Operator`s manual

7
PROGRAMMING:
The furnace increases productivity and reliability for the operator because cycles or programs can be
preprogrammed and operated automatically. Once programmed, the parameters are retained in memory even
with the loss of power. Parameters are not retained in memory if entered during the operation of a program.
Each program is made up of 3 stages which require 3 parameters each. The parameters are grouped into
ramp rates (R1, R2, R3), temperatures (T1, T2, T3), and dwell or hold times (H1, H2, H3). The 1,2,3 indicates
the stage number or sequence. The temperatures can be programmed in either °C or °F; the ramp rates in °C
per minute or °F per minute; and the hold times in hours and minutes (hh:mm).
RAMP RATES (R) (0 - 40°C/minute)
1. Pressing the Rate key makes the display show the current value of the R1 parameter followed by 3
blanks for a new value.
• For example: R1 8.0°C/M ->_ _ _
• The corresponding LED will also light to indicate the selected stage and parameter.
2. Use the digit keys (0,1,2,...,9) to enter the desired parameter value followed by the ENTER key.
The new parameter is now stored in memory.
• If a value is entered that is out of the acceptable range, the furnace will beep and display the acceptable
range.
• Programming a Rate to 0 will cause the furnace to terminate the remainder of the program stages. For
example, if R2 is set equal to 0 then at the end of the first hold time (H1) the furnace will go to the end of
the program, making the program single stage.
3. Pressing the Rate key additional times will display and give access to the Rate parameters for the
other two stages. The 4th time the key is pressed the display circulates back to the beginning and the R1
parameter will be displayed again.
• The Rate key operates the same if pressed during the operation of a program with the follow-
ing exception. The new Rate entered is used only for that one program or cycle and not stored in
memory.
• Negative ramp rates are also possible if slower than natural cooling.
TEMPERATURES (T) (50 - 1100°C or Tmax)
1. Pressing the Temp key makes the display show the current value of the T1 parameter followed by 4
blanks for a new value.
• For example: T1 160°C ->_ _ _ _
• The corresponding LED will also light to indicate the selected stage and parameter.
2. Use the digit keys (0,1,2,...,9) to enter the desired parameter value followed by the ENTER key.
The new parameter is now stored in memory.
• If a value is entered that is out of the acceptable range the furnace will beep and display the acceptable
range.
3. Pressing the Temp key additional times will display and give access to the Temp parameters for
the other two stages. The 4th time the key is pressed the display circulates back to the beginning and the
T1 parameter will be displayed again.
• The Temp key operates the same if pressed during the operation of a program with the
following exception. Any new parameter entered is used only for that one program or cycle and not
stored in memory.
HOLD TIMES (H) (0 - 99:59 mm:ss)
1. Pressing the Hold key makes the display show the current value of the H1 parameter followed by 4
blanks for a new value.
• For example: H1 1:00H ->_ _ : _ _ (1 hours and 00 minutes)
• The corresponding LED will also light to indicate the selected stage and parameter.
2. Use the digit keys (0,1,2,...,9) to enter the desired parameter value up to 99 minutes and 59 seconds
followed by the ENTER key. The new parameter is now stored in memory.
3. Pressing the Hold key additional times will display and give access to the Hold parameters for the
other two stages. The 4th time the key is pressed the display circulates back to the beginning and the H1