Wiki source code of 3.4 Protections

Version 16.7 by Admin on 2024/12/26 15:02

version	line-number	content
1.1	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;" %)
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
2.1	9	=== Overcurrent ===
1.1	10
	11	The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
	12
	13	To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
	14
11.2	15	[[image:1735224601506-488.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
1.1	16
	17	In this section:
	18
	19	* Enable – a flag to enable the protection;
	20	* Maximum charging current, А;
	21	* Tolerant charging current, А;
	22	* Maximum discharging current, А;
	23	* Tolerant discharging current, А;
	24	* Delay before setting the error, millisecond;
	25	* Delay before clearing the error, second;
	26	* Lock – a flag to block the error until the device is restarted.
	27
	28	As a result of operation of the overcurrent protection, the "Overcurrent" error is generated.
	29
	30	Error generation conditions:
	31
	32	* 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;
	33	* 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.
	34
	35	Conditions for removing the error:
	36
	37	* 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;
	38	* 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.
	39
2.1	40	(% class="box infomessage" %)
	41	(((
	42	If there is the "Overcurrent" error, the charging and discharging contactors open.
	43	)))
1.1	44
6.2	45	=== Charge current limit ===
	46
16.7	47	The BMS Main 3 device can check the charging current with the limit based on the Charge map. If current is more than estimated maxumim, the
6.2	48
16.2	49	[[image:1735225207687-430.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
	50
6.2	51	=== Discharge current limit ===
	52
6.3	53	TBA
6.2	54
2.1	55	=== Undervoltage ===
1.1	56
	57	The BMS Main 3 device implements battery protection from too low voltage on the cells.
	58
	59	To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
	60
8.2	61	[[image:1735224224155-829.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
1.1	62
	63	In this section:
	64
	65	* Enable – a flag to enable the protection;
	66	* Minimum cell voltage, V;
	67	* Tolerant cell voltage, V;
8.4	68	* 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	69	* Delay before setting the error, millisecond;
	70	* Delay before clearing the error, second;
	71	* Lock – a flag to block the error until the device is restarted.
	72
	73	As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
	74
	75	Error generation conditions:
	76
	77	* 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.
	78
	79	Conditions for removing the error:
	80
	81	* 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.
	82
2.1	83	(% class="box infomessage" %)
	84	(((
	85	If there is the "Undervoltage" error, the discharging contactor opens.
	86	)))
1.1	87
2.1	88	=== Overvoltage ===
1.1	89
	90	The BMS Main 3 device implements battery protection from too high voltage on the cells.
	91
	92	To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
	93
9.2	94	[[image:1735224377252-473.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
1.1	95
	96	In this section:
	97
	98	* Enable – a flag to enable the protection;
	99	* Maximum cell voltage, V;
	100	* Tolerant cell voltage, V;
8.4	101	* 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	102	* Delay before setting the error, millisecond;
	103	* Delay before clearing the error, second;
	104	* Lock – a flag to block the error until the device is restarted.
	105
	106	As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
	107
	108	Error generation conditions:
	109
	110	* 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.
	111
	112	Conditions for removing the error:
	113
	114	* 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.
	115
2.1	116	(% class="box infomessage" %)
	117	(((
	118	If there is the "Overvoltage" error, the charging contactor and discharging contactor open (if the “Switch off the discharging contactor on error” flag is set).
	119	)))
1.1	120
2.1	121	=== Low temperature ===
1.1	122
	123	The BMS Main 3 device implements battery protection from too low temperature.
	124
	125	To change the battery protection parameters from low temperature, select the "Protections → Low temperature" section:
	126
2.1	127	[[image:1733328382382-670.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="137" width="800"]]
1.1	128
	129	In this section:
	130
	131	* Enable – a flag to enable the protection;
	132	* Minimum charge temperature, °C;
	133	* Tolerant charge temperature, °C;
	134	* Minimum discharge temperature, °C;
	135	* Tolerant discharge temperature, °C;
	136	* Delay before setting the error, millisecond;
	137	* Delay before clearing the error, second;
	138	* Lock – a flag to block the error until the device is restarted.
	139
	140	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.
	141
	142	Error generation conditions:
	143
	144	* 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.
	145
	146	Conditions for removing the error:
	147
	148	* 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.
	149
2.1	150	(% class="box infomessage" %)
	151	(((
	152	If there is the "Low temperature (CH)" error, the charging contactor opens.
	153	If there is the "Low temperature (DCH)" error, the discharging contactor opens.
	154	)))
1.1	155
2.1	156	=== High temperature ===
1.1	157
	158	The BMS Main 3 device implements battery protection from too high temperature.
	159
	160	To change the battery protection parameters from high temperature, select the "Protections → High temperature" section:
	161
2.1	162	[[image:1733328399408-279.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
1.1	163
	164	In this section:
	165
	166	* Enable – a flag to enable the protection;
	167	* Maximum charge temperature, °C;
	168	* Tolerant charge temperature, °C;
	169	* Maximum discharge temperature, °C;
	170	* Tolerant discharge temperature, °C;
	171	* Delay before setting the error, millisecond;
	172	* Delay before clearing the error, second;
	173	* Lock – a flag to block the error until the device is restarted.
	174
	175	As a result of the operation of the battery protection from high temperature, the "High temperature (CH)" or “High temperature (DCH)” error is generated.
	176
	177	Error generation conditions:
	178
	179	* 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.
	180
	181	Conditions for removing the error:
	182
	183	* 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.
	184
2.1	185	(% class="box infomessage" %)
	186	(((
	187	If there is the "High temperature (CH)" error, the charging contactor opens.
	188	If there is the "High temperature (DCH)" error, the discharging contactor opens.
	189	)))
1.1	190
2.1	191	=== Battery cover ===
1.1	192
	193	To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
	194
2.1	195	[[image:1733328399410-529.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
1.1	196
	197	In this section:
	198
	199	* Enable – a flag to enable the protection;
	200	* Delay before setting the error, millisecond;
	201	* Delay before clearing the error, second;
	202	* Lock – a flag to block the error until the device is restarted.
	203
	204	As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
	205
	206	Error generation conditions:
	207
	208	* there is a signal from the battery cover during the “Delay before setting the error” time.
	209
	210	Conditions for removing the error:
	211
	212	* no signal from the battery cover during the “Delay before clearing the error” time.
	213
2.1	214	(% class="box warningmessage" %)
	215	(((
	216	If there is the "Battery cover error", the “Critical error” is generated and all contactors open.
	217	)))
1.1	218
2.1	219	=== High humidity ===
1.1	220
	221	The BMS Main 3 can detect that the battery is operating in high humidity conditions.
	222
	223	To change the detection parameters, select the "Protections → High humidity" section:
	224
2.1	225	[[image:1733328399412-184.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="106" width="800"]]
1.1	226
	227	In this section:
	228
	229	* Enable – a flag to enable the detection;
	230	* Maximum humidity, RH%;
	231	* Tolerant humidity, RH%;
	232	* Delay before setting the error, second;
	233	* Delay before clearing the error, second;
	234	* Lock the error until the device is reset.
	235
	236	As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
	237
	238	Error generation conditions:
	239
	240	* the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
	241
	242	Conditions for removing the error:
	243
	244	* the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
	245
2.1	246	(% class="box infomessage" %)
	247	(((
1.1	248	If there is the "High humidity" error, no action is taken. The error is indicative.
2.1	249	)))
1.1	250
2.1	251	=== Water ===
1.1	252
	253	The BMS Main 3 can protect the battery from working in very high humidity conditions.
	254
	255	To change the protection parameters, select the "Protections → Water" section:
	256
2.1	257	[[image:1733328399413-393.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]]
1.1	258
	259	In this section:
	260
	261	* Enable – a flag to enable the protection;
	262	* Maximum humidity, RH%;
	263	* Tolerant humidity, RH%;
	264	* Delay before setting the error, second;
	265	* Delay before clearing the error, second;
	266	* Lock – lock the error until the device is reset.
	267
	268	As a result of the operation of the battery protection from water, the "Water" error is generated.
	269
	270	Error generation conditions:
	271
	272	* the measured humidity is greater than the “Maximum humidity” value during the “Delay before setting the error” time.
	273
	274	Conditions for removing the error:
	275
	276	* the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
	277
2.1	278	(% class="box infomessage" %)
	279	(((
	280	If there is the “Water” error, the “Critical error” is generated and all relays open.
	281	)))
1.1	282
6.4	283	=== Logic high temperature ===
1.1	284
	285	To change the overheating protection parameters of BMS Logic devices, select the "Protections → High Logic temperature" section:
	286
2.1	287	[[image:1733328399414-280.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
1.1	288
	289	In this section:
	290
	291	* Enable – a flag to enable the protection;
	292	* Maximum temperature, °C;
	293	* Tolerant temperature, °C;
	294	* Delay before setting the error, second;
	295	* Delay before clearing the error, second;
	296	* Lock – lock the error until the device is reset.
	297
	298	As a result of the operation of the protection from high temperatures of BMS Logic devices, the "High Logic temperature" is generated.
	299
	300	Error generation conditions:
	301
	302	* a BMS Logic device temperature is higher than the “Maximum temperature” value.
	303
	304	Conditions for removing the error:
	305
	306	* a BMS Logic device temperature is less than the “Tolerant temperature” value.
	307
4.1	308	(% class="box infomessage" %)
2.1	309	(((
4.1	310	Cell balancing is disabled on Logic devices with high temperature.
2.1	311	)))
1.1	312
2.1	313	=== Logic offline ===
1.1	314
	315	To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
	316
2.1	317	[[image:1733328399416-818.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="86" width="800"]]
1.1	318
	319	In this section:
	320
	321	* Enable – a flag to enable the protection;
	322	* Lock – lock the error until the device is reset.
	323
	324	As a result of the protection from loss of communication with BMS Logic devices, the "Logic offline" error is generated.
	325
	326	Error generation conditions:
	327
	328	* at least one of the connected BMS Logic devices does not respond to the commands of the BMS Main device for 10 seconds.
	329
	330	Conditions for removing the error:
	331
	332	* all connected BMS Logic devices respond to the commands of the BMS Main device.
	333
2.1	334	(% class="box warningmessage" %)
	335	(((
	336	If there is the "Logic offline" error, the “Critical error” is generated and all relays open.
	337	)))
	338
	339	=== Cell count ===
	340
	341	To change the protection parameters from the mismatch of the number of cells to the set value, select the "Protections → Cell count" section:
	342
	343	[[image:1733328415731-223.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="97" width="800"]]
	344
	345	In this section:
	346
	347	* Enable – a flag to enable the protection;
	348	* Number of cells – a number of cells connected to the BMS;
	349	* Delay before setting the error, millisecond;
	350	* Delay before clearing the error, second;
	351	* Lock – a flag to block the error until the device is restarted.
	352
	353	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	354
	355	Error generation conditions:
	356
	357	* 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.
	358
	359	Conditions for removing the error:
	360
	361	* the number of cells connected to the BMS is equal to the “Number of cells” value during the “Delay before clearing the error” time.
	362
	363	(% class="box warningmessage" %)
	364	(((
	365	If there is the "Cell count error", the “Critical error” is generated and all relays open.
	366	)))
	367
	368	=== Logic count ===
	369
	370	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:
	371
	372	[[image:1733328415732-163.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]
	373
	374	In this section:
	375
	376	* Enable – a flag to enable the protection;
	377	* Logic count – a number of BMS Logic devices connected to the BMS Main;
	378	* 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);
	379	* Lock – lock the error until the device is reset.
	380
	381	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.
	382
	383	Error generation conditions:
	384
	385	* the number of BMS Logic devices connected to the BMS Main is not equal to the “Logic count” value.
	386
	387	Conditions for removing the error:
	388
	389	* the number of BMS Logic devices connected to the BMS Main is equal to the “Logic count” value.
	390
	391	(% class="box warningmessage" %)
	392	(((
	393	If there is the "Logic count error", the “Critical error” is generated and all relays open.
	394	)))
	395
	396	=== Short circuit ===
	397
	398	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.
	399
	400	To change the protection parameters from short circuit, select the "Protections → Short circuit" section:
	401
12.2	402	[[image:1735224667621-969.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
2.1	403
	404	In this section:
	405
	406	* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
	407	** Enable – a flag to enable the protection;
	408	** Maximum current, A;
	409	** Delay before setting the error, second;
	410	* Delay before clearing the error, second;
	411	* Lock – a flag to block the error until the device is restarted.
	412
	413	If there is a short circuit, the "Short circuit" error is generated.
	414
	415	Error generation conditions:
	416
	417	* 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.
	418
	419	Conditions for removing the error:
	420
	421	* the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
	422
	423	(% class="box infomessage" %)
	424	(((
	425	If there is the "Short circuit" error, charging contactor opens (if the “Switch off the charging contactor on error” flag is set) and discharging contactor opens (if the “Switch off the discharging contactor on error flag” is set).
	426	)))
	427
	428	=== High contactor temperature ===
	429
	430	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.
	431
	432	To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
	433
12.2	434	[[image:1735224706573-347.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
2.1	435
	436	In this section:
	437
	438	* Enable – a flag to enable the protection;
	439	* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
	440	* Maximum contactor temperature, °C;
	441	* Tolerant contactor temperature, °C;
	442	* Delay before setting the error, second;
	443	* Delay before clearing the error, second;
	444	* Lock – a flag to block the error until the device is restarted.
	445
	446	If there is a contactor overheat, the "High contactor temperature" error is generated.
	447
	448	Error generation conditions:
	449
	450	* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
	451
	452	Conditions for removing the error:
	453
	454	* the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
	455
	456	(% class="box infomessage" %)
	457	(((
	458	If there is the "High contactor temperature" error, charging contactor opens (if the “Switch off the charging contactor on error” flag is set) and discharging contactor opens (if the “Switch off the discharging contactor on error” flag is set).
	459	)))
	460
	461	=== Current sensor ===
	462
	463	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.
	464
	465	To change the test parameters of the current sensor connection circuits, select the "Protections → Current sensor" section:
	466
	467	[[image:1733328461552-948.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
	468
	469	In this section:
	470
	471	* Enable – a flag to enable the protection;
	472	* Maximum voltage, V;
	473	* Minimum voltage, V;
	474	* Voltage hysteresis – a hysteresis value to clear the error, V;
	475	* Delay before setting the error, second;
	476	* Delay before clearing the error, second;
	477	* Lock – a flag to block the error until the device is restarted.
	478
	479	If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
	480
	481	Error generation conditions:
	482
	483	* 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;
	484	* 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.
	485
	486	Conditions for removing the error:
	487
	488	* 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.
	489
	490	(% class="box warningmessage" %)
	491	(((
	492	If there is the “Current sensor error”, the “Critical error” is generated and all relays open.
	493	)))
	494
	495	=== Power switch ===
	496
	497	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:
	498
	499	[[image:1733328461554-241.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="99" width="800"]]
	500
	501	In this section:
	502
	503	* Delay before clearing the error, second;
	504	* Lock – a flag to block the error until the device is restarted.
	505
	506	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.
	507
	508	(% class="box warningmessage" %)
	509	(((
	510	If there is the "Power switch error", the “Critical error” is generated and all relays open.
	511	)))
	512
6.4	513	=== Power fault ===
	514
	515	TBA
	516
2.1	517	=== Charge contactor cycles ===
	518
	519	The BMS Main 3 device protects the charging contactor against frequent switching.
	520
	521	To change the protection parameters against high frequency switching of the charging contactor, select the "Protections → Charge contactor cycles" section:
	522
	523	[[image:1733328461555-351.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
	524
	525	In this section:
	526
	527	* Enable – a flag to enable the protection;
	528	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	529	* Check time – a time in which the BMS counts switching cycles of the charging contactor, second;
	530	* Delay before setting the error, millisecond;
	531	* Delay before clearing the error, second;
	532	* Lock – a flag to block the error until the device is restarted.
	533
	534	If there is a high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	535
	536	Error generation conditions:
	537
	538	* 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.
	539
	540	Conditions for removing the error:
	541
	542	* the “Delay before clearing the error” time has passed since the error was generated.
	543
	544	(% class="box infomessage" %)
	545	(((
	546	If there is the "CH contactor cycles error" error, the charging contactor opens.
	547	)))
	548
3.1	549	=== Discharge contactor cycles ===
2.1	550
	551	The BMS Main 3 device protects the discharging contactor against frequent switching.
	552
	553	To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
	554
	555	[[image:1733328461560-301.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
	556
	557	In this section:
	558
	559	* Enable – a flag to enable the protection;
	560	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	561	* Check time – a time in which the BMS counts switching cycles of the charging contactor, second;
	562	* Delay before setting the error, millisecond;
	563	* Delay before clearing the error, second;
	564	* Lock – a flag to block the error until the device is restarted.
	565
	566	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	567
	568	Error generation conditions:
	569
	570	* 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.
	571
	572	Conditions for removing the error:
	573
	574	* the “Delay before clearing the error” time has passed since the error was generated.
	575
	576	(% class="box infomessage" %)
	577	(((
	578	If there is the "DCH contactor cycles error" error, the discharging contactor opens.
	579	)))
	580
	581	=== Temperature sensors ===
	582
	583	The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	584
	585	To change the protection parameters of the temperature sensors circuits, select the "Protections → Temperature sensors" section:
	586
	587	[[image:1733328471918-980.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
	588
	589	In this section:
	590
	591	* Enable – a flag to enable the protection;
	592	* Delay before setting the error, millisecond;
	593	* Delay before clearing the error, second;
	594	* Lock – a flag to block the error until the device is restarted.
	595
	596	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.
	597
	598	(% class="box warningmessage" %)
	599	(((
4.1	600	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.
2.1	601	)))
	602
	603	=== WDT reset ===
	604
	605	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.
	606
	607	To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
	608
	609	[[image:1733328471919-183.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
	610
	611	In this section:
	612
	613	* Enable – a flag to enable the protection;
	614	* Delay before clearing the error, second;
	615	* Lock – a flag to block the error until the device is restarted.
	616
	617	Conditions for removing the error:
	618
	619	* the “Delay before clearing the error” time has passed from the device startup.
	620
	621	(% class="box warningmessage" %)
	622	(((
	623	If there is the "WDT reset" error, the “Critical error” is generated and all relays open.
	624	)))
	625
4.1	626	=== Unallowable charging ===
2.1	627
	628	The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging contactor to prevent unallowable battery operation.
	629
	630	To change the parameters of the unallowable charging protection, select the "Protections → Unallowable charging" section:
	631
	632	[[image:1733328471920-923.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="97" width="800"]]
	633
	634	In this section:
	635
	636	* Enable – a flag to enable the protection;
	637	* Delay before setting the error, second;
	638	* Delay before clearing the error, second;
	639	* Lock – a flag to block the error until the device is restarted.
	640
	641	If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
	642
	643	Error generation conditions:
	644
	645	* the charging contactor is open, and the battery current is not zero during the “Delay before setting the error” time.
	646
	647	Conditions for removing the error:
	648
	649	* the battery current is zero during the “Delay before clearing the error” time.
	650
	651	(% class="box infomessage" %)
	652	(((
	653	If there is the "Unallowable charging" error, the discharging contactor opens.
	654	)))
	655
5.1	656	=== Stuck contactor ===
2.1	657
	658	The BMS Main 3 device protects contactors against sticking.
	659
	660	To change the protection parameters against sticking, select the "Protections → Stuck contactor" section:
	661
	662	[[image:1733328471920-314.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
	663
	664	In this section:
	665
	666	* Enable – a flag to enable the protection;
	667	* Delay before setting the error, millisecond;
	668	* Delay before clearing the error, second;
	669	* Check voltage – a flag to enable checking of voltage before and after contactors to detect the fact of contactor sticking;
	670	* Abnormal voltage difference – the difference of voltages before and after contactors at which BMS indicates and error;
	671	* Lock – a flag to block the error until the device is restarted.
	672
	673	If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
	674
	675	* 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”.
	676
	677	(% class="box warningmessage" %)
	678	(((
	679	If there is the “Stuck contactor” error, the “Critical error” is generated and all relays open.
	680	)))
	681
	682	=== Contactor feedback ===
	683
	684	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.
	685
	686	To change the contactor feedback check parameters, select the "Protections → Contactor feedback" section:
	687
	688	[[image:1733328487096-144.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="109" width="800"]]
	689
	690	In this section:
	691
	692	* Enable – a flag to enable the protection;
	693	* Delay before setting the error, millisecond;
	694	* Delay before clearing the error, second;
	695	* Lock – a flag to block the error until the device is restarted.
	696
	697	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	698
	699	* a command to the charging, precharging, discharging, charging/discharging or main contactor does not match its feedback value.
	700
	701	(% class="box warningmessage" %)
	702	(((
	703	If there is the “Contactor feedback” error, the “Critical error” is generated and all relays open.
	704	)))
	705
5.1	706	=== Insulation ===
2.1	707
	708	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.
	709
	710	To change the insulation monitoring parameters, select the "Protections → Insulation" section:
	711
	712	[[image:1733328487098-963.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="121" width="800"]]
	713
	714	In this section:
	715
	716	* Enable – a flag to enable the protection;
	717	* Checking algorithm – isolation checking mode:
	718	** Always on – check is always performed;
	719	** On charging – check is performed only if “Charger connected” or “Charge request” is set;
	720	** Except charging - check is performed only if “Charger connected” and “Charge request” are cleared;
	721	* Delay before setting the error, second;
	722	* Delay before clearing the error, second;
	723	* Lock – a flag to block the error until the device is restarted.
	724
	725	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.
	726
	727	(% class="box warningmessage" %)
	728	(((
	729	If there is the “Insulation fault”, the “Critical error” is generated and all relays open.
	730	)))
	731
	732	=== HVIL ===
	733
	734	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.
	735
	736	To change the HVIL measurement parameters, select the "Protections → HVIL" section:
	737
13.2	738	[[image:1735224839441-185.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
2.1	739
	740	In this section:
	741
	742	* Enable – a flag to enable the protection;
13.2	743	* Source is OFF: Lower current limit, A;
	744	* Source is OFF: Upper current limit, A;
	745	* Source is ON: Lower current limit, A;
	746	* Source is ON: Upper current limit, A;
2.1	747	* Lock – a flag to block the error until the device is restarted.
	748
14.2	749	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	750
	751	(% class="box warningmessage" %)
	752	(((
	753	If there is the “HVIL error”, the “Critical error” is generated and all relays open.
	754	)))
	755
	756	=== Critical error ===
	757
	758	To change the critical error parameters, select the "Protections → Critical error" section:
	759
	760	[[image:1733328487100-898.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
	761
	762	In this section:
	763
	764	* Enable – a flag to enable the protection;
	765	* Delay before setting the error, millisecond;
	766	* Delay before clearing the error, second;
	767	* Lock – a flag to block the error until the device is restarted.
	768
	769	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	770
	771	* “Battery cover error”;
	772	* “Water”;
	773	* “Logic offline”;
	774	* “Cell count error”;
	775	* “ADC error”;
	776	* “Current sensor error”;
	777	* “Shunt offline”;
	778	* “Shunt error”;
	779	* “WDT reset”
	780	* “No temp. sensors”;
	781	* “Temperature sensor shorted”;
	782	* “Stuck contactor”;
	783	* “CH contactor feedback error”;
	784	* “DCH contactor feedback error”;
	785	* “Insulation fault”;
	786	* “PCH contactor feedback error”;
	787	* “CH/DCH contactor feedback error”;
	788	* “Main contactor feedback error”;
	789	* “High voltage fault”;
	790	* “Power switch error”;
	791	* “HVIL error”l
	792	* “Power fault”.
	793
	794	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	795
	796	(% class="box infomessage" %)
	797	(((
	798	If there is the “Critical error”, all contactors open.
	799	)))
	800
6.1	801	=== General error ===
2.1	802
	803	To change the general error parameters, select the "Protections → Critical error" section:
	804
14.2	805	[[image:1735224942262-497.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
2.1	806
	807	In this section:
	808
	809	* Enable – a flag to enable the protection;
	810	* Delay before setting the error, millisecond;
	811	* Delay before clearing the error, second;
	812	* Lock – a flag to block the error until the device is restarted;
15.1	813	* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
2.1	814
	815	The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
	816
	817	The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
	818
	819	(% class="box infomessage" %)
	820	(((
	821	The state of the “General error” can be output to a discrete output or a power switch.
	822	)))

Wiki source code of 3.4 Protections

Applications

Navigation

Table of Contents