Emerson FB3000, Instruction Manual

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Emerson FB3000 RTU Instruction Manual
D301851X012
May 2022
38 I/O Configuration and Wiring
Alternatively, you can use loop power as shown in Figure 3-2 . In the figure, AIDIPI_08 is
shown connected to an external current source.
The current source is powered by the 24V loop supply which can power up to 8 field
devices (4-20mA or 1-5V). To create the correct ground reference, connect the 24V loop
GND (pin 20) externally to ISOGND (in this case pin 10).
Figure 3-2: Analog Input (AI) Wiring Using Loop Power
1 External current source
3.2 Analog Outputs
The FB3000’s mixed I/O modules includes two dedicated analog output channels, with
the following characteristics:
Table 3-3: Analog Output Characteristics
Type Number Supported Characteristics
Analog Output
(AO) 2 dedicated channels  4 to 20 mA range (or 1 to 5V)
selectable within FBxConnect.

Both analog outputs share a common
ground.
 You disable unused analog outputs to
conserve power.