Instruction manual

Instruction Manual
D103605X012
Configuration
January 2015
33
Outputs
Field Communicator Configure > Manual Setup > Outputs (2-2-6) HC, AD, PD or (2-2-7) ODV
Output Terminal Configuration
Note
These menu items are only available on units that have the optional 420 mA position transmitter or switch hardware installed.
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 - 420mA output that represents 0100% of the calibrated valve travel.
Limit Switch - Discrete switch (1A max) that trips at a configurable point within 0100% of calibrated valve travel.
Alert Switch - Discrete switch (1A 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 drive high (22.5 mA) or low (3.6 mA). 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. However, on loss of positioner power, the
transmitter output will continue to operate as long as the transmitter circuit is still powered and functioning.
Switch Configuration
Note
Switch Configuration is only available on units that have the optional 420 mA position transmitter or switch hardware installed.
D Limit Switch Trip Point—When the function is configured as a Limit Switch, this defines the threshold for the limit
switch in percent of calibrated travel.
D Alert Switch Source—When the function is configured as a Alert Switch, this determines which alert will activate the
switch. The alert choices are: Travel Deviation or Pressure Fallback.
D Switch Closed—This configures the action of the switch. The choices are: Below Trip Point / Alert Not Active or
Above Trip Point / Alert Active.