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Wiki source code of 2. Installation and connection

Version 10.1 by Admin on 2025/02/20 12:57
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2 = Installation and connection =
3
4 == ​​​​​Installation procedure ==
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6 The mounting area of the BMS Logic 2.0 must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Logic 2.0 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.
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8 The installation site must provide convenient access for subsequent connection to the device’s headers.
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10 The BMS Logic 2.0 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.
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12 Overall and mounting dimensions of the BMS Logic 2.0 are shown below.
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14 [[image:1733148558528-694.png||data-xwiki-image-style-alignment="center" height="310" width="504"]]
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16 |**Parameter**|**Value**
17 |(((
18 Overall dimensions (length × width × height), mm
19 )))|125 × 84 × 25
20 |Mounting dimensions (length × width), mm|115 × 50
21 |Mounting holes|M4
22
23 == Headers ==
24
25 The BMS Logic 2.0 is designed to measure battery parameters – temperature (for a stack of 12 cells there are 2 temperature sensors) and the voltages of 12 cells.
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27 [[image:1733148558522-665.png||data-xwiki-image-style-alignment="center" height="381" width="418"]]
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29 (% class="box warningmessage" %)
30 (((
31 **Attention!**
32 All headers are shown from the device side!
33 )))
34
35 === X1 – header for cells and temperature sensors ===
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37 (% class="wikigeneratedid" %)
38 Receptacle Housing: Molex 39012160. Terminals: Molex 5556
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47 (% class="wikigeneratedid" %)
48 [[image:1740053130023-265.png||data-xwiki-image-style-alignment="center"]]
49
50 |**Pin**|**Name**|**Description**
51 |**1**|**TEMP2**|Signal from the thermistor #2
52 |**2**|**TEMPC**|Ground of the thermistors
53 |**3**|**C11**|Cell #11
54 |**4**|**C9**|Cell #9
55 |**5**|**C7**|Cell #7
56 |**6**|**C5**|Cell #5
57 |**7**|**C3**|Cell #3
58 |**8**|**C1**|Cell #1 (minimum potential with respect to V-)
59 |**9**|**V-**|Minus of the cell stack
60 |**10**|**TEMP1**|Signal from the thermistor #1
61 |**11**|**C12**|Cell #12 (maximum potential of the cell stack)
62 |**12**|**C10**|Cell #10
63 |**13**|**C8**|Cell #8
64 |**14**|**C6**|Cell #6
65 |**15**|**C4**|Cell #4
66 |**16**|**C2**|Cell #2
67
68 === X2, X3 – headers for communication with BMS Main ===
69
70 Receptacle Housing: Molex 39012040. Terminals: Molex 5556
71
72 [[image:1740053153731-112.png||data-xwiki-image-style-alignment="center"]]
73
74 |**Pin**|**Name**|**Description**
75 |**1**|**RS485_A**|RS-485 line A for communication with the BMS Main
76 |**2**|**RS485_B**|RS-485 line B for communication with the BMS Main
77 |**3**|**+5V**|Supply voltage 5V
78 |**4**|**GND**|Ground
79
80 == (% style="color:#333333" %)Switches and indicators(%%) ==
81
82 === SWD1 – address switch ===
83
84 |**Switch number**|**Description**
85 |**1**|The first (the lowest) bit of the address. Position ON - bit is 1
86 |**2**|The second bit is the address. Position ON - bit is 1
87 |**3**|The third bit of the address. Position ON - bit is 1
88 |**4**|The fourth bit of the address. Position ON - bit is 1
89 |**5**|The fifth bit of the address. Position ON - bit is 1
90 |**6**|The sixth (the highest) bit of the address. Position ON - bit is 1
91
92 === DS1 – mode indicator ===
93
94 |**State**|**Description**
95 |**Blinking**|Communication between the BMS Main and the device is established
96 |**No light**|There is no communication between the BMS Main and the device
97
98 == Connection procedure ==
99
100 === Connection to BMS Main ===
101
102 To connect the BMS Main to BMS Logic 2.0 do the following steps:
103
104 1. Connect the BMS Main to the first BMS Logic 2.0 (P15 -> X3).
105 1. Connect the BMS Logic 2.0 to each other (X2 -> X3).
106 1. Install jumper P1 on the last BMS Logic 2.0 in the chain.
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108 (% class="box infomessage" %)
109 (((
110 **Recommendations:**
111 ~1. The total cable length (the sum of the lengths of all cables) between the BMS Main and the last BMS Logic 2.0 should not exceed 500 meters.
112 2. Make all connections with the same cable.
113 3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
114 )))
115
116 === Connecting battery cells ===
117
118 To connect the battery cells, follow the picture below. Incorrect connection of the cells can damage the BMS Logic 2.0.
119
120 Begin the connection with the negative of the battery: the "V-" of the first BMS Logic 2.0 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 2.0 is connected to the C12 of the previous BMS Logic 2.0. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the highest potential.
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122 [[image:1733148558525-686.png||data-xwiki-image-style-alignment="center" height="469" width="614"]]
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125 (% class="box warningmessage" %)
126 (((
127 **Attention!**
128 Connect the battery according to the diagram, otherwise the device may be damaged!
129 )))
130
131 === Connecting thermistors ===
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133 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 (1 temperature sensor for 6 cells).
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135 [[image:1733148558527-407.png||data-xwiki-image-style-alignment="center" height="356" width="277"]]
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