Wiki source code of 3.4 Protections

Version 23.2 by Admin on 2025/02/11 14:36

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5.1	2	= Configuration =
1.1	3
	4	(% data-numbered-headings-start="4" style="--numbered-headings-start: 3;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
	5	== Protections ==
	6
	7	The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
	8
21.1	9	(% class="box errormessage" %)
18.1	10	(((
	11	Attention!
	12	Behavior of contactors at different errors is configured in corresponding contactor settings!
	13	)))
	14
2.1	15	=== Overcurrent ===
1.1	16
	17	The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
	18
	19	To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
	20
11.2	21	[[image:1735224601506-488.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
1.1	22
	23	In this section:
	24
	25	* Enable – a flag to enable the protection;
	26	* Maximum charging current, А;
	27	* Tolerant charging current, А;
	28	* Maximum discharging current, А;
	29	* Tolerant discharging current, А;
	30	* Delay before setting the error, millisecond;
	31	* Delay before clearing the error, second;
	32	* Lock – a flag to block the error until the device is restarted.
	33
	34	As a result of operation of the overcurrent protection, the "Overcurrent" error is generated.
	35
	36	Error generation conditions:
	37
	38	* 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;
	39	* 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.
	40
	41	Conditions for removing the error:
	42
	43	* the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
	44	* the current is negative (discharging) or zero, and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
	45
6.2	46	=== Charge current limit ===
	47
17.2	48	The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome\|\|anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
6.2	49
16.46	50	Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
16.15	51
16.8	52	To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
16.2	53
16.8	54	[[image:1735225207687-430.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
	55
	56	* Enable – a flag to enable the protection;
18.1	57	* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
	58	* Region 1: Current difference – a value of maximum absolute current diffr, A;
	59	* Region 2: Current difference – a value of maximum relative current excess, A;
	60	* Delay before setting the error, millisecond;
	61	* Delay before clearing the error, second;
	62	* Lock – a flag to block the error until the device is restarted.
16.8	63
6.2	64	=== Discharge current limit ===
	65
17.2	66	The BMS Main 3 device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome\|\|anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
6.2	67
16.47	68	Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
16.44	69
17.2	70	To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
16.44	71
17.2	72	[[image:1735225942893-869.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
	73
	74	In this section:
	75
	76	* Enable – a flag to enable the protection;
18.1	77	* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
	78	* Region 1: Current difference – a value of maximum absolute current diffr, A;
	79	* Region 2: Current difference – a value of maximum relative current excess, A;
	80	* Delay before setting the error, millisecond;
	81	* Delay before clearing the error, second;
	82	* Lock – a flag to block the error until the device is restarted.
17.2	83
2.1	84	=== Undervoltage ===
1.1	85
	86	The BMS Main 3 device implements battery protection from too low voltage on the cells.
	87
	88	To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
	89
8.2	90	[[image:1735224224155-829.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
1.1	91
	92	In this section:
	93
	94	* Enable – a flag to enable the protection;
	95	* Minimum cell voltage, V;
	96	* Tolerant cell voltage, V;
8.4	97	* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
1.1	98	* Delay before setting the error, millisecond;
	99	* Delay before clearing the error, second;
	100	* Lock – a flag to block the error until the device is restarted.
	101
	102	As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
	103
	104	Error generation conditions:
	105
	106	* 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.
	107
	108	Conditions for removing the error:
	109
	110	* the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
	111
2.1	112	=== Overvoltage ===
1.1	113
	114	The BMS Main 3 device implements battery protection from too high voltage on the cells.
	115
	116	To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
	117
9.2	118	[[image:1735224377252-473.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
1.1	119
	120	In this section:
	121
	122	* Enable – a flag to enable the protection;
	123	* Maximum cell voltage, V;
	124	* Tolerant cell voltage, V;
8.4	125	* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
1.1	126	* Delay before setting the error, millisecond;
	127	* Delay before clearing the error, second;
	128	* Lock – a flag to block the error until the device is restarted.
	129
	130	As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
	131
	132	Error generation conditions:
	133
	134	* 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.
	135
	136	Conditions for removing the error:
	137
	138	* the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
	139
2.1	140	=== Low temperature ===
1.1	141
	142	The BMS Main 3 device implements battery protection from too low temperature.
	143
	144	To change the battery protection parameters from low temperature, select the "Protections → Low temperature" section:
	145
2.1	146	[[image:1733328382382-670.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="137" width="800"]]
1.1	147
	148	In this section:
	149
	150	* Enable – a flag to enable the protection;
	151	* Minimum charge temperature, °C;
	152	* Tolerant charge temperature, °C;
	153	* Minimum discharge temperature, °C;
	154	* Tolerant discharge temperature, °C;
	155	* Delay before setting the error, millisecond;
	156	* Delay before clearing the error, second;
	157	* Lock – a flag to block the error until the device is restarted.
	158
	159	As a result of the operation of the battery protection from low temperature, the "Low temperature (CH)" and/or “Low temperature (DCH)” error are generated.
	160
	161	Error generation conditions:
	162
	163	* 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.
	164
	165	Conditions for removing the error:
	166
	167	* the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
	168
2.1	169	=== High temperature ===
1.1	170
	171	The BMS Main 3 device implements battery protection from too high temperature.
	172
	173	To change the battery protection parameters from high temperature, select the "Protections → High temperature" section:
	174
2.1	175	[[image:1733328399408-279.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
1.1	176
	177	In this section:
	178
	179	* Enable – a flag to enable the protection;
	180	* Maximum charge temperature, °C;
	181	* Tolerant charge temperature, °C;
	182	* Maximum discharge temperature, °C;
	183	* Tolerant discharge temperature, °C;
	184	* Delay before setting the error, millisecond;
	185	* Delay before clearing the error, second;
	186	* Lock – a flag to block the error until the device is restarted.
	187
	188	As a result of the operation of the battery protection from high temperature, the "High temperature (CH)" or “High temperature (DCH)” error is generated.
	189
	190	Error generation conditions:
	191
	192	* 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.
	193
	194	Conditions for removing the error:
	195
	196	* the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
	197
2.1	198	=== Battery cover ===
1.1	199
	200	To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
	201
2.1	202	[[image:1733328399410-529.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
1.1	203
	204	In this section:
	205
	206	* Enable – a flag to enable the protection;
	207	* Delay before setting the error, millisecond;
	208	* Delay before clearing the error, second;
	209	* Lock – a flag to block the error until the device is restarted.
	210
	211	As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
	212
	213	Error generation conditions:
	214
	215	* there is a signal from the battery cover during the “Delay before setting the error” time.
	216
	217	Conditions for removing the error:
	218
	219	* no signal from the battery cover during the “Delay before clearing the error” time.
	220
2.1	221	(% class="box warningmessage" %)
	222	(((
18.1	223	If there is the "Battery cover error", the “Critical error” is generated.
2.1	224	)))
1.1	225
2.1	226	=== High humidity ===
1.1	227
	228	The BMS Main 3 can detect that the battery is operating in high humidity conditions.
	229
	230	To change the detection parameters, select the "Protections → High humidity" section:
	231
2.1	232	[[image:1733328399412-184.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="106" width="800"]]
1.1	233
	234	In this section:
	235
	236	* Enable – a flag to enable the detection;
	237	* Maximum humidity, RH%;
	238	* Tolerant humidity, RH%;
	239	* Delay before setting the error, second;
	240	* Delay before clearing the error, second;
	241	* Lock the error until the device is reset.
	242
	243	As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
	244
	245	Error generation conditions:
	246
	247	* the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
	248
	249	Conditions for removing the error:
	250
	251	* the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
	252
2.1	253	(% class="box infomessage" %)
	254	(((
1.1	255	If there is the "High humidity" error, no action is taken. The error is indicative.
2.1	256	)))
1.1	257
2.1	258	=== Water ===
1.1	259
	260	The BMS Main 3 can protect the battery from working in very high humidity conditions.
	261
	262	To change the protection parameters, select the "Protections → Water" section:
	263
2.1	264	[[image:1733328399413-393.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]]
1.1	265
	266	In this section:
	267
	268	* Enable – a flag to enable the protection;
	269	* Maximum humidity, RH%;
	270	* Tolerant humidity, RH%;
	271	* Delay before setting the error, second;
	272	* Delay before clearing the error, second;
	273	* Lock – lock the error until the device is reset.
	274
	275	As a result of the operation of the battery protection from water, the "Water" error is generated.
	276
	277	Error generation conditions:
	278
	279	* the measured humidity is greater than the “Maximum humidity” value during the “Delay before setting the error” time.
	280
	281	Conditions for removing the error:
	282
	283	* the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
	284
18.1	285	(% class="box warningmessage" %)
2.1	286	(((
18.1	287	If there is the “Water” error, the “Critical error” is generated.
2.1	288	)))
1.1	289
6.4	290	=== Logic high temperature ===
1.1	291
	292	To change the overheating protection parameters of BMS Logic devices, select the "Protections → High Logic temperature" section:
	293
2.1	294	[[image:1733328399414-280.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
1.1	295
	296	In this section:
	297
	298	* Enable – a flag to enable the protection;
	299	* Maximum temperature, °C;
	300	* Tolerant temperature, °C;
	301	* Delay before setting the error, second;
	302	* Delay before clearing the error, second;
	303	* Lock – lock the error until the device is reset.
	304
	305	As a result of the operation of the protection from high temperatures of BMS Logic devices, the "High Logic temperature" is generated.
	306
	307	Error generation conditions:
	308
	309	* a BMS Logic device temperature is higher than the “Maximum temperature” value.
	310
	311	Conditions for removing the error:
	312
	313	* a BMS Logic device temperature is less than the “Tolerant temperature” value.
	314
4.1	315	(% class="box infomessage" %)
2.1	316	(((
4.1	317	Cell balancing is disabled on Logic devices with high temperature.
2.1	318	)))
1.1	319
2.1	320	=== Logic offline ===
1.1	321
	322	To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
	323
2.1	324	[[image:1733328399416-818.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="86" width="800"]]
1.1	325
	326	In this section:
	327
	328	* Enable – a flag to enable the protection;
	329	* Lock – lock the error until the device is reset.
	330
	331	As a result of the protection from loss of communication with BMS Logic devices, the "Logic offline" error is generated.
	332
	333	Error generation conditions:
	334
	335	* at least one of the connected BMS Logic devices does not respond to the commands of the BMS Main device for 10 seconds.
	336
	337	Conditions for removing the error:
	338
	339	* all connected BMS Logic devices respond to the commands of the BMS Main device.
	340
2.1	341	(% class="box warningmessage" %)
	342	(((
18.1	343	If there is the "Logic offline" error, the “Critical error” is generated.
2.1	344	)))
	345
	346	=== Cell count ===
	347
	348	To change the protection parameters from the mismatch of the number of cells to the set value, select the "Protections → Cell count" section:
	349
	350	[[image:1733328415731-223.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="97" width="800"]]
	351
	352	In this section:
	353
	354	* Enable – a flag to enable the protection;
	355	* Number of cells – a number of cells connected to the BMS;
	356	* Delay before setting the error, millisecond;
	357	* Delay before clearing the error, second;
	358	* Lock – a flag to block the error until the device is restarted.
	359
	360	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	361
	362	Error generation conditions:
	363
	364	* the number of cells connected to the BMS is not equal to the “Number of cells” value during the “Delay before setting the error” time.
	365
	366	Conditions for removing the error:
	367
	368	* the number of cells connected to the BMS is equal to the “Number of cells” value during the “Delay before clearing the error” time.
	369
	370	(% class="box warningmessage" %)
	371	(((
18.1	372	If there is the "Cell count error", the “Critical error” is generated.
2.1	373	)))
	374
	375	=== Logic count ===
	376
	377	To change the protection parameters from the mismatch of the number of BMS Logic devices to the set value, select the "Protections → Logic count” section:
	378
	379	[[image:1733328415732-163.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]
	380
	381	In this section:
	382
	383	* Enable – a flag to enable the protection;
	384	* Logic count – a number of BMS Logic devices connected to the BMS Main;
	385	* Scan fast – a flag to scan BMS Logic devices fast (devices with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
	386	* Lock – lock the error until the device is reset.
	387
	388	As a result of the operation of the protection from the mismatch of the number of BMS Logic devices, the "Logic count error" is generated.
	389
	390	Error generation conditions:
	391
	392	* the number of BMS Logic devices connected to the BMS Main is not equal to the “Logic count” value.
	393
	394	Conditions for removing the error:
	395
	396	* the number of BMS Logic devices connected to the BMS Main is equal to the “Logic count” value.
	397
	398	(% class="box warningmessage" %)
	399	(((
18.1	400	If there is the "Logic count error", the “Critical error” is generated.
2.1	401	)))
	402
	403	=== Short circuit ===
	404
	405	The BMS Main 3 device implements the protection of power circuits (contactors, power wires) against overheating caused by the flow of high current for a long time.
	406
	407	To change the protection parameters from short circuit, select the "Protections → Short circuit" section:
	408
12.2	409	[[image:1735224667621-969.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
2.1	410
	411	In this section:
	412
	413	* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
	414	** Enable – a flag to enable the protection;
	415	** Maximum current, A;
	416	** Delay before setting the error, second;
	417	* Delay before clearing the error, second;
	418	* Lock – a flag to block the error until the device is restarted.
	419
	420	If there is a short circuit, the "Short circuit" error is generated.
	421
	422	Error generation conditions:
	423
	424	* 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.
	425
	426	Conditions for removing the error:
	427
	428	* the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
	429
	430	=== High contactor temperature ===
	431
	432	The BMS Main 3 device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
	433
	434	To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
	435
12.2	436	[[image:1735224706573-347.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
2.1	437
	438	In this section:
	439
	440	* Enable – a flag to enable the protection;
	441	* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
	442	* Maximum contactor temperature, °C;
	443	* Tolerant contactor temperature, °C;
	444	* Delay before setting the error, second;
	445	* Delay before clearing the error, second;
	446	* Lock – a flag to block the error until the device is restarted.
	447
	448	If there is a contactor overheat, the "High contactor temperature" error is generated.
	449
	450	Error generation conditions:
	451
	452	* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
	453
	454	Conditions for removing the error:
	455
	456	* the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
	457
	458	=== Current sensor ===
	459
	460	The BMS Main 3 device checks the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
	461
	462	To change the test parameters of the current sensor connection circuits, select the "Protections → Current sensor" section:
	463
	464	[[image:1733328461552-948.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
	465
	466	In this section:
	467
	468	* Enable – a flag to enable the protection;
	469	* Maximum voltage, V;
	470	* Minimum voltage, V;
	471	* Voltage hysteresis – a hysteresis value to clear the error, V;
	472	* Delay before setting the error, second;
	473	* Delay before clearing the error, second;
	474	* Lock – a flag to block the error until the device is restarted.
	475
	476	If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
	477
	478	Error generation conditions:
	479
	480	* the voltage in the signal line or reference line of the current sensor is greater than the “Maximum voltage” value during the “Delay before setting the error” time;
	481	* the voltage in the signal line or reference line of the current sensor is less than the “Minimum voltage” value during the “Delay before setting the error” time.
	482
	483	Conditions for removing the error:
	484
	485	* the voltage in the signal line or reference line of the current sensor is in range from (Minimum voltage + Voltage hysteresis) to (Maximum voltage - Voltage hysteresis) during the “Delay before clearing the error” time.
	486
	487	(% class="box warningmessage" %)
	488	(((
18.1	489	If there is the “Current sensor error”, the “Critical error” is generated.
2.1	490	)))
	491
	492	=== Power switch ===
	493
	494	BMS Main 3 device checks the status of power switches that are used to control the contactors. To change the parameters of the power switch protection, select the "Protections → Power switch" section:
	495
	496	[[image:1733328461554-241.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="99" width="800"]]
	497
	498	In this section:
	499
	500	* Delay before clearing the error, second;
	501	* Lock – a flag to block the error until the device is restarted.
	502
	503	The “Power switch error” occurs when the device detects a shortage in contactor coil control circuit or an overheating of the power switch. Error is removed when the temperature of power switch is normal during “Delay before clearing the error” time.
	504
	505	(% class="box warningmessage" %)
	506	(((
18.1	507	If there is the "Power switch error", the “Critical error” is generated.
2.1	508	)))
	509
22.2	510	=== Power fault ===
	511
22.10	512	BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
22.2	513
23.2	514	(% class="box infomessage" %)
	515	(((
	516	Note: this error can be configured only under "Service" account.
	517	)))
	518
22.10	519	To change the parameters of the power fault error, select the "Protections → Power fault" section:
	520
22.2	521	[[image:1739284154410-676.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
	522
	523	In this section:
	524
	525	* Delay before clearing the error, second;
	526	* Delay before setting the error, millisecond;
22.3	527	* Time to keep power off, millisecond;
	528	* Delay before clearing the error, millisecond;
22.2	529	* Lock – a flag to block the error until the device is restarted.
	530
23.1	531	The “Power fault” occurs when the device detects a shortage or high power consumption in power supplies mentioned above. Error is removed when the power consumption is normal during “Delay before clearing the error” time.
22.2	532
	533	(% class="box warningmessage" %)
	534	(((
23.1	535	If there is the "Power fault", the “Critical error” is generated.
22.2	536	)))
	537
2.1	538	=== Charge contactor cycles ===
	539
	540	The BMS Main 3 device protects the charging contactor against frequent switching.
	541
	542	To change the protection parameters against high frequency switching of the charging contactor, select the "Protections → Charge contactor cycles" section:
	543
	544	[[image:1733328461555-351.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
	545
	546	In this section:
	547
	548	* Enable – a flag to enable the protection;
	549	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	550	* Check time – a time in which the BMS counts switching cycles of the charging contactor, second;
	551	* Delay before setting the error, millisecond;
	552	* Delay before clearing the error, second;
	553	* Lock – a flag to block the error until the device is restarted.
	554
	555	If there is a high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	556
	557	Error generation conditions:
	558
	559	* the number of switching cycles of the charging contactor for the “Check time” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
	560
	561	Conditions for removing the error:
	562
	563	* the “Delay before clearing the error” time has passed since the error was generated.
	564
3.1	565	=== Discharge contactor cycles ===
2.1	566
	567	The BMS Main 3 device protects the discharging contactor against frequent switching.
	568
	569	To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
	570
	571	[[image:1733328461560-301.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
	572
	573	In this section:
	574
	575	* Enable – a flag to enable the protection;
	576	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	577	* Check time – a time in which the BMS counts switching cycles of the charging contactor, second;
	578	* Delay before setting the error, millisecond;
	579	* Delay before clearing the error, second;
	580	* Lock – a flag to block the error until the device is restarted.
	581
	582	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	583
	584	Error generation conditions:
	585
	586	* the number of switching cycles of the discharging contactor for the “Check time” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
	587
	588	Conditions for removing the error:
	589
	590	* the “Delay before clearing the error” time has passed since the error was generated.
	591
	592	=== Temperature sensors ===
	593
	594	The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	595
	596	To change the protection parameters of the temperature sensors circuits, select the "Protections → Temperature sensors" section:
	597
	598	[[image:1733328471918-980.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
	599
	600	In this section:
	601
	602	* Enable – a flag to enable the protection;
	603	* Delay before setting the error, millisecond;
	604	* Delay before clearing the error, second;
	605	* Lock – a flag to block the error until the device is restarted.
	606
	607	If there are no temperature sensors connected to any BMS Logic device or any temperature sensor of the BMS Logic 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.
	608
	609	(% class="box warningmessage" %)
	610	(((
18.1	611	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated.
2.1	612	)))
	613
	614	=== WDT reset ===
	615
	616	If the BMS firmware hangs, the watchdog timer resets the device. The BMS can detect that the device was reset and generates the “WDT reset” error.
	617
	618	To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
	619
	620	[[image:1733328471919-183.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
	621
	622	In this section:
	623
	624	* Enable – a flag to enable the protection;
	625	* Delay before clearing the error, second;
	626	* Lock – a flag to block the error until the device is restarted.
	627
	628	Conditions for removing the error:
	629
	630	* the “Delay before clearing the error” time has passed from the device startup.
	631
	632	(% class="box warningmessage" %)
	633	(((
18.1	634	If there is the "WDT reset" error, the “Critical error” is generated.
2.1	635	)))
	636
4.1	637	=== Unallowable charging ===
2.1	638
	639	The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging contactor to prevent unallowable battery operation.
	640
	641	To change the parameters of the unallowable charging protection, select the "Protections → Unallowable charging" section:
	642
	643	[[image:1733328471920-923.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="97" width="800"]]
	644
	645	In this section:
	646
	647	* Enable – a flag to enable the protection;
	648	* Delay before setting the error, second;
	649	* Delay before clearing the error, second;
	650	* Lock – a flag to block the error until the device is restarted.
	651
	652	If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
	653
	654	Error generation conditions:
	655
	656	* the charging contactor is open, and the battery current is not zero during the “Delay before setting the error” time.
	657
	658	Conditions for removing the error:
	659
	660	* the battery current is zero during the “Delay before clearing the error” time.
	661
5.1	662	=== Stuck contactor ===
2.1	663
	664	The BMS Main 3 device protects contactors against sticking.
	665
	666	To change the protection parameters against sticking, select the "Protections → Stuck contactor" section:
	667
	668	[[image:1733328471920-314.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
	669
	670	In this section:
	671
	672	* Enable – a flag to enable the protection;
	673	* Delay before setting the error, millisecond;
	674	* Delay before clearing the error, second;
	675	* Check voltage – a flag to enable checking of voltage before and after contactors to detect the fact of contactor sticking;
	676	* Abnormal voltage difference – the difference of voltages before and after contactors at which BMS indicates and error;
	677	* Lock – a flag to block the error until the device is restarted.
	678
	679	If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
	680
	681	* The charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set or (if “Check voltage” flag is set) “Charging/Discharging” contactor is open and voltage difference before and after contactors is lower than “Abnormal voltage difference”.
	682
	683	(% class="box warningmessage" %)
	684	(((
18.1	685	If there is the “Stuck contactor” error, the “Critical error” is generated.
2.1	686	)))
	687
	688	=== Contactor feedback ===
	689
	690	The BMS Main 3 device can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, the feedback signal must be connected to the corresponding contactor feedback pin on the X3 header.
	691
	692	To change the contactor feedback check parameters, select the "Protections → Contactor feedback" section:
	693
	694	[[image:1733328487096-144.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="109" width="800"]]
	695
	696	In this section:
	697
	698	* Enable – a flag to enable the protection;
	699	* Delay before setting the error, millisecond;
	700	* Delay before clearing the error, second;
	701	* Lock – a flag to block the error until the device is restarted.
	702
	703	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	704
	705	* a command to the charging, precharging, discharging, charging/discharging or main contactor does not match its feedback value.
	706
	707	(% class="box warningmessage" %)
	708	(((
18.1	709	If there is the “Contactor feedback” error, the “Critical error” is generated.
2.1	710	)))
	711
5.1	712	=== Insulation ===
2.1	713
	714	The BMS Main 3 device can detect a physical signal or CAN bus message from an external insulation monitoring device (such as Bender IR155, iso165C, BMD IMD) to monitor the insulation quality.
	715
	716	To change the insulation monitoring parameters, select the "Protections → Insulation" section:
	717
	718	[[image:1733328487098-963.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="121" width="800"]]
	719
	720	In this section:
	721
	722	* Enable – a flag to enable the protection;
	723	* Checking algorithm – isolation checking mode:
	724	** Always on – check is always performed;
	725	** On charging – check is performed only if “Charger connected” or “Charge request” is set;
	726	** Except charging - check is performed only if “Charger connected” and “Charge request” are cleared;
	727	* Delay before setting the error, second;
	728	* Delay before clearing the error, second;
	729	* Lock – a flag to block the error until the device is restarted.
	730
	731	The “Insulation fault” is set if the “Insulation status” signal is detected during the “Delay before setting the error” time. The “Insulation status” signal can be received through the discrete input or by the CAN bus from an insulation monitoring device. The “Insulation fault” is cleared if the “Insulation status” signal is cleared during the “Delay before clearing the error” time.
	732
	733	(% class="box warningmessage" %)
	734	(((
18.1	735	If there is the “Insulation fault”, the “Critical error” is generated.
2.1	736	)))
	737
	738	=== HVIL ===
	739
	740	The BMS Main 3 allows to control the high voltage interlock loop by applying current to a testing loop and monitoring the difference between the measured current and the required value.
	741
	742	To change the HVIL measurement parameters, select the "Protections → HVIL" section:
	743
13.2	744	[[image:1735224839441-185.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
2.1	745
	746	In this section:
	747
	748	* Enable – a flag to enable the protection;
13.2	749	* Source is OFF: Lower current limit, A;
	750	* Source is OFF: Upper current limit, A;
	751	* Source is ON: Lower current limit, A;
	752	* Source is ON: Upper current limit, A;
2.1	753	* Lock – a flag to block the error until the device is restarted.
	754
14.2	755	If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated. Error clears if interlock loop is being restored.
2.1	756
	757	(% class="box warningmessage" %)
	758	(((
18.1	759	If there is the “HVIL error”, the “Critical error” is generated.
2.1	760	)))
	761
	762	=== Critical error ===
	763
	764	To change the critical error parameters, select the "Protections → Critical error" section:
	765
	766	[[image:1733328487100-898.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
	767
	768	In this section:
	769
	770	* Enable – a flag to enable the protection;
	771	* Delay before setting the error, millisecond;
	772	* Delay before clearing the error, second;
	773	* Lock – a flag to block the error until the device is restarted.
	774
	775	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	776
	777	* “Battery cover error”;
	778	* “Water”;
	779	* “Logic offline”;
	780	* “Cell count error”;
	781	* “ADC error”;
	782	* “Current sensor error”;
	783	* “Shunt offline”;
	784	* “Shunt error”;
	785	* “WDT reset”
	786	* “No temp. sensors”;
	787	* “Temperature sensor shorted”;
	788	* “Stuck contactor”;
	789	* “CH contactor feedback error”;
	790	* “DCH contactor feedback error”;
	791	* “Insulation fault”;
	792	* “PCH contactor feedback error”;
	793	* “CH/DCH contactor feedback error”;
	794	* “Main contactor feedback error”;
	795	* “High voltage fault”;
	796	* “Power switch error”;
18.1	797	* “HVIL error”;
2.1	798	* “Power fault”.
	799
	800	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	801
6.1	802	=== General error ===
2.1	803
	804	To change the general error parameters, select the "Protections → Critical error" section:
	805
14.2	806	[[image:1735224942262-497.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
2.1	807
	808	In this section:
	809
	810	* Enable – a flag to enable the protection;
	811	* Delay before setting the error, millisecond;
	812	* Delay before clearing the error, second;
	813	* Lock – a flag to block the error until the device is restarted;
15.1	814	* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
2.1	815
	816	The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
	817
	818	The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
	819
	820	(% class="box infomessage" %)
	821	(((
20.1	822	The state of the “General error” can be assigned to a discrete output or to a power switch.
2.1	823	)))

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