Wiki source code of 2. Installation and connection

Version 49.3 by Admin on 2025/02/06 11:26

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
	15	\|Connectors type\|(% style="width:178px" %)Molex MiniFit (P1, P6)
26.2	16
49.1	17	== Connection procedure ==
26.2	18
20.3	19	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	20
20.3	21	1. Connect the charging and discharging contactors to the P6-P9 headers.
	22	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.
	23	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.
	24	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.
	25
49.1	26	== Headers description ==
20.3	27
1.2	28	The BMS Main 2.1 headers are shown in figure below.
	29
44.1	30	[[image:1731516393377-928.jpeg\|\|alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
1.2	31
48.1	32	(% class="box warningmessage" %)
	33	(((
	34	Attention!
	35	All headers are shown from the device side!
	36	)))
20.3	37
49.1	38	=== P1 – header for power supply ===
2.2	39
47.1	40	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
2.2	41
46.1	42	\|Pin\|Name\|Description
	43	\|1\|GND\|Ground
	44	\|2\|V+\|Supply voltage 9-30V
4.2	45
49.1	46	=== P15 – header for BMS Logic ===
4.2	47
47.1	48	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
4.2	49
46.1	50	\|Pin\|Name\|Description
	51	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
	52	\|2\|RS485_B\|RS-485 line B for communication with BMS Logic
	53	\|3\|+5V\|Supply voltage for BMS Logic
	54	\|4\|GND\|Ground
44.1	55
49.1	56	=== P12 – header for current sensor ===
5.2	57
47.1	58	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
5.3	59
46.1	60	\|Pin\|Name\|Description
	61	\|1\|+5V\|Supply voltage for the current sensor 5V, max 50 mA
	62	\|2\|GND\|Ground
	63	\|3\|Vcs\|ADC input (current sensor output)
	64	\|4\|Vref\|ADC input (current sensor reference signal)
5.3	65
49.1	66	=== P13 – header for humidity sensor ===
5.3	67
47.1	68	[[image:1732198896526-660.png\|\|data-xwiki-image-style-alignment="center" height="70" width="64"]]
6.2	69
46.1	70	\|Pin\|Name\|Description
	71	\|1\|+5V\|Supply voltage 5 V, max 50 mA
	72	\|2\|GND\|Ground
	73	\|3\|Vhs\|ADC input (humidity sensor output)
	74	\|4\|Vts\|ADC input (temperature sensor output)
6.2	75
49.1	76	=== P8 – header of relay 1 ===
6.2	77
47.1	78	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	79
	80	By default, relay 1 is used to control the discharging contactor.
	81
46.1	82	\|Pin\|Name\|Description
	83	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	84	\|2\|NO\|Normally open contact
6.2	85
49.1	86	=== P9 – header of relay 2 ===
11.2	87
47.1	88	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	89
	90	By default, relay 2 is used to output the “Allow charging” signal.
	91
46.1	92	\|Pin\|Name\|Description
	93	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	94	\|2\|NO\|Normally open contact
6.2	95
49.1	96	=== P6 – header of relay 3 ===
6.2	97
47.1	98	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	99
11.2	100	By default, relay 3 is used to control the charging contactor.
6.2	101
46.1	102	\|Pin\|Name\|Description
	103	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	104	\|2\|NO\|Normally open contact
6.2	105
49.1	106	=== P7 – header of relay 4 ===
6.2	107
47.1	108	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	109
	110	By default, relay 4 is used to control the heater.
	111
46.1	112	\|Pin\|Name\|Description
	113	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	114	\|2\|NO\|Normally open contact
6.2	115
49.1	116	=== P14 – header for CAN and RS-485 interfaces ===
6.2	117
47.1	118	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	119
21.3	120	(% style="width:641px" %)
46.1	121	\|Pin\|Name\|Description
	122	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	123	\|2\|CAN_H\|CAN H line for communication with external equipment
	124	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	125	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	126	\|5\|CAN_L\|CAN L line for communication with external equipment
	127	\|6\|GND_CAN\|Ground
11.2	128
49.1	129	=== P21 – CAN termination resistor jumper ===
11.2	130
47.1	131	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	132
	133	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	134
46.1	135	\|Pin\|Name\|Description
	136	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	137	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	138
49.1	139	=== P22 - RS-485 termination resistor jumper ===
11.2	140
47.1	141	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	142
	143	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	144
46.1	145	\|Pin\|Name\|Description
	146	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	147	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	148
49.1	149	=== P11 – header for discrete inputs/outputs ===
11.2	150
47.1	151	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	152
46.1	153	\|Pin\|Name\|Description
	154	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	155	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	156	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	157	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	158	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	159	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	160	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	161	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	162	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	163	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	164	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	165	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	166	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	167	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	168	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	169	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	170
49.1	171	== Indicators ==
11.2	172
49.1	173	=== DS1 – power indicator ===
13.1	174
46.1	175	\|State\|Description
	176	\|Lights red\|The device is powered
	177	\|Off\|The device is not powered
11.2	178
49.1	179	=== DS2 – operation indicator ===
11.2	180
46.1	181	\|State\|Description
	182	\|Blinking green\|The BMS firmware is running
	183	\|Off\|The BMS firmware is not running
11.2	184
49.1	185	=== DS3 – communication indicator ===
11.2	186
46.1	187	\|State\|Description
	188	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	189	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	190
49.1	191	=== DS4 – error indicator ===
11.2	192
	193
46.1	194	\|(State\|Description
	195	\|(Blinking red\|Errors in communication with BMS Logic
	196
49.1	197	=== DS7 – relay 1 indicator ===
11.2	198
46.1	199	\|State\|Description
	200	\|Lights green\|Relay #1 is closed
	201	\|Off\|Relay #1 is opened
11.2	202
49.1	203	=== DS8 – relay 2 indicator ===
11.2	204
46.1	205	\|State\|Description
	206	\|Lights green\|Relay #2 is closed
	207	\|Off\|Relay #2 is opened
19.1	208
49.1	209	=== DS5 – relay 3 indicator ===
11.2	210
46.1	211	\|State\|Description
	212	\|Lights green\|Relay #3 is closed
	213	\|Off\|Relay #3 is opened
11.2	214
49.1	215	=== DS6 – relay 4 indicator ===
11.2	216
46.1	217	\|State\|Description
	218	\|Lights green\|Relay #4 is closed
	219	\|Off\|Relay #4 is opened
11.2	220
5.3	221

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