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6.3.3 Running a Program
To run a program such-as the one outlined above, press and hold
the 'DOWNIRUN' button making the 'RUN' indicator
illuminate. At the end of this program the 'HLD' (hold) indicator
is illuminated to indicate this program is in the indefinite dwell at
the last target temperature. This hold indicator is caused by the
"JC" selection of "I", while the "JC" selections of
not illuminate the 'HLD' (hold) indicator.
6.3.4 Ending a Program
To end a program while in the 'RUN' or 'HLD" (hold) mode,
press and hold the 'UPIRESET' button to turn off the current
program and extinguish the 'RUN' or 'HLD' indicator.
Turning off the unit's power will also stop the program. When
power is restored, the controller is in the Reset or standby mode
with no power to the heaters.
Note: The programmer/controller will not operate the unit's
heaters (to change or maintain a temperature) unless
there is a program running or a single setpoint value is
selected in the Local Mode.
6.3.5 Changing a Program
To make changes ONLY to the target temperature and segment
length times for simple program operation, follow these steps:
1. Make sure the indicators beside "RUN" and
controller face are off. If either indicator is on, press and hold
the 'SETENT' button until the display shows 'modE'. Select
release the 'SETENT' button once.
2. Press the 'SETIENT' button for 3 seconds to display "modE
in the upper display and "rES" in the lower display. Press and
release 'SETENT' repeatedly to display "LoC". Make sure
the value below "LoC" is
'DOWN' arrow to select
"SETENT" button to register the change to
3. Press and release the 'SETJENT' button once to show "PrG"
on the upper display.
4. Press the 'UP' arrow to make the lower value "1".
5. Press and release 'SETIENT' button twice to display "SP1".
Using the arrow buttons to revise the target setpoint.
6. Press and release 'SETENT' button twice to display "tml".
Using the arrow buttons to revise the segment time length
needed to get to the target setpoint 'SP1'.
7. Press and release 'SETENT' button to display other
setpoints and segment time lengths. Use the arrow buttons to
change the temperature setpoints and time lengths. Press and
release the 'SETIENT' button to register any new values.
8. Press and HOLD the 'SETENT' button for 3 seconds to exit
the program menu and return to the reset or standby display.
or "2" will
on the
"L,"
(zero). If it is not
use
and press and release
Auto Tuning the UP150 Controller
6.4
Auto tuning maximizes the performance of the chamber at a
selected temperature with the product load's characteristics, by
operating with the quickest response and minimal temperature
overshoot.
Factory settings are for general purposes, but your process can be
enhanced through the auto tune feature. To obtain this maximum
performance, follow these steps to auto tune the controller.
1. Load the chamber with materials that have the same mass
and thermal characteristics as an actual product load.
2. Operate the chamber to the process temperature.
3. Start the Auto Tune: Press and hold the 'SETtENT' button
for three seconds to display the "modE" parameter of the
Operating Parameter menu.
4. Press and release the 'SETENT' button five times to
advance to the "At" parameter.
5.
Press and release the 'UP' arrow button to show "on" in the
lower display.
6. Press the 'SETtENT' button once to enter the auto tune mode
and exit the Operating Parameters menu.
7. The controller will cycle three times through a heating and
cooling pattern, measuring the characteristics of the load and
chamber temperature controls. During the auto tuning, 'At'
will alternately flash with the measured temperature (PV)
display to indicate that the auto tuning is in progress. The
length of time for the auto tune varies with the load, chamber
size and temperature selected.
8. The auto tune is completed when the regular display of the
measured temperature is shown without the "At" value
flashing. The chamber should now operate to the process
temperature with the given product load, with the quickest
response and minimal temperature overshoot.
9. If the process temperature or load changes significantly,
another auto tune session may be necessary to optimize the
chamber performance.
To interrupt the auto tune before it is completed, simply turn off
the power to the controller and unit. When the power is restored
the auto tune will not be operating.
Installation and Operation
Laboratory Vacuum Ovens
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