REC ACTIVE BMS 4S
4
www.rec-bms.com
Table 2:
BMS unit male socket connections.
connection
description
1
Charge Relay
Normally closed
2
Charge Relay
Fused input
3
Discharge Relay
Normally closed
4
Discharge Relay
Normally open
5
Discharge Relay
Fused input
6
Hibernate switch signal
-
7
Hibernate switch ground
-
8
Cell 4
po
Analog signal
9
Cell 3
po
Analog signal
10
Cell 2
po
Analog signal
11
Cell 1
po
Analog signal
12
Cell 1
ground -
Analog signal
13
Charge Relay
Normally open
14
Optocoupler charge collector
-
15
Optocoupler charge emitter (darl reverse
protection diode + polyfuse)
-
16
Optocoupler discharge collector
-
17
Optocoupler discharge emitter (darl
reverse protection diode + polyfuse)
-
18
CAN Vcc
4 V output from the
19
CANL
-
20
RS485 Vcc
-
21
RS485 A
-
22
RS485 ground
-
23
RS485 B
-
24
Shunt-
System ground
25
Shunt+
Cell 1 ground
26
-
-
27
Dallas 18B20 temp. sensor
GND + shield
28
Dallas 18B20 temp. sensor
+ 5 V
29
Dallas 18B20 temp. sensor
1-wire digital signal
30
CANH
-
31
CAN ground
GND potential of the battery pack
32
-
-
33
Address pin 3
Normally 0, connect to pin 35 to
change to 1
34
Address pin 2
Normally 0, connect to pin 35 to
change to 1
35
Address pin ground
Fused ground for Address pins