Future Design MCTB 4.3, Руководство пользователя

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MCTB
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NOTE: A ramp rate entry is only available for single loop MCTB systems because the length of time for the
step to complete is based upon the change in set point and the rate at which the set point is to ramp.
Ramp units of time are still available for selection on single loop systems if time entry is preferred
over rate.
6.1.3.1 Ramp Rate/Soak Time Units Selection
The Time selection screen is accessed by selecting the “Time” menu item from the Edit pop-up menu.
For single loop systems, the ramp and soak time selections both provide the option of hours and minutes
(hh.mm) and minutes and seconds (mm.ss). In addition, the ramp time selections include units/minute (u/min)
and units/hour (u/hr). The selections apply to all steps of the program. The time units can be changed at any
time during program entry; however, the time entry of each step is not scaled to the new unit selection when
the change is made.
If a ramp step was
entered in the previous selection of “u/hr” for example, a ramp rate entry of 10 degrees per
hour will become
10 degrees per minute if the ramp selection is changes to “u/min”. When time units selections
are changed, all steps must be reviewed in order to make sure the actual ramp rate or time length for each step
is set to the desired length.