23 Barnstead|Thermolyne • 800-553-0039
be running a multi-step program, set the furnace's setpoint to the value of PL1 (Program Level #1).) At
the end of the minute, the "SP" indicator will stop flashing, indicating that the setpoint can no longer be
changed. The A-T indicator will start flashing and continue to flash until the self tune has completed.
Once the self tune is completed, adaptive tune takes over and the A-T indicator will remain illuminated.
To stop tuning, function scroll until SAT is displayed and simultaneously push up and down buttons.
Operating the Controller
CAUTION
Do not exceed limitations for continuous or intermittent operating temperature shown in
the General Specifications. Exceeding these limits will result in severely reduced heating
element life.
Single Set Point Operation
This programmable control can be used as a single setpoint control or as a programmable control. To
use as a single set point control, simply push up or down buttons to choose a specific temperature.
Temperature setpoint or output power is indicated on lower display; single depression of scroll button will
alternate between these two parameters. The control will cause the furnace chamber to heat to the
chosen temperature and hold it at this temperature until you turn off the power switch or select another
temperature.
a. The setpoint temperature presently set in the control will be read out on the lower display.
b. To change this set point, depress the "UP" or "DOWN" push button until the desired setpoint value is
displayed then release the button.
c. At this point the furnace will begin to heat if the new set point temperature you have chosen is higher
than the present chamber temperature.
d. The upper display indicates the actual furnace temperature.
Programming Controller
The multi-programmable controller in these units provides up to 4 separate programs of 8 ramps and 8
dwells each. This controller also allows you to link programs together, which allows you to achieve 64
total segments (4 programs X 16 segments). These functions are controlled by the controller's first two
programming parameters, "Pnr" and "Cnt."
A maximum of 8 ramp and 8 dwell segment combinations are available per program, thus enabling eight
different setpoint levels to be achieved. Each ramp is programmed by specifying the program level (PL)
and the required ramp rate (PR). The programmer then automatically calculates the time that is required
to attain the program level (PL) based on desired ramp rate (PR). Dwell segments (soak) then can be
attached to each program level (PL) to hold that temperature for a specified time.
To run a program, first determine your ramp rate, dwell times, program levels. It is helpful to graph your
program out for ease of loading program into controller.
To select program number
Push scroll button until "Pnr 1" is displayed. Push the up or down button to select a program number from
1 to 4.
To Next Page
Loading...