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Note
The controller will return to the HOME
display if left idle for more than a few
seconds.
Note
Once the desired parameter has been
selected, depressing either the UP or
DOWN button will cause the parameter
to be replaced with the new value. Any
further use of the UP or DOWN buttons
will change the parameter value. In all
cases, the value shown on the display
is the current working value of that
parameter.
Basic Operation
When the controller is turned "ON," it will perform a short
self-test and then change to the HOME DISPLAY. The
HOME DISPLAY shows the measured temperature
(process value) in the upper display and the desired value
(setpoint) in the lower display.
To Operate the Controller as a
Single Setpoint Controller
1.
Switch the circuit breaker to the "ON" position.
The setpoint temperature presently set in the con-
troller will appear in the lower display. (The upper
display indicates the actual chamber tempera-
ture.)
2.
To change the setpoint, press the UP or DOWN
button until the desired setpoint value is dis-
played; then release the button.
3.
The furnace will begin to heat if the new setpoint
temperature is higher than the present chamber
temperature.
Programming the Controller
The controller is capable of varying temperature or process
value with time through programming. A program is stored
as a series of ramp and dwell segments and can be run
once, repeated a set number of times or run continuously.
To create a customized program using the controller
parameters listed under "Controller Parameters" beginning
of this section, follow the procedures outlined in the pro-
ceeding sections of this manual.
Creating a New Program or Editing an
Existing Program (Multi-program Models
Only)
The same steps are used when creating a new program
and editing an existing program with the exception being
that a new program starts with all its segments set to End
in the tYPE parameter. Temporary changes can be made
O
PERATION
21
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