20
ter button (>) to select the current value. Push “UP” or
“DOWN” button and set Ramp time 1 in hours and minutes
in the format “X.XX”
(hour.minutes). This is the time
Ramp 1 will take to reach Set point 1. Push the Enter button
to
enter the set value as the current value.
Push “SEL” button until “TH1S” is displayed. Push the Enter
button (>) to select the current value.
Push “UP” or
“DOWN” button and set Dwell time 1 in hours and minutes
in the format “X.XX”
(hour.minutes). Push the Enter but-
ton to enter the set value as the current value.
Set “Sü-2” “TN2r” “TN2S” “Sü-3” “TN3r” “TN3S” “Sü-4”
“TN4r” and “TN4S” in the same manner as “Sü-1” “TN1r”
“TN1S”.
Program Execution
Push “SEL” button until “ProG” is displayed. Pushing “UP”
or “DOWN” button, select “run.” When “run” is selected, the
program will start from the actual furnace temperature at
that point in time.
Set point
While the program is in “run” or “Hold,” the set point shown
on the bottom display is the current working set point.
Program End
When the program ends, the controller will hold the furnace
at the value of Set point 4 until you stop the program
Program Stop
To stop program, push “SEL” button until “ProG” is dis-
played. Push “UP” or “DOWN” button until “oFF” is dis-
played. This will terminate program.
Self Tuning Feature
This programmable control has an automatic tuning feature
which installs optimum tuning parameters to give the best
temperature accuracy with your load and set point or pro-
gram. No manual loading of tuning parameters is needed.
Barnstead|Thermolyne highly recommends using this
feature to provide the best temperature accuracy the
controller can attain. Use this feature the first time you
use your furnace and each time you change your set point
NOTE
If you desire to skip a ramp or dwell segment,
follow this procedure:
for a dwell segment, enter a setting of “0” min-
utes.
for a ramp segment, enter a setting of “00.00”
hour.minutes. This will cause controller to skip to
next segment as fast as the furnace can heat or
cool down.
NOTE
The temperature control in these models is a
programmable “and” automatic single set point
device. When the program has ended, the con-
troller will maintain the chamber temperature at
a value equal to the last programmed level (Set
point 4) until the program is canceled. It will not
automatically cool to ambient unless Set point 4
is set at ambient. When a program is canceled,
the controller will maintain the chamber tem-
perature at a value equal to the single set point
mode set point.
O
PERATION
OF
4 R
AMP
& 4 D
WELL
P
ROGRAMMABLE
M
ODELS
