National Instruments FP-3000 - Manual (Page 30)

Chapter 2 Installation and Configuration
FieldPoint FP-3000 User Manual 2-12 www.ni.com
Calculating Power for a FieldPoint Bank
The power requirements for a FieldPoint bank that uses an FP-3000
network module are calculated as follows:
Power = 6 watts + 1.15 *
∑(I/O Module Consumption)
This is the amount of power the network module consumes from the power
supply to power itself and the I/O modules. It does not include any power
consumed by devices that you wire to the terminal bases.
The power requirement for the FP-3000 network module alone (no
connected I/O modules) is 6 Watts. The power requirement of each I/O
module is listed in the catalog and in the Operating Instructions pamphlet
for that module. Add the I/O modules’ requirements and multiply by 1.15
(to account for the power requirements of the terminal bases). If you are
using a separate power supply for outputs, the third term in the calculation
for the primary power supply’s requirements will be zero.
Power Connections
Note You need to connect the FP-3000 to the network before applying power.
An 11–30 VDC power supply is required by each FP-3000 on your
network. The FP-3000 filters and regulates this supplied power and
provides power for all the I/O modules in the bank. Therefore, you do not
need to provide power separately to each FieldPoint I/O module in
the bank. As discussed in the section
Supplying Power for Outputs , you
will need to select a method for powering any output circuitry on output
modules.
The power connector is a 6-pin screw terminal power connector whose
pinout is shown in Figure 2-8. See Figure 2-6 for the location of the power
connector.