Wiki source code of 2. Installation and connection

Version 54.1 by Admin on 2025/02/06 11:38

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
54.1	15	\|Headers P1, P6-P9 type \|(% style="width:178px" %)Molex series Mini-Fit
	16	\|Headers P11-P15 type \|(% style="width:178px" %)Molex series Micro-Fit
26.2	17
49.1	18	== Connection procedure ==
26.2	19
20.3	20	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	21
20.3	22	1. Connect the charging and discharging contactors to the P6-P9 headers.
	23	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.
	24	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.
	25	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.
	26
49.1	27	== Headers description ==
20.3	28
1.2	29	The BMS Main 2.1 headers are shown in figure below.
	30
44.1	31	[[image:1731516393377-928.jpeg\|\|alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
1.2	32
48.1	33	(% class="box warningmessage" %)
	34	(((
	35	Attention!
	36	All headers are shown from the device side!
	37	)))
20.3	38
49.1	39	=== P1 – header for power supply ===
2.2	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
47.1	49	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
4.2	50
46.1	51	\|Pin\|Name\|Description
	52	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
	53	\|2\|RS485_B\|RS-485 line B for communication with BMS Logic
	54	\|3\|+5V\|Supply voltage for BMS Logic
	55	\|4\|GND\|Ground
44.1	56
49.1	57	=== P12 – header for current sensor ===
5.2	58
47.1	59	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
5.3	60
46.1	61	\|Pin\|Name\|Description
	62	\|1\|+5V\|Supply voltage for the current sensor 5V, max 50 mA
	63	\|2\|GND\|Ground
	64	\|3\|Vcs\|ADC input (current sensor output)
	65	\|4\|Vref\|ADC input (current sensor reference signal)
5.3	66
49.1	67	=== P13 – header for humidity sensor ===
5.3	68
47.1	69	[[image:1732198896526-660.png\|\|data-xwiki-image-style-alignment="center" height="70" width="64"]]
6.2	70
46.1	71	\|Pin\|Name\|Description
	72	\|1\|+5V\|Supply voltage 5 V, max 50 mA
	73	\|2\|GND\|Ground
	74	\|3\|Vhs\|ADC input (humidity sensor output)
	75	\|4\|Vts\|ADC input (temperature sensor output)
6.2	76
49.1	77	=== P8 – header of relay 1 ===
6.2	78
47.1	79	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	80
	81	By default, relay 1 is used to control the discharging contactor.
	82
46.1	83	\|Pin\|Name\|Description
	84	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	85	\|2\|NO\|Normally open contact
6.2	86
49.1	87	=== P9 – header of relay 2 ===
11.2	88
47.1	89	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	90
	91	By default, relay 2 is used to output the “Allow charging” signal.
	92
46.1	93	\|Pin\|Name\|Description
	94	\|1\|V+\|Switching voltage (up to 55V, max 2A)
	95	\|2\|NO\|Normally open contact
6.2	96
49.1	97	=== P6 – header of relay 3 ===
6.2	98
47.1	99	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	100
11.2	101	By default, relay 3 is used to control the charging contactor.
6.2	102
46.1	103	\|Pin\|Name\|Description
	104	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	105	\|2\|NO\|Normally open contact
6.2	106
49.1	107	=== P7 – header of relay 4 ===
6.2	108
47.1	109	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	110
	111	By default, relay 4 is used to control the heater.
	112
46.1	113	\|Pin\|Name\|Description
	114	\|1\|V+\|Switching voltage (up to 55V, max 8A)
	115	\|2\|NO\|Normally open contact
6.2	116
49.1	117	=== P14 – header for CAN and RS-485 interfaces ===
6.2	118
47.1	119	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	120
21.3	121	(% style="width:641px" %)
46.1	122	\|Pin\|Name\|Description
	123	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	124	\|2\|CAN_H\|CAN H line for communication with external equipment
	125	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	126	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	127	\|5\|CAN_L\|CAN L line for communication with external equipment
	128	\|6\|GND_CAN\|Ground
11.2	129
49.1	130	=== P21 – CAN termination resistor jumper ===
11.2	131
47.1	132	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	133
	134	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	135
46.1	136	\|Pin\|Name\|Description
	137	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	138	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	139
49.1	140	=== P22 - RS-485 termination resistor jumper ===
11.2	141
47.1	142	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	143
	144	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	145
46.1	146	\|Pin\|Name\|Description
	147	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	148	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	149
49.1	150	=== P11 – header for discrete inputs/outputs ===
11.2	151
47.1	152	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	153
46.1	154	\|Pin\|Name\|Description
	155	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	156	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	157	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	158	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	159	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	160	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	161	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	162	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	163	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	164	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	165	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	166	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	167	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	168	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	169	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	170	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	171
49.1	172	== Indicators ==
11.2	173
49.1	174	=== DS1 – power indicator ===
13.1	175
46.1	176	\|State\|Description
	177	\|Lights red\|The device is powered
	178	\|Off\|The device is not powered
11.2	179
49.1	180	=== DS2 – operation indicator ===
11.2	181
46.1	182	\|State\|Description
	183	\|Blinking green\|The BMS firmware is running
	184	\|Off\|The BMS firmware is not running
11.2	185
49.1	186	=== DS3 – communication indicator ===
11.2	187
46.1	188	\|State\|Description
	189	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	190	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	191
49.1	192	=== DS4 – error indicator ===
11.2	193
	194
46.1	195	\|(State\|Description
	196	\|(Blinking red\|Errors in communication with BMS Logic
	197
49.1	198	=== DS7 – relay 1 indicator ===
11.2	199
46.1	200	\|State\|Description
	201	\|Lights green\|Relay #1 is closed
	202	\|Off\|Relay #1 is opened
11.2	203
49.1	204	=== DS8 – relay 2 indicator ===
11.2	205
46.1	206	\|State\|Description
	207	\|Lights green\|Relay #2 is closed
	208	\|Off\|Relay #2 is opened
19.1	209
49.1	210	=== DS5 – relay 3 indicator ===
11.2	211
46.1	212	\|State\|Description
	213	\|Lights green\|Relay #3 is closed
	214	\|Off\|Relay #3 is opened
11.2	215
49.1	216	=== DS6 – relay 4 indicator ===
11.2	217
46.1	218	\|State\|Description
	219	\|Lights green\|Relay #4 is closed
	220	\|Off\|Relay #4 is opened
11.2	221
5.3	222

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