Pulse Inputs - Emerson FB2200 Instruction Manual

3.5

Pulse Inputs

Depending upon how you ordered it, the FB2200 flow computer includes two, six, or ten channels
you can individually configure as either pulse inputs (PI), digital inputs (DI), or digital outputs (DO).
When configured as pulse inputs, the PI channels have the following characteristics:
Table 3-5. Pulse Input Characteristics
Type
Pulse
Inputs (PI)
I/O Configuration and Wiring
Number Supported
0 to 10 as follows:
▪ 1 or 2 non-isolated channels on CPU
module (DI/DO/PI1 and DI/DO/PI2).
Two are always present; you can
configure one, both, or neither as PIs.
▪ 1 to 4 additional isolated channels on
optional 8-channel expansion I/O
module (ISO DI/DO/PI3 to ISO
DI/DO/PI6). If module is present you
can configure one, two, three, four, or
none of the channels as PIs.
▪ 1 to 4 additional isolated channels on
optional 6-channel expansion I/O
module (ISO DI/DO/PI7 to ISO
DI/DO/PI10). If module is present you
can configure one, two, three, four, or
none of the channels as PIs. This
module is allowed only if 8-channel
expansion I/O module is also present.
Emerson FB2200 Flow Computer Instruction Manual
Characteristics
Supports dry contacts and open
▪
collector outputs connected to
ground and voltage inputs
Supports single pulse for volume or
▪
mass
Input filtering selectable at 30  s or 1
▪
ms
▪ Frequency range from 0 to 10.5 KHz
▪ Maximum input frequency for the 1
ms filter is 300 Hz
▪ On when greater than 3.0V; off when
less than 2.0V
▪ When you configure a channel as a PI
it cannot be used as a DI or DO
channel
D301784X012
March 2019
75