MC
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9.6. Control parameters – Xp, Tv, Tn
The control parameters preset in factory are in most cases
adequate for achieving an optimum temperature pattern for
the samples requiring temperature application.
Each parameter may be manually set via the keypad if
necessary, to allow optimum control performance.
Setting range:
0.1 ... 99.9
Proportional range >Xp<
The proportional range is the range below the selected
temperature value in which the control circuit reduces the
heating power from 100 % to 0 %.
Setting range::
1 ... 9999
Resetting time >Tn< (Integral component)
Compensation of the remaining control deviation due to
proportional regulation. An insufficient resetting time may
cause instabilities to occur. Excessive resetting time will
unnecessarily prolong compensation of the control difference.
Setting range:
0 ... 99
Lead time >Tv< (Differential component)
The differential component reduces the control settling time.
An insufficient lead time will prolong the time required to
compensate for disturbance effects and cause high
overshooting during run-up. An excessive lead time could
cause instabilities (oscillations) to occur.
1. Press the button until the desired menu item is
displayed.
2. Press enter to indicate the parameter.
3. Set value:
Use the cursor keys
to move left or right on the
display until the numeral you wish to change blinks.
Use the increase/decrease arrows
to change the
selected numeral (-, 0, 1, 2, 3, ... 9).
4. Press enter to store the selected value.
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