Wiki source code of 2. Installation and connection

Version 56.1 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
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
	92	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	93	\|2\|NO\|Normally open contact
6.2	94
49.1	95	=== P9 – header of relay 2 ===
11.2	96
55.1	97	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	98
47.1	99	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	100
	101	By default, relay 2 is used to output the “Allow charging” signal.
	102
46.1	103	\|Pin\|Name\|Description
	104	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	105	\|2\|NO\|Normally open contact
6.2	106
49.1	107	=== P6 – header of relay 3 ===
6.2	108
55.1	109	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	110
47.1	111	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	112
11.2	113	By default, relay 3 is used to control the charging contactor.
6.2	114
46.1	115	\|Pin\|Name\|Description
	116	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	117	\|2\|NO\|Normally open contact
6.2	118
49.1	119	=== P7 – header of relay 4 ===
6.2	120
55.1	121	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	122
47.1	123	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	124
	125	By default, relay 4 is used to control the heater.
	126
46.1	127	\|Pin\|Name\|Description
	128	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	129	\|2\|NO\|Normally open contact
6.2	130
49.1	131	=== P14 – header for CAN and RS-485 interfaces ===
6.2	132
55.1	133	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	134
47.1	135	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	136
21.3	137	(% style="width:641px" %)
46.1	138	\|Pin\|Name\|Description
	139	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	140	\|2\|CAN_H\|CAN H line for communication with external equipment
	141	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	142	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	143	\|5\|CAN_L\|CAN L line for communication with external equipment
	144	\|6\|GND_CAN\|Ground
11.2	145
49.1	146	=== P21 – CAN termination resistor jumper ===
11.2	147
47.1	148	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	149
	150	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	151
46.1	152	\|Pin\|Name\|Description
	153	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	154	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	155
49.1	156	=== P22 - RS-485 termination resistor jumper ===
11.2	157
47.1	158	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	159
	160	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	161
46.1	162	\|Pin\|Name\|Description
	163	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	164	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	165
49.1	166	=== P11 – header for discrete inputs/outputs ===
11.2	167
55.1	168	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	169
47.1	170	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	171
46.1	172	\|Pin\|Name\|Description
	173	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	174	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	175	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	176	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	177	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	178	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	179	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	180	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	181	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	182	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	183	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	184	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	185	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	186	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	187	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	188	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	189
49.1	190	== Indicators ==
11.2	191
49.1	192	=== DS1 – power indicator ===
13.1	193
46.1	194	\|State\|Description
	195	\|Lights red\|The device is powered
	196	\|Off\|The device is not powered
11.2	197
49.1	198	=== DS2 – operation indicator ===
11.2	199
46.1	200	\|State\|Description
	201	\|Blinking green\|The BMS firmware is running
	202	\|Off\|The BMS firmware is not running
11.2	203
49.1	204	=== DS3 – communication indicator ===
11.2	205
46.1	206	\|State\|Description
	207	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	208	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	209
49.1	210	=== DS4 – error indicator ===
11.2	211
	212
46.1	213	\|(State\|Description
	214	\|(Blinking red\|Errors in communication with BMS Logic
	215
49.1	216	=== DS7 – relay 1 indicator ===
11.2	217
46.1	218	\|State\|Description
	219	\|Lights green\|Relay #1 is closed
	220	\|Off\|Relay #1 is opened
11.2	221
49.1	222	=== DS8 – relay 2 indicator ===
11.2	223
46.1	224	\|State\|Description
	225	\|Lights green\|Relay #2 is closed
	226	\|Off\|Relay #2 is opened
19.1	227
49.1	228	=== DS5 – relay 3 indicator ===
11.2	229
46.1	230	\|State\|Description
	231	\|Lights green\|Relay #3 is closed
	232	\|Off\|Relay #3 is opened
11.2	233
49.1	234	=== DS6 – relay 4 indicator ===
11.2	235
46.1	236	\|State\|Description
	237	\|Lights green\|Relay #4 is closed
	238	\|Off\|Relay #4 is opened
11.2	239
5.3	240

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