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Wiki source code of 2. Connection

Version 20.2 by Admin on 2024/11/13 17:33
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1 = ​​​​Headers =
2
3 The BMS Main 2.1 headers are shown in figure below.
4
5 [[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
6
7 === P1 – header for power supply ===
8
9 [[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
10
11 |**Pin**|**Name**|**Description**
12 |**1**|**GND**|Ground
13 |**2**|**V+**|Supply voltage 9-30V
14
15 === P15 – header for BMS Logic ===
16
17 [[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
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
24
25 === P12 – header for current sensor ===
26
27 [[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
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)
34
35 === P13 – header for humidity sensor ===
36
37 [[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
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)
44
45 === P8 – header of relay 1 ===
46
47 [[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
48
49 By default, relay 1 is used to control the discharging contactor.
50
51 |**Pin**|**Name**|**Description**
52 |**1**|**V+**|Switching voltage (up to 55V, max 2A)
53 |**2**|**NO**|Normally open contact
54
55 === P9 – header of relay 2 ===
56
57 [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
58
59 By default, relay 2 is used to output the “Allow charging” signal.
60
61 |**Pin**|**Name**|**Description**
62 |**1**|**V+**|Switching voltage (up to 55V, max 2A)
63 |**2**|**NO**|Normally open contact
64
65 === P6 – header of relay 3 ===
66
67 [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
68
69 By default, relay 3 is used to control the charging contactor.
70
71 |**Pin**|**Name**|**Description**
72 |**1**|**V+**|Switching voltage (up to 55V, max 8A)
73 |**2**|**NO**|Normally open contact
74
75 === P7 – header of relay 4 ===
76
77 [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
78
79 By default, relay 4 is used to control the heater.
80
81 **Pin**|**Name**|**Description**
82 **1**|**V+**|Switching voltage (up to 55V, max 8A)
83 **2**|**NO**|Normally open contact
84
85 === P14 – header for CAN and RS-485 interfaces ===
86
87 [[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
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
96
97 === P21 – CAN termination resistor jumper ===
98
99 [[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
100
101 To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
102
103 |**Pin**|**Name**|**Description**
104 |**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
105 |**2-3**|**-**|Termination resistor 120 Ohm is not connected
106
107 === P22 - RS-485 termination resistor jumper ===
108
109 [[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
110
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
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
116
117 === P11 – header for discrete inputs/outputs ===
118
119 [[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
120
121 |**Pin**|**Name**|**Description**
122 |**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
123 |**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
124 |**15**|**IN_2**|Discrete input #2 “dry contact” (+5V)
125 |**7**|**GND_2**|Discrete input #2 “dry contact” (ground)
126 |**14**|**IN_3**|Discrete input #3 “dry contact” (+5V)
127 |**6**|**GND_3**|Discrete input #3 “dry contact” (ground)
128 |**13**|**IN_4**|Discrete input #4 “dry contact” (+5V)
129 |**5**|**GND_4**|Discrete input #4 “dry contact” (ground)
130 |**12**|**OUT_4**|Discrete output #4 (+5V, 20mA)
131 |**4**|**GND_OUT_4**|Discrete output #4 (ground)
132 |**11**|**OUT_3**|Discrete output #3 (+5V, 20mA)
133 |**3**|**GND_OUT_3**|Discrete output #3 (ground)
134 |**10**|**OUT_2**|Discrete output #2 (+5V, 20mA)
135 |**2**|**GND_OUT_2**|Discrete output #2 (ground)
136 |**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
137 |**1**|**GND_OUT_1**|Discrete output #1 (ground)
138
139 = Indicators =
140
141 === DS1 – power indicator ===
142
143 |**State**|**Description**
144 |**Lights red**|The device is powered
145 |**Off**|The device is not powered
146
147 === DS2 – operation indicator ===
148
149 |**State**|**Description**
150 |**Blinking green**|The BMS firmware is running
151 |**Off**|The BMS firmware is not running
152
153 === DS3 – communication indicator ===
154
155 |**State**|**Description**
156 |**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
157 |**Blinking yellow (25Hz)**|Communication with BMS Logic is established
158
159 === DS4 – error indicator ===
160
161 |**State**|**Description**
162 |**Blinking red**|Errors in communication with BMS Logic
163
164 === DS7 – relay 1 indicator ===
165
166 |**State**|**Description**
167 |**Lights green**|Relay #1 is closed
168 |**Off**|Relay #1 is opened
169
170 === DS8 – relay 2 indicator ===
171
172
173 |**State**|**Description**
174 |**Lights green**|Relay #2 is closed
175 |**Off**|Relay #2 is opened
176
177 === DS5 – relay 3 indicator ===
178
179 |**State**|**Description**
180 |**Lights green**|Relay #3 is closed
181 |**Off**|Relay #3 is opened
182
183 === DS6 – relay 4 indicator ===
184
185 |**State**|**Description**
186 |**Lights green**|Relay #4 is closed
187 |**Off**|Relay #4 is opened
188
189