Wiki source code of 2. Installation and connection

Version 60.2 by Admin on 2025/03/10 15:18

version	line-number	content
49.1	1	(% data-numbered-headings-start="2" style="--numbered-headings-start: 1;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
	2	= Installation and connection =
25.4	3
49.1	4	== Installation procedure ==
	5
45.1	6	Overall and mounting dimensions of the BMS Main 2.1 are shown below.
26.2	7
44.1	8	[[image:1732198397369-222.png\|\|data-xwiki-image-style-alignment="center" height="393" width="556"]]
26.2	9
49.3	10	(% style="width:494px" %)
	11	\|Parameter\|(% style="width:178px" %)Value
	12	\|Overall dimensions (length × width × height), mm\|(% style="width:178px" %)120 × 120 × 32
	13	\|Mounting dimensions (length × width), mm\|(% style="width:178px" %)114 × 114
	14	\|Mounting holes\|(% style="width:178px" %)M3
26.2	15
49.1	16	== Connection procedure ==
26.2	17
20.3	18	The mounting area of the BMS Main 2.1 must be protected from mechanical particles (dust, dirt, large objects) and water. The installation site must provide convenient access for subsequent connection to the device’s headers.
1.2	19
20.3	20	1. Connect the charging and discharging contactors to the P6-P9 headers.
	21	1. Connect a current sensor to the P12 header according to its documentation. The positive current direction (indicated by an arrow on the sensor) corresponds to the battery charging. It is recommended to use a shielded cable to connect the current sensor, the shield should be grounded on the side of the current sensor. The cable should be positioned as far as possible from the high current circuits. If the current sensor has a reference voltage line, connect it to pin 4 of the P12 header.
	22	1. Connect the BMS Main 2.1 to the on-board CAN network. Observe the rules for connecting CAN devices. If the BMS Main 2.1 is the last device on a bus, close pins 1-2 on the P21 jumper, otherwise leave the jumper on pins 2-3.
	23	1. Connect a power supply to the P1 header. It is not recommended to power the BMS Main 2.1 from the battery only, since at a critical discharge of the battery, it is not possible to turn on the BMS and close the charging contactor.
	24
49.1	25	== Headers description ==
20.3	26
1.2	27	The BMS Main 2.1 headers are shown in figure below.
	28
44.1	29	[[image:1731516393377-928.jpeg\|\|alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
1.2	30
48.1	31	(% class="box warningmessage" %)
	32	(((
	33	Attention!
	34	All headers are shown from the device side!
	35	)))
20.3	36
49.1	37	=== P1 – header for power supply ===
2.2	38
55.1	39	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	40
47.1	41	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
2.2	42
46.1	43	\|Pin\|Name\|Description
	44	\|1\|GND\|Ground
	45	\|2\|V+\|Supply voltage 9-30V
4.2	46
49.1	47	=== P15 – header for BMS Logic ===
4.2	48
55.1	49	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	50
47.1	51	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
4.2	52
46.1	53	\|Pin\|Name\|Description
	54	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
	55	\|2\|RS485_B\|RS-485 line B for communication with BMS Logic
	56	\|3\|+5V\|Supply voltage for BMS Logic
	57	\|4\|GND\|Ground
44.1	58
49.1	59	=== P12 – header for current sensor ===
5.2	60
55.1	61	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	62
47.1	63	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
5.3	64
46.1	65	\|Pin\|Name\|Description
	66	\|1\|+5V\|Supply voltage for the current sensor 5V, max 50 mA
	67	\|2\|GND\|Ground
	68	\|3\|Vcs\|ADC input (current sensor output)
	69	\|4\|Vref\|ADC input (current sensor reference signal)
5.3	70
49.1	71	=== P13 – header for humidity sensor ===
5.3	72
55.1	73	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	74
47.1	75	[[image:1732198896526-660.png\|\|data-xwiki-image-style-alignment="center" height="70" width="64"]]
6.2	76
46.1	77	\|Pin\|Name\|Description
	78	\|1\|+5V\|Supply voltage 5 V, max 50 mA
	79	\|2\|GND\|Ground
	80	\|3\|Vhs\|ADC input (humidity sensor output)
	81	\|4\|Vts\|ADC input (temperature sensor output)
6.2	82
49.1	83	=== P8 – header of relay 1 ===
6.2	84
55.1	85	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	86
47.1	87	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	88
	89	By default, relay 1 is used to control the discharging contactor.
	90
46.1	91	\|Pin\|Name\|Description
56.2	92	\|1\|V+\|Switching voltage (up to 55V, max 3A)
46.1	93	\|2\|NO\|Normally open contact
6.2	94
60.2	95	Contactor connection example for all relays:
58.2	96
60.2	97	[[image:1741619814065-850.png\|\|height="189" width="252"]]
59.2	98
49.1	99	=== P9 – header of relay 2 ===
11.2	100
55.1	101	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	102
47.1	103	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	104
	105	By default, relay 2 is used to output the “Allow charging” signal.
	106
46.1	107	\|Pin\|Name\|Description
56.2	108	\|1\|V+\|Switching voltage (up to 55V, max 3A)
46.1	109	\|2\|NO\|Normally open contact
6.2	110
49.1	111	=== P6 – header of relay 3 ===
6.2	112
55.1	113	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	114
47.1	115	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	116
11.2	117	By default, relay 3 is used to control the charging contactor.
6.2	118
46.1	119	\|Pin\|Name\|Description
56.2	120	\|1\|V+\|Switching voltage up to 55V,
	121	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	122	\|2\|NO\|Normally open contact
6.2	123
49.1	124	=== P7 – header of relay 4 ===
6.2	125
55.1	126	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	127
47.1	128	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	129
	130	By default, relay 4 is used to control the heater.
	131
46.1	132	\|Pin\|Name\|Description
56.2	133	\|1\|V+\|Switching voltage up to 55V,
	134	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	135	\|2\|NO\|Normally open contact
6.2	136
49.1	137	=== P14 – header for CAN and RS-485 interfaces ===
6.2	138
55.1	139	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	140
47.1	141	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	142
21.3	143	(% style="width:641px" %)
46.1	144	\|Pin\|Name\|Description
	145	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	146	\|2\|CAN_H\|CAN H line for communication with external equipment
	147	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	148	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	149	\|5\|CAN_L\|CAN L line for communication with external equipment
	150	\|6\|GND_CAN\|Ground
11.2	151
49.1	152	=== P21 – CAN termination resistor jumper ===
11.2	153
47.1	154	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	155
	156	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	157
46.1	158	\|Pin\|Name\|Description
	159	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	160	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	161
49.1	162	=== P22 - RS-485 termination resistor jumper ===
11.2	163
47.1	164	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	165
	166	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	167
46.1	168	\|Pin\|Name\|Description
	169	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	170	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	171
49.1	172	=== P11 – header for discrete inputs/outputs ===
11.2	173
55.1	174	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	175
47.1	176	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	177
46.1	178	\|Pin\|Name\|Description
	179	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	180	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	181	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	182	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	183	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	184	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	185	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	186	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	187	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	188	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	189	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	190	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	191	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	192	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	193	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	194	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	195
49.1	196	== Indicators ==
11.2	197
49.1	198	=== DS1 – power indicator ===
13.1	199
46.1	200	\|State\|Description
	201	\|Lights red\|The device is powered
	202	\|Off\|The device is not powered
11.2	203
49.1	204	=== DS2 – operation indicator ===
11.2	205
46.1	206	\|State\|Description
	207	\|Blinking green\|The BMS firmware is running
	208	\|Off\|The BMS firmware is not running
11.2	209
49.1	210	=== DS3 – communication indicator ===
11.2	211
46.1	212	\|State\|Description
	213	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	214	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	215
49.1	216	=== DS4 – error indicator ===
11.2	217
	218
46.1	219	\|(State\|Description
	220	\|(Blinking red\|Errors in communication with BMS Logic
	221
49.1	222	=== DS7 – relay 1 indicator ===
11.2	223
46.1	224	\|State\|Description
	225	\|Lights green\|Relay #1 is closed
	226	\|Off\|Relay #1 is opened
11.2	227
49.1	228	=== DS8 – relay 2 indicator ===
11.2	229
46.1	230	\|State\|Description
	231	\|Lights green\|Relay #2 is closed
	232	\|Off\|Relay #2 is opened
19.1	233
49.1	234	=== DS5 – relay 3 indicator ===
11.2	235
46.1	236	\|State\|Description
	237	\|Lights green\|Relay #3 is closed
	238	\|Off\|Relay #3 is opened
11.2	239
49.1	240	=== DS6 – relay 4 indicator ===
11.2	241
46.1	242	\|State\|Description
	243	\|Lights green\|Relay #4 is closed
	244	\|Off\|Relay #4 is opened
11.2	245
5.3	246

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