Wiki source code of 3.6 Battery protection

Version 33.4 by Admin on 2024/11/21 18:59

version	line-number	content
1.1	1	The BMS Main 2.x board continuously monitors the state of the cells, BMS Logic boards, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
	2
	3	== 3.6.1 Overcurrent protection ==
	4
	5	To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
2.2	6
2.3	7	[[Overcurrent protection settings>>image:1732211959984-118.png\|\|data-xwiki-image-style-alignment="center" height="266" width="386"]]
	8
4.13	9	In this section:
2.3	10
	11	* Enable – a flag to enable the protection;
	12	* Maximum charging current, А;
	13	* Tolerant charging current, А;
	14	* Maximum discharging current, А;
	15	* Tolerant discharging current, А;
	16	* Delay before setting the error, second;
	17	* Delay before clearing the error, second;
	18	* Lock the error until the device is reset – a flag to block the error until the board is restarted.
	19
	20	As a result of operation of the current protection, the "Overcurrent" error is generated.
	21
	22	Error generation conditions:
	23
	24	* the current is positive (charging), and its modulo value is greater than the “Maximum charging current” value for the “Delay before setting the error” time;
	25	* the current is negative (discharging), and its modulo value is greater than the “Maximum discharging current” value for the “Delay before setting the error” time.
	26
	27	Conditions for removing the error:
	28
	29	* 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;
	30	* the current is negative (discharging), and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
	31
	32	(% class="box infomessage" %)
	33	(((
33.3	34	If there is the "Overcurrent" error, the charging and discharging relay open.
2.3	35	)))
3.2	36
	37	== 3.6.2 Undervoltage protection ==
	38
	39	The board implements battery protection from too low or too high voltage on the cells.
	40
	41	To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
	42
3.3	43	[[Undervoltage protection settings>>image:1732212212350-294.png\|\|data-xwiki-image-style-alignment="center" height="207" width="359"]]
	44
	45	In this section:
	46
	47	* Enable – a flag to enable the protection;
	48	* Minimum cell voltage, V;
	49	* Tolerant cell voltage, V;
	50	* Delay before setting the error, second;
	51	* Delay before clearing the error, second;
	52	* Lock the error until the device is reset.
	53
	54	As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
	55
	56	Error generation conditions:
	57
	58	* the minimum voltage among all cells of the battery is less than the “Minimum cell voltage” value for the “Delay before setting the error” time.
	59
	60	Conditions for removing the error:
	61
	62	* 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.
	63
	64	(% class="box infomessage" %)
	65	(((
33.4	66	If there is the "Undervoltage" error, the discharging relay opens.
3.3	67	)))
	68
4.2	69	3.6.3 Overvoltage protection
	70
	71	To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
	72
6.2	73	[[Overvoltage protection settings>>image:1732212357972-295.png\|\|data-xwiki-image-style-alignment="center" height="218" width="338"]]
4.2	74
4.3	75	In this section:
	76
	77	* Enable – a flag to enable the protection;
	78	* Maximum cell voltage, V;
	79	* Tolerant cell voltage, V;
	80	* Delay before setting the error, second;
	81	* Delay before clearing the error, second;
	82	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
	83	* Lock the error until the device is reset.
	84
	85	As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
	86
	87	Error generation conditions:
	88
	89	* the maximum voltage among all cells of the battery is greater than the “Maximum cell voltage” value for the “Delay before setting the error” time.
	90
	91	Conditions for removing the error:
	92
	93	* 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.
	94
	95	(% class="box infomessage" %)
	96	(((
33.4	97	If there is the "Overvoltage" error, the charging relay and discharging relay opens (if the “Switch off the discharging relay on error” flag is set).
4.3	98	)))
	99
4.10	100	== 3.6.4 Low temperature protection ==
4.3	101
4.11	102	The board implements battery protection from too low temperature.
4.4	103
4.11	104	To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
	105
6.2	106	[[Low temperature protection settings>>image:1732213953083-955.png\|\|data-xwiki-image-style-alignment="center" height="237" width="338"]]
4.11	107
	108	In this section:
	109
	110	* Enable – a flag to enable the protection;
	111	* Minimum charging temperature, °C;
	112	* Tolerant charging temperature, °C;
	113	* Minimum discharging temperature, °C;
	114	* Tolerant discharging temperature, °C;
	115	* Delay before setting the error, second;
	116	* Delay before clearing the error, second;
	117	* Lock the error until the device is reset.
	118
	119	As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
	120
	121	Error generation conditions:
	122
	123	* the minimum temperature among all cells of the battery is less than the “Minimum charging (discharging) temperature” value for the “Delay before setting the error” time.
	124
	125	Conditions for removing the error:
	126
	127	* 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.
	128
	129	(% class="box infomessage" %)
	130	(((
33.4	131	If there is the "Low CH temperature" error, the charging relay opens.
	132	If there is the "Low DCH temperature" error, the discharging relay opens.
4.11	133	)))
	134
4.10	135	== 3.6.5 High temperature protection ==
4.5	136
4.11	137	The board implements battery protection from too high temperature.
	138
	139	To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
	140
7.2	141	[[High temperature protection settings>>image:1732213990755-759.png\|\|data-xwiki-image-style-alignment="center" height="258" width="370"]]
4.12	142
4.11	143	In this section:
	144
	145	* Enable – a flag to enable the protection;
	146	* Maximum charging temperature, °C;
	147	* Tolerant charging temperature, °C;
	148	* Maximum discharging temperature, °C;
	149	* Tolerant discharging temperature, °C;
	150	* Delay before setting the error, second;
	151	* Delay before clearing the error, second;
	152	* Lock the error until the device is reset.
	153
	154	As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
	155
	156	Error generation conditions:
	157
	158	* the maximum temperature among all cells of the battery is greater than the “Maximum charging (discharging) temperature” value for the “Delay before setting the error” time.
	159
	160	Conditions for removing the error:
	161
	162	* 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.
	163
	164	(% class="box infomessage" %)
	165	(((
33.4	166	If there is the "High CH temperature" error, the charging relay opens.
	167	If there is the "High DCH temperature" error, the discharging relay opens.
4.11	168	)))
	169
4.10	170	== 3.6.6 Battery cover protection ==
4.5	171
4.12	172	To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
	173
7.2	174	[[Battery cover protection settings>>image:1732214030014-281.png\|\|data-xwiki-image-style-alignment="center" height="155" width="334"]]
	175
4.12	176	In this section:
	177
	178	* Enable – a flag to enable the protection;
	179	* Delay before setting the error, second;
	180	* Delay before clearing the error, second;
	181	* Lock the error until the device is reset.
	182
	183	As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
	184
	185	Error generation conditions:
	186
	187	* there is a signal from the battery cover during the “Delay before setting the error” time.
	188
	189	Conditions for removing the error:
	190
	191	* no signal from the battery cover during the “Delay before clearing the error” time.
	192
	193	(% class="box warningmessage" %)
	194	(((
33.4	195	If there is the "Battery cover error", the “Critical error” is generated and all relays open.
4.12	196	)))
	197
4.13	198	== 3.6.7 High humidity protection ==
4.10	199
4.13	200	The board can protect the battery from high humidity and water.
	201
	202	To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
	203
10.2	204	[[High humidity protection settings>>image:1732214076060-358.png\|\|data-xwiki-image-style-alignment="center" height="185" width="321"]]
4.14	205
4.13	206	In this section:
	207
	208	* Enable – a flag to enable the protection;
10.2	209	* Maximum humidity, RH%;
	210	* Tolerant humidity, RH%;
4.13	211	* Delay before setting the error, second;
	212	* Delay before clearing the error, second;
	213	* Lock the error until the device is reset.
	214
	215	As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
	216
	217	Error generation conditions:
	218
	219	* the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
	220
	221	Conditions for removing the error:
	222
	223	* the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
	224
4.14	225	(% class="box infomessage" %)
	226	(((
4.13	227	If there is the "High humidity" error, no action is taken. The error is indicative.
4.14	228	)))
4.13	229
4.10	230	== 3.6.8 Water protection ==
	231
4.14	232	To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
	233
10.2	234	[[Water protection settings>>image:1732214111990-184.png\|\|data-xwiki-image-style-alignment="center" height="199" width="340"]]
4.14	235
	236	In this section:
	237
	238	* Enable – a flag to enable the protection;
	239	* Maximum (water) humidty, RH%;
	240	* Tolerant humidity, RH%;
	241	* Delay before setting the error, second;
	242	* Delay before clearing the error, second;
	243	* Lock the error until the device is reset.
	244
	245	As a result of the operation of the battery protection from water, the "Water" error is generated.
	246
	247	Error generation conditions:
	248
	249	* the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
	250
	251	Conditions for removing the error:
	252
	253	* the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
	254
	255	(% class="box warningmessage" %)
	256	(((
33.4	257	If there is the “Water” error, the “Critical error” is generated and all relays open.
4.14	258	)))
	259
4.10	260	== 3.6.9 Current sensor error ==
	261
4.14	262	The board is implemented to check the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
	263
	264	To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
	265
12.2	266	[[Current sensor error settings>>image:1732214146724-132.png\|\|data-xwiki-image-style-alignment="center" height="438" width="365"]]
4.14	267
	268	In this section:
	269
	270	* Enable – a flag to enable the protection;
	271	* Maximum voltage, V;
	272	* Minimum voltage, V;
	273	* Hysteresis voltage – a hysteresis value to clear the error, V;
	274	* Delay before setting the error, second;
	275	* Delay before clearing the error, second;
	276	* Lock the error until the device is reset.
	277
	278	If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
	279
	280	Error generation conditions:
	281
	282	* the voltage in the signal line or zero level line of the current sensor is greater than the “Maximum voltage” value during the “Delay before setting the error” time;
	283	* the voltage in the signal line or zero level line of the current sensor is less than the “Minimum voltage” value during the “Delay before setting the error” time.
	284
	285	Conditions for removing the error:
	286
	287	* the voltage in the signal line or zero level line of the current sensor is in range from (Minimum voltage + Hysteresis voltage) to (Maximum voltage - Hysteresis voltage) during the “Delay before clearing the error” time.
	288
4.15	289	(% class="box warningmessage" %)
	290	(((
33.4	291	If there is the “Current sensor error”, the “Critical error” is generated and all relays open.
4.15	292	)))
4.14	293
4.10	294	== 3.6.10 Short circuit protection ==
	295
4.15	296	The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
	297
	298	To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
	299
13.2	300	[[Short circuit protection settings>>image:1732214207026-822.png\|\|data-xwiki-image-style-alignment="center" height="528" width="371"]]
4.15	301
	302	In this section:
	303
	304	* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
	305	** Enable – a flag to enable the protection;
	306	** Maximum current, A;
	307	** Delay before setting the error, second;
	308	* Delay before clearing the error, second;
	309	* Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
	310	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
	311	* Lock the error until the device is reset.
	312
	313	If there is a short circuit, the "Short circuit" error is generated.
	314
	315	Error generation conditions:
	316
	317	* at any of the three protection levels, the current modulo is greater than the “Maximum current” value during the “Delay before setting the error” time.
	318
	319	Conditions for removing the error:
	320
	321	* the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
	322
	323	(% class="box infomessage" %)
	324	(((
33.4	325	If there is the "Short circuit" error, the charging relay opens (the “Switch off the charging relay on error” flag is set) and the discharging relay opens (the “Switch off the discharging relay on error flag” is set).
4.15	326	)))
	327
4.10	328	== 3.6.11 Contactor high temperature protection ==
	329
4.15	330	The BMS protects power contactors from overheating. To measure the temperature of the contactor, a thermistor is used, connected to the P13 connector of the board. Configuring of the analog input for temperature measurement is described in section Input signals.
	331
	332	To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
	333
14.2	334	[[Contactor high temperature protection settings>>image:1732214237851-405.png\|\|data-xwiki-image-style-alignment="center" height="234" width="336"]]
4.15	335
	336	In this section:
	337
	338	* Enable – a flag to enable the protection;
	339	* Maximum temperature, °C;
	340	* Tolerant temperature, °C;
	341	* Delay before setting the error, second;
	342	* Delay before clearing the error, second;
	343	* Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
	344	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
	345	* Lock the error until the device is reset.
	346
	347	If there is a contactor overheat, the "Contactor high temperature" error is generated.
	348
	349	Error generation conditions:
	350
	351	* the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
	352
	353	Conditions for removing the error:
	354
	355	* the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
	356
	357	(% class="box infomessage" %)
	358	(((
	359	If there is the "Contactor high temperature" error, the charging relay opens (the “Switch off the charging relay on error” flag is set) and the discharging relay opens (the “Switch off the discharging relay on error flag” is set).
	360	)))
	361
4.10	362	== 3.6.12 Unallowable charging protection ==
	363
4.16	364	The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
	365
	366	To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
	367
14.2	368	[[Unallowable charging protection settings>>image:1732214272022-547.png\|\|data-xwiki-image-style-alignment="center" height="145" width="312"]]
4.16	369
	370	In this section:
	371
	372	* Enable – a flag to enable the protection;
	373	* Delay before setting the error, second;
	374	* Delay before clearing the error, second;
	375	* Lock the error until the device is reset.
	376
	377	If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
	378
	379	Error generation conditions:
	380
	381	* the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
	382
	383	Conditions for removing the error:
	384
	385	* the battery current is zero during the “Delay before clearing the error” time.
	386
	387	(% class="box infomessage" %)
	388	(((
	389	If there is the "Unallowable charging" error, the discharging relay opens.
	390	)))
	391
4.10	392	== 3.6.13 Stuck contactor protection ==
	393
4.16	394	The BMS Main 2.x protects contactors against sticking.
	395
	396	To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
	397
17.2	398	[[Stuck contactor protection settings>>image:1732214367207-318.png\|\|data-xwiki-image-style-alignment="center" height="152" width="331"]]
4.16	399
	400	In this section:
	401
	402	* Enable – a flag to enable the protection;
	403	* Delay before setting the error, second;
	404	* Delay before clearing the error, second;
	405	* Lock the error until the device is reset;
	406
	407	If there is a stuck contactor, the “Stuck contactor” error is generated.
	408
	409	Error generation conditions:
	410
	411	* charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
	412
4.10	413	== 3.6.14 Contactor feedback check ==
	414
4.16	415	The BMS Main 2.x can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, one of the discrete input must be set as corresponding contactor feedback signal (see section Input and output signals).
	416
	417	To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
	418
17.2	419	[[Contactor feedback check settings>>image:1732214400721-274.png\|\|data-xwiki-image-style-alignment="center" height="150" width="323"]]
4.17	420
	421	In this section:
	422
	423	* Enable – a flag to enable the protection;
	424	* Delay before setting the error, second;
	425	* Delay before clearing the error, second;
	426	* Lock the error until the device is reset;
	427
	428	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	429
	430	* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
	431
4.10	432	== 3.6.15 Charging contactor cycles protection ==
	433
4.18	434	The BMS protects the charging contactor against frequent switching.
4.17	435
4.18	436	To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
	437
19.2	438	[[Charging contactor cycles protection settings>>image:1732214432750-543.png\|\|data-xwiki-image-style-alignment="center" height="260" width="336"]]
4.18	439
	440	In this section:
	441
	442	* Enable – a flag to enable the protection;
	443	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	444	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	445	* Delay before setting the error, second;
	446	* Delay before clearing the error, second;
	447	* Lock the error until the device is reset;
	448	* Cycles – a number of the charging contactor switchings made during battery operation.
	449
	450	If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	451
	452	Error generation conditions:
	453
	454	* the number of switchings of the charging contactor for the “Period” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
	455
	456	Conditions for removing the error:
	457
	458	* the “Delay before clearing the error” time has passed since the error was generated.
	459
	460	(% class="box infomessage" %)
	461	(((
	462	If there is the "CH contactor cycles error" error, the charging relay opens.
	463	)))
	464
4.10	465	== 3.6.16 Discharging contactor cycles protection ==
	466
4.18	467	The BMS protects the discharging contactor against frequent switching.
	468
	469	To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
	470
19.2	471	[[Discharging contactor cycles protection settings>>image:1732214468462-541.png\|\|data-xwiki-image-style-alignment="center" height="269" width="346"]]
4.18	472
	473	In this section:
	474
	475	* Enable – a flag to enable the protection;
	476	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	477	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	478	* Delay before setting the error, second;
	479	* Delay before clearing the error, second;
	480	* Lock the error until the device is reset;
	481	* Cycles – a number of the charging contactor switchings made during battery operation.
	482
	483	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	484
	485	Error generation conditions:
	486
	487	* the number of switchings of the discharging contactor for the “Period” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
	488
	489	Conditions for removing the error:
	490
	491	* the “Delay before clearing the error” time has passed since the error was generated.
	492
	493	(% class="box infomessage" %)
	494	(((
	495	If there is the "DCH contactor cycles error" error, the discharging relay opens.
	496	)))
	497
4.10	498	== 3.6.17 Temperature sensor error ==
	499
4.18	500	The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	501
	502	To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
	503
21.2	504	[[Temperature sensor error settings>>image:1732214501360-654.png\|\|data-xwiki-image-style-alignment="center" height="154" width="334"]]
4.18	505
	506	In this section:
	507
	508	* Enable – a flag to enable the protection;
	509	* Delay before setting the error, second;
	510	* Delay before clearing the error, second;
	511	* Lock the error until the device is reset.
	512
	513	If there are no temperature sensors connected to a BMS Logic board or any temperature sensor is shorted, the "No temp. sensors" error and "Temp. sensor is shorted" error are generated respectively. These errors generated and removed with the “Delay before setting the error” and “Delay before clearing the error” delays.
	514
4.19	515	(% class="box warningmessage" %)
	516	(((
33.3	517	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.
4.19	518	)))
4.18	519
4.10	520	== 3.6.18 Logic high temperature protection ==
	521
4.19	522	To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
	523
21.2	524	[[Logic high temperature protection settings>>image:1732214545352-111.png\|\|data-xwiki-image-style-alignment="center" height="156" width="309"]]
4.19	525
	526	In this section:
	527
	528	* Enable – a flag to enable the protection;
	529	* Maximum Logic temperature, °C;
	530	* Tolerant Logic temperature, °C;
	531	* Lock the error until the device is reset.
	532
	533	As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
	534
	535	Error generation conditions:
	536
	537	* a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
	538
	539	Conditions for removing the error:
	540
	541	* a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
	542
	543	(% class="box infomessage" %)
	544	(((
33.3	545	Cell balancing is prohibited for overheated boards.
4.19	546	)))
	547
4.10	548	== 3.6.19 Logic offline protection ==
	549
4.19	550	To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
	551
22.2	552	[[Logic offline protection settings>>image:1732214579147-515.png\|\|data-xwiki-image-style-alignment="center" height="107" width="204"]]
4.19	553
4.20	554	In this section:
4.19	555
4.20	556	* Enable – a flag to enable the protection;
	557	* Lock the error until the device is reset.
	558
	559	As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
	560
	561	Error generation conditions:
	562
	563	* at least one of the connected BMS Logic boards does not respond to the commands of the BMS Main 2.x board for 10 seconds.
	564
	565	Conditions for removing the error:
	566
	567	* all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
	568
	569	(% class="box warningmessage" %)
	570	(((
33.3	571	If there is the "Logic offline" error, the “Critical error” is generated and all relays open.
4.20	572	)))
	573
4.10	574	== 3.6.20 Cell count protection ==
	575
4.20	576	To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
	577
24.2	578	[[Cell count protection settings>>image:1732214641606-453.png\|\|data-xwiki-image-style-alignment="center" height="178" width="341"]]
4.20	579
	580	In this section:
	581
	582	* Enable – a flag to enable the protection;
	583	* Cell count – a number of cells connected to the BMS;
	584	* Delay before setting the error, second;
	585	* Delay before clearing the error, second;
	586	* Lock the error until the device is reset.
	587
	588	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	589
	590	Error generation conditions:
	591
	592	* the number of cells connected to the BMS is not equal to the “Cell count” value during the “Delay before setting the error” time.
	593
	594	Conditions for removing the error:
	595
	596	* the number of cells connected to the BMS is equal to the “Cell count” value during the “Delay before clearing the error” time.
	597
	598	(% class="box warningmessage" %)
	599	(((
33.3	600	If there is the "Cell count error", the “Critical error” is generated and all relays open.
4.20	601	)))
	602
4.10	603	== 3.6.21 Logic count protection ==
	604
4.20	605	To change the protection parameters from the mismatch of the number of BMS Logic boards to the set value, select the menu "Protections → Logic count protection":
	606
24.2	607	[[Logic count protection settings>>image:1732214675358-202.png\|\|data-xwiki-image-style-alignment="center" height="163" width="230"]]
4.20	608
	609	In this section:
	610
	611	* Enable – a flag to enable the protection;
	612	* Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
	613	* Fast scan – a flag to scan BMS Logic boards fast (boards with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
	614	* Lock the error until the device is reset.
	615
	616	As a result of the operation of the protection from the mismatch of the number of BMS Logic boards, the "Logic count error" is generated.
	617
	618	Error generation conditions:
	619
	620	* the number of BMS Logic boards connected to the BMS Main 2.x is not equal to the “Logic count” value.
	621
	622	Conditions for removing the error:
	623
	624	* the number of BMS Logic boards connected to the BMS Main is equal to the “Logic count” value.
	625
	626	(% class="box warningmessage" %)
	627	(((
33.3	628	If there is the "Logic count error", the “Critical error” is generated and all relays open.
4.20	629	)))
	630
4.10	631	== 3.6.22 WDT protection ==
	632
4.20	633	If the BMS firmware hangs, the watchdog timer resets the board. The BMS can detect that the board was reset and generates the “WDT reset” error.
	634
	635	To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
	636
24.3	637	[[WDT protection settings>>image:1732214703914-144.png\|\|data-xwiki-image-style-alignment="center" height="127" width="323"]]
4.20	638
4.21	639	In this section:
	640
	641	* Enable – a flag to enable the protection;
	642	* Delay before clearing the error, second;
	643	* Lock the error until the device is reset.
	644
	645	Conditions for removing the error:
	646
	647	* the “Delay before clearing the error” time has passed from the board startup.
	648
4.22	649	(% class="box warningmessage" %)
	650	(((
33.3	651	If there is the "WDT reset" error, the “Critical error” is generated and all relays open.
4.22	652	)))
4.21	653
4.10	654	== 3.6.23 Insulation monitoring ==
	655
4.22	656	BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
	657
	658	To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
	659
26.2	660	[[Insulation monitoring settings>>image:1732214731490-961.png\|\|data-xwiki-image-style-alignment="center" height="162" width="315"]]
4.22	661
	662	In this section:
	663
	664	* Enable – a flag to enable the protection;
	665	* Delay before setting the error, second;
	666	* Delay before clearing the error, second;
	667	* Lock the error until the device is reset.
	668
	669	Error is set if corresponding discrete input is set up and it received logical zero.
	670
4.10	671	== 3.6.24 Critical error parameters ==
	672
4.22	673	To change the critical error parameters, select the menu "Protections → Critical error parameters":
	674
26.2	675	[[Critical error parameters settings>>image:1732214761141-983.png\|\|data-xwiki-image-style-alignment="center" height="158" width="348"]]
4.22	676
	677	In this section:
	678
	679	* Enable – a flag to enable the protection;
	680	* Delay before setting the error, second;
	681	* Delay before clearing the error, second;
	682	* Lock the error until the device is reset.
	683
	684	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	685
	686	* “Battery cover error”;
	687	* “Water”;
	688	* “Logic offline”;
	689	* “Cell count error”;
	690	* “Logic count error”;
	691	* “ADC error”;
	692	* “No temp. sensors”;
	693	* “Temp. sensor is shorted”;
	694	* “Current sensor error”;
	695	* “Shunt offline”;
	696	* “Shunt error”;
	697	* “Settings error”;
	698	* “WDT reset”.
	699
	700	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	701
	702	(% class="box warningmessage" %)
	703	(((
	704	If there is the “Critical error”, all relays open.
	705	)))
	706
4.10	707	== 3.6.25 General error parameters ==
	708
27.2	709	To change the general error parameters, select the menu "Protections → General error parameters":
	710
	711	[[General error parameters settings>>image:1732214987517-111.png\|\|data-xwiki-image-style-alignment="center" height="535" width="349"]]
	712
	713	In this section:
	714
	715	* Enable – a flag to enable the protection;
	716	* Delay before setting the error, second;
	717	* Delay before clearing the error, second;
27.3	718	* Lock the error until the device is reset;
	719	* Errors – a section to select errors that should trigger General error.
27.2	720
28.2	721	The critical error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
27.3	722
28.2	723	The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
	724
	725	The "General error" is //indicative //and can be linked to any discrete output of the board.
	726
4.10	727	== 3.6.26 Low SOC signal ==
	728
4.22	729	To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
	730
30.2	731	[[Low SOC signal settings>>image:1732215174961-645.png\|\|data-xwiki-image-style-alignment="center" height="186" width="325"]]
4.22	732
	733	In this section:
	734
	735	* Enable – a flag to enable signal generation;
	736	* Minimum SOC, %;
	737	* Tolerant SOC, %;
	738	* Delay before setting the signal, second;
	739	* Delay before clearing the signal, second;
	740	* Lock the signal until the device is reset.
	741
	742	Signal generation conditions:
	743
	744	* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
	745
	746	Conditions for clearing the signal:
	747
	748	* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
	749
4.23	750	The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
4.22	751
4.10	752	== 3.6.27 High charging current signal ==
	753
4.23	754	To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
	755
30.2	756	[[High charging current signal settings>>image:1732215211714-445.png\|\|data-xwiki-image-style-alignment="center" height="181" width="322"]]
4.23	757
	758	In this section:
	759
	760	* Enable – a flag to enable signal generation;
	761	* Maximum charging current, А;
	762	* Tolerant charging current, А;
	763	* Delay before setting the signal, second;
	764	* Delay before clearing the signal, second;
	765	* Lock the signal until the device is reset.
	766
	767	Signal generation conditions:
	768
	769	* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
	770
	771	Conditions for clearing the signal:
	772
	773	* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
	774
	775	The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
	776
4.10	777	== 3.6.28 Heater control ==
	778
4.23	779	To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
	780
32.2	781	[[Heater control settings>>image:1732215252650-791.png\|\|data-xwiki-image-style-alignment="center" height="233" width="370"]]
4.23	782
	783	In this section:
	784
	785	* Enable – a flag to enable heater control;
	786	* Minimum cell temperature, °C;
	787	* Tolerant cell temperature, °C;
	788	* Delay before setting the signal, second;
	789	* Delay before clearing the signal, second;
	790	* Lock the signal until the device is reset;
	791	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	792
	793	As a result of operating the heating algorithm, the “Heater” signal is generated.
	794
	795	Conditions of signal generation:
	796
	797	* The minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before setting the signal” time.
	798
	799	Conditions for clearing the signal:
	800
	801	* the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
	802
4.24	803	(% class="box infomessage" %)
	804	(((
4.23	805	If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
4.24	806	)))
4.23	807
4.10	808	== 3.6.29 Heater (AUX) control ==
	809
4.25	810	To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
4.24	811
32.2	812	[[Heater (AUX) control settings>>image:1732215282135-420.png\|\|data-xwiki-image-style-alignment="center" height="228" width="361"]]
4.24	813
	814	In this section:
	815
	816	* Enable – a flag to enable heater control;
	817	* Minimum cell temperature, °C;
	818	* Tolerant cell temperature, °C;
	819	* Delay before setting the signal, second;
	820	* Delay before clearing the signal, second;
	821	* Lock the signal until the device is reset;
	822	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	823
	824	As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
	825
	826	Conditions of signal generation:
	827
	828	* The minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before setting the signal” time.
	829
	830	Conditions for clearing the signal:
	831
	832	* the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
	833
4.25	834	(% class="box infomessage" %)
	835	(((
	836	If there is the "Heater (AUX)" signal, the auxiliary heater relay closes and/or a signal is output to the corresponded digital output.
	837	)))
4.24	838
4.10	839	== 3.6.30 Cooler control ==
	840
4.25	841	To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
	842
33.2	843	[[Cooler control settings>>image:1732215313977-499.png\|\|data-xwiki-image-style-alignment="center" height="219" width="348"]]
4.25	844
	845	In this section:
	846
	847	* Enable – a flag to enable cooler control;
	848	* Maximum cell temperature, °C;
	849	* Tolerant cell temperature, °C;
	850	* Delay before setting the signal, second;
	851	* Delay before clearing the signal, second;
	852	* Lock the signal until the device is reset;
	853	* Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
	854
	855	As a result of operating the cooling algorithm, the "Cooler" signal is generated.
	856
	857	Conditions of signal generation:
	858
	859	* the maximum temperature among all cells of the battery is greater than the “Maximum cell temperature” value during the “Delay before setting the signal” time.
	860
	861	Conditions for clearing the signal:
	862
	863	* the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
	864
	865	(% class="box infomessage" %)
	866	(((
	867	If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
	868	)))
	869
4.10	870	== 3.6.31 Fault simulation ==
4.26	871
	872	The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
	873
	874	To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
	875
33.2	876	[[Fault simulation settings>>image:1732215359330-850.png\|\|data-xwiki-image-style-alignment="center" height="732" width="204"]]
4.26	877
	878	In this section:
	879
	880	* Overcurrent;
	881	* Undervoltage;
	882	* Overvoltage;
	883	* Low CH temperature;
	884	* Low DCH temperature;
	885	* High CH temperature;
	886	* High DCH temperature;
	887	* Battery cover error;
	888	* High humidity;
	889	* Water;
	890	* Current sensor error;
	891	* Short circuit;
	892	* Contactor high temperature;
	893	* Unallowable charging;
	894	* Stuck contactor;
	895	* CH contactor feedback error;
	896	* DCH contactor feedback error;
	897	* PCH contactor feedback error;
	898	* CH/DCH contactor feedback error;
	899	* Main contactor feedback error;
	900	* CH contactor cycles error;
	901	* DCH contactor cycles error;
	902	* Logic high temperature;
	903	* Logic offline;
	904	* Cell count error;
	905	* Logic count error;
	906	* Insulation error;
	907	* Critical error;
	908	* Low SOC;
	909	* High charging current;
	910	* Heater;
	911	* Cooler.
	912
	913	To simulate errors, set the necessary flags and click on the "Save" button.

Wiki source code of 3.6 Battery protection

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