654 654  
671 +(% class="box infomessage" %)
672 +(((
673 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
674 +)))
675 +
655 655  === Stuck contactor ===
656 656  
657 657  The BMS Main 3 device protects contactors against sticking.
... ... @@ -675,7 +675,7 @@
675 675  
676 676  (% class="box warningmessage" %)
677 677  (((
678 -If there is the “Stuck contactor” error, the **“Critical error” **is generated.
699 +If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
679 679  )))
680 680  
681 681  === Contactor feedback ===
... ... @@ -699,7 +699,7 @@
699 699  
700 700  (% class="box warningmessage" %)
701 701  (((
702 -If there is the “Contactor feedback” error, the **“Critical error” **is generated.
723 +If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
703 703  )))
704 704  
705 705  === Insulation ===
... ... @@ -725,7 +725,7 @@
725 725  
726 726  (% class="box warningmessage" %)
727 727  (((
728 -If there is the “Insulation fault”, the **“Critical error”** is generated.
749 +If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
729 729  )))
730 730  
731 731  === HVIL ===
... ... @@ -749,7 +749,7 @@
749 749  
750 750  (% class="box warningmessage" %)
751 751  (((
752 -If there is the “HVIL error”, the **“Critical error”** is generated.
773 +If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
753 753  )))
754 754  
755 755  === Critical error ===
... ... @@ -787,11 +787,16 @@
787 787  * “Main contactor feedback error”;
788 788  * “High voltage fault”;
789 789  * “Power switch error”;
790 -* “HVIL error”;
811 +* “HVIL error”l
791 791  * “Power fault”.
792 792  
793 793  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
794 794  
816 +(% class="box infomessage" %)
817 +(((
818 +If there is the “Critical error”, **all **contactors open.
819 +)))
820 +
795 795  === General error ===
796 796  
797 797  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -812,5 +812,5 @@
812 812  
813 813  (% class="box infomessage" %)
814 814  (((
815 -The state of the “General error” can be assigned to a discrete output or to a power switch.
841 +The state of the “General error” can be output to a discrete output or a power switch.
816 816  )))
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