Wiki source code of 3.6 Battery protection

Version 45.1 by Admin on 2025/02/19 10:36

version	line-number	content
38.1	1	(% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
	2	= Configuration =
	3
	4	(% data-numbered-headings-start="6" style="--numbered-headings-start: 5;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
	5	== Battery protection ==
	6
1.1	7	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.
	8
38.1	9	=== Overcurrent protection ===
1.1	10
	11	To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
2.2	12
37.1	13	[[image:1732211959984-118.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="266" width="386"]]
2.3	14
4.13	15	In this section:
2.3	16
	17	* Enable – a flag to enable the protection;
	18	* Maximum charging current, А;
	19	* Tolerant charging current, А;
	20	* Maximum discharging current, А;
	21	* Tolerant discharging current, А;
	22	* Delay before setting the error, second;
	23	* Delay before clearing the error, second;
	24	* Lock the error until the device is reset – a flag to block the error until the board is restarted.
	25
	26	As a result of operation of the current protection, the "Overcurrent" error is generated.
	27
	28	Error generation conditions:
	29
	30	* 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;
	31	* 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.
	32
	33	Conditions for removing the error:
	34
	35	* 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;
	36	* 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.
	37
	38	(% class="box infomessage" %)
	39	(((
33.3	40	If there is the "Overcurrent" error, the charging and discharging relay open.
2.3	41	)))
3.2	42
38.1	43	=== Undervoltage protection ===
3.2	44
	45	The board implements battery protection from too low or too high voltage on the cells.
	46
	47	To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
	48
44.2	49	[[image:1739960999969-617.png\|\|alt="1739961158202-478.png" data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="351"]]
3.3	50
	51	In this section:
	52
	53	* Enable – a flag to enable the protection;
	54	* Minimum cell voltage, V;
	55	* Tolerant cell voltage, V;
45.1	56	* Check the open circuit voltage instead of the actual voltage – a flag to enable U,,ocv,, correction depending on cell current and resistance;
3.3	57	* Delay before setting the error, second;
	58	* Delay before clearing the error, second;
	59	* Lock the error until the device is reset.
	60
	61	As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
	62
	63	Error generation conditions:
	64
	65	* 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.
	66
	67	Conditions for removing the error:
	68
	69	* 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.
	70
	71	(% class="box infomessage" %)
	72	(((
33.4	73	If there is the "Undervoltage" error, the discharging relay opens.
3.3	74	)))
	75
38.1	76	=== Overvoltage protection ===
4.2	77
	78	To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
	79
44.2	80	[[image:1739961158202-478.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="353"]]
4.2	81
4.3	82	In this section:
	83
	84	* Enable – a flag to enable the protection;
	85	* Maximum cell voltage, V;
	86	* Tolerant cell voltage, V;
45.1	87	* Check the open circuit voltage instead of the actual voltage – a flag to enable U,,ocv,, correction depending on cell current and resistance;
4.3	88	* Delay before setting the error, second;
	89	* Delay before clearing the error, second;
	90	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
	91	* Lock the error until the device is reset.
	92
	93	As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
	94
	95	Error generation conditions:
	96
	97	* 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.
	98
	99	Conditions for removing the error:
	100
	101	* 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.
	102
	103	(% class="box infomessage" %)
	104	(((
33.4	105	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	106	)))
	107
38.1	108	=== Low temperature protection ===
4.3	109
4.11	110	The board implements battery protection from too low temperature.
4.4	111
4.11	112	To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
	113
37.1	114	[[image:1732213953083-955.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="338"]]
4.11	115
	116	In this section:
	117
	118	* Enable – a flag to enable the protection;
	119	* Minimum charging temperature, °C;
	120	* Tolerant charging temperature, °C;
	121	* Minimum discharging temperature, °C;
	122	* Tolerant discharging temperature, °C;
	123	* Delay before setting the error, second;
	124	* Delay before clearing the error, second;
	125	* Lock the error until the device is reset.
	126
	127	As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
	128
	129	Error generation conditions:
	130
	131	* 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.
	132
	133	Conditions for removing the error:
	134
	135	* 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.
	136
	137	(% class="box infomessage" %)
	138	(((
33.4	139	If there is the "Low CH temperature" error, the charging relay opens.
	140	If there is the "Low DCH temperature" error, the discharging relay opens.
4.11	141	)))
	142
38.1	143	=== High temperature protection ===
4.5	144
4.11	145	The board implements battery protection from too high temperature.
	146
	147	To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
	148
37.1	149	[[image:1732213990755-759.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="258" width="370"]]
4.12	150
4.11	151	In this section:
	152
	153	* Enable – a flag to enable the protection;
	154	* Maximum charging temperature, °C;
	155	* Tolerant charging temperature, °C;
	156	* Maximum discharging temperature, °C;
	157	* Tolerant discharging temperature, °C;
	158	* Delay before setting the error, second;
	159	* Delay before clearing the error, second;
	160	* Lock the error until the device is reset.
	161
	162	As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
	163
	164	Error generation conditions:
	165
	166	* 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.
	167
	168	Conditions for removing the error:
	169
	170	* 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.
	171
	172	(% class="box infomessage" %)
	173	(((
33.4	174	If there is the "High CH temperature" error, the charging relay opens.
	175	If there is the "High DCH temperature" error, the discharging relay opens.
4.11	176	)))
	177
38.1	178	=== Battery cover protection ===
4.5	179
4.12	180	To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
	181
37.1	182	[[image:1732214030014-281.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="334"]]
7.2	183
4.12	184	In this section:
	185
	186	* Enable – a flag to enable the protection;
	187	* Delay before setting the error, second;
	188	* Delay before clearing the error, second;
	189	* Lock the error until the device is reset.
	190
	191	As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
	192
	193	Error generation conditions:
	194
	195	* there is a signal from the battery cover during the “Delay before setting the error” time.
	196
	197	Conditions for removing the error:
	198
	199	* no signal from the battery cover during the “Delay before clearing the error” time.
	200
	201	(% class="box warningmessage" %)
	202	(((
33.4	203	If there is the "Battery cover error", the “Critical error” is generated and all relays open.
4.12	204	)))
	205
38.1	206	=== High humidity protection ===
4.10	207
4.13	208	The board can protect the battery from high humidity and water.
	209
	210	To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
	211
37.1	212	[[image:1732214076060-358.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="185" width="321"]]
4.14	213
4.13	214	In this section:
	215
	216	* Enable – a flag to enable the protection;
10.2	217	* Maximum humidity, RH%;
	218	* Tolerant humidity, RH%;
4.13	219	* Delay before setting the error, second;
	220	* Delay before clearing the error, second;
	221	* Lock the error until the device is reset.
	222
	223	As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
	224
	225	Error generation conditions:
	226
	227	* the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
	228
	229	Conditions for removing the error:
	230
	231	* the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
	232
4.14	233	(% class="box infomessage" %)
	234	(((
4.13	235	If there is the "High humidity" error, no action is taken. The error is indicative.
4.14	236	)))
4.13	237
38.1	238	=== Water protection ===
4.10	239
4.14	240	To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
	241
37.1	242	[[image:1732214111990-184.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="199" width="340"]]
4.14	243
	244	In this section:
	245
	246	* Enable – a flag to enable the protection;
	247	* Maximum (water) humidty, RH%;
	248	* Tolerant humidity, RH%;
	249	* Delay before setting the error, second;
	250	* Delay before clearing the error, second;
	251	* Lock the error until the device is reset.
	252
	253	As a result of the operation of the battery protection from water, the "Water" error is generated.
	254
	255	Error generation conditions:
	256
	257	* the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
	258
	259	Conditions for removing the error:
	260
	261	* the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
	262
	263	(% class="box warningmessage" %)
	264	(((
33.4	265	If there is the “Water” error, the “Critical error” is generated and all relays open.
4.14	266	)))
	267
38.1	268	=== Current sensor error ===
4.10	269
4.14	270	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.
	271
	272	To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
	273
37.1	274	[[image:1732214146724-132.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="438" width="365"]]
4.14	275
	276	In this section:
	277
	278	* Enable – a flag to enable the protection;
	279	* Maximum voltage, V;
	280	* Minimum voltage, V;
	281	* Hysteresis voltage – a hysteresis value to clear the error, V;
	282	* Delay before setting the error, second;
	283	* Delay before clearing the error, second;
	284	* Lock the error until the device is reset.
	285
	286	If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
	287
	288	Error generation conditions:
	289
	290	* 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;
	291	* 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.
	292
	293	Conditions for removing the error:
	294
	295	* 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.
	296
4.15	297	(% class="box warningmessage" %)
	298	(((
33.4	299	If there is the “Current sensor error”, the “Critical error” is generated and all relays open.
4.15	300	)))
4.14	301
38.1	302	=== Short circuit protection ===
4.10	303
4.15	304	The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
	305
	306	To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
	307
37.1	308	[[image:1732214207026-822.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="528" width="371"]]
4.15	309
	310	In this section:
	311
	312	* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
	313	** Enable – a flag to enable the protection;
	314	** Maximum current, A;
	315	** Delay before setting the error, second;
	316	* Delay before clearing the error, second;
	317	* Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
	318	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
	319	* Lock the error until the device is reset.
	320
	321	If there is a short circuit, the "Short circuit" error is generated.
	322
	323	Error generation conditions:
	324
	325	* 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.
	326
	327	Conditions for removing the error:
	328
	329	* the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
	330
	331	(% class="box infomessage" %)
	332	(((
33.4	333	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	334	)))
	335
38.1	336	=== Contactor high temperature protection ===
4.10	337
4.15	338	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.
	339
	340	To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
	341
37.1	342	[[image:1732214237851-405.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="234" width="336"]]
4.15	343
	344	In this section:
	345
	346	* Enable – a flag to enable the protection;
	347	* Maximum temperature, °C;
	348	* Tolerant temperature, °C;
	349	* Delay before setting the error, second;
	350	* Delay before clearing the error, second;
	351	* Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
	352	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
	353	* Lock the error until the device is reset.
	354
	355	If there is a contactor overheat, the "Contactor high temperature" error is generated.
	356
	357	Error generation conditions:
	358
	359	* the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
	360
	361	Conditions for removing the error:
	362
	363	* the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
	364
	365	(% class="box infomessage" %)
	366	(((
33.5	367	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	368	)))
	369
38.1	370	=== Unallowable charging protection ===
4.10	371
4.16	372	The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
	373
	374	To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
	375
37.1	376	[[image:1732214272022-547.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="312"]]
4.16	377
	378	In this section:
	379
	380	* Enable – a flag to enable the protection;
	381	* Delay before setting the error, second;
	382	* Delay before clearing the error, second;
	383	* Lock the error until the device is reset.
	384
	385	If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
	386
	387	Error generation conditions:
	388
	389	* the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
	390
	391	Conditions for removing the error:
	392
	393	* the battery current is zero during the “Delay before clearing the error” time.
	394
	395	(% class="box infomessage" %)
	396	(((
33.5	397	If there is the "Unallowable charging" error, the discharging relay opens.
4.16	398	)))
	399
38.1	400	=== Stuck contactor protection ===
4.10	401
4.16	402	The BMS Main 2.x protects contactors against sticking.
	403
	404	To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
	405
37.1	406	[[image:1732214367207-318.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="331"]]
4.16	407
	408	In this section:
	409
	410	* Enable – a flag to enable the protection;
	411	* Delay before setting the error, second;
	412	* Delay before clearing the error, second;
	413	* Lock the error until the device is reset;
	414
	415	If there is a stuck contactor, the “Stuck contactor” error is generated.
	416
	417	Error generation conditions:
	418
	419	* charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
	420
33.7	421	(% class="box warningmessage" %)
	422	(((
	423	If there is the “Stuck contactor error”, the “Critical error” is generated and all relays open.
	424	)))
33.5	425
38.1	426	=== Contactor feedback check ===
4.10	427
40.1	428	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 [[Input and output signals>>doc:Battery management systems.BMS Main 2\.1.3\. Configuration.3\.3 Input and output signals.WebHome]]).
4.16	429
	430	To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
	431
37.1	432	[[image:1732214400721-274.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="150" width="323"]]
4.17	433
	434	In this section:
	435
	436	* Enable – a flag to enable the protection;
	437	* Delay before setting the error, second;
	438	* Delay before clearing the error, second;
	439	* Lock the error until the device is reset;
	440
	441	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	442
	443	* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
	444
33.8	445	(% class="box warningmessage" %)
	446	(((
	447	If there is the contactor feedback error, the “Critical error” is generated and all relays open.
	448	)))
33.5	449
38.1	450	=== Charging contactor cycles protection ===
4.10	451
4.18	452	The BMS protects the charging contactor against frequent switching.
4.17	453
4.18	454	To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
	455
37.1	456	[[image:1732214432750-543.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="260" width="336"]]
4.18	457
	458	In this section:
	459
	460	* Enable – a flag to enable the protection;
	461	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	462	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	463	* Delay before setting the error, second;
	464	* Delay before clearing the error, second;
	465	* Lock the error until the device is reset;
	466	* Cycles – a number of the charging contactor switchings made during battery operation.
	467
	468	If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	469
	470	Error generation conditions:
	471
	472	* 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.
	473
	474	Conditions for removing the error:
	475
	476	* the “Delay before clearing the error” time has passed since the error was generated.
	477
	478	(% class="box infomessage" %)
	479	(((
33.5	480	If there is the "CH contactor cycles error" error, the charging relay opens.
4.18	481	)))
	482
38.1	483	=== Discharging contactor cycles protection ===
4.10	484
4.18	485	The BMS protects the discharging contactor against frequent switching.
	486
	487	To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
	488
37.1	489	[[image:1732214468462-541.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="269" width="346"]]
4.18	490
	491	In this section:
	492
	493	* Enable – a flag to enable the protection;
	494	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	495	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	496	* Delay before setting the error, second;
	497	* Delay before clearing the error, second;
	498	* Lock the error until the device is reset;
	499	* Cycles – a number of the charging contactor switchings made during battery operation.
	500
	501	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	502
	503	Error generation conditions:
	504
	505	* 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.
	506
	507	Conditions for removing the error:
	508
	509	* the “Delay before clearing the error” time has passed since the error was generated.
	510
	511	(% class="box infomessage" %)
	512	(((
33.5	513	If there is the "DCH contactor cycles error" error, the discharging relay opens.
4.18	514	)))
	515
38.1	516	=== Temperature sensor error ===
4.10	517
4.18	518	The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	519
	520	To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
	521
37.1	522	[[image:1732214501360-654.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="334"]]
4.18	523
	524	In this section:
	525
	526	* Enable – a flag to enable the protection;
	527	* Delay before setting the error, second;
	528	* Delay before clearing the error, second;
	529	* Lock the error until the device is reset.
	530
	531	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.
	532
4.19	533	(% class="box warningmessage" %)
	534	(((
33.6	535	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.
4.19	536	)))
4.18	537
38.1	538	=== Logic high temperature protection ===
4.10	539
4.19	540	To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
	541
37.1	542	[[image:1732214545352-111.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="156" width="309"]]
4.19	543
	544	In this section:
	545
	546	* Enable – a flag to enable the protection;
	547	* Maximum Logic temperature, °C;
	548	* Tolerant Logic temperature, °C;
	549	* Lock the error until the device is reset.
	550
	551	As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
	552
	553	Error generation conditions:
	554
	555	* a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
	556
	557	Conditions for removing the error:
	558
	559	* a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
	560
	561	(% class="box infomessage" %)
	562	(((
33.3	563	Cell balancing is prohibited for overheated boards.
4.19	564	)))
	565
38.1	566	=== Logic offline protection ===
4.10	567
4.19	568	To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
	569
37.1	570	[[image:1732214579147-515.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="204"]]
4.19	571
4.20	572	In this section:
4.19	573
4.20	574	* Enable – a flag to enable the protection;
	575	* Lock the error until the device is reset.
	576
	577	As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
	578
	579	Error generation conditions:
	580
	581	* 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.
	582
	583	Conditions for removing the error:
	584
	585	* all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
	586
	587	(% class="box warningmessage" %)
	588	(((
33.6	589	If there is the "Logic offline" error, the “Critical error” is generated and all relays open.
4.20	590	)))
	591
38.1	592	=== Cell count protection ===
4.10	593
4.20	594	To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
	595
37.1	596	[[image:1732214641606-453.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="341"]]
4.20	597
	598	In this section:
	599
	600	* Enable – a flag to enable the protection;
	601	* Cell count – a number of cells connected to the BMS;
	602	* Delay before setting the error, second;
	603	* Delay before clearing the error, second;
	604	* Lock the error until the device is reset.
	605
	606	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	607
	608	Error generation conditions:
	609
	610	* the number of cells connected to the BMS is not equal to the “Cell count” value during the “Delay before setting the error” time.
	611
	612	Conditions for removing the error:
	613
	614	* the number of cells connected to the BMS is equal to the “Cell count” value during the “Delay before clearing the error” time.
	615
	616	(% class="box warningmessage" %)
	617	(((
33.6	618	If there is the "Cell count error", the “Critical error” is generated and all relays open.
4.20	619	)))
	620
38.1	621	=== Logic count protection ===
4.10	622
4.20	623	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":
	624
37.1	625	[[image:1732214675358-202.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="163" width="230"]]
4.20	626
	627	In this section:
	628
	629	* Enable – a flag to enable the protection;
	630	* Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
42.1	631	* Fast scanning – 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);
4.20	632	* Lock the error until the device is reset.
	633
	634	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.
	635
	636	Error generation conditions:
	637
	638	* the number of BMS Logic boards connected to the BMS Main 2.x is not equal to the “Logic count” value.
	639
	640	Conditions for removing the error:
	641
	642	* the number of BMS Logic boards connected to the BMS Main is equal to the “Logic count” value.
	643
	644	(% class="box warningmessage" %)
	645	(((
33.6	646	If there is the "Logic count error", the “Critical error” is generated and all relays open.
4.20	647	)))
	648
38.1	649	=== WDT protection ===
4.10	650
4.20	651	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.
	652
	653	To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
	654
37.1	655	[[image:1732214703914-144.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="323"]]
4.20	656
4.21	657	In this section:
	658
	659	* Enable – a flag to enable the protection;
	660	* Delay before clearing the error, second;
	661	* Lock the error until the device is reset.
	662
	663	Conditions for removing the error:
	664
	665	* the “Delay before clearing the error” time has passed from the board startup.
	666
4.22	667	(% class="box warningmessage" %)
	668	(((
35.1	669	If there is the "WDT reset" error, the “Critical error” is generated and all relays open.
4.22	670	)))
4.21	671
38.1	672	=== Insulation monitoring ===
4.10	673
4.22	674	BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
	675
	676	To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
	677
37.1	678	[[image:1732214731490-961.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="315"]]
4.22	679
	680	In this section:
	681
	682	* Enable – a flag to enable the protection;
42.1	683	* Algorithm:
	684	** Always;
	685	** On charging;
	686	** Except charging;
4.22	687	* Delay before setting the error, second;
	688	* Delay before clearing the error, second;
	689	* Lock the error until the device is reset.
	690
	691	Error is set if corresponding discrete input is set up and it received logical zero.
	692
33.9	693	(% class="box warningmessage" %)
	694	(((
35.1	695	If there is the "Insulation monitoring" error, the “Critical error” is generated and all relays open.
33.9	696	)))
	697
38.1	698	=== Critical error parameters ===
4.10	699
4.22	700	To change the critical error parameters, select the menu "Protections → Critical error parameters":
	701
37.1	702	[[image:1732214761141-983.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="158" width="348"]]
4.22	703
	704	In this section:
	705
	706	* Enable – a flag to enable the protection;
	707	* Delay before setting the error, second;
	708	* Delay before clearing the error, second;
	709	* Lock the error until the device is reset.
	710
	711	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	712
	713	* “Battery cover error”;
	714	* “Water”;
	715	* “Logic offline”;
	716	* “Cell count error”;
	717	* “Logic count error”;
	718	* “ADC error”;
	719	* “No temp. sensors”;
	720	* “Temp. sensor is shorted”;
	721	* “Current sensor error”;
34.1	722	* "Stuck contactor";
	723	* "Contactor feedback";
4.22	724	* “Shunt offline”;
	725	* “Shunt error”;
	726	* “Settings error”;
33.9	727	* “WDT reset”
	728	* "Insulation monitoring".
4.22	729
	730	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	731
	732	(% class="box warningmessage" %)
	733	(((
	734	If there is the “Critical error”, all relays open.
	735	)))
	736
38.1	737	=== General error parameters ===
4.10	738
27.2	739	To change the general error parameters, select the menu "Protections → General error parameters":
	740
37.1	741	[[image:1732214987517-111.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="535" width="349"]]
27.2	742
	743	In this section:
	744
	745	* Enable – a flag to enable the protection;
	746	* Delay before setting the error, second;
	747	* Delay before clearing the error, second;
27.3	748	* Lock the error until the device is reset;
	749	* Errors – a section to select errors that should trigger General error.
27.2	750
41.1	751	The general error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
27.3	752
28.2	753	The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
	754
33.6	755	(% class="box infomessage" %)
	756	(((
28.2	757	The "General error" is //indicative //and can be linked to any discrete output of the board.
33.6	758	)))
28.2	759
38.1	760	=== Low SOC signal ===
4.10	761
4.22	762	To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
	763
37.1	764	[[image:1732215174961-645.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="186" width="325"]]
4.22	765
	766	In this section:
	767
	768	* Enable – a flag to enable signal generation;
	769	* Minimum SOC, %;
	770	* Tolerant SOC, %;
	771	* Delay before setting the signal, second;
	772	* Delay before clearing the signal, second;
	773	* Lock the signal until the device is reset.
	774
	775	Signal generation conditions:
	776
	777	* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
	778
	779	Conditions for clearing the signal:
	780
	781	* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
	782
33.6	783	(% class="box infomessage" %)
	784	(((
4.23	785	The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
33.6	786	)))
4.22	787
38.1	788	=== High charging current signal ===
4.10	789
4.23	790	To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
	791
37.1	792	[[image:1732215211714-445.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="181" width="322"]]
4.23	793
	794	In this section:
	795
	796	* Enable – a flag to enable signal generation;
	797	* Maximum charging current, А;
	798	* Tolerant charging current, А;
	799	* Delay before setting the signal, second;
	800	* Delay before clearing the signal, second;
	801	* Lock the signal until the device is reset.
	802
	803	Signal generation conditions:
	804
	805	* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
	806
	807	Conditions for clearing the signal:
	808
	809	* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
	810
33.6	811	(% class="box infomessage" %)
	812	(((
4.23	813	The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
33.6	814	)))
4.23	815
38.1	816	=== Heater control ===
4.10	817
4.23	818	To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
	819
37.1	820	[[image:1732215252650-791.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="233" width="370"]]
4.23	821
	822	In this section:
	823
	824	* Enable – a flag to enable heater control;
	825	* Minimum cell temperature, °C;
	826	* Tolerant cell temperature, °C;
	827	* Delay before setting the signal, second;
	828	* Delay before clearing the signal, second;
	829	* Lock the signal until the device is reset;
	830	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	831
	832	As a result of operating the heating algorithm, the “Heater” signal is generated.
	833
	834	Conditions of signal generation:
	835
	836	* 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.
	837
	838	Conditions for clearing the signal:
	839
	840	* 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.
	841
4.24	842	(% class="box infomessage" %)
	843	(((
33.6	844	If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
4.24	845	)))
4.23	846
38.1	847	=== Heater (AUX) control ===
4.10	848
4.25	849	To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
4.24	850
37.1	851	[[image:1732215282135-420.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="361"]]
4.24	852
	853	In this section:
	854
	855	* Enable – a flag to enable heater control;
	856	* Minimum cell temperature, °C;
	857	* Tolerant cell temperature, °C;
	858	* Delay before setting the signal, second;
	859	* Delay before clearing the signal, second;
	860	* Lock the signal until the device is reset;
	861	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	862
	863	As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
	864
	865	Conditions of signal generation:
	866
	867	* 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.
	868
	869	Conditions for clearing the signal:
	870
	871	* 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.
	872
4.25	873	(% class="box infomessage" %)
	874	(((
33.6	875	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	876	)))
4.24	877
38.1	878	=== Cooler control ===
4.10	879
4.25	880	To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
	881
37.1	882	[[image:1732215313977-499.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="219" width="348"]]
4.25	883
	884	In this section:
	885
	886	* Enable – a flag to enable cooler control;
	887	* Maximum cell temperature, °C;
	888	* Tolerant cell temperature, °C;
	889	* Delay before setting the signal, second;
	890	* Delay before clearing the signal, second;
	891	* Lock the signal until the device is reset;
	892	* Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
	893
	894	As a result of operating the cooling algorithm, the "Cooler" signal is generated.
	895
	896	Conditions of signal generation:
	897
	898	* 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.
	899
	900	Conditions for clearing the signal:
	901
	902	* 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.
	903
	904	(% class="box infomessage" %)
	905	(((
33.7	906	If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
4.25	907	)))
	908
38.1	909	=== Fault simulation ===
4.26	910
	911	The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
	912
	913	To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
	914
37.1	915	[[image:1732215359330-850.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="732" width="204"]]
4.26	916
	917	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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