Wiki source code of 2. Connection

Version 11.2 by Admin on 2024/11/13 17:00

version	line-number	content
1.2	1	= Headers =
	2
	3	The BMS Main 2.1 headers are shown in figure below.
	4
	5	[[The BMS Main 2.1 headers>>image:1731516393377-928.jpeg\|\|height="430" width="428"]]
	6
2.2	7	== P1 – header for power supply ==
	8
4.2	9	[[image:1731516593096-166.png\|\|data-xwiki-image-style-alignment="center" height="93" width="49"]]
2.2	10
	11	\|Pin\|Name\|Description
	12	\|1\|GND\|Ground
	13	\|2\|V+\|Supply voltage 9-30V
4.2	14
	15	== P15 – header for BMS Logic ==
	16
	17	[[image:1731516577472-301.png\|\|data-xwiki-image-style-alignment="center" height="90" width="83"]]
	18
5.2	19	\|Pin\|Name\|Description
	20	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
4.2	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
11.2	25	== P12 – header for current sensor ==
5.2	26
5.3	27	[[image:1731516685999-633.png\|\|data-xwiki-image-style-alignment="center" height="98" width="90"]]
	28
	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)
	34
6.2	35	== P13 – header for humidity sensor ==
5.3	36
6.2	37	[[image:1731516942455-641.png\|\|data-xwiki-image-style-alignment="center"]]
	38
	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)
	44
11.2	45	P8 – header of relay 1
6.2	46
11.2	47	[[image:1731517023208-641.png]]
6.2	48
	49	By default, relay 1 is used to control the discharging contactor.
	50
11.2	51	\|Pin\|Name\|Description
	52	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	53	\|2\|NO\|Normally open contact
6.2	54
11.2	55	P9 – header of relay 2
	56
	57	[[image:1731517025702-799.png]]
	58
	59	By default, relay 2 is used to output the “Allow charging” signal.
	60
6.2	61	\|Pin\|Name\|Description
	62	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	63	\|2\|NO\|Normally open contact
	64
11.2	65	P6 – header of relay 3
6.2	66
11.2	67	[[image:1731517025702-799.png]]
6.2	68
11.2	69	By default, relay 3 is used to control the charging contactor.
6.2	70
11.2	71	\|Pin\|Name\|Description
	72	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	73	\|2\|NO\|Normally open contact
6.2	74
11.2	75	P7 – header of relay 4
6.2	76
11.2	77	[[image:1731517025702-799.png]]
	78
	79	By default, relay 4 is used to control the heater.
	80
6.2	81	\|Pin\|Name\|Description
11.2	82	\|1\|V+\|Switching voltage (up to 55V, max 8A)
6.2	83	\|2\|NO\|Normally open contact
	84
11.2	85	P14 – header for CAN and RS-485 interfaces
6.2	86
11.2	87	[[image:1731517180930-597.png]]
6.2	88
11.2	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
	96
	97	P21 – CAN termination resistor jumper
	98
	99	[[image:1731517188900-976.png]]
	100
	101	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	102
	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
	106
	107	P22 - RS-485 termination resistor jumper
	108
	109	[[image:1731517195672-298.png]]
	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
	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
	116
	117	P11 – header for discrete inputs/outputs
	118
	119
	120	\|Pin\|Name\|Description
	121	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	122	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	123	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	124	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	125	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	126	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	127	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	128	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	129	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	130	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	131	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	132	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	133	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	134	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	135	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	136	\|1\|GND_OUT_1\|Discrete output #1 (ground)
	137
	138	1.
	139	11.
	140	111. DS1 – power indicator
	141
	142	\|State\|Description
	143	\|Lights red\|The device is powered
	144	\|Off\|The device is not powered
	145
	146	1.
	147	11.
	148	111. DS2 – operation indicator
	149
	150	\|State\|Description
	151	\|Blinking green\|The BMS firmware is running
	152	\|Off\|The BMS firmware is not running
	153
	154	1.
	155	11.
	156	111. DS3 – communication indicator
	157
	158	\|State\|Description
	159	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	160	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
	161
	162	1.
	163	11.
	164	111. DS4 – error indicator
	165
	166	\|State\|Description
	167	\|Blinking red\|Errors in communication with BMS Logic
	168
	169	1.
	170	11.
	171	111. DS7 – relay 1 indicator
	172
	173	\|State\|Description
	174	\|Lights green\|Relay #1 is closed
	175	\|Off\|Relay #1 is opened
	176
	177	1.
	178	11.
	179	111. DS8 – relay 2 indicator
	180
	181	\|State\|Description
	182	\|Lights green\|Relay #2 is closed
	183	\|Off\|Relay #2 is opened
	184
	185	1.
	186	11.
	187	111. DS5 – relay 3 indicator
	188
	189	\|State\|Description
	190	\|Lights green\|Relay #3 is closed
	191	\|Off\|Relay #3 is opened
	192
	193	1.
	194	11.
	195	111. DS6 – relay 4 indicator
	196
	197	\|State\|Description
	198	\|Lights green\|Relay #4 is closed
	199	\|Off\|Relay #4 is opened
	200
5.3	201

Wiki source code of 2. Connection

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