Vescent SLICE-QT, Руководство пользователя

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Last update: 2022/07/20 23:32 slice:qt https://www.vescent.com/manuals/doku.php?id=slice:qt
https://www.vescent.com/manuals/ Printed on 2022/07/21 23:14
Slew Rate Limit
For applications where the rate of change of the temperature of the plant needs to be controlled, it is
possible to set an upper limit on the slew rate. This can also be done through the PID Params screen.
Setpoint °C
Sets the setpoint temperature of the
plant.
Proportional V/V
Sets the proportional gain of the loop
filter.
Integral sec
Sets the integral time constant of the
loop filter.
Derivative sec
Sets the derivative time constant of
the loop filter.
Slew (Rate) ºC/min
Sets the maximum slew rate for the
plant temperature.
Tab. 5: Setting loop parameters
If appropriate, make sure to turn the Slew Rate
Limit off when changing use case!
Maximum & Minimum Temperature, Lock Range
Set Maximum & Minimum Temperature
The maximum and minimum allowable temperatures (T
max
and T
min
) can be set as well as the range of
∆T where the system is considered to be locked. From a Channel Detail screen ( figure 21 ), tap
Settings > Temp Limits and the screen in figure 24 will appear. It is advised to set T
min
above the dew
point temperature for your ambient conditions to avoid condensation on your plant surface. If the
temperature of the plant exceeds the range set by T
max
and T
min
, the temperature will be displayed in a
flashing red field.
Set Lock Range
In the view shown, the lock range has been defined to be ±3 mK. If -3 mK ≤ ∆T ≤ +3 mK, ∆T will be
displayed on a green field. If outside this range, ∆T will be displayed on a yellow field. The graph in
the bottom right of the Channel Detail screen plots ∆T vs. time. The dashed yellow lines on this plot
represent the lock range limits as set in this screen.