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Last modified by Admin on 2025/07/15 17:33
From version 20.3
edited by Admin
on 2024/11/13 17:38
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To version 14.1
edited by Admin
on 2024/11/13 17:08
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Title
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1 -2. Connection procedure
1 +2. Connection
Parent
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1 -Controllers.BMS Main 2\.1.WebHome
1 +Additional modules.BMS Main 2\.1.WebHome
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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 -Folo
16 -
17 17  === P1 – header for power supply ===
18 18  
19 19  [[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
20 20  
21 -|**Pin**|**Name**|**Description**
22 -|**1**|**GND**|Ground
23 -|**2**|**V+**|Supply voltage 9-30V
11 +|(% style="width:100px" %)**Pin**|(% style="width:502px" %)**Name**|**Description**
12 +|(% style="width:100px" %)**1**|(% style="width:502px" %)**GND**|Ground
13 +|(% style="width:100px" %)**2**|(% style="width:502px" %)**V+**|Supply voltage 9-30V
24 24  
25 25  === P15 – header for BMS Logic ===
26 26  
27 27  [[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
28 28  
29 -|**Pin**|**Name**|**Description**
30 -|**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
31 -|**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
32 -|**3**|**+5V**|Supply voltage for BMS Logic
33 -|**4**|**GND**|Ground
19 +|(% style="width:100px" %)**Pin**|(% style="width:290px" %)**Name**|**Description**
20 +|(% style="width:100px" %)**1**|(% style="width:290px" %)**RS485_A**|RS-485 line A for communication with BMS Logic
21 +|(% style="width:100px" %)**2**|(% style="width:290px" %)**RS485_B**|RS-485 line B for communication with BMS Logic
22 +|(% style="width:100px" %)**3**|(% style="width:290px" %)**+5V**|Supply voltage for BMS Logic
23 +|(% style="width:100px" %)**4**|(% style="width:290px" %)**GND**|Ground
34 34  
35 35  === P12 – header for current sensor ===
36 36  
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88 88  
89 89  By default, relay 4 is used to control the heater.
90 90  
91 -**Pin**|**Name**|**Description**
92 -**1**|**V+**|Switching voltage (up to 55V, max 8A)
93 -**2**|**NO**|Normally open contact
81 +|**Pin**|**Name**|**Description**
82 +|**1**|**V+**|Switching voltage (up to 55V, max 8A)
83 +|**2**|**NO**|Normally open contact
94 94  
95 95  === P14 – header for CAN and RS-485 interfaces ===
96 96  
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179 179  
180 180  === DS8 – relay 2 indicator ===
181 181  
182 -
183 183  |**State**|**Description**
184 184  |**Lights green**|Relay #2 is closed
185 185  |**Off**|Relay #2 is opened
1731517946345-632.png
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