You can control how long it takes the Trex unit to change from sourcing one current value to another. Select a higher value to gradually change the current and avoid abrupt changes to a valve's position that may damage equipment. Select a value of zero to quickly move a valve.
This option applies to the quick current buttons, the up and down arrow keys, and the pencil icon that enable you to enter a new current value. It also applies when you tap Trex Unit Power to stop powering the positioner.
Note: This option does not apply to the initial current value that is
applied when you first power the device. For example, if you power a device,
the Loop Diagnostics application will immediately source 4 mA, 20 mA, or the mA
value you entered. The delay applies to any change to the current value after
initial start up.