Wiki source code of 2. Connection

Version 20.2 by Admin on 2024/11/13 17:33

version	line-number	content
1.2	1	= Headers =
	2
	3	The BMS Main 2.1 headers are shown in figure below.
	4
17.2	5	[[The BMS Main 2.1 headers>>image:1731517946345-632.png\|\|height="417" width="451"]]
1.2	6
13.1	7	=== P1 – header for power supply ===
2.2	8
12.2	9	[[image:1731516593096-166.png\|\|data-xwiki-image-style-alignment="center"]]
2.2	10
18.1	11	\|Pin\|Name\|Description
	12	\|1\|GND\|Ground
	13	\|2\|V+\|Supply voltage 9-30V
4.2	14
13.1	15	=== P15 – header for BMS Logic ===
4.2	16
12.2	17	[[image:1731516577472-301.png\|\|data-xwiki-image-style-alignment="center"]]
4.2	18
18.1	19	\|Pin\|Name\|Description
	20	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
	21	\|2\|RS485_B\|RS-485 line B for communication with BMS Logic
	22	\|3\|+5V\|Supply voltage for BMS Logic
	23	\|4\|GND\|Ground
5.2	24
13.1	25	=== P12 – header for current sensor ===
5.2	26
12.2	27	[[image:1731516685999-633.png\|\|data-xwiki-image-style-alignment="center"]]
5.3	28
18.1	29	\|Pin\|Name\|Description
	30	\|1\|+5V\|Supply voltage for the current sensor 5V, max 50 mA
	31	\|2\|GND\|Ground
	32	\|3\|Vcs\|ADC input (current sensor output)
	33	\|4\|Vref\|ADC input (current sensor reference signal)
5.3	34
13.1	35	=== P13 – header for humidity sensor ===
5.3	36
6.2	37	[[image:1731516942455-641.png\|\|data-xwiki-image-style-alignment="center"]]
	38
18.1	39	\|Pin\|Name\|Description
	40	\|1\|+5V\|Supply voltage 5 V, max 50 mA
	41	\|2\|GND\|Ground
	42	\|3\|Vhs\|ADC input (humidity sensor output)
	43	\|4\|Vts\|ADC input (temperature sensor output)
6.2	44
13.1	45	=== P8 – header of relay 1 ===
6.2	46
12.2	47	[[image:1731517023208-641.png\|\|data-xwiki-image-style-alignment="center"]]
6.2	48
	49	By default, relay 1 is used to control the discharging contactor.
	50
18.1	51	\|Pin\|Name\|Description
	52	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	53	\|2\|NO\|Normally open contact
6.2	54
13.1	55	=== P9 – header of relay 2 ===
11.2	56
12.2	57	[[image:1731517025702-799.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	58
	59	By default, relay 2 is used to output the “Allow charging” signal.
	60
18.1	61	\|Pin\|Name\|Description
	62	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	63	\|2\|NO\|Normally open contact
6.2	64
13.1	65	=== P6 – header of relay 3 ===
6.2	66
12.2	67	[[image:1731517025702-799.png\|\|data-xwiki-image-style-alignment="center"]]
6.2	68
11.2	69	By default, relay 3 is used to control the charging contactor.
6.2	70
19.1	71	\|Pin\|Name\|Description
	72	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	73	\|2\|NO\|Normally open contact
6.2	74
13.1	75	=== P7 – header of relay 4 ===
6.2	76
12.2	77	[[image:1731517025702-799.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	78
	79	By default, relay 4 is used to control the heater.
	80
19.1	81	Pin\|Name\|Description
	82	1\|V+\|Switching voltage (up to 55V, max 8A)
	83	2\|NO\|Normally open contact
6.2	84
13.1	85	=== P14 – header for CAN and RS-485 interfaces ===
6.2	86
12.2	87	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center"]]
6.2	88
19.1	89	\|Pin\|Name\|Description
	90	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	91	\|2\|CAN_H\|CAN H line for communication with external equipment
	92	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	93	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	94	\|5\|CAN_L\|CAN L line for communication with external equipment
	95	\|6\|GND_CAN\|Ground
11.2	96
13.1	97	=== P21 – CAN termination resistor jumper ===
11.2	98
12.2	99	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	100
	101	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	102
19.1	103	\|Pin\|Name\|Description
	104	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	105	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	106
13.1	107	=== P22 - RS-485 termination resistor jumper ===
11.2	108
12.2	109	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	110
	111	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	112
19.1	113	\|Pin\|Name\|Description
	114	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	115	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	116
13.1	117	=== P11 – header for discrete inputs/outputs ===
11.2	118
12.2	119	[[image:1731517206246-979.png\|\|data-xwiki-image-style-alignment="center"]]
11.2	120
19.1	121	\|Pin\|Name\|Description
	122	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	123	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	124	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	125	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	126	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	127	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	128	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	129	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	130	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	131	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	132	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	133	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	134	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	135	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	136	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	137	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	138
13.1	139	= Indicators =
11.2	140
13.1	141	=== DS1 – power indicator ===
	142
19.1	143	\|State\|Description
	144	\|Lights red\|The device is powered
	145	\|Off\|The device is not powered
11.2	146
13.1	147	=== DS2 – operation indicator ===
11.2	148
19.1	149	\|State\|Description
	150	\|Blinking green\|The BMS firmware is running
	151	\|Off\|The BMS firmware is not running
11.2	152
13.1	153	=== DS3 – communication indicator ===
11.2	154
19.1	155	\|State\|Description
	156	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	157	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	158
13.1	159	=== DS4 – error indicator ===
11.2	160
19.1	161	\|State\|Description
	162	\|Blinking red\|Errors in communication with BMS Logic
11.2	163
13.1	164	=== DS7 – relay 1 indicator ===
11.2	165
19.1	166	\|State\|Description
	167	\|Lights green\|Relay #1 is closed
	168	\|Off\|Relay #1 is opened
11.2	169
13.1	170	=== DS8 – relay 2 indicator ===
11.2	171
	172
20.1	173	\|State\|Description
	174	\|Lights green\|Relay #2 is closed
	175	\|Off\|Relay #2 is opened
19.1	176
13.1	177	=== DS5 – relay 3 indicator ===
11.2	178
19.1	179	\|State\|Description
	180	\|Lights green\|Relay #3 is closed
	181	\|Off\|Relay #3 is opened
11.2	182
13.1	183	=== DS6 – relay 4 indicator ===
11.2	184
19.1	185	\|State\|Description
	186	\|Lights green\|Relay #4 is closed
	187	\|Off\|Relay #4 is opened
11.2	188
5.3	189

Wiki source code of 2. Connection

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