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Wiki source code of 2. Installation and connection

Version 49.2 by Admin on 2024/12/11 11:21
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1 (% data-numbered-headings-start="2" style="--numbered-headings-start: 1;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 = Installation and connection =
3
4 == Installation procedure ==
5
6 Overall and mounting dimensions of the BMS Main 2.1 are shown below.
7
8 [[image:1732198397369-222.png||data-xwiki-image-style-alignment="center" height="393" width="556"]]
9
10 |**Parameter**|**Value**
11 |Overall dimensions (length × width × height), mm|120 × 120 × 32
12 |Mounting dimensions (length × width), mm|114 × 114
13 |Mounting holes|M3
14
15 == Connection procedure ==
16
17 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.
18
19 1. Connect the charging and discharging contactors to the P6-P9 headers.
20 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.
21 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.
22 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.
23
24 == ​​​​Headers description ==
25
26 The BMS Main 2.1 headers are shown in figure below.
27
28 [[image:1731516393377-928.jpeg||alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
29
30 (% class="box warningmessage" %)
31 (((
32 **Attention!**
33 All headers are shown from the device side!
34 )))
35
36 === P1 – header for power supply ===
37
38 [[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
39
40 |**Pin**|**Name**|**Description**
41 |**1**|**GND**|Ground
42 |**2**|**V+**|Supply voltage 9-30V
43
44 === P15 – header for BMS Logic ===
45
46 [[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
47
48 |**Pin**|**Name**|**Description**
49 |**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
50 |**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
51 |**3**|**+5V**|Supply voltage for BMS Logic
52 |**4**|**GND**|Ground
53
54 === P12 – header for current sensor ===
55
56 [[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
57
58 |**Pin**|**Name**|**Description**
59 |**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
60 |**2**|**GND**|Ground
61 |**3**|**Vcs**|ADC input (current sensor output)
62 |**4**|**Vref**|ADC input (current sensor reference signal)
63
64 === P13 – header for humidity sensor ===
65
66 [[image:1732198896526-660.png||data-xwiki-image-style-alignment="center" height="70" width="64"]]
67
68 |**Pin**|**Name**|**Description**
69 |**1**|**+5V**|Supply voltage 5 V, max 50 mA
70 |**2**|**GND**|Ground
71 |**3**|**Vhs**|ADC input (humidity sensor output)
72 |**4**|**Vts**|ADC input (temperature sensor output)
73
74 === P8 – header of relay 1 ===
75
76 [[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
77
78 By default, relay 1 is used to control the discharging contactor.
79
80 |**Pin**|**Name**|**Description**
81 |**1**|**V+**|Switching voltage (up to 55V, max 2A)
82 |**2**|**NO**|Normally open contact
83
84 === P9 – header of relay 2 ===
85
86 [[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
87
88 By default, relay 2 is used to output the “Allow charging” signal.
89
90 |**Pin**|**Name**|**Description**
91 |**1**|**V+**|Switching voltage (up to 55V, max 2A)
92 |**2**|**NO**|Normally open contact
93
94 === P6 – header of relay 3 ===
95
96 [[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
97
98 By default, relay 3 is used to control the charging contactor.
99
100 |**Pin**|**Name**|**Description**
101 |**1**|**V+**|Switching voltage (up to 55V, max 8A)
102 |**2**|**NO**|Normally open contact
103
104 === P7 – header of relay 4 ===
105
106 [[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
107
108 By default, relay 4 is used to control the heater.
109
110 |**Pin**|**Name**|**Description**
111 |**1**|**V+**|Switching voltage (up to 55V, max 8A)
112 |**2**|**NO**|Normally open contact
113
114 === P14 – header for CAN and RS-485 interfaces ===
115
116 [[image:1731517180930-597.png||data-xwiki-image-style-alignment="center" height="81" width="113"]]
117
118 (% style="width:641px" %)
119 |**Pin**|**Name**|**Description**
120 |**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
121 |**2**|**CAN_H**|CAN H line for communication with external equipment
122 |**3**|**+5V_CAN**|Supply voltage 5V for external devices, max 200 mA
123 |**4**|**EXT_RS485_B**|RS-485 line B for communication with external equipment
124 |**5**|**CAN_L**|CAN L line for communication with external equipment
125 |**6**|**GND_CAN**|Ground
126
127 === P21 – CAN termination resistor jumper ===
128
129 [[image:1731517188900-976.png||data-xwiki-image-style-alignment="center" height="78" width="149"]]
130
131 To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
132
133 |**Pin**|**Name**|**Description**
134 |**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
135 |**2-3**|**-**|Termination resistor 120 Ohm is not connected
136
137 === P22 - RS-485 termination resistor jumper ===
138
139 [[image:1731517195672-298.png||data-xwiki-image-style-alignment="center" height="81" width="155"]]
140
141 To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
142
143 |**Pin**|**Name**|**Description**
144 |**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
145 |**2-3**|**-**|Terminating resistor 120 Ohm is not connected
146
147 === P11 – header for discrete inputs/outputs ===
148
149 [[image:1732198937514-731.png||data-xwiki-image-style-alignment="center" height="85" width="272"]]
150
151 |**Pin**|**Name**|**Description**
152 |**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
153 |**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
154 |**15**|**IN_2**|Discrete input #2 “dry contact” (+5V)
155 |**7**|**GND_2**|Discrete input #2 “dry contact” (ground)
156 |**14**|**IN_3**|Discrete input #3 “dry contact” (+5V)
157 |**6**|**GND_3**|Discrete input #3 “dry contact” (ground)
158 |**13**|**IN_4**|Discrete input #4 “dry contact” (+5V)
159 |**5**|**GND_4**|Discrete input #4 “dry contact” (ground)
160 |**12**|**OUT_4**|Discrete output #4 (+5V, 20mA)
161 |**4**|**GND_OUT_4**|Discrete output #4 (ground)
162 |**11**|**OUT_3**|Discrete output #3 (+5V, 20mA)
163 |**3**|**GND_OUT_3**|Discrete output #3 (ground)
164 |**10**|**OUT_2**|Discrete output #2 (+5V, 20mA)
165 |**2**|**GND_OUT_2**|Discrete output #2 (ground)
166 |**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
167 |**1**|**GND_OUT_1**|Discrete output #1 (ground)
168
169 == Indicators ==
170
171 === DS1 – power indicator ===
172
173 |**State**|**Description**
174 |**Lights red**|The device is powered
175 |**Off**|The device is not powered
176
177 === DS2 – operation indicator ===
178
179 |**State**|**Description**
180 |**Blinking green**|The BMS firmware is running
181 |**Off**|The BMS firmware is not running
182
183 === DS3 – communication indicator ===
184
185 |**State**|**Description**
186 |**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
187 |**Blinking yellow (25Hz)**|Communication with BMS Logic is established
188
189 === DS4 – error indicator ===
190
191
192 |(**State**|**Description**
193 |(**Blinking red**|Errors in communication with BMS Logic
194
195 === DS7 – relay 1 indicator ===
196
197 |**State**|**Description**
198 |**Lights green**|Relay #1 is closed
199 |**Off**|Relay #1 is opened
200
201 === DS8 – relay 2 indicator ===
202
203 |**State**|**Description**
204 |**Lights green**|Relay #2 is closed
205 |**Off**|Relay #2 is opened
206
207 === DS5 – relay 3 indicator ===
208
209 |**State**|**Description**
210 |**Lights green**|Relay #3 is closed
211 |**Off**|Relay #3 is opened
212
213 === DS6 – relay 4 indicator ===
214
215 |**State**|**Description**
216 |**Lights green**|Relay #4 is closed
217 |**Off**|Relay #4 is opened
218
219