Wiki source code of 2. Installation and connection

Version 62.1 by Admin on 2025/03/10 15:20

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
61.1	111	Contactor connection example: see relay 1.
	112
49.1	113	=== P6 – header of relay 3 ===
6.2	114
55.1	115	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	116
47.1	117	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	118
11.2	119	By default, relay 3 is used to control the charging contactor.
6.2	120
46.1	121	\|Pin\|Name\|Description
56.2	122	\|1\|V+\|Switching voltage up to 55V,
	123	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	124	\|2\|NO\|Normally open contact
6.2	125
61.1	126	Contactor connection example: see relay 1.
	127
49.1	128	=== P7 – header of relay 4 ===
6.2	129
55.1	130	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	131
47.1	132	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	133
	134	By default, relay 4 is used to control the heater.
	135
46.1	136	\|Pin\|Name\|Description
56.2	137	\|1\|V+\|Switching voltage up to 55V,
	138	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	139	\|2\|NO\|Normally open contact
6.2	140
61.1	141	Contactor connection example: see relay 1.
	142
49.1	143	=== P14 – header for CAN and RS-485 interfaces ===
6.2	144
55.1	145	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	146
47.1	147	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	148
21.3	149	(% style="width:641px" %)
46.1	150	\|Pin\|Name\|Description
	151	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	152	\|2\|CAN_H\|CAN H line for communication with external equipment
	153	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	154	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	155	\|5\|CAN_L\|CAN L line for communication with external equipment
	156	\|6\|GND_CAN\|Ground
11.2	157
49.1	158	=== P21 – CAN termination resistor jumper ===
11.2	159
47.1	160	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	161
	162	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	163
46.1	164	\|Pin\|Name\|Description
	165	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	166	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	167
49.1	168	=== P22 - RS-485 termination resistor jumper ===
11.2	169
47.1	170	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	171
	172	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	173
46.1	174	\|Pin\|Name\|Description
	175	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	176	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	177
49.1	178	=== P11 – header for discrete inputs/outputs ===
11.2	179
55.1	180	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	181
47.1	182	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	183
46.1	184	\|Pin\|Name\|Description
	185	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	186	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	187	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	188	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	189	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	190	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	191	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	192	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	193	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	194	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	195	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	196	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	197	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	198	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	199	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	200	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	201
49.1	202	== Indicators ==
11.2	203
49.1	204	=== DS1 – power indicator ===
13.1	205
46.1	206	\|State\|Description
	207	\|Lights red\|The device is powered
	208	\|Off\|The device is not powered
11.2	209
49.1	210	=== DS2 – operation indicator ===
11.2	211
46.1	212	\|State\|Description
	213	\|Blinking green\|The BMS firmware is running
	214	\|Off\|The BMS firmware is not running
11.2	215
49.1	216	=== DS3 – communication indicator ===
11.2	217
46.1	218	\|State\|Description
	219	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	220	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	221
49.1	222	=== DS4 – error indicator ===
11.2	223
	224
46.1	225	\|(State\|Description
	226	\|(Blinking red\|Errors in communication with BMS Logic
	227
49.1	228	=== DS7 – relay 1 indicator ===
11.2	229
46.1	230	\|State\|Description
	231	\|Lights green\|Relay #1 is closed
	232	\|Off\|Relay #1 is opened
11.2	233
49.1	234	=== DS8 – relay 2 indicator ===
11.2	235
46.1	236	\|State\|Description
	237	\|Lights green\|Relay #2 is closed
	238	\|Off\|Relay #2 is opened
19.1	239
49.1	240	=== DS5 – relay 3 indicator ===
11.2	241
46.1	242	\|State\|Description
	243	\|Lights green\|Relay #3 is closed
	244	\|Off\|Relay #3 is opened
11.2	245
49.1	246	=== DS6 – relay 4 indicator ===
11.2	247
46.1	248	\|State\|Description
	249	\|Lights green\|Relay #4 is closed
	250	\|Off\|Relay #4 is opened
11.2	251
5.3	252

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