Fan Control
This feature gives the ability for the Stack Switchgear to control external AC or DC fans for cooling
the battery cells. The fans are enabled by the BMS when battery cell temperatures exceed
configurable thresholds. The power source for the fans must be supplied to the Stack Switchgear. It
can be either AC or DC, depending on the fan selection for the system. This can be the same power
source used for powering the Stack Switchgear as described in
The signals are connected via feed-through connectors on the front panel, as shown in
. To
install a conductor, insert a tool (such as a small flat screwdriver) into the rectangular opening at the
top of the connector. This allows the conductor to freely enter into the circular opening at the bottom
of the connector. Remove the tool to secure the conductor in place. For stranded wires, the use of
ferrules is recommended.
An inline breaker provides the ability to turn off fan control for the Stack Switchgear. It also protects
the system by tripping if the amperage exceeds 5 A. For specifications of this input, see
.
For the breaker’s safety mechanism to work as expected, the fan control wiring must
also be rated to at least 5 A.
Table 8. Battery cooling fan control pinout
Pin
Name
Description
Connected to Device
AC
DC
Fan Input
1
G/-
Ground
Negative
External power source
2
N
Neutral
NC
External power source
3
L/+
Line
Positive
External power source
Fan Output
1
G/-
Ground
Negative
External fan system
2
N
Neutral
NC
External fan system
3
L/+
Line
Positive
External fan system
Nuvation Energy Stack Switchgear - Product Manual
Document ID: NE-PM-003
22
Rev 1.0, 2020-09-03
