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From version 12.1
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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 +Following chapters describes the BMS Main 2.1 headers pinout.
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  
11 -|**Pin**|**Name**|**Description**
12 -|**1**|**GND**|Ground
13 -|**2**|**V+**|Supply voltage 9-30V
19 +[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
14 14  
15 -== P15 – header for BMS Logic ==
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
16 16  
17 -[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center" height="90" width="83"]]
26 +=== P15 – header for BMS Logic ===
18 18  
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
28 +[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
24 24  
25 -== P12 – header for current sensor ==
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
26 26  
27 -[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center" height="98" width="90"]]
37 +=== P12 – header for current sensor ===
28 28  
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)
39 +[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
34 34  
35 -== P13 – header for humidity sensor ==
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)
36 36  
48 +=== P13 – header for humidity sensor ===
49 +
37 37  [[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
38 38  
39 -|**Pin**|**Name**|**Description**
40 -|**1**|**+5V**|Supply voltage 5 V, max 50 mA
41 -|**2**|**GND**|Ground
42 -|**3**|**Vhs**|ADC input (humidity sensor output)
43 -|**4**|**Vts**|ADC input (temperature sensor output)
52 +(% style="width:531px" %)
53 +|(% style="width:77px" %)**Pin**|(% style="width:92px" %)**Name**|(% style="width:359px" %)**Description**
54 +|(% style="width:77px" %)**1**|(% style="width:92px" %)**+5V**|(% style="width:359px" %)Supply voltage 5 V, max 50 mA
55 +|(% style="width:77px" %)**2**|(% style="width:92px" %)**GND**|(% style="width:359px" %)Ground
56 +|(% style="width:77px" %)**3**|(% style="width:92px" %)**Vhs**|(% style="width:359px" %)ADC input (humidity sensor output)
57 +|(% style="width:77px" %)**4**|(% style="width:92px" %)**Vts**|(% style="width:359px" %)ADC input (temperature sensor output)
44 44  
45 -P8 – header of relay 1
59 +=== P8 – header of relay 1 ===
46 46  
47 -[[image:1731517023208-641.png]]
61 +[[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  
51 -|**Pin**|**Name**|**Description**
52 -|**1**|**V+**|Switching voltage (up to 55V, max 2A)
53 -|**2**|**NO**|Normally open contact
65 +(% style="width:527px" %)
66 +|(% style="width:82px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:351px" %)**Description**
67 +|(% style="width:82px" %)**1**|(% style="width:91px" %)**V+**|(% style="width:351px" %)Switching voltage (up to 55V, max 2A)
68 +|(% style="width:82px" %)**2**|(% style="width:91px" %)**NO**|(% style="width:351px" %)Normally open contact
54 54  
55 -P9 – header of relay 2
70 +=== P9 – header of relay 2 ===
56 56  
57 -[[image:1731517025702-799.png]]
72 +[[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  
61 -|**Pin**|**Name**|**Description**
62 -|**1**|**V+**|Switching voltage (up to 55V, max 2A)
63 -|**2**|**NO**|Normally open contact
76 +(% style="width:524px" %)
77 +|(% style="width:89px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:341px" %)**Description**
78 +|(% style="width:89px" %)**1**|(% style="width:91px" %)**V+**|(% style="width:341px" %)Switching voltage (up to 55V, max 2A)
79 +|(% style="width:89px" %)**2**|(% style="width:91px" %)**NO**|(% style="width:341px" %)Normally open contact
64 64  
65 -P6 – header of relay 3
81 +=== P6 – header of relay 3 ===
66 66  
67 -[[image:1731517025702-799.png]]
83 +[[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  
71 -|**Pin**|**Name**|**Description**
72 -|**1**|**V+**|Switching voltage (up to 55V, max 8A)
73 -|**2**|**NO**|Normally open contact
87 +(% style="width:524px" %)
88 +|(% style="width:101px" %)**Pin**|(% style="width:88px" %)**Name**|(% style="width:332px" %)**Description**
89 +|(% style="width:101px" %)**1**|(% style="width:88px" %)**V+**|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
90 +|(% style="width:101px" %)**2**|(% style="width:88px" %)**NO**|(% style="width:332px" %)Normally open contact
74 74  
75 -P7 – header of relay 4
92 +=== P7 – header of relay 4 ===
76 76  
77 -[[image:1731517025702-799.png]]
94 +[[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
98 +(% style="width:530px" %)
99 +|(% style="width:102px" %)**Pin**|(% style="width:93px" %)**Name**|(% style="width:332px" %)**Description**
100 +|(% style="width:102px" %)**1**|(% style="width:93px" %)**V+**|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
101 +|(% style="width:102px" %)**2**|(% style="width:93px" %)**NO**|(% style="width:332px" %)Normally open contact
84 84  
85 -P14 – header for CAN and RS-485 interfaces
103 +=== P14 – header for CAN and RS-485 interfaces ===
86 86  
87 -[[image:1731517180930-597.png]]
105 +[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
88 88  
89 -|**Pin**|**Name**|**Description**
90 -|**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
91 -|**2**|**CAN_H**|CAN H line for communication with external equipment
92 -|**3**|**+5V_CAN**|Supply voltage 5V for external devices, max 200 mA
93 -|**4**|**EXT_RS485_B**|RS-485 line B for communication with external equipment
94 -|**5**|**CAN_L**|CAN L line for communication with external equipment
95 -|**6**|**GND_CAN**|Ground
107 +(% style="width:641px" %)
108 +|(% style="width:107px" %)**Pin**|(% style="width:127px" %)**Name**|(% style="width:404px" %)**Description**
109 +|(% style="width:107px" %)**1**|(% style="width:127px" %)**EXT_RS485_A**|(% style="width:404px" %)RS-485 line A for communication with external equipment
110 +|(% style="width:107px" %)**2**|(% style="width:127px" %)**CAN_H**|(% style="width:404px" %)CAN H line for communication with external equipment
111 +|(% style="width:107px" %)**3**|(% style="width:127px" %)**+5V_CAN**|(% style="width:404px" %)Supply voltage 5V for external devices, max 200 mA
112 +|(% style="width:107px" %)**4**|(% style="width:127px" %)**EXT_RS485_B**|(% style="width:404px" %)RS-485 line B for communication with external equipment
113 +|(% style="width:107px" %)**5**|(% style="width:127px" %)**CAN_L**|(% style="width:404px" %)CAN L line for communication with external equipment
114 +|(% style="width:107px" %)**6**|(% style="width:127px" %)**GND_CAN**|(% style="width:404px" %)Ground
96 96  
97 -P21 – CAN termination resistor jumper
116 +=== P21 – CAN termination resistor jumper ===
98 98  
99 -[[image:1731517188900-976.png]]
118 +[[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  
... ... @@ -104,18 +104,19 @@
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
126 +=== P22 - RS-485 termination resistor jumper ===
108 108  
109 -[[image:1731517195672-298.png]]
128 +[[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  
113 -|**Pin**|**Name**|**Description**
114 -|**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
115 -|**2-3**|**-**|Terminating resistor 120 Ohm is not connected
132 +|**Pin**|(% style="width:108px" %)**Name**|(% style="width:1296px" %)**Description**
133 +|**1-2**|(% style="width:108px" %)**120 Ohm**|(% style="width:1296px" %)Terminating resistor 120 Ohm is connected
134 +|**2-3**|(% style="width:108px" %)**-**|(% style="width:1296px" %)Terminating resistor 120 Ohm is not connected
116 116  
117 -P11 – header for discrete inputs/outputs
136 +=== P11 – header for discrete inputs/outputs ===
118 118  
138 +[[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)
... ... @@ -135,64 +135,51 @@
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
158 += Indicators =
141 141  
160 +=== DS1 – power indicator ===
161 +
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
166 +=== 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
172 +=== 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
178 +=== 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
183 +=== DS7 – relay 1 indicator ===
172 172  
173 -|S**tate**|**Description**
185 +|**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
189 +=== DS8 – relay 2 indicator ===
180 180  
191 +
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
196 +=== 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
202 +=== DS6 – relay 4 indicator ===
196 196  
197 197  |**State**|**Description**
198 198  |**Lights green**|Relay #4 is closed
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