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6.1.1
Analog inputs (AI)
Analog inputs (AIs) on XSeries
different measurement and operating ranges. Typical external devices include measurement
transmitters such as pressure and temperature transmitters. These devices convert measured values
into electrical signals which are then read and detected by the AI.
Each AI is capable of handling voltage or current inputs. The table below describes the AI input mode
and range supported per device type. The AI ranges are compatible with the output signal ranges of
common external devices (1-5 Vdc and 4-20mA).
Table 6-2: XSeries
G5
Analog input (AI) mode and range
AI feature
Input Mode
Supported
(Signal type)
Input value
range
6.1.2
Digital or Pulse Inputs (DI/PI)
Digital or pulse inputs (DI/PIs) on XSeries
DIs and PIs are supported on the same terminals:
Digital inputs can read an external contact. This is primarily used as a status input to read
external equipment. This contact must be closed to be considered on. The on condition is
recorded in the log period alarms and can trigger the action of the flow computer's digital
voltage (12 Vdc) output is off is defined as an open contact.
The Pulse input is a hardware event counter that accumulates the number of OPEN to CLOSE
transitions that occur on the DI input.
6.1.2.1
Selectable Pulse Input
The XSeries
G5
devices support selectable pulse input operation. This can be set with the onboard
IEC/STD switch. This switch selects the electrical voltage threshold point which defines when a DI
state is either OPEN or CLOSED.
IMPORTANT NOTE:
output.
6.1.2.2
Debounce
XSeries
G5
pulse inputs support debounce capability. When debounce is enabled (turned on) the slew
rate of the signal is slower to remove the mechanical-switching chatter associated with mechanical
switches. Therefore, debounce should not be enabled for high-speed pulses.
The table below describes the pulse input and debounce capabilities per device type.
Table 6-3: XSeries
G5
pulse input mode and debounce capabilities
PI
Selectable
mode
5 0 | XSE RI ES G5 | 2 10 6 02 6MNAA
G5
devices support the monitoring of a variety of external devices with
XFC
G5
Voltage
The AI native mode is voltage only,
but the AI can be set to current mode
by externally inserting a precision
resistor across the AI pins on the
selected port. A common resistor
value is 250 ohms.
Voltage mode: 0-5 Vdc
Current mode: 0-20 mA
G5
devices support the monitoring of external devices. Both
The IEC mode supports the ABB Coriolis Master primary meter's high-speed pulse
XFC
G5
Yes, hardware selectable with onboard
IEC/STD switches: S3, S4
XRC
G5
Voltage and current,
Mode selectable with onboard pins
(J21, J22, J24, J25, J26):
Voltage mode (default): Jumper pins
2-3
Current mode: Jumper pins 1 and 2
Voltage Mode: 0-10 Vdc
Current Mode: 0-20 mA
XRC
G5
Yes, hardware selectable with
onboard IEC/STD switches: S3, S4,
S7, S8
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