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Last modified by Admin on 2025/07/15 17:33
From version 12.1
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To version 20.3
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Title
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1 -2. Connection
1 +2. Connection procedure
Parent
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1 -Additional modules.BMS Main 2\.1.WebHome
1 +Controllers.BMS Main 2\.1.WebHome
Content
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1 -= ​​​​Headers =
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.
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 +
3 3  The BMS Main 2.1 headers are shown in figure below.
4 4  
5 -[[The BMS Main 2.1 headers>>image:1731516393377-928.jpeg||height="430" width="428"]]
12 +[[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
6 6  
7 -== P1 – header for power supply ==
14 +(% class="wikigeneratedid" %)
15 +Folo
8 8  
9 -[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center" height="93" width="49"]]
17 +=== P1 – header for power supply ===
10 10  
19 +[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
20 +
11 11  |**Pin**|**Name**|**Description**
12 12  |**1**|**GND**|Ground
13 13  |**2**|**V+**|Supply voltage 9-30V
14 14  
15 -== P15 – header for BMS Logic ==
25 +=== P15 – header for BMS Logic ===
16 16  
17 -[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center" height="90" width="83"]]
27 +[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
18 18  
19 19  |**Pin**|**Name**|**Description**
20 20  |**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
... ... @@ -22,9 +22,9 @@
22 22  |**3**|**+5V**|Supply voltage for BMS Logic
23 23  |**4**|**GND**|Ground
24 24  
25 -== P12 – header for current sensor ==
35 +=== P12 – header for current sensor ===
26 26  
27 -[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center" height="98" width="90"]]
37 +[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
28 28  
29 29  |**Pin**|**Name**|**Description**
30 30  |**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
... ... @@ -32,7 +32,7 @@
32 32  |**3**|**Vcs**|ADC input (current sensor output)
33 33  |**4**|**Vref**|ADC input (current sensor reference signal)
34 34  
35 -== P13 – header for humidity sensor ==
45 +=== P13 – header for humidity sensor ===
36 36  
37 37  [[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
38 38  
... ... @@ -42,9 +42,9 @@
42 42  |**3**|**Vhs**|ADC input (humidity sensor output)
43 43  |**4**|**Vts**|ADC input (temperature sensor output)
44 44  
45 -P8 – header of relay 1
55 +=== P8 – header of relay 1 ===
46 46  
47 -[[image:1731517023208-641.png]]
57 +[[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
48 48  
49 49  By default, relay 1 is used to control the discharging contactor.
50 50  
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52 52  |**1**|**V+**|Switching voltage (up to 55V, max 2A)
53 53  |**2**|**NO**|Normally open contact
54 54  
55 -P9 – header of relay 2
65 +=== P9 – header of relay 2 ===
56 56  
57 -[[image:1731517025702-799.png]]
67 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
58 58  
59 59  By default, relay 2 is used to output the “Allow charging” signal.
60 60  
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62 62  |**1**|**V+**|Switching voltage (up to 55V, max 2A)
63 63  |**2**|**NO**|Normally open contact
64 64  
65 -P6 – header of relay 3
75 +=== P6 – header of relay 3 ===
66 66  
67 -[[image:1731517025702-799.png]]
77 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
68 68  
69 69  By default, relay 3 is used to control the charging contactor.
70 70  
... ... @@ -72,19 +72,19 @@
72 72  |**1**|**V+**|Switching voltage (up to 55V, max 8A)
73 73  |**2**|**NO**|Normally open contact
74 74  
75 -P7 – header of relay 4
85 +=== P7 – header of relay 4 ===
76 76  
77 -[[image:1731517025702-799.png]]
87 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
78 78  
79 79  By default, relay 4 is used to control the heater.
80 80  
81 -|**Pin**|**Name**|**Description**
82 -|**1**|**V+**|Switching voltage (up to 55V, max 8A)
83 -|**2**|**NO**|Normally open contact
91 +**Pin**|**Name**|**Description**
92 +**1**|**V+**|Switching voltage (up to 55V, max 8A)
93 +**2**|**NO**|Normally open contact
84 84  
85 -P14 – header for CAN and RS-485 interfaces
95 +=== P14 – header for CAN and RS-485 interfaces ===
86 86  
87 -[[image:1731517180930-597.png]]
97 +[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
88 88  
89 89  |**Pin**|**Name**|**Description**
90 90  |**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
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94 94  |**5**|**CAN_L**|CAN L line for communication with external equipment
95 95  |**6**|**GND_CAN**|Ground
96 96  
97 -P21 – CAN termination resistor jumper
107 +=== P21 – CAN termination resistor jumper ===
98 98  
99 -[[image:1731517188900-976.png]]
109 +[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
100 100  
101 101  To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
102 102  
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104 104  |**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
105 105  |**2-3**|**-**|Termination resistor 120 Ohm is not connected
106 106  
107 -P22 - RS-485 termination resistor jumper
117 +=== P22 - RS-485 termination resistor jumper ===
108 108  
109 -[[image:1731517195672-298.png]]
119 +[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
110 110  
111 111  To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
112 112  
... ... @@ -114,8 +114,9 @@
114 114  |**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
115 115  |**2-3**|**-**|Terminating resistor 120 Ohm is not connected
116 116  
117 -P11 – header for discrete inputs/outputs
127 +=== P11 – header for discrete inputs/outputs ===
118 118  
129 +[[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
119 119  
120 120  |**Pin**|**Name**|**Description**
121 121  |**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
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135 135  |**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
136 136  |**1**|**GND_OUT_1**|Discrete output #1 (ground)
137 137  
138 -1.
139 -11.
140 -111. DS1 – power indicator
149 += Indicators =
141 141  
151 +=== DS1 – power indicator ===
152 +
142 142  |**State**|**Description**
143 143  |**Lights red**|The device is powered
144 144  |**Off**|The device is not powered
145 145  
146 -1.
147 -11.
148 -111. DS2 – operation indicator
157 +=== DS2 – operation indicator ===
149 149  
150 150  |**State**|**Description**
151 151  |**Blinking green**|The BMS firmware is running
152 152  |**Off**|The BMS firmware is not running
153 153  
154 -1.
155 -11.
156 -111. DS3 – communication indicator
163 +=== DS3 – communication indicator ===
157 157  
158 158  |**State**|**Description**
159 159  |**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
160 160  |**Blinking yellow (25Hz)**|Communication with BMS Logic is established
161 161  
162 -1.
163 -11.
164 -111. DS4 – error indicator
169 +=== DS4 – error indicator ===
165 165  
166 166  |**State**|**Description**
167 167  |**Blinking red**|Errors in communication with BMS Logic
168 168  
169 -1.
170 -11.
171 -111. DS7 – relay 1 indicator
174 +=== DS7 – relay 1 indicator ===
172 172  
173 -|S**tate**|**Description**
176 +|**State**|**Description**
174 174  |**Lights green**|Relay #1 is closed
175 175  |**Off**|Relay #1 is opened
176 176  
177 -1.
178 -11.
179 -111. DS8 – relay 2 indicator
180 +=== DS8 – relay 2 indicator ===
180 180  
182 +
181 181  |**State**|**Description**
182 182  |**Lights green**|Relay #2 is closed
183 183  |**Off**|Relay #2 is opened
184 184  
185 -1.
186 -11.
187 -111. DS5 – relay 3 indicator
187 +=== DS5 – relay 3 indicator ===
188 188  
189 189  |**State**|**Description**
190 190  |**Lights green**|Relay #3 is closed
191 191  |**Off**|Relay #3 is opened
192 192  
193 -1.
194 -11.
195 -111. DS6 – relay 4 indicator
193 +=== DS6 – relay 4 indicator ===
196 196  
197 197  |**State**|**Description**
198 198  |**Lights green**|Relay #4 is closed
1731517946345-632.png
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