National Instruments FP-Al-110 用户手册
FP-AI-110 and cFP-AI-110
6
ni.com
Figure 5 shows how to connect a voltage source with an external
power supply to one channel of the [c]FP-AI-110.
power supply to one channel of the [c]FP-AI-110.
Figure 5. Voltage Source with External Power Supply
Measuring Current with the [c]FP-AI-110
The input ranges for current sources are 0–20, 4–20, and
±20 mA.
The module reads current flowing into the I
IN
terminal as positive
and current flowing out of the terminal as negative. Current flows
into the I
into the I
IN
terminal, goes through a 100
Ω resistor, and flows out
from the COM or C terminal.
Figure 6 shows how to connect a current source without an external
power supply to one channel of the [c]FP-AI-110.
power supply to one channel of the [c]FP-AI-110.
V
SUP
V
IN
V
C
To Analog
Input Circuitry
To Next Channel
COM
[c]FP-AI-110
I
IN
Powered
Voltage
Transducer
OUT
+
–
+
–
10–30 VDC
External
Power Supply
(Optional)
2 A
Max
1 A
Max