R
EVISED
2017-09-11
H
ARDWARE
I
NSTALLATION
D
RAWING
N
O
. LP0987-D
P
OWER
S
OURCE
2-94
N-Tron
®
Series NT24k
®
Compact Hardware Manual
PoE
Compact
Models
‐
DC
Power
Supply
Installation
•
NT24k models that support PoE functionality are designed with special terminal blocks with push-in direct plug-
in technology that support solid (or stranded with ferrules) wire for ease of installation.
•
Use 12-14 gauge solid or stranded wire when connecting to the VDC power supply.
1.
Strip back the ends of the wire 0.4".
2.
Insert the positive wire from the DC power supply into the V1+ circular opening on the power connector by
firmly pushing it into the terminal block.
3.
Insert the negative wire from the DC power supply into the V1- circular opening on the power connector by
firmly pushing it into the terminal block.
4.
For redundant inputs, repeat the above steps by inserting the positive/negative wires into the V2+, V2-
circular openings on the power connector by firmly pushing them into the terminal block.
5.
Use 12-14 gauge solid or stranded wire to connect the Chassis Grounding point located near the power input
terminal to a known good ground.
6.
Verify that no exposed conductors are touching each other or the unit case before powering on the unit.
7.
Apply power to the unit and verify that the power LED stays on.
Note:
When a DC power supply is installed, only one power supply must be connected to power
for minimal operation. For redundant power operation, V1 and V2 inputs must be connected to
separate DC voltage sources. This device will draw current from the higher voltage source. The
NT24k can be configured to fault when either of the two supplies goes below a minimum voltage
threshold.
Note:
If stranded wire is not used with ferrules, the stranded wire must be tinned with solder.
