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From version 21.2
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Title
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1 -2. Connection procedure
1 +2. Connection
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1 -Controllers.BMS Main 2\.1.WebHome
1 +Additional modules.BMS Main 2\.1.WebHome
Content
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1 -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 += ​​​​Headers =
2 2  
3 -1. Connect the charging and discharging contactors to the P6-P9 headers.
4 -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.
5 -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.
6 -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.
7 -
8 -= ​​​​Headers description =
9 -
10 10  The BMS Main 2.1 headers are shown in figure below.
11 11  
12 -[[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
5 +[[The BMS Main 2.1 headers>>image:1731516393377-928.jpeg||height="430" width="428"]]
13 13  
14 -(% class="wikigeneratedid" %)
15 -Following chapters describes the BMS Main 2.1 headers pinout.
7 +== P1 – header for power supply ==
16 16  
17 -=== P1 – header for power supply ===
18 -
19 19  [[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
20 20  
21 -(% style="width:339px" %)
22 -|(% style="width:71px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:174px" %)**Description**
23 -|(% style="width:71px" %)**1**|(% style="width:91px" %)**GND**|(% style="width:174px" %)Ground
24 -|(% style="width:71px" %)**2**|(% style="width:91px" %)**V+**|(% style="width:174px" %)Supply voltage 9-30V
11 +|**Pin**|**Name**|**Description**
12 +|**1**|**GND**|Ground
13 +|**2**|**V+**|Supply voltage 9-30V
25 25  
26 -=== P15 – header for BMS Logic ===
15 +== P15 – header for BMS Logic ==
27 27  
28 28  [[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
29 29  
30 -(% style="width:524px" %)
31 -|(% style="width:69px" %)**Pin**|(% style="width:97px" %)**Name**|(% style="width:355px" %)**Description**
32 -|(% style="width:69px" %)**1**|(% style="width:97px" %)**RS485_A**|(% style="width:355px" %)RS-485 line A for communication with BMS Logic
33 -|(% style="width:69px" %)**2**|(% style="width:97px" %)**RS485_B**|(% style="width:355px" %)RS-485 line B for communication with BMS Logic
34 -|(% style="width:69px" %)**3**|(% style="width:97px" %)**+5V**|(% style="width:355px" %)Supply voltage for BMS Logic
35 -|(% style="width:69px" %)**4**|(% style="width:97px" %)**GND**|(% style="width:355px" %)Ground
19 +|**Pin**|**Name**|**Description**
20 +|**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
21 +|**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
22 +|**3**|**+5V**|Supply voltage for BMS Logic
23 +|**4**|**GND**|Ground
36 36  
37 -=== P12 – header for current sensor ===
25 +== P12 – header for current sensor ==
38 38  
39 39  [[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
40 40  
41 -(% style="width:531px" %)
42 -|(% style="width:75px" %)**Pin**|(% style="width:93px" %)**Name**|(% style="width:360px" %)**Description**
43 -|(% style="width:75px" %)**1**|(% style="width:93px" %)**+5V**|(% style="width:360px" %)Supply voltage for the current sensor 5V, max 50 mA
44 -|(% style="width:75px" %)**2**|(% style="width:93px" %)**GND**|(% style="width:360px" %)Ground
45 -|(% style="width:75px" %)**3**|(% style="width:93px" %)**Vcs**|(% style="width:360px" %)ADC input (current sensor output)
46 -|(% style="width:75px" %)**4**|(% style="width:93px" %)**Vref**|(% style="width:360px" %)ADC input (current sensor reference signal)
29 +|**Pin**|**Name**|**Description**
30 +|**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
31 +|**2**|**GND**|Ground
32 +|**3**|**Vcs**|ADC input (current sensor output)
33 +|**4**|**Vref**|ADC input (current sensor reference signal)
47 47  
48 -=== P13 – header for humidity sensor ===
35 +== P13 – header for humidity sensor ==
49 49  
50 50  [[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
51 51  
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55 55  |**3**|**Vhs**|ADC input (humidity sensor output)
56 56  |**4**|**Vts**|ADC input (temperature sensor output)
57 57  
58 -=== P8 – header of relay 1 ===
45 +== P8 – header of relay 1 ==
59 59  
60 60  [[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
61 61  
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65 65  |**1**|**V+**|Switching voltage (up to 55V, max 2A)
66 66  |**2**|**NO**|Normally open contact
67 67  
68 -=== P9 – header of relay 2 ===
55 +== P9 – header of relay 2 ==
69 69  
70 70  [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
71 71  
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75 75  |**1**|**V+**|Switching voltage (up to 55V, max 2A)
76 76  |**2**|**NO**|Normally open contact
77 77  
78 -=== P6 – header of relay 3 ===
65 +== P6 – header of relay 3 ==
79 79  
80 80  [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
81 81  
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85 85  |**1**|**V+**|Switching voltage (up to 55V, max 8A)
86 86  |**2**|**NO**|Normally open contact
87 87  
88 -=== P7 – header of relay 4 ===
75 +== P7 – header of relay 4 ==
89 89  
90 90  [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
91 91  
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95 95  |**1**|**V+**|Switching voltage (up to 55V, max 8A)
96 96  |**2**|**NO**|Normally open contact
97 97  
98 -=== P14 – header for CAN and RS-485 interfaces ===
85 +== P14 – header for CAN and RS-485 interfaces ==
99 99  
100 100  [[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
101 101  
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107 107  |**5**|**CAN_L**|CAN L line for communication with external equipment
108 108  |**6**|**GND_CAN**|Ground
109 109  
110 -=== P21 – CAN termination resistor jumper ===
97 +== P21 – CAN termination resistor jumper ==
111 111  
112 112  [[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
113 113  
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117 117  |**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
118 118  |**2-3**|**-**|Termination resistor 120 Ohm is not connected
119 119  
120 -=== P22 - RS-485 termination resistor jumper ===
107 +== P22 - RS-485 termination resistor jumper ==
121 121  
122 122  [[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
123 123  
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127 127  |**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
128 128  |**2-3**|**-**|Terminating resistor 120 Ohm is not connected
129 129  
130 -=== P11 – header for discrete inputs/outputs ===
117 +== P11 – header for discrete inputs/outputs ==
131 131  
132 132  [[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
133 133  
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149 149  |**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
150 150  |**1**|**GND_OUT_1**|Discrete output #1 (ground)
151 151  
152 -= Indicators =
139 +== DS1 – power indicator ==
153 153  
154 -=== DS1 – power indicator ===
155 -
156 156  |**State**|**Description**
157 157  |**Lights red**|The device is powered
158 158  |**Off**|The device is not powered
159 159  
160 -=== DS2 – operation indicator ===
145 +== DS2 – operation indicator ==
161 161  
162 162  |**State**|**Description**
163 163  |**Blinking green**|The BMS firmware is running
164 164  |**Off**|The BMS firmware is not running
165 165  
166 -=== DS3 – communication indicator ===
151 +== DS3 – communication indicator ==
167 167  
168 168  |**State**|**Description**
169 169  |**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
170 170  |**Blinking yellow (25Hz)**|Communication with BMS Logic is established
171 171  
172 -=== DS4 – error indicator ===
157 +== DS4 – error indicator ==
173 173  
174 174  |**State**|**Description**
175 175  |**Blinking red**|Errors in communication with BMS Logic
176 176  
177 -=== DS7 – relay 1 indicator ===
162 +== DS7 – relay 1 indicator ==
178 178  
179 179  |**State**|**Description**
180 180  |**Lights green**|Relay #1 is closed
181 181  |**Off**|Relay #1 is opened
182 182  
183 -=== DS8 – relay 2 indicator ===
168 +== DS8 – relay 2 indicator ==
184 184  
185 -
186 186  |**State**|**Description**
187 187  |**Lights green**|Relay #2 is closed
188 188  |**Off**|Relay #2 is opened
189 189  
190 -=== DS5 – relay 3 indicator ===
174 +== DS5 – relay 3 indicator ==
191 191  
192 192  |**State**|**Description**
193 193  |**Lights green**|Relay #3 is closed
194 194  |**Off**|Relay #3 is opened
195 195  
196 -=== DS6 – relay 4 indicator ===
180 +== DS6 – relay 4 indicator ==
197 197  
198 198  |**State**|**Description**
199 199  |**Lights green**|Relay #4 is closed
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