Ao Wiring; Digital Inputs; Table 3-2. Analog Output Characteristics - Emerson FB2100 Instruction Manual

Table 3-2. Analog Output Characteristics

Type
Analog
Output
(AO)
3.2.1

AO Wiring

The diagram below shows how to wire the analog output.
Figure 3-3. Analog Output (AO) Wiring [AI/AO1 & AI/AO2] – (CPU Option 2)
1
2
3.3

Digital Inputs

The FB2100 flow computer with CPU option 2 includes two channels that you can individually
configure as digital inputs (DI), digital outputs (DO), or pulse inputs (PI).
When configured as digital inputs, the channels have the following characteristics:
I/O Configuration and Wiring
Number Supported
0 to 2 as follows under CPU option 2 only:
▪ 1 or 2 non-isolated channels on CPU
board (AI/AO1 and AI/AO2) always
present. You can configure one, both,
or neither as AOs. Note: If you
configure both as AOs we recommend
you provide isolation to avoid ground
loops which could affect readings.
Field Device
Power Supply 30Vdc Max
Emerson FB2100 Flow Computer Instruction Manual
Characteristics
▪ 4 to 20 mA range (@24Vdc)
▪ Externally powered (current mode only)
▪ AO sinks current to system ground
▪ Factory calibrated (re-calibration is
unnecessary for at least 3 years)
▪ You can configure a fail state so that on
power up or if the CPU fails the output
drives to 0 µA
When a channel is configured as an AO
▪
it cannot be used as an AI
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March 2019
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