Wiki source code of 2. Installation and connection

Version 17.1 by Admin on 2025/02/20 12:51

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10.1	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 =
1.1	3
10.1	4	== Installation procedure ==
	5
1.1	6	The mounting area of the BMS Logic 18 must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Logic 18 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.
	7
	8	The installation site must provide convenient access for subsequent connection to the device’s headers.
	9
	10	The BMS Logic 18 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.
	11
	12	Overall and mounting dimensions of the BMS Logic 18 are shown below.
	13
15.1	14	[[image:1736771889450-259.png\|\|data-xwiki-image-style-alignment="center" height="405" width="600"]]
1.1	15
	16	\|Parameter\|Value
2.1	17	\|(((
1.1	18	Overall dimensions (length × width × height), mm
	19	)))\|214 × 140 × 16
	20	\|Mounting dimensions (length × width), mm\|198 × 132
	21	\|Mounting holes\|M4
	22
10.1	23	== Headers ==
1.1	24
	25	The BMS Logic 18 is designed to measure temperature and voltage of 18 battery cells.
	26
13.1	27	[[image:1736770801015-488.png\|\|data-xwiki-image-style-alignment="center" height="350" width="600"]]
1.1	28
8.1	29	(% class="box warningmessage" %)
	30	(((
	31	Attention!
9.1	32	All headers are shown from the device side!
8.1	33	)))
	34
10.1	35	=== X1 – header for cells ===
1.1	36
16.1	37	Receptacle Housing: Molex 430252000. Terminals: Molex 43030
	38
2.1	39	[[image:1733150257406-647.jpeg\|\|data-xwiki-image-style-alignment="center" height="73" width="256"]]
1.1	40
	41	\|Pin\|Name\|Description
	42	\|1\|V-\|Minus of the cell stack
	43	\|2\|C2\|Cell #2
	44	\|3\|C4\|Cell #4
	45	\|4\|C6\|Cell #6
	46	\|5\|C8\|Cell #8
	47	\|6\|C10\|Cell #10
	48	\|7\|C12\|Cell #12
	49	\|8\|C14\|Cell #14
	50	\|9\|C16\|Cell #16
	51	\|10\|C18\|Cell #18 (maximum potential of the cell stack)
	52	\|11\|-\|-
	53	\|12\|C1\|Cell #1 (minimum potential with respect to V-)
	54	\|13\|C3\|Cell #3
	55	\|14\|C5\|Cell #5
	56	\|15\|C7\|Cell #7
	57	\|16\|C9\|Cell #9
	58	\|17\|C11\|Cell #11
	59	\|18\|C13\|Cell #13
	60	\|19\|C15\|Cell #15
	61	\|20\|C17\|Cell #17
	62
10.1	63	=== X2 – header 1 for temperature sensors ===
1.1	64
16.1	65	Receptacle Housing: Molex 430251800. Terminals: Molex 43030
	66
2.1	67	[[image:1733150257408-172.jpeg\|\|data-xwiki-image-style-alignment="center" height="81" width="267"]]
1.1	68
	69	\|Pin\|Name\|Description
	70	\|1\|TEMPG9\|Ground of the thermistor #9
	71	\|2\|TEMPG8\|Ground of the thermistor #8
	72	\|3\|TEMPG7\|Ground of the thermistor #7
	73	\|4\|TEMPG6\|Ground of the thermistor #6
	74	\|5\|TEMPG5\|Ground of the thermistor #5
	75	\|6\|TEMPG4\|Ground of the thermistor #4
	76	\|7\|TEMPG3\|Ground of the thermistor #3
	77	\|8\|TEMPG2\|Ground of the thermistor #2
	78	\|9\|TEMPG1\|Ground of the thermistor #1
	79	\|10\|TEMP9\|Signal from the thermistor #9
	80	\|11\|TEMP8\|Signal from the thermistor #8
	81	\|12\|TEMP7\|Signal from the thermistor #7
	82	\|13\|TEMP6\|Signal from the thermistor #6
	83	\|14\|TEMP5\|Signal from the thermistor #5
	84	\|15\|TEMP4\|Signal from the thermistor #4
	85	\|16\|TEMP3\|Signal from the thermistor #3
	86	\|17\|TEMP2\|Signal from the thermistor #2
	87	\|18\|TEMP1\|Signal from the thermistor #1
	88
10.1	89	=== X3 – header 2 for temperature sensors ===
1.1	90
16.1	91	Receptacle Housing: Molex 430251800. Terminals: Molex 43030
	92
2.1	93	[[image:1733150257410-796.jpeg\|\|data-xwiki-image-style-alignment="center" height="81" width="268"]]
1.1	94
	95	\|Pin\|Name\|Description
	96	\|1\|TEMPG18\|Ground of the thermistor #18
	97	\|2\|TEMPG17\|Ground of the thermistor #17
	98	\|3\|TEMPG16\|Ground of the thermistor #16
	99	\|4\|TEMPG15\|Ground of the thermistor #15
	100	\|5\|TEMPG14\|Ground of the thermistor #14
	101	\|6\|TEMPG13\|Ground of the thermistor #13
	102	\|7\|TEMPG12\|Ground of the thermistor #12
	103	\|8\|TEMPG11\|Ground of the thermistor #11
	104	\|9\|TEMPG10\|Ground of the thermistor #10
	105	\|10\|TEMP18\|Signal from the thermistor #18
	106	\|11\|TEMP17\|Signal from the thermistor #17
	107	\|12\|TEMP16\|Signal from the thermistor #16
	108	\|13\|TEMP15\|Signal from the thermistor #15
	109	\|14\|TEMP14\|Signal from the thermistor #14
	110	\|15\|TEMP13\|Signal from the thermistor #13
	111	\|16\|TEMP12\|Signal from the thermistor #12
	112	\|17\|TEMP11\|Signal from the thermistor #11
	113	\|18\|TEMP10\|Signal from the thermistor #10
	114
10.1	115	=== X4, X5 – headers for communication with BMS Main ===
1.1	116
16.1	117	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	118
2.1	119	[[image:1733150513230-598.png\|\|data-xwiki-image-style-alignment="center" height="89" width="81"]]
1.1	120
	121	\|Pin\|Name\|Description
	122	\|1\|RS485_A\|RS-485 line A for communication with the BMS Main
	123	\|2\|RS485_B\|RS-485 line B for communication with the BMS Main
	124	\|3\|+5V\|Supply voltage 5V
	125	\|4\|GND\|Ground
	126
10.1	127	== Switches and Indicators ==
1.1	128
10.1	129	=== SWD1 – address switch ===
1.1	130
	131	\|Switch number\|Description
	132	\|1\|The first (the lowest) bit of the address. Position ON - bit is 1
	133	\|2\|The second bit is the address. Position ON - bit is 1
	134	\|3\|The third bit of the address. Position ON - bit is 1
	135	\|4\|The fourth bit of the address. Position ON - bit is 1
	136	\|5\|The fifth (the highest) bit of the address. Position ON - bit is 1
	137
2.1	138	(% class="box infomessage" %)
	139	(((
11.1	140	Note: There is no SWD1 switch in the recent revisions of the BMS Logic 18. The device address must be configured in the settings (see the section [[3. Configuration>>doc:Battery management systems.BMS Logic 18.3\. Configuration.WebHome]]).
2.1	141	)))
1.1	142
10.1	143	=== SWD2 – RS-485 termination resistor switch ===
1.1	144
	145	To connect the termination resistor between the RS485_A and RS485_B lines, switch SWD2 to the ON position.
	146
2.1	147	(% class="box infomessage" %)
	148	(((
	149	Note: There is no SWD2 switch in the recent revisions of the BMS Logic 18. Connect a 120 Ohm termination resistor directly to the X5 connector between the lines RS485_A and RS485_B.
	150	)))
1.1	151
10.1	152	=== DS1 – mode indicator ===
1.1	153
5.1	154	(% style="width:551px" %)
	155	\|(% style="width:188px" %)State\|(% style="width:362px" %)Description
	156	\|(% style="width:188px" %)Blinking\|(% style="width:362px" %)Connection between the BMS Main and the device is established
	157	\|(% style="width:188px" %)Short flashing (~~50 milliseconds in a second)\|(% style="width:362px" %)The device is measuring voltage and temperature. No communication between the BMS Main and the device
	158	\|(% style="width:188px" %)Long flashing (1 second in a 2 second period)\|(% style="width:362px" %)The device is in the bootloader mode
3.1	159
10.1	160	== Connection procedure ==
3.1	161
10.1	162	=== Connection to BMS Main ===
3.1	163
	164	To connect the BMS Main to BMS Logic 18 do the following steps:
	165
	166	1. Connect the BMS Main to the first BMS Logic 18 (P15 -> X4);
	167	1. Connect the BMS Logic 18 to each other (X5 -> X4);
	168	1. Switch SWD2 on the last BMS Logic 18 to the ON position or connect a 120 Ohm termination resistor directly to the X5 connector of the last BMS Logic 18.
	169
	170	(% class="box infomessage" %)
	171	(((
	172	Recommendations:
	173	~1. The total cable length (the sum of the lengths of all cables) between the BMS Main and the last BMS Logic 18 should not exceed 500 meters.
	174	2. Make all connections with the same cable.
	175	3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
	176	)))
	177
10.1	178	=== Connecting battery cells ===
3.1	179
	180	To connect the battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Logic 18.
	181
	182	Begin the connection with the negative of the battery: the "V-" of the first BMS Logic 18 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 18 is connected to the C18 of the previous BMS Logic 18. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the most potential.
	183
	184
	185	[[image:1733151263524-832.jpeg\|\|data-xwiki-image-style-alignment="center" height="492" width="612"]]
	186
	187	(% class="box warningmessage" %)
	188	(((
	189	Attention!
	190	Connect the battery according to the diagram, otherwise the device may be damaged!
	191	)))
	192
10.1	193	=== Connecting thermistors ===
3.1	194
	195	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).
6.1	196
	197	[[image:1733231170607-745.png\|\|data-xwiki-image-style-alignment="center" height="324" width="806"]]
7.1	198
	199

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