Wiki source code of 2. Installation and connection

Version 55.1 by Admin on 2025/02/20 12:59

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
54.1	15	\|Headers P1, P6-P9 type \|(% style="width:178px" %)Molex series Mini-Fit
	16	\|Headers P11-P15 type \|(% style="width:178px" %)Molex series Micro-Fit
26.2	17
49.1	18	== Connection procedure ==
26.2	19
20.3	20	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	21
20.3	22	1. Connect the charging and discharging contactors to the P6-P9 headers.
	23	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.
	24	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.
	25	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.
	26
49.1	27	== Headers description ==
20.3	28
1.2	29	The BMS Main 2.1 headers are shown in figure below.
	30
44.1	31	[[image:1731516393377-928.jpeg\|\|alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
1.2	32
48.1	33	(% class="box warningmessage" %)
	34	(((
	35	Attention!
	36	All headers are shown from the device side!
	37	)))
20.3	38
49.1	39	=== P1 – header for power supply ===
2.2	40
55.1	41	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	42
47.1	43	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
2.2	44
46.1	45	\|Pin\|Name\|Description
	46	\|1\|GND\|Ground
	47	\|2\|V+\|Supply voltage 9-30V
4.2	48
49.1	49	=== P15 – header for BMS Logic ===
4.2	50
55.1	51	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	52
47.1	53	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
4.2	54
46.1	55	\|Pin\|Name\|Description
	56	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
	57	\|2\|RS485_B\|RS-485 line B for communication with BMS Logic
	58	\|3\|+5V\|Supply voltage for BMS Logic
	59	\|4\|GND\|Ground
44.1	60
49.1	61	=== P12 – header for current sensor ===
5.2	62
55.1	63	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	64
47.1	65	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
5.3	66
46.1	67	\|Pin\|Name\|Description
	68	\|1\|+5V\|Supply voltage for the current sensor 5V, max 50 mA
	69	\|2\|GND\|Ground
	70	\|3\|Vcs\|ADC input (current sensor output)
	71	\|4\|Vref\|ADC input (current sensor reference signal)
5.3	72
49.1	73	=== P13 – header for humidity sensor ===
5.3	74
55.1	75	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	76
47.1	77	[[image:1732198896526-660.png\|\|data-xwiki-image-style-alignment="center" height="70" width="64"]]
6.2	78
46.1	79	\|Pin\|Name\|Description
	80	\|1\|+5V\|Supply voltage 5 V, max 50 mA
	81	\|2\|GND\|Ground
	82	\|3\|Vhs\|ADC input (humidity sensor output)
	83	\|4\|Vts\|ADC input (temperature sensor output)
6.2	84
49.1	85	=== P8 – header of relay 1 ===
6.2	86
55.1	87	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	88
47.1	89	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	90
	91	By default, relay 1 is used to control the discharging contactor.
	92
46.1	93	\|Pin\|Name\|Description
	94	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	95	\|2\|NO\|Normally open contact
6.2	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
	106	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	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
	118	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	119	\|2\|NO\|Normally open contact
6.2	120
49.1	121	=== P7 – header of relay 4 ===
6.2	122
55.1	123	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	124
47.1	125	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	126
	127	By default, relay 4 is used to control the heater.
	128
46.1	129	\|Pin\|Name\|Description
	130	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	131	\|2\|NO\|Normally open contact
6.2	132
49.1	133	=== P14 – header for CAN and RS-485 interfaces ===
6.2	134
55.1	135	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	136
47.1	137	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	138
21.3	139	(% style="width:641px" %)
46.1	140	\|Pin\|Name\|Description
	141	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	142	\|2\|CAN_H\|CAN H line for communication with external equipment
	143	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	144	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	145	\|5\|CAN_L\|CAN L line for communication with external equipment
	146	\|6\|GND_CAN\|Ground
11.2	147
49.1	148	=== P21 – CAN termination resistor jumper ===
11.2	149
47.1	150	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	151
	152	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	153
46.1	154	\|Pin\|Name\|Description
	155	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	156	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	157
49.1	158	=== P22 - RS-485 termination resistor jumper ===
11.2	159
47.1	160	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	161
	162	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	163
46.1	164	\|Pin\|Name\|Description
	165	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	166	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	167
49.1	168	=== P11 – header for discrete inputs/outputs ===
11.2	169
55.1	170	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	171
47.1	172	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	173
46.1	174	\|Pin\|Name\|Description
	175	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	176	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	177	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	178	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	179	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	180	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	181	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	182	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	183	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	184	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	185	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	186	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	187	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	188	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	189	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	190	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	191
49.1	192	== Indicators ==
11.2	193
49.1	194	=== DS1 – power indicator ===
13.1	195
46.1	196	\|State\|Description
	197	\|Lights red\|The device is powered
	198	\|Off\|The device is not powered
11.2	199
49.1	200	=== DS2 – operation indicator ===
11.2	201
46.1	202	\|State\|Description
	203	\|Blinking green\|The BMS firmware is running
	204	\|Off\|The BMS firmware is not running
11.2	205
49.1	206	=== DS3 – communication indicator ===
11.2	207
46.1	208	\|State\|Description
	209	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	210	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	211
49.1	212	=== DS4 – error indicator ===
11.2	213
	214
46.1	215	\|(State\|Description
	216	\|(Blinking red\|Errors in communication with BMS Logic
	217
49.1	218	=== DS7 – relay 1 indicator ===
11.2	219
46.1	220	\|State\|Description
	221	\|Lights green\|Relay #1 is closed
	222	\|Off\|Relay #1 is opened
11.2	223
49.1	224	=== DS8 – relay 2 indicator ===
11.2	225
46.1	226	\|State\|Description
	227	\|Lights green\|Relay #2 is closed
	228	\|Off\|Relay #2 is opened
19.1	229
49.1	230	=== DS5 – relay 3 indicator ===
11.2	231
46.1	232	\|State\|Description
	233	\|Lights green\|Relay #3 is closed
	234	\|Off\|Relay #3 is opened
11.2	235
49.1	236	=== DS6 – relay 4 indicator ===
11.2	237
46.1	238	\|State\|Description
	239	\|Lights green\|Relay #4 is closed
	240	\|Off\|Relay #4 is opened
11.2	241
5.3	242

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