4838 Reactor Controller
12
Note:
The fi rst SP_O used must be a higher
temperature than the current temperature
(PV) or the program will not execute properly.
6. Press the return key once. The upper display will
read [
TI00
], where the “00” represents the
pattern number and the step number, respec-
tively. The lower display will show the time to
execute the current set point in “hh:mm” format.
The time setting can be changed by using the
arrow keys then press the set key to solidify the
change.
7. Repeat steps 4 and 5 for “SP01” through “SP07”
and “tI01” through “tI07” as required. Once you
have entered all the steps you want, you can
leave the remaining “SP” and “tI” variables at
zero and press the return key to advance.
8. Press the return key to display [
PSY0
] on the
upper display, where “0” represents the current
pattern number. This parameter determines the
last step to execute in the pattern. For example,
if PSy0 has a value of 3, Steps SP00 through
SP03 will execute. Use the arrow keys to change
the setting and press the set key to solidify the
change.
9. Press the return key to display [
CYC0
], where
“0” represents the pattern number. This pa-
rameter defi nes how many times you want the
indicated pattern to repeat. If you would like the
pattern to only execute once, set this value to
zero. Use the arrow keys to change the setting
and press the set key to solidify the change.
10. Press the return key to display [
LIN0
], where
“0” represents the pattern number. This pa-
rameter allows you to link the indicated pat-
tern another. If you would like more than seven
separate steps in the process, set this to the next
pattern number you wish to link to. Use the ar-
row keys to change the setting and press the set
key to solidify the change.
11. Press set to return to the main screen. Note
that the lower display of the main screen has
changed to show the program step.
Note:
The program will attempt to hold the
temperature at the set point determined by
the last step executed. So, if you wish for the
reactor cool to room temperature once the
program has fi nished, the last executed step
must have a set point consistent with room
temperature and the time for the last step
can be set to 00:00.
Engaging a Program
1. From the main screen, press the return key two
times to display [
PTRN
] on the upper display.
The lower display will indicate the pattern at
which you wish to execute.
2. Press the return key until the run/stop parameter
[
R-S
] is on the upper display. The lower display
will indicate the setting of the run/stop parame-
ter. Change this value to [
RUN
] in order to start
the program determined in step 1. Press set to
return to the main screen.
If you wish to stop the program completely, you
may change this value to [
STOP
]. Changing
the run/stop mode back to stop will restart the
program from the beginning.
If you wish to stop the program and continue
controlling the temperature at the current set
point, you may change this value to program
stop [
PSTP
]. Changing back to run mode from
a program stop will restart the program from the
beginning.
If you wish to hold the program at the current
temperature, you may change this to program
hold [
PHOD
]. Changing back to run mode from
a program hold will continue the program from
its current step.
3. The main screen will now show the current set
point on the lower display. Pressing the arrows
will allow you to change between: [
P-ST
] to
display the current pattern and step, [
R-TC
] to
display the remaining time in the current pat-
tern step, or [
SP
] to display the set point for the
current pattern step. Press set will solidify this
display change.
