FP-AIO-600 and cFP-AIO-600
8
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Figure 8 shows how to connect a current source with an external
power supply to one input channel of the [c]FP-AIO-600.
Figure 8.
Current Input with an External Power Supply
Input Ranges
To prevent inaccurate readings, select an input range such that the
signal you are measuring does not exceed either end of the range.
Overranging
The [c]FP-AIO-600 has an overranging feature that measures 20%
beyond the nominal values of each range. For example, the actual
measurement limit of the
5 V range is
6.0 V. The overranging
feature enables the [c]FP-AIO-600 to compensate for field devices
with span errors of up to 20% of full scale. Also, the overranging
feature helps prevent errors caused by clipping.
Connecting the [c]FP-AIO-600 to a Load
The [c]FP-AIO-600 has four single-ended current output channels
that
source
current from a 10–30 VDC, 125 mA external power
supply. Sourcing current means that current flows out of the I
OUT
terminal into the load. All four output channels and their common
are isolated from the other modules in the FieldPoint system. The
four output channels are not isolated from the four input channels.
+
–
V
C
10–30 VDC
External
Power Supply
V
SUP
V
IN
COM
[c]FP-AIO-600
Loop-
Powered
Current
Transmitter
I
IN
To Analog
Input Circuitry
To Next Channel
2 A
Max
63 mA
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