Input/Output - ABB AWT420 Operating Instruction

AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B

Input/Output

Menu
Input/Output
Exit Select
Menu
Comment
Analog Outputs The analog outputs can be configured to retransmit the process variable and temperature values and
have a configurable range from 0 to 22 mA.
HART Curr . Out
PV Range Hi
PV Range Lo
See Communications Supplement COM/AWT420/HART-EN.
Output Value
Failure Current
Analog Output 1 (to 4) Analog outputs 3 and 4 are available only if an option board is fitted – see page 13.
Source
Select the sensor signal to be assigned to the output.
Output Type See page <?>.
Elec High * The output characteristic is selectable dependent on sensor type.
Elec Low *
Eng High * Set the minimum and maximum electrical range output values within the range 0.00 to 22.00 mA.
Eng Low *
Output Failure * Set the minimum and maximum engineering range output values within the range of measurement
permitted by the sensor selected as the source.
Failure Current**
Select to enable/disable the output failure function.
When enabled, the current output can be driven to a preset value if a Failure category diagnostic
state occurs for the selected source – see page 34.
Calibrate
AOP1(4) Trim 4 mA
Adjust 4 mA (use the
AOP1(4) Trim 20 mA
Adjust 20 mA (use the
Digital I/O See page 13 for digital I/O connections.
Type Select the Digital I/O type:
• Off.
• Input.
• Output.
Source
Select the digital signal to be assigned to the input/output – see page <?>.
Polarity
Sets the polarity of the digital input/output signal – see Table 5, page 42.
Relays
Relay 1 (to 4)
Selects the digital signal to be assigned to the relay – see page <?>.
Source
Polarity
Sets the polarity of the relay output – see Table 6, page 42.
* Displayed only if Source is NOT set to None
** Displayed only if Output Failure is set to Enabled
Used to enable configuration of analog outputs, digital inputs and outputs and relays.
/ keys to set the mA reading to 4 mA).
/ keys to set the mA reading to 20 mA).
41
Default
None
Enabled
22.0
Off
None
Non Inverted
None
Non Inverted