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Last modified by Admin on 2025/03/18 13:04
From version 2.1
edited by Admin
on 2024/12/02 12:44
Change comment: There is no comment for this version
To version 6.1
edited by Admin
on 2024/12/02 14:53
Change comment: There is no comment for this version

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19 19  |Mounting holes|(% style="width:160px" %)M4
20 20  |Headers X1-X4 type|(% style="width:160px" %)Molex series Micro-Fit
21 21  
22 -== 2.2 Headers description ==
22 +== 2.2 Headers ==
23 23  
24 24  The BMS Logic 12 is designed to measure temperature and voltage of 12 battery cells.
25 25  
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27 27  
28 28  === 2.2.1 X1 – header for cells ===
29 29  
30 -[[image:1733143152741-474.jpeg||data-xwiki-image-style-alignment="center" height="93" width="241"]]
30 +[[image:1733143152741-474.jpeg||data-xwiki-image-style-alignment="center" height="81" width="210"]]
31 31  
32 32  |**Pin**|**Name**|**Description**
33 33  |**1**|**V-**|Minus of the cell stack
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77 77  
78 78  === 2.2.3 X3, X4 – headers for communication with BMS Main ===
79 79  
80 +[[image:1733151077073-306.png||data-xwiki-image-style-alignment="center" height="78" width="71"]]
81 +
80 80  |**Pin**|**Name**|**Description**
81 81  |**1**|**RS485_A**|RS-485 line A for communication with the BMS Main
82 82  |**2**|**RS485_B**|RS-485 line B for communication with the BMS Main
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83 83  |**3**|**+5V**|Supply voltage 5V
84 84  |**4**|**GND**|Ground
85 85  
86 -== 2.3 Switches and indicators ==
88 +(% style="color:inherit; font-family:inherit; font-size:max(20px, min(24px, 12.8889px + 0.925926vw))" %)2.3 Switches and indicators
87 87  
88 88  === 2.3.1 SWD1 – address switch ===
89 89  
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96 96  
97 97  (% class="box infomessage" %)
98 98  (((
99 -**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 3.2** **Configuration procedure).
101 +**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 [[3.** **Configuration procedure>>doc:drafts.BMS Logic 12.3\. Configuration.WebHome]]).
100 100  )))
101 101  
102 102  === 2.3.2 SWD2 – RS-485 termination resistor switch ===
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110 110  
111 111  === 2.3.3 DS1 – mode indicator ===
112 112  
113 -|**State**|**Description**
114 -|Blinking|Connection between the BMS Main and the device is established
115 -|Short flashing (~~50 milliseconds in a second)|The device is measuring voltage and temperature. No communication between the BMS Main and the device
116 -|Long flashing (1 second in a 2 second period)|The device is in the bootloader mode
115 +(% style="width:718px" %)
116 +|**State**|(% style="width:422px" %)**Description**
117 +|Blinking|(% style="width:422px" %)Connection between the BMS Main and the device is established
118 +|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
119 +|Long flashing (1 second in a 2 second period)|(% style="width:422px" %)The device is in the bootloader mode
117 117  
118 -
121 +== 2.4 Connection procedure ==
122 +
123 +=== 2.4.1 Connection to BMS Main ===
124 +
125 +To connect the BMS Main to BMS Logic 12 do the following steps:
126 +
127 +1. Connect the BMS Main to the first BMS Logic 12 (P15 -> X3).
128 +1. Connect the BMS Logic 12 to each other (X4 -> X3).
129 +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.
130 +
131 +(% class="box infomessage" %)
132 +(((
133 +**Recommendations:**
134 +~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.
135 +2. Make all connections with the same cable.
136 +3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
137 +)))
138 +
139 +=== 2.4.2 Connecting battery cells ===
140 +
141 +To connect the battery cells, follow Figure 16. Incorrect connection of the cells can damage the BMS Logic 12.
142 +
143 +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.
144 +
145 +[[image:1733145484804-250.jpeg||data-xwiki-image-style-alignment="center" height="507" width="587"]]
146 +
147 +
148 +(% class="box warningmessage" %)
149 +(((
150 +**Attention!**
151 +Connect the battery according to the diagram, otherwise the device may be damaged.
152 +)))
153 +
154 +=== 2.4.3 Connecting thermistors ===
155 +
156 +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).
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