Watlow F4T • 104 • Chapter 5 Function Reference
Ramp Action
Choose the conditions under which the loop ramps its set point. When the set point ramps, it
starts at the Process Value and changes gradually to the Set Point setting rather than abruptly
changing values.
Options:
• Off: the loop controls to the Set Point immediately
• Startup: each time the controller is powered up, the loop ramps the set point. At all
other times abrupt changes to the Set Point are allowed
• Set Point: upon powering up the Set Point immediately resumes its last value, but the
loop ramps the set point each time the Set Point is changed
• Both: the loop ramps the set point each time the controller is powered up or the Set
Point is changed
Ramp Scale
Choose the time units for the Ramp Rate parameter.
Options:
• Minutes
• Hours
Ramp Rate
Set how quickly the set point ramps. Set the time units for the rate with Ramp Scale.
Range: 0 to 99,999 ºF or units / minute or hour
0 to 55,555 ºC
Idle Set Point
Set a set point value that is triggered when an event signal to the IDLE receiver is active. See
Use Idle Set Point Active Level below.
Range: Minimum Set Point to Maximum Set Point
Use Idle Set Point Active Level
Choose the signal value at the IDLE receiver which causes the loop to use the Idle Set Point.
Options:
• High: the idle set point is used when the signal is on
• Low: the idle set point is used when the signal is off
Remote Set Point
Choose whether or not the loop controls at the remote set point. The remote set point is re-
ceived on the control loop’s RSP input.
Options:
• No: the loop does not use the remote set point for control
• Yes: the loop uses the remote set point for control
Note:
Either the Remote Set Point parameter or the REN input can cause the remote set point
to override the loop’s set point.
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