Emerson FB2100 Flow Computer Instruction Manual
D301783X012
March 2019
I/O Configuration and Wiring
63
Table 3-2. Analog Output Characteristics
Type
Number Supported
Characteristics
Analog
Output
(AO)
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.
▪
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
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
Field Device
2
Power Supply 30Vdc Max
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:
Содержание FB2100
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