DCP200 Profile Controller & Recorder -Product Manual
Page 68 Profiler Option 51-52-25-150, Issue 1 –April 2009
Profile Starting & Standard Segments
The example profiles below contain 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. Remember that delays caused by manual holds or Auto-Hold
can effect when the previous running profile will finish.
PROFILE 1
PROFILE 9
Seg. 1
Target
SP
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 each have an end of segment Target Setpoint.
If asegment is a Ramp-Time type, the slope needed to reach the target in the defined time
will change depending on the Starting Setpoint value. For a Ramp-Rate segment, the slope
is defined by the segments Ramp Rate, so the time to reach the target setpoint will change
instead. This is of particular significance for the first segment, since the starting value of the
process may not be known.
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.
An End segment ends the profile sequence.
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.