Wiki source code of 3.6 Battery protection

Version 35.2 by Admin on 2024/11/22 15:12

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
35.1	37	== 3.6.2 Undervoltage protection ==
3.2	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
35.1	69	== 3.6.3 Overvoltage protection ==
4.2	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	(((
33.5	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).
4.15	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	(((
33.5	389	If there is the "Unallowable charging" error, the discharging relay opens.
4.16	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
33.7	413	(% class="box warningmessage" %)
	414	(((
	415	If there is the “Stuck contactor error”, the “Critical error” is generated and all relays open.
	416	)))
33.5	417
4.10	418	== 3.6.14 Contactor feedback check ==
	419
4.16	420	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).
	421
	422	To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
	423
17.2	424	[[Contactor feedback check settings>>image:1732214400721-274.png\|\|data-xwiki-image-style-alignment="center" height="150" width="323"]]
4.17	425
	426	In this section:
	427
	428	* Enable – a flag to enable the protection;
	429	* Delay before setting the error, second;
	430	* Delay before clearing the error, second;
	431	* Lock the error until the device is reset;
	432
	433	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	434
	435	* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
	436
33.8	437	(% class="box warningmessage" %)
	438	(((
	439	If there is the contactor feedback error, the “Critical error” is generated and all relays open.
	440	)))
33.5	441
4.10	442	== 3.6.15 Charging contactor cycles protection ==
	443
4.18	444	The BMS protects the charging contactor against frequent switching.
4.17	445
4.18	446	To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
	447
19.2	448	[[Charging contactor cycles protection settings>>image:1732214432750-543.png\|\|data-xwiki-image-style-alignment="center" height="260" width="336"]]
4.18	449
	450	In this section:
	451
	452	* Enable – a flag to enable the protection;
	453	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	454	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	455	* Delay before setting the error, second;
	456	* Delay before clearing the error, second;
	457	* Lock the error until the device is reset;
	458	* Cycles – a number of the charging contactor switchings made during battery operation.
	459
	460	If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	461
	462	Error generation conditions:
	463
	464	* 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.
	465
	466	Conditions for removing the error:
	467
	468	* the “Delay before clearing the error” time has passed since the error was generated.
	469
	470	(% class="box infomessage" %)
	471	(((
33.5	472	If there is the "CH contactor cycles error" error, the charging relay opens.
4.18	473	)))
	474
4.10	475	== 3.6.16 Discharging contactor cycles protection ==
	476
4.18	477	The BMS protects the discharging contactor against frequent switching.
	478
	479	To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
	480
19.2	481	[[Discharging contactor cycles protection settings>>image:1732214468462-541.png\|\|data-xwiki-image-style-alignment="center" height="269" width="346"]]
4.18	482
	483	In this section:
	484
	485	* Enable – a flag to enable the protection;
	486	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	487	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	488	* Delay before setting the error, second;
	489	* Delay before clearing the error, second;
	490	* Lock the error until the device is reset;
	491	* Cycles – a number of the charging contactor switchings made during battery operation.
	492
	493	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	494
	495	Error generation conditions:
	496
	497	* 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.
	498
	499	Conditions for removing the error:
	500
	501	* the “Delay before clearing the error” time has passed since the error was generated.
	502
	503	(% class="box infomessage" %)
	504	(((
33.5	505	If there is the "DCH contactor cycles error" error, the discharging relay opens.
4.18	506	)))
	507
4.10	508	== 3.6.17 Temperature sensor error ==
	509
4.18	510	The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	511
	512	To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
	513
21.2	514	[[Temperature sensor error settings>>image:1732214501360-654.png\|\|data-xwiki-image-style-alignment="center" height="154" width="334"]]
4.18	515
	516	In this section:
	517
	518	* Enable – a flag to enable the protection;
	519	* Delay before setting the error, second;
	520	* Delay before clearing the error, second;
	521	* Lock the error until the device is reset.
	522
	523	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.
	524
4.19	525	(% class="box warningmessage" %)
	526	(((
33.6	527	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.
4.19	528	)))
4.18	529
4.10	530	== 3.6.18 Logic high temperature protection ==
	531
4.19	532	To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
	533
21.2	534	[[Logic high temperature protection settings>>image:1732214545352-111.png\|\|data-xwiki-image-style-alignment="center" height="156" width="309"]]
4.19	535
	536	In this section:
	537
	538	* Enable – a flag to enable the protection;
	539	* Maximum Logic temperature, °C;
	540	* Tolerant Logic temperature, °C;
	541	* Lock the error until the device is reset.
	542
	543	As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
	544
	545	Error generation conditions:
	546
	547	* a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
	548
	549	Conditions for removing the error:
	550
	551	* a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
	552
	553	(% class="box infomessage" %)
	554	(((
33.3	555	Cell balancing is prohibited for overheated boards.
4.19	556	)))
	557
4.10	558	== 3.6.19 Logic offline protection ==
	559
4.19	560	To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
	561
22.2	562	[[Logic offline protection settings>>image:1732214579147-515.png\|\|data-xwiki-image-style-alignment="center" height="107" width="204"]]
4.19	563
4.20	564	In this section:
4.19	565
4.20	566	* Enable – a flag to enable the protection;
	567	* Lock the error until the device is reset.
	568
	569	As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
	570
	571	Error generation conditions:
	572
	573	* 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.
	574
	575	Conditions for removing the error:
	576
	577	* all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
	578
	579	(% class="box warningmessage" %)
	580	(((
33.6	581	If there is the "Logic offline" error, the “Critical error” is generated and all relays open.
4.20	582	)))
	583
4.10	584	== 3.6.20 Cell count protection ==
	585
4.20	586	To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
	587
24.2	588	[[Cell count protection settings>>image:1732214641606-453.png\|\|data-xwiki-image-style-alignment="center" height="178" width="341"]]
4.20	589
	590	In this section:
	591
	592	* Enable – a flag to enable the protection;
	593	* Cell count – a number of cells connected to the BMS;
	594	* Delay before setting the error, second;
	595	* Delay before clearing the error, second;
	596	* Lock the error until the device is reset.
	597
	598	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	599
	600	Error generation conditions:
	601
	602	* the number of cells connected to the BMS is not equal to the “Cell count” value during the “Delay before setting the error” time.
	603
	604	Conditions for removing the error:
	605
	606	* the number of cells connected to the BMS is equal to the “Cell count” value during the “Delay before clearing the error” time.
	607
	608	(% class="box warningmessage" %)
	609	(((
33.6	610	If there is the "Cell count error", the “Critical error” is generated and all relays open.
4.20	611	)))
	612
4.10	613	== 3.6.21 Logic count protection ==
	614
4.20	615	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":
	616
24.2	617	[[Logic count protection settings>>image:1732214675358-202.png\|\|data-xwiki-image-style-alignment="center" height="163" width="230"]]
4.20	618
	619	In this section:
	620
	621	* Enable – a flag to enable the protection;
	622	* Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
	623	* 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);
	624	* Lock the error until the device is reset.
	625
	626	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.
	627
	628	Error generation conditions:
	629
	630	* the number of BMS Logic boards connected to the BMS Main 2.x is not equal to the “Logic count” value.
	631
	632	Conditions for removing the error:
	633
	634	* the number of BMS Logic boards connected to the BMS Main is equal to the “Logic count” value.
	635
	636	(% class="box warningmessage" %)
	637	(((
33.6	638	If there is the "Logic count error", the “Critical error” is generated and all relays open.
4.20	639	)))
	640
4.10	641	== 3.6.22 WDT protection ==
	642
4.20	643	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.
	644
	645	To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
	646
24.3	647	[[WDT protection settings>>image:1732214703914-144.png\|\|data-xwiki-image-style-alignment="center" height="127" width="323"]]
4.20	648
4.21	649	In this section:
	650
	651	* Enable – a flag to enable the protection;
	652	* Delay before clearing the error, second;
	653	* Lock the error until the device is reset.
	654
	655	Conditions for removing the error:
	656
	657	* the “Delay before clearing the error” time has passed from the board startup.
	658
4.22	659	(% class="box warningmessage" %)
	660	(((
35.1	661	If there is the "WDT reset" error, the “Critical error” is generated and all relays open.
4.22	662	)))
4.21	663
4.10	664	== 3.6.23 Insulation monitoring ==
	665
4.22	666	BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
	667
	668	To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
	669
26.2	670	[[Insulation monitoring settings>>image:1732214731490-961.png\|\|data-xwiki-image-style-alignment="center" height="162" width="315"]]
4.22	671
	672	In this section:
	673
	674	* Enable – a flag to enable the protection;
	675	* Delay before setting the error, second;
	676	* Delay before clearing the error, second;
	677	* Lock the error until the device is reset.
	678
	679	Error is set if corresponding discrete input is set up and it received logical zero.
	680
33.9	681	(% class="box warningmessage" %)
	682	(((
35.1	683	If there is the "Insulation monitoring" error, the “Critical error” is generated and all relays open.
33.9	684	)))
	685
4.10	686	== 3.6.24 Critical error parameters ==
	687
4.22	688	To change the critical error parameters, select the menu "Protections → Critical error parameters":
	689
26.2	690	[[Critical error parameters settings>>image:1732214761141-983.png\|\|data-xwiki-image-style-alignment="center" height="158" width="348"]]
4.22	691
	692	In this section:
	693
	694	* Enable – a flag to enable the protection;
	695	* Delay before setting the error, second;
	696	* Delay before clearing the error, second;
	697	* Lock the error until the device is reset.
	698
	699	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	700
	701	* “Battery cover error”;
	702	* “Water”;
	703	* “Logic offline”;
	704	* “Cell count error”;
	705	* “Logic count error”;
	706	* “ADC error”;
	707	* “No temp. sensors”;
	708	* “Temp. sensor is shorted”;
	709	* “Current sensor error”;
34.1	710	* "Stuck contactor";
	711	* "Contactor feedback";
4.22	712	* “Shunt offline”;
	713	* “Shunt error”;
	714	* “Settings error”;
33.9	715	* “WDT reset”
	716	* "Insulation monitoring".
4.22	717
	718	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	719
	720	(% class="box warningmessage" %)
	721	(((
	722	If there is the “Critical error”, all relays open.
	723	)))
	724
4.10	725	== 3.6.25 General error parameters ==
	726
27.2	727	To change the general error parameters, select the menu "Protections → General error parameters":
	728
	729	[[General error parameters settings>>image:1732214987517-111.png\|\|data-xwiki-image-style-alignment="center" height="535" width="349"]]
	730
	731	In this section:
	732
	733	* Enable – a flag to enable the protection;
	734	* Delay before setting the error, second;
	735	* Delay before clearing the error, second;
27.3	736	* Lock the error until the device is reset;
	737	* Errors – a section to select errors that should trigger General error.
27.2	738
28.2	739	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	740
28.2	741	The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
	742
33.6	743	(% class="box infomessage" %)
	744	(((
28.2	745	The "General error" is //indicative //and can be linked to any discrete output of the board.
33.6	746	)))
28.2	747
4.10	748	== 3.6.26 Low SOC signal ==
	749
4.22	750	To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
	751
30.2	752	[[Low SOC signal settings>>image:1732215174961-645.png\|\|data-xwiki-image-style-alignment="center" height="186" width="325"]]
4.22	753
	754	In this section:
	755
	756	* Enable – a flag to enable signal generation;
	757	* Minimum SOC, %;
	758	* Tolerant SOC, %;
	759	* Delay before setting the signal, second;
	760	* Delay before clearing the signal, second;
	761	* Lock the signal until the device is reset.
	762
	763	Signal generation conditions:
	764
	765	* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
	766
	767	Conditions for clearing the signal:
	768
	769	* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
	770
33.6	771	(% class="box infomessage" %)
	772	(((
4.23	773	The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
33.6	774	)))
4.22	775
4.10	776	== 3.6.27 High charging current signal ==
	777
4.23	778	To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
	779
30.2	780	[[High charging current signal settings>>image:1732215211714-445.png\|\|data-xwiki-image-style-alignment="center" height="181" width="322"]]
4.23	781
	782	In this section:
	783
	784	* Enable – a flag to enable signal generation;
	785	* Maximum charging current, А;
	786	* Tolerant charging current, А;
	787	* Delay before setting the signal, second;
	788	* Delay before clearing the signal, second;
	789	* Lock the signal until the device is reset.
	790
	791	Signal generation conditions:
	792
	793	* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
	794
	795	Conditions for clearing the signal:
	796
	797	* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
	798
33.6	799	(% class="box infomessage" %)
	800	(((
4.23	801	The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
33.6	802	)))
4.23	803
4.10	804	== 3.6.28 Heater control ==
	805
4.23	806	To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
	807
32.2	808	[[Heater control settings>>image:1732215252650-791.png\|\|data-xwiki-image-style-alignment="center" height="233" width="370"]]
4.23	809
	810	In this section:
	811
	812	* Enable – a flag to enable heater control;
	813	* Minimum cell temperature, °C;
	814	* Tolerant cell temperature, °C;
	815	* Delay before setting the signal, second;
	816	* Delay before clearing the signal, second;
	817	* Lock the signal until the device is reset;
	818	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	819
	820	As a result of operating the heating algorithm, the “Heater” signal is generated.
	821
	822	Conditions of signal generation:
	823
	824	* 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.
	825
	826	Conditions for clearing the signal:
	827
	828	* 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.
	829
4.24	830	(% class="box infomessage" %)
	831	(((
33.6	832	If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
4.24	833	)))
4.23	834
4.10	835	== 3.6.29 Heater (AUX) control ==
	836
4.25	837	To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
4.24	838
32.2	839	[[Heater (AUX) control settings>>image:1732215282135-420.png\|\|data-xwiki-image-style-alignment="center" height="228" width="361"]]
4.24	840
	841	In this section:
	842
	843	* Enable – a flag to enable heater control;
	844	* Minimum cell temperature, °C;
	845	* Tolerant cell temperature, °C;
	846	* Delay before setting the signal, second;
	847	* Delay before clearing the signal, second;
	848	* Lock the signal until the device is reset;
	849	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	850
	851	As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
	852
	853	Conditions of signal generation:
	854
	855	* 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.
	856
	857	Conditions for clearing the signal:
	858
	859	* 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.
	860
4.25	861	(% class="box infomessage" %)
	862	(((
33.6	863	If there is the "Heater (AUX)" signal, the auxiliary heater relay closes and/or a signal is output to the corresponded digital output.
4.25	864	)))
4.24	865
4.10	866	== 3.6.30 Cooler control ==
	867
4.25	868	To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
	869
33.2	870	[[Cooler control settings>>image:1732215313977-499.png\|\|data-xwiki-image-style-alignment="center" height="219" width="348"]]
4.25	871
	872	In this section:
	873
	874	* Enable – a flag to enable cooler control;
	875	* Maximum cell temperature, °C;
	876	* Tolerant cell temperature, °C;
	877	* Delay before setting the signal, second;
	878	* Delay before clearing the signal, second;
	879	* Lock the signal until the device is reset;
	880	* Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
	881
	882	As a result of operating the cooling algorithm, the "Cooler" signal is generated.
	883
	884	Conditions of signal generation:
	885
	886	* 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.
	887
	888	Conditions for clearing the signal:
	889
	890	* 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.
	891
	892	(% class="box infomessage" %)
	893	(((
33.7	894	If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
4.25	895	)))
	896
4.10	897	== 3.6.31 Fault simulation ==
4.26	898
	899	The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
	900
	901	To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
	902
33.2	903	[[Fault simulation settings>>image:1732215359330-850.png\|\|data-xwiki-image-style-alignment="center" height="732" width="204"]]
4.26	904
	905	In this section:
	906
	907	* Overcurrent;
	908	* Undervoltage;
	909	* Overvoltage;
	910	* Low CH temperature;
	911	* Low DCH temperature;
	912	* High CH temperature;
	913	* High DCH temperature;
	914	* Battery cover error;
	915	* High humidity;
	916	* Water;
	917	* Current sensor error;
	918	* Short circuit;
	919	* Contactor high temperature;
	920	* Unallowable charging;
	921	* Stuck contactor;
	922	* CH contactor feedback error;
	923	* DCH contactor feedback error;
	924	* PCH contactor feedback error;
	925	* CH/DCH contactor feedback error;
	926	* Main contactor feedback error;
	927	* CH contactor cycles error;
	928	* DCH contactor cycles error;
	929	* Logic high temperature;
	930	* Logic offline;
	931	* Cell count error;
	932	* Logic count error;
	933	* Insulation error;
	934	* Critical error;
	935	* Low SOC;
	936	* High charging current;
	937	* Heater;
	938	* Cooler.
	939
	940	To simulate errors, set the necessary flags and click on the "Save" button.

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