Wiki source code of 2. Connection procedure

Version 21.3 by Admin on 2024/11/19 07:56

version	line-number	content
20.3	1	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	2
20.3	3	1. Connect the charging and discharging contactors to the P6-P9 headers.
	4	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.
	5	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.
	6	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.
	7
	8	= Headers description =
	9
1.2	10	The BMS Main 2.1 headers are shown in figure below.
	11
17.2	12	[[The BMS Main 2.1 headers>>image:1731517946345-632.png\|\|height="417" width="451"]]
1.2	13
20.3	14	(% class="wikigeneratedid" %)
21.1	15	Following chapters describes the BMS Main 2.1 headers pinout.
20.3	16
13.1	17	=== P1 – header for power supply ===
2.2	18
12.2	19	[[image:1731516593096-166.png\|\|data-xwiki-image-style-alignment="center"]]
2.2	20
21.2	21	(% style="width:339px" %)
	22	\|(% style="width:71px" %)Pin\|(% style="width:91px" %)Name\|(% style="width:174px" %)Description
	23	\|(% style="width:71px" %)1\|(% style="width:91px" %)GND\|(% style="width:174px" %)Ground
	24	\|(% style="width:71px" %)2\|(% style="width:91px" %)V+\|(% style="width:174px" %)Supply voltage 9-30V
4.2	25
13.1	26	=== P15 – header for BMS Logic ===
4.2	27
12.2	28	[[image:1731516577472-301.png\|\|data-xwiki-image-style-alignment="center"]]
4.2	29
21.2	30	(% style="width:524px" %)
	31	\|(% style="width:69px" %)Pin\|(% style="width:97px" %)Name\|(% style="width:355px" %)Description
	32	\|(% style="width:69px" %)1\|(% style="width:97px" %)RS485_A\|(% style="width:355px" %)RS-485 line A for communication with BMS Logic
	33	\|(% style="width:69px" %)2\|(% style="width:97px" %)RS485_B\|(% style="width:355px" %)RS-485 line B for communication with BMS Logic
	34	\|(% style="width:69px" %)3\|(% style="width:97px" %)+5V\|(% style="width:355px" %)Supply voltage for BMS Logic
	35	\|(% style="width:69px" %)4\|(% style="width:97px" %)GND\|(% style="width:355px" %)Ground
5.2	36
13.1	37	=== P12 – header for current sensor ===
5.2	38
12.2	39	[[image:1731516685999-633.png\|\|data-xwiki-image-style-alignment="center"]]
5.3	40
21.2	41	(% style="width:531px" %)
	42	\|(% style="width:75px" %)Pin\|(% style="width:93px" %)Name\|(% style="width:360px" %)Description
	43	\|(% style="width:75px" %)1\|(% style="width:93px" %)+5V\|(% style="width:360px" %)Supply voltage for the current sensor 5V, max 50 mA
	44	\|(% style="width:75px" %)2\|(% style="width:93px" %)GND\|(% style="width:360px" %)Ground
	45	\|(% style="width:75px" %)3\|(% style="width:93px" %)Vcs\|(% style="width:360px" %)ADC input (current sensor output)
	46	\|(% style="width:75px" %)4\|(% style="width:93px" %)Vref\|(% style="width:360px" %)ADC input (current sensor reference signal)
5.3	47
13.1	48	=== P13 – header for humidity sensor ===
5.3	49
6.2	50	[[image:1731516942455-641.png\|\|data-xwiki-image-style-alignment="center"]]
	51
21.3	52	(% style="width:531px" %)
	53	\|(% style="width:77px" %)Pin\|(% style="width:92px" %)Name\|(% style="width:359px" %)Description
	54	\|(% style="width:77px" %)1\|(% style="width:92px" %)+5V\|(% style="width:359px" %)Supply voltage 5 V, max 50 mA
	55	\|(% style="width:77px" %)2\|(% style="width:92px" %)GND\|(% style="width:359px" %)Ground
	56	\|(% style="width:77px" %)3\|(% style="width:92px" %)Vhs\|(% style="width:359px" %)ADC input (humidity sensor output)
	57	\|(% style="width:77px" %)4\|(% style="width:92px" %)Vts\|(% style="width:359px" %)ADC input (temperature sensor output)
6.2	58
13.1	59	=== P8 – header of relay 1 ===
6.2	60
12.2	61	[[image:1731517023208-641.png\|\|data-xwiki-image-style-alignment="center"]]
6.2	62
	63	By default, relay 1 is used to control the discharging contactor.
	64
21.3	65	(% style="width:527px" %)
	66	\|(% style="width:82px" %)Pin\|(% style="width:91px" %)Name\|(% style="width:351px" %)Description
	67	\|(% style="width:82px" %)1\|(% style="width:91px" %)V+\|(% style="width:351px" %)Switching voltage (up to 55V, max 2A)
	68	\|(% style="width:82px" %)2\|(% style="width:91px" %)NO\|(% style="width:351px" %)Normally open contact
6.2	69
13.1	70	=== P9 – header of relay 2 ===
11.2	71
12.2	72	[[image:1731517025702-799.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	73
	74	By default, relay 2 is used to output the “Allow charging” signal.
	75
21.3	76	(% style="width:524px" %)
	77	\|(% style="width:89px" %)Pin\|(% style="width:91px" %)Name\|(% style="width:341px" %)Description
	78	\|(% style="width:89px" %)1\|(% style="width:91px" %)V+\|(% style="width:341px" %)Switching voltage (up to 55V, max 2A)
	79	\|(% style="width:89px" %)2\|(% style="width:91px" %)NO\|(% style="width:341px" %)Normally open contact
6.2	80
13.1	81	=== P6 – header of relay 3 ===
6.2	82
12.2	83	[[image:1731517025702-799.png\|\|data-xwiki-image-style-alignment="center"]]
6.2	84
11.2	85	By default, relay 3 is used to control the charging contactor.
6.2	86
21.3	87	(% style="width:524px" %)
	88	\|(% style="width:101px" %)Pin\|(% style="width:88px" %)Name\|(% style="width:332px" %)Description
	89	\|(% style="width:101px" %)1\|(% style="width:88px" %)V+\|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
	90	\|(% style="width:101px" %)2\|(% style="width:88px" %)NO\|(% style="width:332px" %)Normally open contact
6.2	91
13.1	92	=== P7 – header of relay 4 ===
6.2	93
12.2	94	[[image:1731517025702-799.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	95
	96	By default, relay 4 is used to control the heater.
	97
21.3	98	(% style="width:530px" %)
	99	\|(% style="width:102px" %)Pin\|(% style="width:93px" %)Name\|(% style="width:332px" %)Description
	100	\|(% style="width:102px" %)1\|(% style="width:93px" %)V+\|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
	101	\|(% style="width:102px" %)2\|(% style="width:93px" %)NO\|(% style="width:332px" %)Normally open contact
6.2	102
13.1	103	=== P14 – header for CAN and RS-485 interfaces ===
6.2	104
12.2	105	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center"]]
6.2	106
21.3	107	(% style="width:641px" %)
	108	\|(% style="width:107px" %)Pin\|(% style="width:127px" %)Name\|(% style="width:404px" %)Description
	109	\|(% style="width:107px" %)1\|(% style="width:127px" %)EXT_RS485_A\|(% style="width:404px" %)RS-485 line A for communication with external equipment
	110	\|(% style="width:107px" %)2\|(% style="width:127px" %)CAN_H\|(% style="width:404px" %)CAN H line for communication with external equipment
	111	\|(% style="width:107px" %)3\|(% style="width:127px" %)+5V_CAN\|(% style="width:404px" %)Supply voltage 5V for external devices, max 200 mA
	112	\|(% style="width:107px" %)4\|(% style="width:127px" %)EXT_RS485_B\|(% style="width:404px" %)RS-485 line B for communication with external equipment
	113	\|(% style="width:107px" %)5\|(% style="width:127px" %)CAN_L\|(% style="width:404px" %)CAN L line for communication with external equipment
	114	\|(% style="width:107px" %)6\|(% style="width:127px" %)GND_CAN\|(% style="width:404px" %)Ground
11.2	115
13.1	116	=== P21 – CAN termination resistor jumper ===
11.2	117
12.2	118	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	119
	120	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	121
19.1	122	\|Pin\|Name\|Description
	123	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	124	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	125
13.1	126	=== P22 - RS-485 termination resistor jumper ===
11.2	127
12.2	128	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	129
	130	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	131
21.3	132	\|Pin\|(% style="width:108px" %)Name\|(% style="width:1296px" %)Description
	133	\|1-2\|(% style="width:108px" %)120 Ohm\|(% style="width:1296px" %)Terminating resistor 120 Ohm is connected
	134	\|2-3\|(% style="width:108px" %)-\|(% style="width:1296px" %)Terminating resistor 120 Ohm is not connected
11.2	135
13.1	136	=== P11 – header for discrete inputs/outputs ===
11.2	137
12.2	138	[[image:1731517206246-979.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	139
19.1	140	\|Pin\|Name\|Description
	141	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	142	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	143	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	144	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	145	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	146	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	147	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	148	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	149	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	150	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	151	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	152	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	153	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	154	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	155	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	156	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	157
13.1	158	= Indicators =
11.2	159
13.1	160	=== DS1 – power indicator ===
	161
19.1	162	\|State\|Description
	163	\|Lights red\|The device is powered
	164	\|Off\|The device is not powered
11.2	165
13.1	166	=== DS2 – operation indicator ===
11.2	167
19.1	168	\|State\|Description
	169	\|Blinking green\|The BMS firmware is running
	170	\|Off\|The BMS firmware is not running
11.2	171
13.1	172	=== DS3 – communication indicator ===
11.2	173
19.1	174	\|State\|Description
	175	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	176	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	177
13.1	178	=== DS4 – error indicator ===
11.2	179
19.1	180	\|State\|Description
	181	\|Blinking red\|Errors in communication with BMS Logic
11.2	182
13.1	183	=== DS7 – relay 1 indicator ===
11.2	184
19.1	185	\|State\|Description
	186	\|Lights green\|Relay #1 is closed
	187	\|Off\|Relay #1 is opened
11.2	188
13.1	189	=== DS8 – relay 2 indicator ===
11.2	190
	191
20.1	192	\|State\|Description
	193	\|Lights green\|Relay #2 is closed
	194	\|Off\|Relay #2 is opened
19.1	195
13.1	196	=== DS5 – relay 3 indicator ===
11.2	197
19.1	198	\|State\|Description
	199	\|Lights green\|Relay #3 is closed
	200	\|Off\|Relay #3 is opened
11.2	201
13.1	202	=== DS6 – relay 4 indicator ===
11.2	203
19.1	204	\|State\|Description
	205	\|Lights green\|Relay #4 is closed
	206	\|Off\|Relay #4 is opened
11.2	207
5.3	208

Wiki source code of 2. Connection procedure

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