Instruction Manual
D103785X012
Configuration
June 2017
37
Outputs
Field Communicator
Configure > Manual Setup > Outputs (2-2-6) HC, AD, PD or (2-2-7) ODV
Note
These menu items are only available on units that have the optional 420 mA position transmitter or switch hardware installed.
Output Terminal Configuration
D
Output Terminal Enable
—If using the optional output terminal for a Position Transmitter or Switch output, this must
be Enabled.
D
Function
—The output terminals can be configured as one of the following:
Transmitter
- 420 mA output that represents 0100% of the calibrated valve travel.
Limit Switch
- Discrete switch (1 A max) that trips at a configurable point within 0100% of calibrated valve travel.
Alert Switch
- Discrete switch (1 A max) that trips based on a configurable device alert.
D
Fail Signal
—Should the output circuit fail to operate properly, the output will attempt to drive to a known state.
Depending on the nature of the failure, the circuit may or may not be able to achieve this fail state. When
configured as a transmitter, the output can be configured to fail low (< 3.6 mA). The output can be configured to fail
high (> 22.5 mA) when the positioner is powered. When configured as a switch, the output can be configured to
drive Closed or Open.
Note
On loss of positioner power, the switch circuit will always go to the open state.
Switch Configuration
D
Limit Switch Trip Point—
When the function is configured as a Limit Switch, the Limit Switch Trip Point defines the
threshold for the limit switch in percent of calibrated travel.
D
Alert Switch Source—
When the function is configured as an Alert Switch, the Alert Switch Source determines which
alert will activate the switch. The alert choices are: Travel Deviation or Pressure Fallback.
D
Switch Closed—
Configures the action of the switch. The choices are: Below Trip Point / Alert Not Active or Above
Trip Point / Alert Active.
