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Last modified by Admin on 2025/07/15 17:33
From version 4.1
edited by Admin
on 2024/11/13 16:49
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To version 13.1
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on 2024/11/13 17:06
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4 4  
5 5  [[The BMS Main 2.1 headers>>image:1731516393377-928.jpeg||height="430" width="428"]]
6 6  
7 -== P1 – header for power supply ==
7 +=== P1 – header for power supply ===
8 8  
9 -[[image:1731516474613-418.png||height="89" width="47"]]
9 +[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
10 10  
11 11  |**Pin**|**Name**|**Description**
12 12  |**1**|**GND**|Ground
13 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 +|**State**|**Description**
173 +|**Lights green**|Relay #2 is closed
174 +|**Off**|Relay #2 is opened
175 +
176 +=== DS5 – relay 3 indicator ===
177 +
178 +|**State**|**Description**
179 +|**Lights green**|Relay #3 is closed
180 +|**Off**|Relay #3 is opened
181 +
182 +=== DS6 – relay 4 indicator ===
183 +
184 +|**State**|**Description**
185 +|**Lights green**|Relay #4 is closed
186 +|**Off**|Relay #4 is opened
187 +
188 +
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