Wiki source code of 2. Installation and connection

Version 20.2 by Admin on 2025/03/18 12:26

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12.1	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;" %)
16.1	2	= nstallation and connection =
1.1	3
20.2	4	== Safety rules ==
	5
	6
	7	It is not recommended to use the system in batteries formed by several series of cells connected in parallel. To increase capacity, it is recommended to connect several cells in parallel groups, and then connect the groups in series.
	8
	9	(% class="box warningmessage" %)
	10	(((
	11	The BMS can be connected to batteries with life-threatening and health-hazardous voltage levels. When working with high-voltage batteries, observe electrical safety regulations, use safety glasses, protective clothing, insulated tools and appliances. To prevent the damage of device avoid electrostatic discharges while working with the battery.
	12	)))
	13
12.1	14	== Installation procedure ==
	15
1.1	16	The mounting area of the BMS Logic 12 must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Logic 12 is recommended to be placed close to the cells it controls, but away from high current circuits to reduce interference to measuring circuits and increase overall reliability of installation.
	17
	18	The installation site must provide convenient access for subsequent connection to the device’s headers.
	19
	20	The BMS Logic 12 has a heat sink to dissipate the heat generated during the balancing of the cells. When used in enclosed enclosures, heat must be removed from the sink, otherwise it may damage the device.
	21
	22	Overall and mounting dimensions of the BMS Logic 12 are shown below.
	23
18.1	24	[[image:1736773655076-566.png\|\|data-xwiki-image-style-alignment="center" height="534" width="600"]]
1.1	25
	26	(% style="width:477px" %)
	27	\|Parameter\|(% style="width:160px" %)Value
	28	\|Overall dimensions (length × width × height), mm\|(% style="width:160px" %)139 × 126 × 16
	29	\|Mounting dimensions (length × width), mm\|(% style="width:160px" %)123 × 118
	30	\|Mounting holes\|(% style="width:160px" %)M4
	31
12.1	32	== Headers ==
1.1	33
2.1	34	The BMS Logic 12 is designed to measure temperature and voltage of 12 battery cells.
	35
16.1	36	[[image:1736770542979-717.png\|\|data-xwiki-image-style-alignment="center" height="356" width="450"]]
1.1	37
10.1	38	(% class="box warningmessage" %)
	39	(((
	40	Attention!
11.1	41	All headers are shown from the device side!
10.1	42	)))
	43
12.1	44	=== X1 – header for cells ===
2.1	45
19.1	46	Receptacle Housing: Molex 430251400. Terminals: Molex 43030
	47
3.1	48	[[image:1733143152741-474.jpeg\|\|data-xwiki-image-style-alignment="center" height="81" width="210"]]
2.1	49
	50	\|Pin\|Name\|Description
	51	\|1\|V-\|Minus of the cell stack
	52	\|2\|C2\|Cell #2
	53	\|3\|C4\|Cell #4
	54	\|4\|C6\|Cell #6
	55	\|5\|C8\|Cell #8
	56	\|6\|C10\|Cell #10
	57	\|7\|C12\|Cell #12 (maximum potential of the cell stack)
	58	\|8\|-\|-
	59	\|9\|C1\|Cell #1 (minimum potential with respect to V-)
	60	\|10\|C3\|Cell #3
	61	\|11\|C5\|Cell #5
	62	\|12\|C7\|Cell #7
	63	\|13\|C9\|Cell #9
	64	\|14\|C11\|Cell #11
	65
12.1	66	=== X2 – header for temperature sensors ===
2.1	67
20.1	68	Receptacle Housing: Molex 430252400. Terminals: Molex 43030
	69
2.1	70	[[image:1733143152745-708.jpeg\|\|data-xwiki-image-style-alignment="center" height="92" width="368"]]
	71
	72	\|Pin\|Name\|Description
	73	\|1\|TEMPG12\|Ground of the thermistor #12
	74	\|2\|TEMPG11\|Ground of the thermistor #11
	75	\|3\|TEMPG10\|Ground of the thermistor #10
	76	\|4\|TEMPG9\|Ground of the thermistor #9
	77	\|5\|TEMPG8\|Ground of the thermistor #8
	78	\|6\|TEMPG7\|Ground of the thermistor #7
	79	\|7\|TEMPG6\|Ground of the thermistor #6
	80	\|8\|TEMPG5\|Ground of the thermistor #5
	81	\|9\|TEMPG4\|Ground of the thermistor #4
	82	\|10\|TEMPG3\|Ground of the thermistor #3
	83	\|11\|TEMPG2\|Ground of the thermistor #2
	84	\|12\|TEMPG1\|Ground of the thermistor #1
	85	\|13\|TEMP12\|Signal from the thermistor #12
	86	\|14\|TEMP11\|Signal from the thermistor #11
	87	\|15\|TEMP10\|Signal from the thermistor #10
	88	\|16\|TEMP9\|Signal from the thermistor #9
	89	\|17\|TEMP8\|Signal from the thermistor #8
	90	\|18\|TEMP7\|Signal from the thermistor #7
	91	\|19\|TEMP6\|Signal from the thermistor #6
	92	\|20\|TEMP5\|Signal from the thermistor #5
	93	\|21\|TEMP4\|Signal from the thermistor #4
	94	\|22\|TEMP3\|Signal from the thermistor #3
	95	\|23\|TEMP2\|Signal from the thermistor #2
	96	\|24\|TEMP1\|Signal from the thermistor #1
	97
12.1	98	=== X3, X4 – headers for communication with BMS Main ===
2.1	99
20.1	100	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	101
6.1	102	[[image:1733151077073-306.png\|\|data-xwiki-image-style-alignment="center" height="78" width="71"]]
	103
2.1	104	\|Pin\|Name\|Description
	105	\|1\|RS485_A\|RS-485 line A for communication with the BMS Main
	106	\|2\|RS485_B\|RS-485 line B for communication with the BMS Main
	107	\|3\|+5V\|Supply voltage 5V
	108	\|4\|GND\|Ground
	109
12.1	110	== (% style="color:inherit; font-family:inherit; font-size:max(20px, min(24px, 12.8889px + 0.925926vw))" %)Switches and indicators(%%) ==
2.1	111
12.1	112	=== SWD1 – address switch ===
2.1	113
	114	\|Switch number\|Description
	115	\|1\|The first (the lowest) bit of the address. Position ON - bit is 1
	116	\|2\|The second bit is the address. Position ON - bit is 1
	117	\|3\|The third bit of the address. Position ON - bit is 1
	118	\|4\|The fourth bit of the address. Position ON - bit is 1
	119	\|5\|The fifth (the highest) bit of the address. Position ON - bit is 1
	120
	121	(% class="box infomessage" %)
	122	(((
14.1	123	Note: There is no SWD1 switch in the recent revisions of the BMS Logic 12. The device address must be configured in the settings (see the section [[Configuration>>doc:Battery management systems.BMS Logic 12.3\. Configuration.WebHome]]).
2.1	124	)))
	125
12.1	126	=== SWD2 – RS-485 termination resistor switch ===
2.1	127
	128	To connect the termination resistor between the RS485_A and RS485_B lines, switch the SWD2 to the ON position.
	129
	130	(% class="box infomessage" %)
	131	(((
	132	Note: There is no SWD2 switch in the recent revisions of the BMS Logic 12. Connect a 120 Ohm termination resistor directly to the X4 connector between the lines RS485_A and RS485_B.
	133	)))
	134
12.1	135	=== DS1 – mode indicator ===
2.1	136
3.1	137	(% style="width:718px" %)
	138	\|State\|(% style="width:422px" %)Description
	139	\|Blinking\|(% style="width:422px" %)Connection between the BMS Main and the device is established
	140	\|Short flashing (~~50 milliseconds in a second)\|(% style="width:422px" %)The device is measuring voltage and temperature. No communication between the BMS Main and the device
	141	\|Long flashing (1 second in a 2 second period)\|(% style="width:422px" %)The device is in the bootloader mode
2.1	142
12.1	143	== Connection procedure ==
3.1	144
12.1	145	=== Connection to BMS Main ===
3.1	146
	147	To connect the BMS Main to BMS Logic 12 do the following steps:
	148
	149	1. Connect the BMS Main to the first BMS Logic 12 (P15 -> X3).
	150	1. Connect the BMS Logic 12 to each other (X4 -> X3).
	151	1. Switch SWD2 on the last BMS Logic 12 to the ON position or connect a 120 Ohm termination resistor directly to the X4 connector of the last BMS Logic 12.
	152
	153	(% class="box infomessage" %)
	154	(((
	155	Recommendations:
	156	~1. The total cable length (the sum of the lengths of all cables) between the BMS Main and the last BMS Logic 12 should not exceed 500 meters.
	157	2. Make all connections with the same cable.
	158	3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
	159	)))
	160
12.1	161	=== Connecting battery cells ===
3.1	162
	163	To connect the battery cells, follow Figure 16. Incorrect connection of the cells can damage the BMS Logic 12.
	164
	165	Begin the connection with the negative of the battery: the "V-" of the first BMS Logic 12 is connected to "B-", then the first cell (C1) of the battery is connected, then the second (C2), etc. The “V-“ of the next BMS Logic 12 is connected to the C12 of the previous BMS Logic 12. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the highest potential.
	166
4.1	167	[[image:1733145484804-250.jpeg\|\|data-xwiki-image-style-alignment="center" height="507" width="587"]]
3.1	168
	169
	170	(% class="box warningmessage" %)
	171	(((
	172	Attention!
	173	Connect the battery according to the diagram, otherwise the device may be damaged.
	174	)))
	175
12.1	176	=== Connecting thermistors ===
3.1	177
	178	Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink). For reliable operation, it is recommended to use all thermistors (a temperature sensor per cell).
8.1	179
9.1	180	[[image:1733231119798-210.jpeg\|\|data-xwiki-image-style-alignment="center" height="408" width="539"]]
8.1	181
9.1	182

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