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1 -2. Connection
1 +2. Connection procedure
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1 -Additional modules.BMS Main 2\.1.WebHome
1 +Controllers.BMS Main 2\.1.WebHome
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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  
59 +=== P8 – header of relay 1 ===
45 45  
46 -1.
47 -11.
48 -111. P8 – header of relay 1
61 +[[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
49 49  
50 -[[image:file:///C:/Users/INASIB~~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.emz]]
51 -
52 52  By default, relay 1 is used to control the discharging contactor.
53 53  
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  
70 +=== P9 – header of relay 2 ===
71 +
72 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
73 +
74 +By default, relay 2 is used to output the “Allow charging” signal.
75 +
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
80 +
81 +=== P6 – header of relay 3 ===
82 +
83 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
84 +
85 +By default, relay 3 is used to control the charging contactor.
86 +
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
91 +
92 +=== P7 – header of relay 4 ===
93 +
94 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
95 +
96 +By default, relay 4 is used to control the heater.
97 +
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
102 +
103 +=== P14 – header for CAN and RS-485 interfaces ===
104 +
105 +[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
106 +
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
115 +
116 +=== P21 – CAN termination resistor jumper ===
117 +
118 +[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
119 +
120 +To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
121 +
55 55  |**Pin**|**Name**|**Description**
56 -|**1**|**V+**|Switching voltage (up to 55V, max 2A)
57 -|**2**|**NO**|Normally open contact
123 +|**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
124 +|**2-3**|**-**|Termination resistor 120 Ohm is not connected
58 58  
126 +=== P22 - RS-485 termination resistor jumper ===
59 59  
60 -1.
61 -11.
62 -111. P9 – header of relay 2
128 +[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
63 63  
64 -[[image:file:///C:/Users/INASIB~~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.emz]]
130 +To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
65 65  
66 -By default, relay 2 is used to output the “Allow charging” signal.
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
67 67  
136 +=== P11 – header for discrete inputs/outputs ===
68 68  
138 +[[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
139 +
69 69  |**Pin**|**Name**|**Description**
70 -|**1**|**V+**|Switching voltage (up to 55V, max 2A)
71 -|**2**|**NO**|Normally open contact
141 +|**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
142 +|**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
143 +|**15**|**IN_2**|Discrete input #2 “dry contact” (+5V)
144 +|**7**|**GND_2**|Discrete input #2 “dry contact” (ground)
145 +|**14**|**IN_3**|Discrete input #3 “dry contact” (+5V)
146 +|**6**|**GND_3**|Discrete input #3 “dry contact” (ground)
147 +|**13**|**IN_4**|Discrete input #4 “dry contact” (+5V)
148 +|**5**|**GND_4**|Discrete input #4 “dry contact” (ground)
149 +|**12**|**OUT_4**|Discrete output #4 (+5V, 20mA)
150 +|**4**|**GND_OUT_4**|Discrete output #4 (ground)
151 +|**11**|**OUT_3**|Discrete output #3 (+5V, 20mA)
152 +|**3**|**GND_OUT_3**|Discrete output #3 (ground)
153 +|**10**|**OUT_2**|Discrete output #2 (+5V, 20mA)
154 +|**2**|**GND_OUT_2**|Discrete output #2 (ground)
155 +|**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
156 +|**1**|**GND_OUT_1**|Discrete output #1 (ground)
72 72  
158 += Indicators =
73 73  
160 +=== DS1 – power indicator ===
74 74  
162 +|**State**|**Description**
163 +|**Lights red**|The device is powered
164 +|**Off**|The device is not powered
165 +
166 +=== DS2 – operation indicator ===
167 +
168 +|**State**|**Description**
169 +|**Blinking green**|The BMS firmware is running
170 +|**Off**|The BMS firmware is not running
171 +
172 +=== DS3 – communication indicator ===
173 +
174 +|**State**|**Description**
175 +|**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
176 +|**Blinking yellow (25Hz)**|Communication with BMS Logic is established
177 +
178 +=== DS4 – error indicator ===
179 +
180 +|**State**|**Description**
181 +|**Blinking red**|Errors in communication with BMS Logic
182 +
183 +=== DS7 – relay 1 indicator ===
184 +
185 +|**State**|**Description**
186 +|**Lights green**|Relay #1 is closed
187 +|**Off**|Relay #1 is opened
188 +
189 +=== DS8 – relay 2 indicator ===
190 +
191 +
192 +|**State**|**Description**
193 +|**Lights green**|Relay #2 is closed
194 +|**Off**|Relay #2 is opened
195 +
196 +=== DS5 – relay 3 indicator ===
197 +
198 +|**State**|**Description**
199 +|**Lights green**|Relay #3 is closed
200 +|**Off**|Relay #3 is opened
201 +
202 +=== DS6 – relay 4 indicator ===
203 +
204 +|**State**|**Description**
205 +|**Lights green**|Relay #4 is closed
206 +|**Off**|Relay #4 is opened
207 +
75 75  
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