Wiki source code of 2. Installation and connection

Version 58.2 by Admin on 2025/03/10 15:14

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
58.2	95	Cont
	96
49.1	97	=== P9 – header of relay 2 ===
11.2	98
55.1	99	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	100
47.1	101	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	102
	103	By default, relay 2 is used to output the “Allow charging” signal.
	104
46.1	105	\|Pin\|Name\|Description
56.2	106	\|1\|V+\|Switching voltage (up to 55V, max 3A)
46.1	107	\|2\|NO\|Normally open contact
6.2	108
49.1	109	=== P6 – header of relay 3 ===
6.2	110
55.1	111	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	112
47.1	113	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	114
11.2	115	By default, relay 3 is used to control the charging contactor.
6.2	116
46.1	117	\|Pin\|Name\|Description
56.2	118	\|1\|V+\|Switching voltage up to 55V,
	119	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	120	\|2\|NO\|Normally open contact
6.2	121
49.1	122	=== P7 – header of relay 4 ===
6.2	123
55.1	124	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	125
47.1	126	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	127
	128	By default, relay 4 is used to control the heater.
	129
46.1	130	\|Pin\|Name\|Description
56.2	131	\|1\|V+\|Switching voltage up to 55V,
	132	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	133	\|2\|NO\|Normally open contact
6.2	134
49.1	135	=== P14 – header for CAN and RS-485 interfaces ===
6.2	136
55.1	137	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	138
47.1	139	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	140
21.3	141	(% style="width:641px" %)
46.1	142	\|Pin\|Name\|Description
	143	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	144	\|2\|CAN_H\|CAN H line for communication with external equipment
	145	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	146	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	147	\|5\|CAN_L\|CAN L line for communication with external equipment
	148	\|6\|GND_CAN\|Ground
11.2	149
49.1	150	=== P21 – CAN termination resistor jumper ===
11.2	151
47.1	152	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	153
	154	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	155
46.1	156	\|Pin\|Name\|Description
	157	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	158	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	159
49.1	160	=== P22 - RS-485 termination resistor jumper ===
11.2	161
47.1	162	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	163
	164	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	165
46.1	166	\|Pin\|Name\|Description
	167	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	168	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	169
49.1	170	=== P11 – header for discrete inputs/outputs ===
11.2	171
55.1	172	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	173
47.1	174	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	175
46.1	176	\|Pin\|Name\|Description
	177	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	178	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	179	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	180	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	181	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	182	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	183	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	184	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	185	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	186	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	187	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	188	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	189	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	190	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	191	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	192	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	193
49.1	194	== Indicators ==
11.2	195
49.1	196	=== DS1 – power indicator ===
13.1	197
46.1	198	\|State\|Description
	199	\|Lights red\|The device is powered
	200	\|Off\|The device is not powered
11.2	201
49.1	202	=== DS2 – operation indicator ===
11.2	203
46.1	204	\|State\|Description
	205	\|Blinking green\|The BMS firmware is running
	206	\|Off\|The BMS firmware is not running
11.2	207
49.1	208	=== DS3 – communication indicator ===
11.2	209
46.1	210	\|State\|Description
	211	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	212	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	213
49.1	214	=== DS4 – error indicator ===
11.2	215
	216
46.1	217	\|(State\|Description
	218	\|(Blinking red\|Errors in communication with BMS Logic
	219
49.1	220	=== DS7 – relay 1 indicator ===
11.2	221
46.1	222	\|State\|Description
	223	\|Lights green\|Relay #1 is closed
	224	\|Off\|Relay #1 is opened
11.2	225
49.1	226	=== DS8 – relay 2 indicator ===
11.2	227
46.1	228	\|State\|Description
	229	\|Lights green\|Relay #2 is closed
	230	\|Off\|Relay #2 is opened
19.1	231
49.1	232	=== DS5 – relay 3 indicator ===
11.2	233
46.1	234	\|State\|Description
	235	\|Lights green\|Relay #3 is closed
	236	\|Off\|Relay #3 is opened
11.2	237
49.1	238	=== DS6 – relay 4 indicator ===
11.2	239
46.1	240	\|State\|Description
	241	\|Lights green\|Relay #4 is closed
	242	\|Off\|Relay #4 is opened
11.2	243
5.3	244

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