West Control Solutions ProVU 4 - Manual (Page 68)

ProVU4 Controller, Profiler & Recorder/Controller - Product Manual
59407, Issue 1 – March 2008 Profiler Option Page 67
Profile Starting & Standard Segments
The example below shows two profiles containing examples of the standard segment types
required to make simple profiles or profile sequences. A Start Trigger is the instruction to
begin the selected profile. Depending on the Run/Hold Signal parameter setting in the Profile
Setup Menu, this can be from a Key-press given in the appropriate screen, a digital input
signal or via a serial communications command.
Following a Start Trigger, profiles can start immediately, after a delay, or from the Timer
(Timer start available on Recorder version only).
CAUTION:
A timer start time should not clash with other profiles. A profile will not start if
another is running, including delays caused by Manual or Auto-Hold.
PROFILE 1 PROFILE 9
Target Setpoint
Ramp (Time/Rate)
Starting Setpoint
Start
Trigger
Step
End
Timer or Delay Dwell Join (Profile 1 to Profile 9)
Figure 38. Profile Starting and Standard Segment Types
Ramps, Dwells and Step Segments have an end of segment Target Setpoint. If the 1 st
segment is a Ramp- Time, the slope needed to reach the target will be changed by the
Starting Setpoint value. For a Ramp-Rate segment, the time will change instead. A Dwell
(sometimes called a soak) holds the last segment’s value for the specified Dwell Time. Step
segments jump straight to the new target setpoint value.
If the last segment is a Join, the join target profile will start. Note: The profile sequence will
abort if the join target has been deleted. An End segment ends the profile sequence.