FP-AI-100 and cFP-AI-100
4
ni.com
Each channel has separate input terminals for voltage (V
in
) and
current (I
in
) input. Voltage and current inputs are referenced to the
COM terminals. If you are using an external supply to power field
devices, connect the power supply to the V and C terminals of the
terminal base or connector block. Refer to the sections that follow
for detailed wiring diagrams.
Caution
Do
not
connect both current and voltage inputs
to the same channel.
Caution
Cascading power between two modules defeats
isolation between those modules. Cascading power from
the network module defeats all isolation between
modules in the FieldPoint bank.
Taking Measurements
with the [c]FP-AI-100
The [c]FP-AI-100 has eight single-ended input channels. All eight
channels share a common ground reference that is isolated from
other modules in the FieldPoint system. Figure 3 shows the analog
input circuitry on one channel.
Table 1.
Terminal Assignments
Channel
Terminal Numbers
V
in
I
in
V
sup
COM
0
1
2
17
18
1
3
4
19
20
2
5
6
21
22
3
7
8
23
24
4
9
10
25
26
5
11
12
27
28
6
13
14
29
30
7
15
16
31
32
