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Last modified by Admin on 2026/04/02 13:49
From version 34.1
edited by Admin
on 2024/12/11 11:33
Change comment: Renamed back-links.
To version 88.2
edited by Admin
on 2026/03/25 16:42
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Summary

Details

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Parent
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1 -Battery management systems.BMS Main 3.WebHome
1 +drafts.BMS Main 2R.WebHome
Content
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1 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 2  = Installation and connection =
3 3  
4 +== Safety rules ==
5 +
6 +To perform the protection functions, the BMS must be able to disconnect the battery from the load and charger. To do this, **at least one contactor** able to break the load and charge circuits must be connected to the BMS.
7 +
8 +Before use, **configure the system**. Proper operation of the BMS is possible only if it is correctly configured.
9 +
10 +(% class="box errormessage" %)
11 +(((
12 +The BMS can be connected to batteries with life-threatening and health-hazardous voltage levels. When working with high-voltage batteries, observe electrical safety regulations, use safety glasses, protective clothing, insulated tools and appliances. To prevent the damage of device avoid electrostatic discharges while working with the battery.
13 +)))
14 +
15 +(% class="box errormessage" %)
16 +(((
17 +The system is not designed to operate with batteries whose total voltage exceeds 3000 V.
18 +)))
19 +
4 4  == Installation procedure ==
5 5  
6 -The mounting location of the BMS Main 3.0 device must be protected from mechanical particles (dust, dirt, large objects) and water. The installation location must provide easy access for subsequent connection to the device connectors.
22 +The mounting location of the BMS Main 2R device must be protected from mechanical particles (dust, dirt, large objects) and water. The installation location must provide easy access for subsequent connection to the device connectors.
7 7  
8 8  Overall and mounting dimensions are shown in figure below.
9 9  
10 -(% data-widget="image" contenteditable="false" tabindex="-1" %)[[image:1733311711953-224.png||data-xwiki-image-style-alignment="center" height="566" width="775"]](% title="Click and drag to resize" %)​
26 +[[image:1774349658793-888.0b.STEP.JPG||data-xwiki-image-style-alignment="center" height="522" width="450"]](% title="Click and drag to resize" %)​
11 11  
12 12  |**Parameter**|**Value**
13 -|Overall dimensions (length × width × height), mm|200 × 123 × 12
14 -|Mounting dimensions (length × width), mm|194 × 114
29 +|Overall dimensions (length × width × height), mm|120 × 120 × 16
30 +|Mounting dimensions (length × width), mm|114 × 114
15 15  |Mounting holes|M3
16 16  
17 17  == Headers ==
18 18  
19 -The location and designation of connectors on the BMS Main 3.0 device are shown below.
35 +The location and designation of connectors on the BMS Main 2R device are shown below.
20 20  
21 21  (% contenteditable="false" tabindex="-1" %)
22 22  (((
23 -[[image:1732119505664-787.png||data-xwiki-image-style-alignment="center" height="417" width="684"]]
39 +[[image:1774455018488-627.png||data-xwiki-image-style-alignment="center"]]
24 24  )))
25 25  
26 26  (% class="box warningmessage" %)
... ... @@ -29,195 +29,108 @@
29 29  All headers are shown from the device side!
30 30  )))
31 31  
32 -=== X1 – header to power the device ===
48 +=== X1 – header for discrete inputs and outputs ===
33 33  
50 +Receptacle Housing: Hirose ZE05-8DS-HU/R. Terminals: Hirose ZE05-2022SCF
51 +
34 34  (% class="wikigeneratedid" id="H" %)
35 -(% data-widget="image" contenteditable="false" tabindex="-1" %)[[image:1732121673277-246.png||data-xwiki-image-style-alignment="center" height="85" width="200"]]
53 +[[image:1732198937514-731.png||data-xwiki-image-style-alignment="center" height="85" width="272"]]
36 36  
37 37  |**Pin**|**Name**|**Description**
38 -|**1–2, 5–6**|**GND**|Ground
39 -|**3**|**KEYRUN**|Power-on signal
40 -|**4**|**CHARGE_ON**|Power-on signal (battery charge requirement)
41 -|**7–8**|**VIN**|Power line (9-32V)
56 +|**1–8**|**GND**|Ground
57 +|**9**|**DO_1**|Discrete output 1 (+5V, 20mA)
58 +|**10**|**DO_2**|Discrete output 2 (+5V, 20mA)
59 +|**11**|**DO_3**|Discrete output 3 (+5V, 20mA)
60 +|**12**|**DO_4**|Discrete output 4 (+5V, 20mA)
61 +|**13**|**DI_4**|Discrete input 4 (“dry contact”, +5V)
62 +|**14**|**DI_3**|Discrete input 3 (“dry contact”, +5V)
63 +|**15**|**DI_2**|Discrete input 2 (“dry contact”, +5V)
64 +|**16**|**DI_1**|Discrete input 1 (“dry contact”, +5V)
42 42  
43 -Power supply connection diagram:
44 44  
45 -(% aria-label="1732120054870-496.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732120054870-496.png||data-xwiki-image-style-alignment="center" height="169" width="327"]]
46 46  
47 -=== X2 – header for contactors ===
68 +=== X2 – miniUSB connector ===
48 48  
49 -(% aria-label="1732121695049-411.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732121695049-411.png||data-xwiki-image-style-alignment="center" height="87" width="267"]](% title="Click and drag to resize" %)​
70 +The miniUSB connector is used to configure the parameters of the BMS Main 2R device.
50 50  
51 -|**Pin**|**Name**|**Description**
52 -|**1–4, 8–9**|**GND**|Ground
53 -|**5**|**CONT1_OUT**|Contactor control 1 (plus)
54 -|**6**|**CONT2_OUT**|Contactor control 2 (plus)
55 -|**7**|**CONT3_OUT**|Contactor control 3 (plus)
56 -|**10**|**CONT4_OUT**|Contactor control 4 (plus)
57 -|**11**|**CONT5_OUT**|Contactor control 5 (plus)
58 -|**12**|**CONT6_OUT**|Contactor control 6 (plus)
72 +=== (% title="Click and drag to resize" %)​(%%)X3 – (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)header for power supply(%%) ===
59 59  
60 - Contactor connection diagram:
74 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
61 61  
62 -(% aria-label="1732121755886-234.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732121755886-234.png||data-xwiki-image-style-alignment="center" height="82" width="260"]]
76 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
63 63  
64 -=== (% title="Click and drag to resize" %)​(%%)X3 – header for discrete inputs and outputs ===
65 -
66 -(% aria-label="1732121811285-182.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732121811285-182.png||data-xwiki-image-style-alignment="center" height="94" width="531"]]
67 -
68 68  |**Pin**|**Name**|**Description**
69 -|**1–8, 12, 16–17, 21**|**DIO_GND**|Ground of input and output signals
70 -|**9**|**DIN1_SIGNAL**|Discrete input 1 “dry contact” (+5 V)
71 -|**10**|**DIN2_SIGNAL**|Discrete input 2 “dry contact” (+5 V)
72 -|**11**|**DIN3_SIGNAL**|Discrete input 3 “dry contact” (+5 V)
73 -|**13**|**DIN4_SIGNAL**|Discrete input 4 “dry contact” (+5 V)
74 -|**14**|**DIN5_SIGNAL**|Discrete input 5 “dry contact” (+5 V)
75 -|**15**|**DIN6_SIGNAL**|Discrete input 6 “dry contact” (+5 V)
76 -|**18**|**DIN7_VIN**|Discrete input 7 (signal detection with voltage 9-32V)
77 -|**19**|**DIN8_VIN**|Discrete input 8 (signal detection with voltage 9-32V)
78 -|**20**|**DOUT1_OD**|Discrete output 1 “open drain” (60 V, 1A)
79 -|**22**|**DOUT2_OD**|Discrete output 2 “open drain” (60 V, 1A)
80 -|**23**|**DOUT3_OD**|Discrete output 3 “open drain” (60 V, 1A)
81 -|**24**|**DOUT4_OD**|Discrete output 4 “open drain” (60 V, 1A)
79 +|**1**|**GND**|Ground
80 +|**2**|**V+**|Supply voltage (9-32V)
82 82  
83 -Connection diagram of a discrete input to a dry contact output:
84 84  
85 -(% aria-label="1732121887401-555.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732121887401-555.png||data-xwiki-image-style-alignment="center" height="63" width="196"]](% title="Click and drag to resize" %)​(%%)Connection diagram of a discrete input to an open collector output:
86 86  
87 -(% aria-label="1732122137116-973.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732122137116-973.png||data-xwiki-image-style-alignment="center" height="100" width="274"]](% title="Click and drag to resize" %)​(%%)Connection diagram for a discrete input for detecting a 9-32V signal:
84 +=== X4, X5, X6, X7 – header of relay 1, 2, 3 and 4 ===
88 88  
89 -(% aria-label="1732121926812-202.png image widget" data-widget="image" contenteditable="false" role="region" tabindex="-1" %)[[image:1732121926812-202.png||data-xwiki-image-style-alignment="center" height="76" width="242"]](% title="Click and drag to resize" %)​(%%)Connection diagram for discrete output:
86 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
90 90  
91 -=== X4 – header for HVIL ===
88 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
92 92  
93 -[[image:1732122015188-642.png||data-xwiki-image-style-alignment="center" height="64" width="150"]]
94 -
95 95  |**Pin**|**Name**|**Description**
96 -|**1**|**-**|Not used
97 -|**2**|**HVIL_OUT**|Output of the current measurement circuit in the current loop (lower potential, measuring shunt output)
98 -|**3**|**HVIL_IN**|Input of the current measurement circuit in the current loop (higher potential, measuring shunt input)
99 -|**4**|**HVIL_PWR**|Current loop power supply (max 5V, 25mA)
91 +|**1**|**V+**|Switching voltage (up to 55V, max 3A)
92 +|**2**|**NO**|Normally open contact
100 100  
101 - If the BMS Main 3 device generates current in a current loop, the current loop must be connected to the **HVIL_PWR** and **HVIL_IN** pins. If BMS Main 3 is a passive current loop meter, then the current loop must be connected to the **HVIL_IN** and **HVIL_OUT** pins.
94 +Contactor connection example for all relays:
102 102  
103 -Connection diagram to the current loop:
96 +[[image:1774456661980-866.png||data-xwiki-image-style-alignment="center" height="211" width="282"]]
104 104  
105 -=== X5 – header for current and temperature sensors ===
106 106  
107 -[[image:1733311958053-469.png||data-xwiki-image-style-alignment="center" height="83" width="349"]]
99 +=== X8 – header for current sensor 1 ===
108 108  
109 -(% style="width:539px" %)
110 -|**Pin**|**Name**|(% style="width:402px" %)**Description**
111 -|**1**|**CS1_5V**|(% style="width:402px" %)Current sensor 1 power line (5 V, max 50 mA)
112 -|**2–6**|**GND**|(% style="width:402px" %)Ground
113 -|**7**|**CS1_IN1**|(% style="width:402px" %)Current sensor 1 signal line (for a dual-range current sensor, High range output)
114 -|**8**|**CS1_REF_IN2**|(% style="width:402px" %)Current sensor 1 reference voltage signal line (for a dual-range current sensor, Low range output)
115 -|**9**|**CS2_5V**|(% style="width:402px" %)Current sensor 2 power line (5 V, max 50 mA)
116 -|**10**|**CS2_IN1**|(% style="width:402px" %)Current sensor 2 signal line (for a dual-range current sensor, High range output)
117 -|**11**|**CS2_REF_IN2**|(% style="width:402px" %)Current sensor 2 reference voltage signal line (for a dual-range current sensor, Low range output)
118 -|**12**|**CS3_5V**|(% style="width:402px" %)Current sensor 3 power line (5 V, max 50 mA)
119 -|**13**|**CS3_IN1**|(% style="width:402px" %)Current sensor 3 signal line (for a dual-range current sensor, High range output)
120 -|**14**|**CS3_REF_IN2**|(% style="width:402px" %)Current sensor 3 reference voltage signal line (for a dual-range current sensor, Low range output)
121 -|**15**|**TEMP1**|(% style="width:402px" %)Temperature sensor 1 signal line (NTC-thermistor 100 kOhm)
122 -|**16**|**TEMP2**|(% style="width:402px" %)Temperature sensor 2 signal line (NTC-thermistor 100 kOhm)
101 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
123 123  
124 -Current sensor connection diagram (using the example of LEM HASS 100-S):
103 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
125 125  
126 -[[image:1733316158040-285.png||data-xwiki-image-style-alignment="center" height="170" width="412"]]
127 -
128 -Current sensor connection diagram (using the example of LEM DHAB S/118):
129 -
130 -[[image:1733316170709-142.png||data-xwiki-image-style-alignment="center" height="171" width="413"]]
131 -
132 -NTC-thermistor connection diagram:
133 -
134 -[[image:1733316189878-329.png||data-xwiki-image-style-alignment="center" height="130" width="260"]]
135 -
136 -=== X6 – header for CAN1 and RS-485-1 (external buses) ===
137 -
138 -[[image:1733316218666-814.png||data-xwiki-image-style-alignment="center" height="55" width="162"]]
139 -
140 140  |**Pin**|**Name**|**Description**
141 -|**1**|**CAN1_H**|CAN1 line H for communication with external equipment
142 -|**2**|**CAN1_L**|CAN1 line L for communication with external equipment
143 -|**3**|**CAN1_RS485_1_GND**|Ground of CAN1 and RS-485-1
144 -|**4**|**RS485_1_A**|RS-485-1 line A for communication with external equipment
145 -|**5**|**RS485_1_B**|RS-485-1 line B for communication with external equipment
106 +|**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
107 +|**2**|**GND**|Ground
108 +|**3**|**CS1_OUT**|Current sensor 1 output
109 +|**4**|**CS1_REF**|Current sensor 1 reference signal
146 146  
147 -Connection diagram to the CAN1 bus:
111 +=== X9 – (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)header for current sensor 2(%%) ===
148 148  
149 -[[image:1733316241362-843.png||data-xwiki-image-style-alignment="center" height="153" width="410"]]
113 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
150 150  
151 -Connection diagram to the RS-485-1 bus:
115 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
152 152  
153 -[[image:1733316483336-290.png||data-xwiki-image-style-alignment="center" height="152" width="417"]]
154 -
155 -=== X7 – header for CAN2 (internal bus) ===
156 -
157 -[[image:1733316517741-698.png||data-xwiki-image-style-alignment="center" height="59" width="144"]]
158 -
159 159  |**Pin**|**Name**|**Description**
160 -|**1**|**CAN2_H**|CAN2 line H for communication with BMS devices
161 -|**2**|**CAN2_L**|CAN2 line L for communication with BMS devices
162 -|**3**|**GND**|Ground
163 -|**4**|**CAN2_5V**|CAN2 power line (5 V, max 400 mA)
118 +|**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
119 +|**2**|**GND**|Ground
120 +|**3**|**CS2_OUT**|Current sensor 2 output
121 +|**4**|**CS2_REF**|Current sensor 2 reference signal
164 164  
165 -Connection diagram to the CAN2 bus (using the example of connecting BMS Display 1.2):
123 +=== X10 – (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)header for temperature sensors(%%) ===
166 166  
167 -[[image:1733316563149-458.png||data-xwiki-image-style-alignment="center" height="158" width="392"]]
125 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
168 168  
169 -=== X8 – header for CAN3 ===
127 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
170 170  
171 -[[image:1733316517741-698.png||data-xwiki-image-style-alignment="center" height="59" width="144"]]
172 -
173 173  |**Pin**|**Name**|**Description**
174 -|**1**|**CAN3_H**|CAN3 line H for communication with battery modules (for BMS Main 3X)
175 -|**2**|**CAN3_L**|CAN3 line L for communication with battery modules (for BMS Main 3X)
176 -|**3**|**GND**|Ground
177 -|**4**|**CAN3_5V**|CAN3 power line (5 V, max 400 mA)
130 +|**1, 2**|**GND**|Ground
131 +|**3**|**T_SENS1**|Temperature sensor 1 output
132 +|**4**|**T_SENS2**|Temperature sensor 2 output
178 178  
179 -(% class="box infomessage" %)
180 -(((
181 -If the BMS Main 3 device acts as a controller for a battery system consisting of several battery modules connected in parallel, then the parallel battery BMS must be connected to the CAN3 bus.
182 -)))
134 +=== X11 – (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)header for BMS Logic(%%) ===
183 183  
184 -Diagram for connecting battery modules to the CAN3 bus:
136 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
185 185  
186 -[[image:1733316622613-181.png||data-xwiki-image-style-alignment="center" height="153" width="417"]]
138 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
187 187  
188 -=== X9 – header for BMS Logic (RS-485-2) ===
189 -
190 -[[image:1733316517741-698.png||data-xwiki-image-style-alignment="center" height="59" width="144"]]
191 -
192 192  |**Pin**|**Name**|**Description**
193 -|**1**|**LOGIC_B**|RS-485 line B for communication with BMS Logic
194 -|**2**|**LOGIC_A**|RS-485 line A for communication with BMS Logic
195 -|**3**|**GND**|Ground
196 -|**4**|**LOGIC_5V**|BMS Logic power line (+5V, max 400mA)
141 +|**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
142 +|**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
143 +|**3**|**+5V**|Supply voltage for BMS Logic
144 +|**4**|**GND**|Ground
197 197  
198 -Connection diagram for BMS Logic devices:
199 -
200 -[[image:1733316674363-604.png||data-xwiki-image-style-alignment="center" height="163" width="400"]]
201 -
202 -=== X10 – miniUSB connector ===
203 -
204 -The miniUSB connector is used to configure the parameters of the BMS Main 3.0 device.
205 -
206 -=== X11 – header for high-voltage bus before contactors (plus) ===
207 -
208 -[[image:1733316780753-798.png||data-xwiki-image-style-alignment="center" height="60" width="91"]]
209 -
210 -|**Pin**|**Name**|**Description**
211 -|**1**|**IN1+**|Plus of the high-voltage bus (before contactors)
212 -|**2**|**IN1+**|Plus of the high-voltage bus (before contactors)
213 -
214 -(% class="box warningmessage" %)
215 -(((
216 -The connected voltage must not exceed 1000V.
217 -)))
218 -
219 219  === X12 – header for high-voltage bus before contactors (minus) ===
220 220  
148 +Receptacle Housing: Molex 436450200. Terminals: Molex 43030
149 +
221 221  [[image:1733316843397-336.png||data-xwiki-image-style-alignment="center" height="53" width="79"]]
222 222  
223 223  |**Pin**|**Name**|**Description**
... ... @@ -231,6 +231,8 @@
231 231  
232 232  === X13 – header for high-voltage bus after contactors (plus) ===
233 233  
163 +Receptacle Housing: Molex 436450200. Terminals: Molex 43030
164 +
234 234  [[image:1733316780753-798.png||data-xwiki-image-style-alignment="center" height="60" width="91"]]
235 235  
236 236  |**Pin**|**Name**|**Description**
... ... @@ -244,6 +244,8 @@
244 244  
245 245  === X14 – header for high-voltage bus after contactors (minus) ===
246 246  
178 +Receptacle Housing: Molex 436450200. Terminals: Molex 43030
179 +
247 247  [[image:1733316843397-336.png||data-xwiki-image-style-alignment="center" height="53" width="79"]]
248 248  
249 249  |**Pin**|**Name**|**Description**
... ... @@ -285,7 +285,7 @@
285 285  
286 286  === J5, J6 – jumpers for emergency opening of contactors when removing discrete input signals DIN7, DIN8 ===
287 287  
288 -The BMS Main 3 device implements a circuit for hardware opening of power contactors when the discrete input signal DIN7 and/or DIN8 (voltage level 9-32V) is removed. To enable this function, jumper J5 and/or J6 must be installed.
221 +The BMS Main 2R device implements a circuit for hardware opening of power contactors when the discrete input signal DIN7 and/or DIN8 (voltage level 9-32V) is removed. To enable this function, jumper J5 and/or J6 must be installed.
289 289  
290 290  == Indicators ==
291 291  
... ... @@ -301,17 +301,19 @@
301 301  |**Blinking green**|Executing the battery management program
302 302  |**No blinking**|Program execution error
303 303  
304 -=== DS3 – LED indicating interaction with BMS Logic ===
237 +=== DS3 – LED indicating interaction with child devices ===
305 305  
306 -|**State**|**Description**
307 -|**Blinking yellow**|The device interacts with BMS Logic devices
308 -|**No blinking**|-
239 +(% style="width:447px" %)
240 +|**State**|(% style="width:166px" %)**Description (Main 3)**|(% style="width:168px" %)**Description (Main 3X)**
241 +|**Blinking yellow**|(% style="width:166px" %)The device interacts with BMS Logic devices|(% style="width:168px" %)The device interacts with BMS Main 3 devices
242 +|**No blinking**|(% style="width:166px" %)-|(% style="width:168px" %)-
309 309  
310 -=== DS4 – LED indicating loss of connection with BMS Logic ===
244 +=== DS4 – LED indicating loss of connection with child devices ===
311 311  
312 -|**State**|**Description**
313 -|**Blinking/lights up red**|Communication with one or more BMS Logic devices is lost
314 -|**No blinking**|Communication with BMS Logic is stable
246 +(% style="width:601px" %)
247 +|**State**|(% style="width:220px" %)**Description (Main 3)**|(% style="width:218px" %)**Description (Main 3X)**
248 +|**Blinking/lights up red**|(% style="width:220px" %)Communication with one or more BMS Logic devices is lost|(% style="width:218px" %)Communication with one or more BMS Main 3 devices is lost
249 +|**No blinking**|(% style="width:220px" %)Communication with BMS Logic devices is stable|(% style="width:218px" %)Communication with BMS Main 3 devices is stable
315 315  
316 316  === DS5-DS10 – LEDs indicating contactor switches 1-6 ===
317 317  
... ... @@ -327,11 +327,6 @@
327 327  
328 328  == Connection procedure ==
329 329  
330 -(% class="box warningmessage" %)
331 -(((
332 -Before connection, configure the device (see [[3. Settings>>doc:Battery management systems.BMS Main 3.3\. Settings.WebHome]]). Correct operation of the BMS system is only possible with correct configuration.
333 -)))
334 -
335 335  All operations to connect the device must be carried out with the supply voltage removed.
336 336  
337 337  * Connect the power contactors to header X2.
... ... @@ -342,5 +342,5 @@
342 342  * Connect the high-voltage network integrity circuit (if necessary) to header X4.
343 343  * Connect external devices (if necessary) to header X6.
344 344  * Connect other devices (BMS Indication, BMS Display, if necessary) to header X7.
345 -* If the BMS Main 3.0 is the last device on the RS-485-1, CAN1, or CAN2 bus, install jumpers J1-J3.
275 +* If the BMS Main 2R is the last device on the RS-485-1, CAN1, or CAN2 bus, install jumpers J1-J3.
346 346  * Connect an external power supply to header X1. The device will start when there is a 9-32V power supply and one of the KEYRUN or CHARGE_ON signals with a voltage of more than 8.5V is supplied.
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