Emerson FB3000 User Manual

FB3000 RTU Instruction Manual
D301851X012
November 2023
48 I/O Configuration and Wiring
 Current is positive (+) when it enters a current loop device and negative (–) when it
leaves a current loop device.
3.1 12-Channel Mixed I/O Module Configuration
(3MIX12/3MSG12/MIO12)
The FB3000 RTU supports a twelve-channel mixed I/O module which includes two analog
output channels, two digital output channels, and eight channels you can individually
configure as either analog inputs (AI), digital inputs (DI) or pulse inputs (PI).
3.1.1 Analog Inputs (3MIX12/3MSG12)
The 12-channel mixed I/O module includes eight channels you can individually configure
as either analog inputs (AI), digital inputs (DI) or pulse inputs (PI).
Note
No external resistor is required to interface with a current (4-20 mA) device. To convert a
current to a voltage to be read by the hardware analog to digital converter, when you
configure the AI for current within FBxConnect, the device enables a 250 ohm resistor
across the channel input.
When configured as analog inputs, the channels have the following characteristics:
Table 3-2. Analog Input Characteristics (12- Channel Mixed I/O Module0
Type
Number
Supported
Characteristics
Analog
Input (AI)
Any of
AIDIPI_01
through
AIDIPI_08 can
be individually
configured as
analog inputs.

4 to 20 mA range (or 1 to 5V) selectable within
FBxConnect.
 Ana
log inputs share a common ground.
 When you configure a channel as an AI it cannot be
used as a DI or PI
If current requirements are less than 200 mA @ 24V,
you can power using 24V loop supply.
Figure 3-1 shows how to wire the analog input using either 1-5V or 4-20mA.
In the figure, AIDIPI_01 is configured as a voltage input and is shown connected to an
external voltage source.

Emerson FB3000 Specifications

General

Brand	Emerson
Model	FB3000
Category	Touch terminals
Language	English