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Each step of a firing program must have a programmed heating or cooling temperature.
The controller must have at least one heating step to accept the firing program as valid
(an invalid program results in a
bAdP
display alarm). A heating step is simply any step
with a temperature setting that is above the current display temperature.
Cooling steps are automatically determined by the temperature value. If a heating or
cooling temperature value is programmed to a lower setting than the previous heating or
cooling temperature, it will be a cooling step.
During programming the display prompts for all Heating or Cooling Temperature
settings is
°F
(or
°C
) followed by the step number like
°F 1
,
°F 2, °F 3,
etc…
The temperature range available for setting heating or cooling temperatures is 32-
2400°F or 0-1316°C. If the controller does not allow you to program temperatures up to
2400°F/1316°C, it has been factory set by the supplier to a lower safety temperature.
This is often necessary to limit the controller to the maximum operating temperature of
the system.
Programming Hold Time
Each step of a firing program can have an optional Hold time. Hold time is the amount
of time you want to stay at the previously determined heating or cooling temperature.
Hold time is also referred to as Soak or Dwell time.
Hold Time is entered in Hours & Minutes format. The middle decimal point light on the
controller display is used to separate Hours from Minutes. For Example, a 1 hour hold
time should be set like [01.00], while a 1 hour and 30 minute hold time would be [01.30].
If no hold time is desired, the setting should be [00.00]
A special Hold time is available for indefinite Hold periods. If it is desired to hold the
program temperature until someone manual stops the firing or manually advances the
program, a hold time of [99.59] represents indefinite Hold.
The value range available for setting Hold time is 00.00 to 99.58.
During a firing, the hold time begins as soon as the temperature reaches the heating or
cooling temperature. As the hold time progresses, the controller display will count-down
the remaining time until the hold time has expired.
During programming the display prompts for all Hold settings is
HLd
followed by the
step number like
HLd1
,
HLd2, HLd3,
etc…
Other Programming Notes
After a firing program is set in the controller, the values will not change or be lost when
the controller is turned off.
It is not possible to back-up in the programming mode. If a mistake is made while
programming a previous step, you must start over from the
IdLE
mode to make
corrections.
