Calculating Power For A Fieldpoint Bank - National Instruments FieldPoint FP-2000 User Manual

Chapter 2 Installing the Hardware and Software
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different voltage potentials.

Calculating Power for a FieldPoint Bank

FP-2000/2010/2015 User Manual
for power requirement details. You can power a module by connecting
the V and C inputs on its terminal base to a separate power supply,
connecting the V and C outputs of a neighboring terminal base or
network module, or using a combination of both methods. If you want
to power field I/O devices from a terminal base, supply power to the
terminal base, and then connect the terminal base V and C output
terminals to the field device.
Figure 2-2 shows an example of a FieldPoint system correctly wired to
power sources.
Separate Power Supply
(Recommended)
Cascaded Power
(Reduces Isolation)
FP-2000 FP-AI-100
Figure 2-2. FieldPoint Bank with Power Connections
The power requirements for a FieldPoint bank that uses an FP-20xx
network module are calculated as follows:
Power = 4.5 W + 1.1 * ∑(I/O Module Consumption)
This is the amount of power the FP-20xx 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.
No External
Power Required
FP-AO-200 FP-RLY-420
V 1
15 16 V 2 3
CAUTION: Cascading
31 32 C
C 17 18
power defeats isolation.
2-14
FP-TC-120
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