Each step of a firing program must have a programmed Rate of temperature
increase or decrease. This is the speed of the heat-up or cool-down. These rate
values are selected as Degrees per Hour. „Degrees per hour‟ rate can be
determined by dividing the total amount of temperature change by the number of
hours required to achieve the temperature change. For Example, If you want to
heat the kiln to 900°F from room temperature (72°F) in 2 hours time. The heating
rate would be 414 Degrees/hour. [900-72 = 828, 828/2 = 414]
During programming the display prompts for all Rate settings is
rA followed by the step number like rA 1, rA 2, rA 3, etc…
The values available for setting Rate are 0-1798°F/hour or 0-998°C/hour. If it‟s
desired to heat or cool as fast as possible, an alternative setting is available at
the beginning or end of the temperature range. This setting appears as FULL on
the controller display.
Entering Zero for a heating or cooling rate
The controller determines where your firing program ends by the rA value. If zero
is set for any Rate, this tells the controller that there are no more steps to your
firing schedule. If additional steps had previously been saved in the active
program, all steps after the zero entry will be erased. This feature can also be
used to erase an entire firing program by setting the first rA 1 value to zero.
Programming Heating or Cooling Temperatures
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.
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