National Instruments FieldPoint FP-2000, User Manual, Page: 24 / 94

Chapter 2 Installing the Hardware and Software
© National Instruments Corporation 2-13 FP-2000/2010/2015 User Manual
Wiring Power to the FieldPoint System
Each FP-20 xx on your network requires an 11–30 VDC power supply.
The FP-20 xx filters and regulates the supplied power and provides power
for all the I/O modules in the bank. This power is sufficient for most
FieldPoint I/O modules. Refer to the documentation for the individual I/O
modules to determine whether they require any additional power in your
applications.
Figure 2-1 shows the 6-pin screw-terminal power connector on the
FP-20
xx .
Figure 2-1. FP-20 xx Power Connector Pinout
Follow these steps to connect power to the FieldPoint system:
1. Connect the primary power supply to the center V and C pair. You
can connect an optional backup power supply to the left V and C pair.
The FP-20
xx uses the power supply with the higher voltage level.
The V terminal for backup power is isolated from the other
V terminals. The right V and C pair provides a convenient means of
connecting power to the V and C terminals of a terminal base.
Figure 2-2 shows this optional connection, called
cascading power .
To verify that your power supply is sufficient for your modules and
devices, refer to the
Calculating Power for a FieldPoint Bank section
for instructions on calculating power requirements.
Caution
Cascading power defeats isolation between the cascaded modules.
2. Connect power to the FieldPoint modules that require external power
for inputs or outputs (may include output modules, counter modules,
PWM, PG, QUAD). Refer to the I/O module’s operating instructions
v
v
v
c c
c
11-30 VDC
Backup Power
Supply
(optional)
+
–
+
–
11-30 VDC
Primary Power
Supply
V
C
To adjacent device
(optional connection)