Contactors / -V Power (Connector J6) - Nuvation Energy NUV300-BC-12 Product Manual

4.2.7. Contactors / -V Power (Connector J6)

Figure 22. Contactor 3-coil and -VPower cable (NUVW-B12Z03-005)
This interface is used to drive up to 4 external contactor coils, as well as select their power source.
The negative operating power is also provided in a fused connection to this connector (see
4.2.3).
Table 5. Contactors / -V Power Connector Pin Assignment
Pin Connection
1 COM
2 COM
3 COM
4 COM
5 VCOIL_RETURN
6 -VPOWER
7 COIL1_HI
8 COIL2_HI
9 COIL3_HI
10 COIL4_HI
11 +VCOIL
12 +24V
The Low-Voltage BMS provides coil drivers for contactor coils up to 24 V DC. The internal 24 V power
supply of the Low-Voltage BMS may be used to power the coils if the following conditions are
satisfied:
▪
24 V coils are connected
▪
The worst-case coil inrush current is below 1.5 A
▪
The sum of all connected coil currents is less than 1 A
To use the internal power supply, connect together pins 11 (+VCOIL) and 12 (+24V) to deliver +24 V DC
to the +VCOIL input. Pin 5 (VCOIL_RETURN) is left disconnected and should be insulated to prevent shorts.
Document ID: NE-PM-002
Description
Negative Coil 1
Negative Coil 2
Negative Coil 3
Negative Coil 4
Negative reference for external supply
Power return of Low-Voltage BMS
Positive Coil 1
Positive Coil 2
Positive Coil 3
Positive Coil 4
12-24V Contactor Coil Power Supply
Internal Power Supply
31
Nuvation Energy Low-Voltage BMS - Product Manual
Connected to Device
Contactor 1 negative coil connection
Contactor 2 negative coil connection
Contactor 3 negative coil connection
Contactor 4 negative coil connection
External Power Supply. Refer to
and Figure 11
Bottom of Stack
Contactor 1 positive coil connection
Contactor 2 positive coil connection
Contactor 3 positive coil connection
Contactor 4 positive coil connection
Connect to external power supply, or to
pin 12 if driving contactor coil from
internal power supply
Connect to pin 11 if driving contactor coils
from internal power supply
Section
Figure 7
for additional requirements
Rev 1.2, 2021-03-03
Curie Update 1