Emerson FB2200 Flow Computer Instruction Manual
D301784X012
March 2019
66 I/O Configuration and Wiring
Note
No external resistor is required for a current (mA) device. You can apply a 250 ohm resistor using
analog input configuration selections in FBxConnect.
When configured as analog inputs, the channels have the following characteristics:
Table 3-1. Analog Input Characteristics
0 to 8 as follows:
▪
1 or 2 non-isolated channels on CPU
module (AI/AO1 and AI/AO2) always
present. You can configure one, both,
or neither as AIs.
▪
1, 2, 3, or 4 additional isolated
channels on optional 8-channel
expansion I/O module (ISO AI/AO3,
ISO AI/AO4, ISO AI/AO5, or ISO
AI/AO6). If module is present you can
configure any (or none) of the four
channels as AIs.
▪
1 or 2 additional isolated channels on
optional 6-channel expansion I/O
module (ISO AI/AO7 and ISO AI/AO8).
If module is present you can configure
one, both, or neither as AIs. This
module is allowed only if 8-channel
expansion I/O module is also present.
▪
4 to 20 mA range (@24Vdc), or 1 to
5Vdc
▪
Over range for calibration purposes:
3.2 to 20.8 mA or 0.8 to 5.2 Vdc
▪
AI1 and AI2 require external power
when in current mode only
▪
Factory calibrated (re-calibration is
unnecessary for at least 3 years)
▪
Signal conditioning
▪
When you configure a channel as an AI
it cannot be used as an AO
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